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Diffstat (limited to 'src/interfaces/jdbc/postgresql/DatabaseMetaData.java')
| -rw-r--r-- | src/interfaces/jdbc/postgresql/DatabaseMetaData.java | 2520 |
1 files changed, 0 insertions, 2520 deletions
diff --git a/src/interfaces/jdbc/postgresql/DatabaseMetaData.java b/src/interfaces/jdbc/postgresql/DatabaseMetaData.java deleted file mode 100644 index da1cb52962..0000000000 --- a/src/interfaces/jdbc/postgresql/DatabaseMetaData.java +++ /dev/null @@ -1,2520 +0,0 @@ -package postgresql; - -import java.sql.*; -import java.util.*; - -/** - * This class provides information about the database as a whole. - * - * <p>Many of the methods here return lists of information in ResultSets. You - * can use the normal ResultSet methods such as getString and getInt to - * retrieve the data from these ResultSets. If a given form of metadata is - * not available, these methods should throw a SQLException. - * - * <p>Some of these methods take arguments that are String patterns. These - * arguments all have names such as fooPattern. Within a pattern String, - * "%" means match any substring of 0 or more characters, and "_" means - * match any one character. Only metadata entries matching the search - * pattern are returned. if a search pattern argument is set to a null - * ref, it means that argument's criteria should be dropped from the - * search. - * - * <p>A SQLException will be throws if a driver does not support a meta - * data method. In the case of methods that return a ResultSet, either - * a ResultSet (which may be empty) is returned or a SQLException is - * thrown. - * - * @see java.sql.DatabaseMetaData - */ -public class DatabaseMetaData implements java.sql.DatabaseMetaData -{ - Connection connection; // The connection association - - // These define various OID's. Hopefully they will stay constant. - static final int iVarcharOid = 1043; // OID for varchar - static final int iBoolOid = 16; // OID for bool - static final int iInt2Oid = 21; // OID for int2 - static final int iInt4Oid = 23; // OID for int4 - static final int VARHDRSZ = 4; // length for int4 - - // This is a default value for remarks - private static final byte defaultRemarks[]="no remarks".getBytes(); - - public DatabaseMetaData(Connection conn) - { - this.connection = conn; - } - - /** - * Can all the procedures returned by getProcedures be called - * by the current user? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean allProceduresAreCallable() throws SQLException - { - return true; // For now... - } - - /** - * Can all the tables returned by getTable be SELECTed by - * the current user? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean allTablesAreSelectable() throws SQLException - { - return true; // For now... - } - - /** - * What is the URL for this database? - * - * @return the url or null if it cannott be generated - * @exception SQLException if a database access error occurs - */ - public String getURL() throws SQLException - { - return connection.getURL(); - } - - /** - * What is our user name as known to the database? - * - * @return our database user name - * @exception SQLException if a database access error occurs - */ - public String getUserName() throws SQLException - { - return connection.getUserName(); - } - - /** - * Is the database in read-only mode? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean isReadOnly() throws SQLException - { - return connection.isReadOnly(); - } - - /** - * Are NULL values sorted high? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean nullsAreSortedHigh() throws SQLException - { - return false; - } - - /** - * Are NULL values sorted low? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean nullsAreSortedLow() throws SQLException - { - return false; - } - - /** - * Are NULL values sorted at the start regardless of sort order? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean nullsAreSortedAtStart() throws SQLException - { - return false; - } - - /** - * Are NULL values sorted at the end regardless of sort order? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean nullsAreSortedAtEnd() throws SQLException - { - return true; - } - - /** - * What is the name of this database product - we hope that it is - * PostgreSQL, so we return that explicitly. - * - * @return the database product name - * @exception SQLException if a database access error occurs - */ - public String getDatabaseProductName() throws SQLException - { - return new String("PostgreSQL"); - } - - /** - * What is the version of this database product. - * - * <p>Note that PostgreSQL 6.3 has a system catalog called pg_version - - * however, select * from pg_version on any database retrieves - * no rows. - * - * <p>For now, we will return the version 6.3 (in the hope that we change - * this driver as often as we change the database) - * - * @return the database version - * @exception SQLException if a database access error occurs - */ - public String getDatabaseProductVersion() throws SQLException - { - return ("6.4"); - } - - /** - * What is the name of this JDBC driver? If we don't know this - * we are doing something wrong! - * - * @return the JDBC driver name - * @exception SQLException why? - */ - public String getDriverName() throws SQLException - { - return new String("PostgreSQL Native Driver"); - } - - /** - * What is the version string of this JDBC driver? Again, this is - * static. - * - * @return the JDBC driver name. - * @exception SQLException why? - */ - public String getDriverVersion() throws SQLException - { - return new String(Integer.toString(connection.this_driver.getMajorVersion())+"."+Integer.toString(connection.this_driver.getMinorVersion())); - } - - /** - * What is this JDBC driver's major version number? - * - * @return the JDBC driver major version - */ - public int getDriverMajorVersion() - { - return connection.this_driver.getMajorVersion(); - } - - /** - * What is this JDBC driver's minor version number? - * - * @return the JDBC driver minor version - */ - public int getDriverMinorVersion() - { - return connection.this_driver.getMinorVersion(); - } - - /** - * Does the database store tables in a local file? No - it - * stores them in a file on the server. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean usesLocalFiles() throws SQLException - { - return false; - } - - /** - * Does the database use a file for each table? Well, not really, - * since it doesnt use local files. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean usesLocalFilePerTable() throws SQLException - { - return false; - } - - /** - * Does the database treat mixed case unquoted SQL identifiers - * as case sensitive and as a result store them in mixed case? - * A JDBC-Compliant driver will always return false. - * - * <p>Predicament - what do they mean by "SQL identifiers" - if it - * means the names of the tables and columns, then the answers - * given below are correct - otherwise I don't know. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsMixedCaseIdentifiers() throws SQLException - { - return false; - } - - /** - * Does the database treat mixed case unquoted SQL identifiers as - * case insensitive and store them in upper case? - * - * @return true if so - */ - public boolean storesUpperCaseIdentifiers() throws SQLException - { - return false; - } - - /** - * Does the database treat mixed case unquoted SQL identifiers as - * case insensitive and store them in lower case? - * - * @return true if so - */ - public boolean storesLowerCaseIdentifiers() throws SQLException - { - return true; - } - - /** - * Does the database treat mixed case unquoted SQL identifiers as - * case insensitive and store them in mixed case? - * - * @return true if so - */ - public boolean storesMixedCaseIdentifiers() throws SQLException - { - return false; - } - - /** - * Does the database treat mixed case quoted SQL identifiers as - * case sensitive and as a result store them in mixed case? A - * JDBC compliant driver will always return true. - * - * <p>Predicament - what do they mean by "SQL identifiers" - if it - * means the names of the tables and columns, then the answers - * given below are correct - otherwise I don't know. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException - { - return true; - } - - /** - * Does the database treat mixed case quoted SQL identifiers as - * case insensitive and store them in upper case? - * - * @return true if so - */ - public boolean storesUpperCaseQuotedIdentifiers() throws SQLException - { - return false; - } - - /** - * Does the database treat mixed case quoted SQL identifiers as case - * insensitive and store them in lower case? - * - * @return true if so - */ - public boolean storesLowerCaseQuotedIdentifiers() throws SQLException - { - return false; - } - - /** - * Does the database treat mixed case quoted SQL identifiers as case - * insensitive and store them in mixed case? - * - * @return true if so - */ - public boolean storesMixedCaseQuotedIdentifiers() throws SQLException - { - return false; - } - - /** - * What is the string used to quote SQL identifiers? This returns - * a space if identifier quoting isn't supported. A JDBC Compliant - * driver will always use a double quote character. - * - * <p>If an SQL identifier is a table name, column name, etc. then - * we do not support it. - * - * @return the quoting string - * @exception SQLException if a database access error occurs - */ - public String getIdentifierQuoteString() throws SQLException - { - return null; - } - - /** - * Get a comma separated list of all a database's SQL keywords that - * are NOT also SQL92 keywords. - * - * <p>Within PostgreSQL, the keywords are found in - * src/backend/parser/keywords.c - * - * <p>For SQL Keywords, I took the list provided at - * <a href="http://web.dementia.org/~shadow/sql/sql3bnf.sep93.txt"> - * http://web.dementia.org/~shadow/sql/sql3bnf.sep93.txt</a> - * which is for SQL3, not SQL-92, but it is close enough for - * this purpose. - * - * @return a comma separated list of keywords we use - * @exception SQLException if a database access error occurs - */ - public String getSQLKeywords() throws SQLException - { - return new String("abort,acl,add,aggregate,append,archive,arch_store,backward,binary,change,cluster,copy,database,delimiters,do,extend,explain,forward,heavy,index,inherits,isnull,light,listen,load,merge,nothing,notify,notnull,oids,purge,rename,replace,retrieve,returns,rule,recipe,setof,stdin,stdout,store,vacuum,verbose,version"); - } - - public String getNumericFunctions() throws SQLException - { - // XXX-Not Implemented - return ""; - } - - public String getStringFunctions() throws SQLException - { - // XXX-Not Implemented - return ""; - } - - public String getSystemFunctions() throws SQLException - { - // XXX-Not Implemented - return ""; - } - - public String getTimeDateFunctions() throws SQLException - { - // XXX-Not Implemented - return ""; - } - - /** - * This is the string that can be used to escape '_' and '%' in - * a search string pattern style catalog search parameters - * - * @return the string used to escape wildcard characters - * @exception SQLException if a database access error occurs - */ - public String getSearchStringEscape() throws SQLException - { - return new String("\\"); - } - - /** - * Get all the "extra" characters that can bew used in unquoted - * identifier names (those beyond a-zA-Z0-9 and _) - * - * <p>From the file src/backend/parser/scan.l, an identifier is - * {letter}{letter_or_digit} which makes it just those listed - * above. - * - * @return a string containing the extra characters - * @exception SQLException if a database access error occurs - */ - public String getExtraNameCharacters() throws SQLException - { - return new String(""); - } - - /** - * Is "ALTER TABLE" with an add column supported? - * Yes for PostgreSQL 6.1 - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsAlterTableWithAddColumn() throws SQLException - { - return true; - } - - /** - * Is "ALTER TABLE" with a drop column supported? - * Yes for PostgreSQL 6.1 - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsAlterTableWithDropColumn() throws SQLException - { - return true; - } - - /** - * Is column aliasing supported? - * - * <p>If so, the SQL AS clause can be used to provide names for - * computed columns or to provide alias names for columns as - * required. A JDBC Compliant driver always returns true. - * - * <p>e.g. - * - * <br><pre> - * select count(C) as C_COUNT from T group by C; - * - * </pre><br> - * should return a column named as C_COUNT instead of count(C) - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsColumnAliasing() throws SQLException - { - return true; - } - - /** - * Are concatenations between NULL and non-NULL values NULL? A - * JDBC Compliant driver always returns true - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean nullPlusNonNullIsNull() throws SQLException - { - return true; - } - - public boolean supportsConvert() throws SQLException - { - // XXX-Not Implemented - return false; - } - - public boolean supportsConvert(int fromType, int toType) throws SQLException - { - // XXX-Not Implemented - return false; - } - - public boolean supportsTableCorrelationNames() throws SQLException - { - // XXX-Not Implemented - return false; - } - - public boolean supportsDifferentTableCorrelationNames() throws SQLException - { - // XXX-Not Implemented - return false; - } - - /** - * Are expressions in "ORCER BY" lists supported? - * - * <br>e.g. select * from t order by a + b; - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsExpressionsInOrderBy() throws SQLException - { - return true; - } - - /** - * Can an "ORDER BY" clause use columns not in the SELECT? - * I checked it, and you can't. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsOrderByUnrelated() throws SQLException - { - return false; - } - - /** - * Is some form of "GROUP BY" clause supported? - * I checked it, and yes it is. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsGroupBy() throws SQLException - { - return true; - } - - /** - * Can a "GROUP BY" clause use columns not in the SELECT? - * I checked it - it seems to allow it - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsGroupByUnrelated() throws SQLException - { - return true; - } - - /** - * Can a "GROUP BY" clause add columns not in the SELECT provided - * it specifies all the columns in the SELECT? Does anyone actually - * understand what they mean here? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsGroupByBeyondSelect() throws SQLException - { - return true; // For now... - } - - /** - * Is the escape character in "LIKE" clauses supported? A - * JDBC compliant driver always returns true. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsLikeEscapeClause() throws SQLException - { - return true; - } - - /** - * Are multiple ResultSets from a single execute supported? - * Well, I implemented it, but I dont think this is possible from - * the back ends point of view. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsMultipleResultSets() throws SQLException - { - return false; - } - - /** - * Can we have multiple transactions open at once (on different - * connections?) - * I guess we can have, since Im relying on it. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsMultipleTransactions() throws SQLException - { - return true; - } - - /** - * Can columns be defined as non-nullable. A JDBC Compliant driver - * always returns true. - * - * <p>This changed from false to true in v6.2 of the driver, as this - * support was added to the backend. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsNonNullableColumns() throws SQLException - { - return true; - } - - /** - * Does this driver support the minimum ODBC SQL grammar. This - * grammar is defined at: - * - * <p><a href="http://www.microsoft.com/msdn/sdk/platforms/doc/odbc/src/intropr.htm">http://www.microsoft.com/msdn/sdk/platforms/doc/odbc/src/intropr.htm</a> - * - * <p>In Appendix C. From this description, we seem to support the - * ODBC minimal (Level 0) grammar. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsMinimumSQLGrammar() throws SQLException - { - return true; - } - - /** - * Does this driver support the Core ODBC SQL grammar. We need - * SQL-92 conformance for this. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsCoreSQLGrammar() throws SQLException - { - return false; - } - - /** - * Does this driver support the Extended (Level 2) ODBC SQL - * grammar. We don't conform to the Core (Level 1), so we can't - * conform to the Extended SQL Grammar. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsExtendedSQLGrammar() throws SQLException - { - return false; - } - - /** - * Does this driver support the ANSI-92 entry level SQL grammar? - * All JDBC Compliant drivers must return true. I think we have - * to support outer joins for this to be true. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsANSI92EntryLevelSQL() throws SQLException - { - return false; - } - - /** - * Does this driver support the ANSI-92 intermediate level SQL - * grammar? Anyone who does not support Entry level cannot support - * Intermediate level. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsANSI92IntermediateSQL() throws SQLException - { - return false; - } - - /** - * Does this driver support the ANSI-92 full SQL grammar? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsANSI92FullSQL() throws SQLException - { - return false; - } - - /** - * Is the SQL Integrity Enhancement Facility supported? - * I haven't seen this mentioned anywhere, so I guess not - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsIntegrityEnhancementFacility() throws SQLException - { - return false; - } - - /** - * Is some form of outer join supported? From my knowledge, nope. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsOuterJoins() throws SQLException - { - return false; - } - - /** - * Are full nexted outer joins supported? Well, we dont support any - * form of outer join, so this is no as well - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsFullOuterJoins() throws SQLException - { - return false; - } - - /** - * Is there limited support for outer joins? (This will be true if - * supportFullOuterJoins is true) - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsLimitedOuterJoins() throws SQLException - { - return false; - } - - /** - * What is the database vendor's preferred term for "schema" - well, - * we do not provide support for schemas, so lets just use that - * term. - * - * @return the vendor term - * @exception SQLException if a database access error occurs - */ - public String getSchemaTerm() throws SQLException - { - return new String("Schema"); - } - - /** - * What is the database vendor's preferred term for "procedure" - - * I kind of like "Procedure" myself. - * - * @return the vendor term - * @exception SQLException if a database access error occurs - */ - public String getProcedureTerm() throws SQLException - { - return new String("Procedure"); - } - - /** - * What is the database vendor's preferred term for "catalog"? - - * we dont have a preferred term, so just use Catalog - * - * @return the vendor term - * @exception SQLException if a database access error occurs - */ - public String getCatalogTerm() throws SQLException - { - return new String("Catalog"); - } - - /** - * Does a catalog appear at the start of a qualified table name? - * (Otherwise it appears at the end). - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean isCatalogAtStart() throws SQLException - { - return false; - } - - /** - * What is the Catalog separator. Hmmm....well, I kind of like - * a period (so we get catalog.table definitions). - I don't think - * PostgreSQL supports catalogs anyhow, so it makes no difference. - * - * @return the catalog separator string - * @exception SQLException if a database access error occurs - */ - public String getCatalogSeparator() throws SQLException - { - // PM Sep 29 97 - changed from "." as we don't support catalogs. - return new String(""); - } - - /** - * Can a schema name be used in a data manipulation statement? Nope. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsSchemasInDataManipulation() throws SQLException - { - return false; - } - - /** - * Can a schema name be used in a procedure call statement? Nope. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsSchemasInProcedureCalls() throws SQLException - { - return false; - } - - /** - * Can a schema be used in a table definition statement? Nope. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsSchemasInTableDefinitions() throws SQLException - { - return false; - } - - /** - * Can a schema name be used in an index definition statement? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsSchemasInIndexDefinitions() throws SQLException - { - return false; - } - - /** - * Can a schema name be used in a privilege definition statement? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException - { - return false; - } - - /** - * Can a catalog name be used in a data manipulation statement? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsCatalogsInDataManipulation() throws SQLException - { - return false; - } - - /** - * Can a catalog name be used in a procedure call statement? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsCatalogsInProcedureCalls() throws SQLException - { - return false; - } - - /** - * Can a catalog name be used in a table definition statement? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsCatalogsInTableDefinitions() throws SQLException - { - return false; - } - - /** - * Can a catalog name be used in an index definition? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsCatalogsInIndexDefinitions() throws SQLException - { - return false; - } - - /** - * Can a catalog name be used in a privilege definition statement? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException - { - return false; - } - - /** - * We support cursors for gets only it seems. I dont see a method - * to get a positioned delete. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsPositionedDelete() throws SQLException - { - return false; // For now... - } - - /** - * Is positioned UPDATE supported? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsPositionedUpdate() throws SQLException - { - return false; // For now... - } - - public boolean supportsSelectForUpdate() throws SQLException - { - // XXX-Not Implemented - return false; - } - - public boolean supportsStoredProcedures() throws SQLException - { - // XXX-Not Implemented - return false; - } - - public boolean supportsSubqueriesInComparisons() throws SQLException - { - // XXX-Not Implemented - return false; - } - - public boolean supportsSubqueriesInExists() throws SQLException - { - // XXX-Not Implemented - return false; - } - - public boolean supportsSubqueriesInIns() throws SQLException - { - // XXX-Not Implemented - return false; - } - - public boolean supportsSubqueriesInQuantifieds() throws SQLException - { - // XXX-Not Implemented - return false; - } - - public boolean supportsCorrelatedSubqueries() throws SQLException - { - // XXX-Not Implemented - return false; - } - - /** - * Is SQL UNION supported? Nope. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsUnion() throws SQLException - { - return false; - } - - /** - * Is SQL UNION ALL supported? Nope. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsUnionAll() throws SQLException - { - return false; - } - - /** - * In PostgreSQL, Cursors are only open within transactions. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsOpenCursorsAcrossCommit() throws SQLException - { - return false; - } - - /** - * Do we support open cursors across multiple transactions? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsOpenCursorsAcrossRollback() throws SQLException - { - return false; - } - - /** - * Can statements remain open across commits? They may, but - * this driver cannot guarentee that. In further reflection. - * we are talking a Statement object jere, so the answer is - * yes, since the Statement is only a vehicle to ExecSQL() - * - * @return true if they always remain open; false otherwise - * @exception SQLException if a database access error occurs - */ - public boolean supportsOpenStatementsAcrossCommit() throws SQLException - { - return true; - } - - /** - * Can statements remain open across rollbacks? They may, but - * this driver cannot guarentee that. In further contemplation, - * we are talking a Statement object here, so the answer is yes, - * since the Statement is only a vehicle to ExecSQL() in Connection - * - * @return true if they always remain open; false otherwise - * @exception SQLException if a database access error occurs - */ - public boolean supportsOpenStatementsAcrossRollback() throws SQLException - { - return true; - } - - /** - * How many hex characters can you have in an inline binary literal - * - * @return the max literal length - * @exception SQLException if a database access error occurs - */ - public int getMaxBinaryLiteralLength() throws SQLException - { - return 0; // For now... - } - - /** - * What is the maximum length for a character literal - * I suppose it is 8190 (8192 - 2 for the quotes) - * - * @return the max literal length - * @exception SQLException if a database access error occurs - */ - public int getMaxCharLiteralLength() throws SQLException - { - return 8190; - } - - /** - * Whats the limit on column name length. The description of - * pg_class would say '32' (length of pg_class.relname) - we - * should probably do a query for this....but.... - * - * @return the maximum column name length - * @exception SQLException if a database access error occurs - */ - public int getMaxColumnNameLength() throws SQLException - { - return 32; - } - - /** - * What is the maximum number of columns in a "GROUP BY" clause? - * - * @return the max number of columns - * @exception SQLException if a database access error occurs - */ - public int getMaxColumnsInGroupBy() throws SQLException - { - return getMaxColumnsInTable(); - } - - /** - * What's the maximum number of columns allowed in an index? - * 6.0 only allowed one column, but 6.1 introduced multi-column - * indices, so, theoretically, its all of them. - * - * @return max number of columns - * @exception SQLException if a database access error occurs - */ - public int getMaxColumnsInIndex() throws SQLException - { - return getMaxColumnsInTable(); - } - - /** - * What's the maximum number of columns in an "ORDER BY clause? - * Theoretically, all of them! - * - * @return the max columns - * @exception SQLException if a database access error occurs - */ - public int getMaxColumnsInOrderBy() throws SQLException - { - return getMaxColumnsInTable(); - } - - /** - * What is the maximum number of columns in a "SELECT" list? - * Theoretically, all of them! - * - * @return the max columns - * @exception SQLException if a database access error occurs - */ - public int getMaxColumnsInSelect() throws SQLException - { - return getMaxColumnsInTable(); - } - - /** - * What is the maximum number of columns in a table? From the - * create_table(l) manual page... - * - * <p>"The new class is created as a heap with no initial data. A - * class can have no more than 1600 attributes (realistically, - * this is limited by the fact that tuple sizes must be less than - * 8192 bytes)..." - * - * @return the max columns - * @exception SQLException if a database access error occurs - */ - public int getMaxColumnsInTable() throws SQLException - { - return 1600; - } - - /** - * How many active connection can we have at a time to this - * database? Well, since it depends on postmaster, which just - * does a listen() followed by an accept() and fork(), its - * basically very high. Unless the system runs out of processes, - * it can be 65535 (the number of aux. ports on a TCP/IP system). - * I will return 8192 since that is what even the largest system - * can realistically handle, - * - * @return the maximum number of connections - * @exception SQLException if a database access error occurs - */ - public int getMaxConnections() throws SQLException - { - return 8192; - } - - /** - * What is the maximum cursor name length (the same as all - * the other F***** identifiers!) - * - * @return max cursor name length in bytes - * @exception SQLException if a database access error occurs - */ - public int getMaxCursorNameLength() throws SQLException - { - return 32; - } - - /** - * What is the maximum length of an index (in bytes)? Now, does - * the spec. mean name of an index (in which case its 32, the - * same as a table) or does it mean length of an index element - * (in which case its 8192, the size of a row) or does it mean - * the number of rows it can access (in which case it 2^32 - - * a 4 byte OID number)? I think its the length of an index - * element, personally, so Im setting it to 8192. - * - * @return max index length in bytes - * @exception SQLException if a database access error occurs - */ - public int getMaxIndexLength() throws SQLException - { - return 8192; - } - - public int getMaxSchemaNameLength() throws SQLException - { - // XXX-Not Implemented - return 0; - } - - /** - * What is the maximum length of a procedure name? - * (length of pg_proc.proname used) - again, I really - * should do a query here to get it. - * - * @return the max name length in bytes - * @exception SQLException if a database access error occurs - */ - public int getMaxProcedureNameLength() throws SQLException - { - return 32; - } - - public int getMaxCatalogNameLength() throws SQLException - { - // XXX-Not Implemented - return 0; - } - - /** - * What is the maximum length of a single row? (not including - * blobs). 8192 is defined in PostgreSQL. - * - * @return max row size in bytes - * @exception SQLException if a database access error occurs - */ - public int getMaxRowSize() throws SQLException - { - return 8192; - } - - /** - * Did getMaxRowSize() include LONGVARCHAR and LONGVARBINARY - * blobs? We don't handle blobs yet - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean doesMaxRowSizeIncludeBlobs() throws SQLException - { - return false; - } - - /** - * What is the maximum length of a SQL statement? - * - * @return max length in bytes - * @exception SQLException if a database access error occurs - */ - public int getMaxStatementLength() throws SQLException - { - return 8192; - } - - /** - * How many active statements can we have open at one time to - * this database? Basically, since each Statement downloads - * the results as the query is executed, we can have many. However, - * we can only really have one statement per connection going - * at once (since they are executed serially) - so we return - * one. - * - * @return the maximum - * @exception SQLException if a database access error occurs - */ - public int getMaxStatements() throws SQLException - { - return 1; - } - - /** - * What is the maximum length of a table name? This was found - * from pg_class.relname length - * - * @return max name length in bytes - * @exception SQLException if a database access error occurs - */ - public int getMaxTableNameLength() throws SQLException - { - return 32; - } - - /** - * What is the maximum number of tables that can be specified - * in a SELECT? Theoretically, this is the same number as the - * number of tables allowable. In practice tho, it is much smaller - * since the number of tables is limited by the statement, we - * return 1024 here - this is just a number I came up with (being - * the number of tables roughly of three characters each that you - * can fit inside a 8192 character buffer with comma separators). - * - * @return the maximum - * @exception SQLException if a database access error occurs - */ - public int getMaxTablesInSelect() throws SQLException - { - return 1024; - } - - /** - * What is the maximum length of a user name? Well, we generally - * use UNIX like user names in PostgreSQL, so I think this would - * be 8. However, showing the schema for pg_user shows a length - * for username of 32. - * - * @return the max name length in bytes - * @exception SQLException if a database access error occurs - */ - public int getMaxUserNameLength() throws SQLException - { - return 32; - } - - - /** - * What is the database's default transaction isolation level? We - * do not support this, so all transactions are SERIALIZABLE. - * - * @return the default isolation level - * @exception SQLException if a database access error occurs - * @see Connection - */ - public int getDefaultTransactionIsolation() throws SQLException - { - return Connection.TRANSACTION_SERIALIZABLE; - } - - /** - * Are transactions supported? If not, commit and rollback are noops - * and the isolation level is TRANSACTION_NONE. We do support - * transactions. - * - * @return true if transactions are supported - * @exception SQLException if a database access error occurs - */ - public boolean supportsTransactions() throws SQLException - { - return true; - } - - /** - * Does the database support the given transaction isolation level? - * We only support TRANSACTION_SERIALIZABLE - * - * @param level the values are defined in java.sql.Connection - * @return true if so - * @exception SQLException if a database access error occurs - * @see Connection - */ - public boolean supportsTransactionIsolationLevel(int level) throws SQLException - { - if (level == Connection.TRANSACTION_SERIALIZABLE) - return true; - else - return false; - } - - /** - * Are both data definition and data manipulation transactions - * supported? I checked it, and could not do a CREATE TABLE - * within a transaction, so I am assuming that we don't - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException - { - return false; - } - - /** - * Are only data manipulation statements withing a transaction - * supported? - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean supportsDataManipulationTransactionsOnly() throws SQLException - { - return true; - } - - /** - * Does a data definition statement within a transaction force - * the transaction to commit? I think this means something like: - * - * <p><pre> - * CREATE TABLE T (A INT); - * INSERT INTO T (A) VALUES (2); - * BEGIN; - * UPDATE T SET A = A + 1; - * CREATE TABLE X (A INT); - * SELECT A FROM T INTO X; - * COMMIT; - * </pre><p> - * - * does the CREATE TABLE call cause a commit? The answer is no. - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean dataDefinitionCausesTransactionCommit() throws SQLException - { - return false; - } - - /** - * Is a data definition statement within a transaction ignored? - * It seems to be (from experiment in previous method) - * - * @return true if so - * @exception SQLException if a database access error occurs - */ - public boolean dataDefinitionIgnoredInTransactions() throws SQLException - { - return true; - } - - /** - * Get a description of stored procedures available in a catalog - * - * <p>Only procedure descriptions matching the schema and procedure - * name criteria are returned. They are ordered by PROCEDURE_SCHEM - * and PROCEDURE_NAME - * - * <p>Each procedure description has the following columns: - * <ol> - * <li><b>PROCEDURE_CAT</b> String => procedure catalog (may be null) - * <li><b>PROCEDURE_SCHEM</b> String => procedure schema (may be null) - * <li><b>PROCEDURE_NAME</b> String => procedure name - * <li><b>Field 4</b> reserved (make it null) - * <li><b>Field 5</b> reserved (make it null) - * <li><b>Field 6</b> reserved (make it null) - * <li><b>REMARKS</b> String => explanatory comment on the procedure - * <li><b>PROCEDURE_TYPE</b> short => kind of procedure - * <ul> - * <li> procedureResultUnknown - May return a result - * <li> procedureNoResult - Does not return a result - * <li> procedureReturnsResult - Returns a result - * </ul> - * </ol> - * - * @param catalog - a catalog name; "" retrieves those without a - * catalog; null means drop catalog name from criteria - * @param schemaParrern - a schema name pattern; "" retrieves those - * without a schema - we ignore this parameter - * @param procedureNamePattern - a procedure name pattern - * @return ResultSet - each row is a procedure description - * @exception SQLException if a database access error occurs - */ - public java.sql.ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern) throws SQLException - { - // the field descriptors for the new ResultSet - Field f[] = new Field[8]; - ResultSet r; // ResultSet for the SQL query that we need to do - Vector v = new Vector(); // The new ResultSet tuple stuff - - byte remarks[] = defaultRemarks; - - f[0] = new Field(connection, "PROCEDURE_CAT", iVarcharOid, 32); - f[1] = new Field(connection, "PROCEDURE_SCHEM", iVarcharOid, 32); - f[2] = new Field(connection, "PROCEDURE_NAME", iVarcharOid, 32); - f[3] = f[4] = f[5] = null; // reserved, must be null for now - f[6] = new Field(connection, "REMARKS", iVarcharOid, 8192); - f[7] = new Field(connection, "PROCEDURE_TYPE", iInt2Oid, 2); - - // If the pattern is null, then set it to the default - if(procedureNamePattern==null) - procedureNamePattern="%"; - - r = connection.ExecSQL("select proname, proretset from pg_proc where proname like '"+procedureNamePattern.toLowerCase()+"' order by proname"); - - while (r.next()) - { - byte[][] tuple = new byte[8][0]; - - tuple[0] = null; // Catalog name - tuple[1] = null; // Schema name - tuple[2] = r.getBytes(1); // Procedure name - tuple[3] = tuple[4] = tuple[5] = null; // Reserved - tuple[6] = remarks; // Remarks - - if (r.getBoolean(2)) - tuple[7] = Integer.toString(java.sql.DatabaseMetaData.procedureReturnsResult).getBytes(); - else - tuple[7] = Integer.toString(java.sql.DatabaseMetaData.procedureNoResult).getBytes(); - - v.addElement(tuple); - } - return new ResultSet(connection, f, v, "OK", 1); - } - - /** - * Get a description of a catalog's stored procedure parameters - * and result columns. - * - * <p>Only descriptions matching the schema, procedure and parameter - * name criteria are returned. They are ordered by PROCEDURE_SCHEM - * and PROCEDURE_NAME. Within this, the return value, if any, is - * first. Next are the parameter descriptions in call order. The - * column descriptions follow in column number order. - * - * <p>Each row in the ResultSet is a parameter description or column - * description with the following fields: - * <ol> - * <li><b>PROCEDURE_CAT</b> String => procedure catalog (may be null) - * <li><b>PROCEDURE_SCHE</b>M String => procedure schema (may be null) - * <li><b>PROCEDURE_NAME</b> String => procedure name - * <li><b>COLUMN_NAME</b> String => column/parameter name - * <li><b>COLUMN_TYPE</b> Short => kind of column/parameter: - * <ul><li>procedureColumnUnknown - nobody knows - * <li>procedureColumnIn - IN parameter - * <li>procedureColumnInOut - INOUT parameter - * <li>procedureColumnOut - OUT parameter - * <li>procedureColumnReturn - procedure return value - * <li>procedureColumnResult - result column in ResultSet - * </ul> - * <li><b>DATA_TYPE</b> short => SQL type from java.sql.Types - * <li><b>TYPE_NAME</b> String => SQL type name - * <li><b>PRECISION</b> int => precision - * <li><b>LENGTH</b> int => length in bytes of data - * <li><b>SCALE</b> short => scale - * <li><b>RADIX</b> short => radix - * <li><b>NULLABLE</b> short => can it contain NULL? - * <ul><li>procedureNoNulls - does not allow NULL values - * <li>procedureNullable - allows NULL values - * <li>procedureNullableUnknown - nullability unknown - * <li><b>REMARKS</b> String => comment describing parameter/column - * </ol> - * @param catalog This is ignored in postgresql, advise this is set to null - * @param schemaPattern This is ignored in postgresql, advise this is set to null - * @param procedureNamePattern a procedure name pattern - * @param columnNamePattern a column name pattern - * @return each row is a stored procedure parameter or column description - * @exception SQLException if a database-access error occurs - * @see #getSearchStringEscape - */ - // Implementation note: This is required for Borland's JBuilder to work - public java.sql.ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern) throws SQLException - { - if(procedureNamePattern==null) - procedureNamePattern="%"; - - if(columnNamePattern==null) - columnNamePattern="%"; - - // for now, this returns an empty result set. - Field f[] = new Field[13]; - ResultSet r; // ResultSet for the SQL query that we need to do - Vector v = new Vector(); // The new ResultSet tuple stuff - - f[0] = new Field(connection, new String("PROCEDURE_CAT"), iVarcharOid, 32); - f[1] = new Field(connection, new String("PROCEDURE_SCHEM"), iVarcharOid, 32); - f[2] = new Field(connection, new String("PROCEDURE_NAME"), iVarcharOid, 32); - f[3] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32); - f[4] = new Field(connection, new String("COLUMN_TYPE"), iInt2Oid, 2); - f[5] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2); - f[6] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32); - f[7] = new Field(connection, new String("PRECISION"), iInt4Oid, 4); - f[8] = new Field(connection, new String("LENGTH"), iInt4Oid, 4); - f[9] = new Field(connection, new String("SCALE"), iInt2Oid, 2); - f[10] = new Field(connection, new String("RADIX"), iInt2Oid, 2); - f[11] = new Field(connection, new String("NULLABLE"), iInt2Oid, 2); - f[12] = new Field(connection, new String("REMARKS"), iVarcharOid, 32); - - // add query loop here - - return new ResultSet(connection, f, v, "OK", 1); - } - - /** - * Get a description of tables available in a catalog. - * - * <p>Only table descriptions matching the catalog, schema, table - * name and type criteria are returned. They are ordered by - * TABLE_TYPE, TABLE_SCHEM and TABLE_NAME. - * - * <p>Each table description has the following columns: - * - * <ol> - * <li><b>TABLE_CAT</b> String => table catalog (may be null) - * <li><b>TABLE_SCHEM</b> String => table schema (may be null) - * <li><b>TABLE_NAME</b> String => table name - * <li><b>TABLE_TYPE</b> String => table type. Typical types are "TABLE", - * "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY", "LOCAL - * TEMPORARY", "ALIAS", "SYNONYM". - * <li><b>REMARKS</b> String => explanatory comment on the table - * </ol> - * - * <p>The valid values for the types parameter are: - * "TABLE", "INDEX", "LARGE OBJECT", "SEQUENCE", "SYSTEM TABLE" and - * "SYSTEM INDEX" - * - * @param catalog a catalog name; For postgresql, this is ignored, and - * should be set to null - * @param schemaPattern a schema name pattern; For postgresql, this is ignored, and - * should be set to null - * @param tableNamePattern a table name pattern. For all tables this should be "%" - * @param types a list of table types to include; null returns - * all types - * @return each row is a table description - * @exception SQLException if a database-access error occurs. - */ - public java.sql.ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String types[]) throws SQLException - { - // Handle default value for types - if(types==null) - types = defaultTableTypes; - - if(tableNamePattern==null) - tableNamePattern="%"; - - // the field descriptors for the new ResultSet - Field f[] = new Field[5]; - ResultSet r; // ResultSet for the SQL query that we need to do - Vector v = new Vector(); // The new ResultSet tuple stuff - - f[0] = new Field(connection, new String("TABLE_CAT"), iVarcharOid, 32); - f[1] = new Field(connection, new String("TABLE_SCHEM"), iVarcharOid, 32); - f[2] = new Field(connection, new String("TABLE_NAME"), iVarcharOid, 32); - f[3] = new Field(connection, new String("TABLE_TYPE"), iVarcharOid, 32); - f[4] = new Field(connection, new String("REMARKS"), iVarcharOid, 32); - - // Now form the query - StringBuffer sql = new StringBuffer("select relname,oid from pg_class where ("); - boolean notFirst=false; - for(int i=0;i<types.length;i++) { - if(notFirst) - sql.append(" or "); - for(int j=0;j<getTableTypes.length;j++) - if(getTableTypes[j][0].equals(types[i])) { - sql.append(getTableTypes[j][1]); - notFirst=true; - } - } - - // Added by Stefan Andreasen <[email protected]> - // Now take the pattern into account - sql.append(") and relname like '"); - sql.append(tableNamePattern.toLowerCase()); - sql.append("'"); - - // Now run the query - r = connection.ExecSQL(sql.toString()); - - byte remarks[]; - - while (r.next()) - { - byte[][] tuple = new byte[5][0]; - - // Fetch the description for the table (if any) - ResultSet dr = connection.ExecSQL("select description from pg_description where objoid="+r.getInt(2)); - if(dr.getTupleCount()==1) { - dr.next(); - remarks = dr.getBytes(1); - } else - remarks = defaultRemarks; - dr.close(); - - tuple[0] = null; // Catalog name - tuple[1] = null; // Schema name - tuple[2] = r.getBytes(1); // Table name - tuple[3] = null; // Table type - tuple[4] = remarks; // Remarks - v.addElement(tuple); - } - r.close(); - return new ResultSet(connection, f, v, "OK", 1); - } - - // This array contains the valid values for the types argument - // in getTables(). - // - // Each supported type consists of it's name, and the sql where - // clause to retrieve that value. - // - // IMPORTANT: the query must be enclosed in ( ) - private static final String getTableTypes[][] = { - {"TABLE", "(relkind='r' and relname !~ '^pg_' and relname !~ '^xinv')"}, - {"INDEX", "(relkind='i' and relname !~ '^pg_' and relname !~ '^xinx')"}, - {"LARGE OBJECT", "(relkind='r' and relname ~ '^xinv')"}, - {"SEQUENCE", "(relkind='S' and relname !~ '^pg_')"}, - {"SYSTEM TABLE", "(relkind='r' and relname ~ '^pg_')"}, - {"SYSTEM INDEX", "(relkind='i' and relname ~ '^pg_')"} - }; - - // These are the default tables, used when NULL is passed to getTables - // The choice of these provide the same behaviour as psql's \d - private static final String defaultTableTypes[] = { - "TABLE","INDEX","SEQUENCE" - }; - - /** - * Get the schema names available in this database. The results - * are ordered by schema name. - * - * <P>The schema column is: - * <OL> - * <LI><B>TABLE_SCHEM</B> String => schema name - * </OL> - * - * @return ResultSet each row has a single String column that is a - * schema name - */ - public java.sql.ResultSet getSchemas() throws SQLException - { - // We don't use schemas, so we simply return a single schema name "". - // - Field f[] = new Field[1]; - Vector v = new Vector(); - byte[][] tuple = new byte[1][0]; - f[0] = new Field(connection,new String("TABLE_SCHEM"),iVarcharOid,32); - tuple[0] = "".getBytes(); - v.addElement(tuple); - return new ResultSet(connection,f,v,"OK",1); - } - - /** - * Get the catalog names available in this database. The results - * are ordered by catalog name. - * - * <P>The catalog column is: - * <OL> - * <LI><B>TABLE_CAT</B> String => catalog name - * </OL> - * - * @return ResultSet each row has a single String column that is a - * catalog name - */ - public java.sql.ResultSet getCatalogs() throws SQLException - { - // We don't use catalogs, so we simply return a single catalog name "". - Field f[] = new Field[1]; - Vector v = new Vector(); - byte[][] tuple = new byte[1][0]; - f[0] = new Field(connection,new String("TABLE_CAT"),iVarcharOid,32); - tuple[0] = "".getBytes(); - v.addElement(tuple); - return new ResultSet(connection,f,v,"OK",1); - } - - /** - * Get the table types available in this database. The results - * are ordered by table type. - * - * <P>The table type is: - * <OL> - * <LI><B>TABLE_TYPE</B> String => table type. Typical types are "TABLE", - * "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY", - * "LOCAL TEMPORARY", "ALIAS", "SYNONYM". - * </OL> - * - * @return ResultSet each row has a single String column that is a - * table type - */ - public java.sql.ResultSet getTableTypes() throws SQLException - { - Field f[] = new Field[1]; - Vector v = new Vector(); - byte[][] tuple = new byte[1][0]; - f[0] = new Field(connection,new String("TABLE_TYPE"),iVarcharOid,32); - for(int i=0;i<getTableTypes.length;i++) { - tuple[0] = getTableTypes[i][0].getBytes(); - v.addElement(tuple); - } - return new ResultSet(connection,f,v,"OK",1); - } - - /** - * Get a description of table columns available in a catalog. - * - * <P>Only column descriptions matching the catalog, schema, table - * and column name criteria are returned. They are ordered by - * TABLE_SCHEM, TABLE_NAME and ORDINAL_POSITION. - * - * <P>Each column description has the following columns: - * <OL> - * <LI><B>TABLE_CAT</B> String => table catalog (may be null) - * <LI><B>TABLE_SCHEM</B> String => table schema (may be null) - * <LI><B>TABLE_NAME</B> String => table name - * <LI><B>COLUMN_NAME</B> String => column name - * <LI><B>DATA_TYPE</B> short => SQL type from java.sql.Types - * <LI><B>TYPE_NAME</B> String => Data source dependent type name - * <LI><B>COLUMN_SIZE</B> int => column size. For char or date - * types this is the maximum number of characters, for numeric or - * decimal types this is precision. - * <LI><B>BUFFER_LENGTH</B> is not used. - * <LI><B>DECIMAL_DIGITS</B> int => the number of fractional digits - * <LI><B>NUM_PREC_RADIX</B> int => Radix (typically either 10 or 2) - * <LI><B>NULLABLE</B> int => is NULL allowed? - * <UL> - * <LI> columnNoNulls - might not allow NULL values - * <LI> columnNullable - definitely allows NULL values - * <LI> columnNullableUnknown - nullability unknown - * </UL> - * <LI><B>REMARKS</B> String => comment describing column (may be null) - * <LI><B>COLUMN_DEF</B> String => default value (may be null) - * <LI><B>SQL_DATA_TYPE</B> int => unused - * <LI><B>SQL_DATETIME_SUB</B> int => unused - * <LI><B>CHAR_OCTET_LENGTH</B> int => for char types the - * maximum number of bytes in the column - * <LI><B>ORDINAL_POSITION</B> int => index of column in table - * (starting at 1) - * <LI><B>IS_NULLABLE</B> String => "NO" means column definitely - * does not allow NULL values; "YES" means the column might - * allow NULL values. An empty string means nobody knows. - * </OL> - * - * @param catalog a catalog name; "" retrieves those without a catalog - * @param schemaPattern a schema name pattern; "" retrieves those - * without a schema - * @param tableNamePattern a table name pattern - * @param columnNamePattern a column name pattern - * @return ResultSet each row is a column description - * @see #getSearchStringEscape - */ - public java.sql.ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException - { - // the field descriptors for the new ResultSet - Field f[] = new Field[18]; - ResultSet r; // ResultSet for the SQL query that we need to do - Vector v = new Vector(); // The new ResultSet tuple stuff - - f[0] = new Field(connection, new String("TABLE_CAT"), iVarcharOid, 32); - f[1] = new Field(connection, new String("TABLE_SCHEM"), iVarcharOid, 32); - f[2] = new Field(connection, new String("TABLE_NAME"), iVarcharOid, 32); - f[3] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32); - f[4] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2); - f[5] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32); - f[6] = new Field(connection, new String("COLUMN_SIZE"), iInt4Oid, 4); - f[7] = new Field(connection, new String("BUFFER_LENGTH"), iVarcharOid, 32); - f[8] = new Field(connection, new String("DECIMAL_DIGITS"), iInt4Oid, 4); - f[9] = new Field(connection, new String("NUM_PREC_RADIX"), iInt4Oid, 4); - f[10] = new Field(connection, new String("NULLABLE"), iInt4Oid, 4); - f[11] = new Field(connection, new String("REMARKS"), iVarcharOid, 32); - f[12] = new Field(connection, new String("COLUMN_DEF"), iVarcharOid, 32); - f[13] = new Field(connection, new String("SQL_DATA_TYPE"), iInt4Oid, 4); - f[14] = new Field(connection, new String("SQL_DATETIME_SUB"), iInt4Oid, 4); - f[15] = new Field(connection, new String("CHAR_OCTET_LENGTH"), iVarcharOid, 32); - f[16] = new Field(connection, new String("ORDINAL_POSITION"), iInt4Oid,4); - f[17] = new Field(connection, new String("IS_NULLABLE"), iVarcharOid, 32); - - // Added by Stefan Andreasen <[email protected]> - // If the pattern are null then set them to % - if (tableNamePattern == null) tableNamePattern="%"; - if (columnNamePattern == null) columnNamePattern="%"; - - // Now form the query - // Modified by Stefan Andreasen <[email protected]> - r = connection.ExecSQL("select a.oid,c.relname,a.attname,a.atttypid,a.attnum,a.attnotnull,a.attlen,a.atttypmod from pg_class c, pg_attribute a where a.attrelid=c.oid and c.relname like '"+tableNamePattern.toLowerCase()+"' and a.attname like '"+columnNamePattern.toLowerCase()+"' and a.attnum>0 order by c.relname,a.attnum"); - - byte remarks[]; - - while(r.next()) { - byte[][] tuple = new byte[18][0]; - - // Fetch the description for the table (if any) - ResultSet dr = connection.ExecSQL("select description from pg_description where objoid="+r.getInt(1)); - if(dr.getTupleCount()==1) { - dr.next(); - tuple[11] = dr.getBytes(1); - } else - tuple[11] = defaultRemarks; - - dr.close(); - - tuple[0] = "".getBytes(); // Catalog name - tuple[1] = "".getBytes(); // Schema name - tuple[2] = r.getBytes(2); // Table name - tuple[3] = r.getBytes(3); // Column name - - dr = connection.ExecSQL("select typname from pg_type where oid = "+r.getString(4)); - dr.next(); - String typname=dr.getString(1); - dr.close(); - tuple[4] = Integer.toString(Field.getSQLType(typname)).getBytes(); // Data type - tuple[5] = typname.getBytes(); // Type name - - // Column size - // Looking at the psql source, - // I think the length of a varchar as specified when the table was created - // should be extracted from atttypmod which contains this length + sizeof(int32) - if (typname.equals("bpchar") || typname.equals("varchar")) { - int atttypmod = r.getInt(8); - tuple[6] = Integer.toString(atttypmod != -1 ? atttypmod - VARHDRSZ : 0).getBytes(); - } else - tuple[6] = r.getBytes(7); - - tuple[7] = null; // Buffer length - - tuple[8] = "0".getBytes(); // Decimal Digits - how to get this? - tuple[9] = "10".getBytes(); // Num Prec Radix - assume decimal - - // tuple[10] is below - // tuple[11] is above - - tuple[12] = null; // column default - - tuple[13] = null; // sql data type (unused) - tuple[14] = null; // sql datetime sub (unused) - - tuple[15] = tuple[6]; // char octet length - - tuple[16] = r.getBytes(5); // ordinal position - - String nullFlag = r.getString(6); - tuple[10] = Integer.toString(nullFlag.equals("f")?java.sql.DatabaseMetaData.columnNullable:java.sql.DatabaseMetaData.columnNoNulls).getBytes(); // Nullable - tuple[17] = (nullFlag.equals("f")?"YES":"NO").getBytes(); // is nullable - - v.addElement(tuple); - } - r.close(); - return new ResultSet(connection, f, v, "OK", 1); - } - - /** - * Get a description of the access rights for a table's columns. - * - * <P>Only privileges matching the column name criteria are - * returned. They are ordered by COLUMN_NAME and PRIVILEGE. - * - * <P>Each privilige description has the following columns: - * <OL> - * <LI><B>TABLE_CAT</B> String => table catalog (may be null) - * <LI><B>TABLE_SCHEM</B> String => table schema (may be null) - * <LI><B>TABLE_NAME</B> String => table name - * <LI><B>COLUMN_NAME</B> String => column name - * <LI><B>GRANTOR</B> => grantor of access (may be null) - * <LI><B>GRANTEE</B> String => grantee of access - * <LI><B>PRIVILEGE</B> String => name of access (SELECT, - * INSERT, UPDATE, REFRENCES, ...) - * <LI><B>IS_GRANTABLE</B> String => "YES" if grantee is permitted - * to grant to others; "NO" if not; null if unknown - * </OL> - * - * @param catalog a catalog name; "" retrieves those without a catalog - * @param schema a schema name; "" retrieves those without a schema - * @param table a table name - * @param columnNamePattern a column name pattern - * @return ResultSet each row is a column privilege description - * @see #getSearchStringEscape - */ - public java.sql.ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern) throws SQLException - { - Field f[] = new Field[8]; - Vector v = new Vector(); - - if(table==null) - table="%"; - - if(columnNamePattern==null) - columnNamePattern="%"; - else - columnNamePattern=columnNamePattern.toLowerCase(); - - f[0] = new Field(connection,new String("TABLE_CAT"),iVarcharOid,32); - f[1] = new Field(connection,new String("TABLE_SCHEM"),iVarcharOid,32); - f[2] = new Field(connection,new String("TABLE_NAME"),iVarcharOid,32); - f[3] = new Field(connection,new String("COLUMN_NAME"),iVarcharOid,32); - f[4] = new Field(connection,new String("GRANTOR"),iVarcharOid,32); - f[5] = new Field(connection,new String("GRANTEE"),iVarcharOid,32); - f[6] = new Field(connection,new String("PRIVILEGE"),iVarcharOid,32); - f[7] = new Field(connection,new String("IS_GRANTABLE"),iVarcharOid,32); - - // This is taken direct from the psql source - ResultSet r = connection.ExecSQL("SELECT relname, relacl FROM pg_class, pg_user WHERE ( relkind = 'r' OR relkind = 'i') and relname !~ '^pg_' and relname !~ '^xin[vx][0-9]+' and usesysid = relowner and relname like '"+table.toLowerCase()+"' ORDER BY relname"); - while(r.next()) { - byte[][] tuple = new byte[8][0]; - tuple[0] = tuple[1]= "".getBytes(); - DriverManager.println("relname=\""+r.getString(1)+"\" relacl=\""+r.getString(2)+"\""); - - // For now, don't add to the result as relacl needs to be processed. - //v.addElement(tuple); - } - - return new ResultSet(connection,f,v,"OK",1); - } - - /** - * Get a description of the access rights for each table available - * in a catalog. - * - * <P>Only privileges matching the schema and table name - * criteria are returned. They are ordered by TABLE_SCHEM, - * TABLE_NAME, and PRIVILEGE. - * - * <P>Each privilige description has the following columns: - * <OL> - * <LI><B>TABLE_CAT</B> String => table catalog (may be null) - * <LI><B>TABLE_SCHEM</B> String => table schema (may be null) - * <LI><B>TABLE_NAME</B> String => table name - * <LI><B>COLUMN_NAME</B> String => column name - * <LI><B>GRANTOR</B> => grantor of access (may be null) - * <LI><B>GRANTEE</B> String => grantee of access - * <LI><B>PRIVILEGE</B> String => name of access (SELECT, - * INSERT, UPDATE, REFRENCES, ...) - * <LI><B>IS_GRANTABLE</B> String => "YES" if grantee is permitted - * to grant to others; "NO" if not; null if unknown - * </OL> - * - * @param catalog a catalog name; "" retrieves those without a catalog - * @param schemaPattern a schema name pattern; "" retrieves those - * without a schema - * @param tableNamePattern a table name pattern - * @return ResultSet each row is a table privilege description - * @see #getSearchStringEscape - */ - public java.sql.ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern) throws SQLException - { - // XXX-Not Implemented - return null; - } - - /** - * Get a description of a table's optimal set of columns that - * uniquely identifies a row. They are ordered by SCOPE. - * - * <P>Each column description has the following columns: - * <OL> - * <LI><B>SCOPE</B> short => actual scope of result - * <UL> - * <LI> bestRowTemporary - very temporary, while using row - * <LI> bestRowTransaction - valid for remainder of current transaction - * <LI> bestRowSession - valid for remainder of current session - * </UL> - * <LI><B>COLUMN_NAME</B> String => column name - * <LI><B>DATA_TYPE</B> short => SQL data type from java.sql.Types - * <LI><B>TYPE_NAME</B> String => Data source dependent type name - * <LI><B>COLUMN_SIZE</B> int => precision - * <LI><B>BUFFER_LENGTH</B> int => not used - * <LI><B>DECIMAL_DIGITS</B> short => scale - * <LI><B>PSEUDO_COLUMN</B> short => is this a pseudo column - * like an Oracle ROWID - * <UL> - * <LI> bestRowUnknown - may or may not be pseudo column - * <LI> bestRowNotPseudo - is NOT a pseudo column - * <LI> bestRowPseudo - is a pseudo column - * </UL> - * </OL> - * - * @param catalog a catalog name; "" retrieves those without a catalog - * @param schema a schema name; "" retrieves those without a schema - * @param table a table name - * @param scope the scope of interest; use same values as SCOPE - * @param nullable include columns that are nullable? - * @return ResultSet each row is a column description - */ - // Implementation note: This is required for Borland's JBuilder to work - public java.sql.ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable) throws SQLException - { - // for now, this returns an empty result set. - Field f[] = new Field[8]; - ResultSet r; // ResultSet for the SQL query that we need to do - Vector v = new Vector(); // The new ResultSet tuple stuff - - f[0] = new Field(connection, new String("SCOPE"), iInt2Oid, 2); - f[1] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32); - f[2] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2); - f[3] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32); - f[4] = new Field(connection, new String("COLUMN_SIZE"), iInt4Oid, 4); - f[5] = new Field(connection, new String("BUFFER_LENGTH"), iInt4Oid, 4); - f[6] = new Field(connection, new String("DECIMAL_DIGITS"), iInt2Oid, 2); - f[7] = new Field(connection, new String("PSEUDO_COLUMN"), iInt2Oid, 2); - - return new ResultSet(connection, f, v, "OK", 1); - } - - /** - * Get a description of a table's columns that are automatically - * updated when any value in a row is updated. They are - * unordered. - * - * <P>Each column description has the following columns: - * <OL> - * <LI><B>SCOPE</B> short => is not used - * <LI><B>COLUMN_NAME</B> String => column name - * <LI><B>DATA_TYPE</B> short => SQL data type from java.sql.Types - * <LI><B>TYPE_NAME</B> String => Data source dependent type name - * <LI><B>COLUMN_SIZE</B> int => precision - * <LI><B>BUFFER_LENGTH</B> int => length of column value in bytes - * <LI><B>DECIMAL_DIGITS</B> short => scale - * <LI><B>PSEUDO_COLUMN</B> short => is this a pseudo column - * like an Oracle ROWID - * <UL> - * <LI> versionColumnUnknown - may or may not be pseudo column - * <LI> versionColumnNotPseudo - is NOT a pseudo column - * <LI> versionColumnPseudo - is a pseudo column - * </UL> - * </OL> - * - * @param catalog a catalog name; "" retrieves those without a catalog - * @param schema a schema name; "" retrieves those without a schema - * @param table a table name - * @return ResultSet each row is a column description - */ - public java.sql.ResultSet getVersionColumns(String catalog, String schema, String table) throws SQLException - { - // XXX-Not Implemented - return null; - } - - /** - * Get a description of a table's primary key columns. They - * are ordered by COLUMN_NAME. - * - * <P>Each column description has the following columns: - * <OL> - * <LI><B>TABLE_CAT</B> String => table catalog (may be null) - * <LI><B>TABLE_SCHEM</B> String => table schema (may be null) - * <LI><B>TABLE_NAME</B> String => table name - * <LI><B>COLUMN_NAME</B> String => column name - * <LI><B>KEY_SEQ</B> short => sequence number within primary key - * <LI><B>PK_NAME</B> String => primary key name (may be null) - * </OL> - * - * @param catalog a catalog name; "" retrieves those without a catalog - * @param schema a schema name pattern; "" retrieves those - * without a schema - * @param table a table name - * @return ResultSet each row is a primary key column description - */ - public java.sql.ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException - { - return connection.createStatement().executeQuery("SELECT " + - "'' as TABLE_CAT," + - "'' AS TABLE_SCHEM," + - "bc.relname AS TABLE_NAME," + - "ic.relname AS COLUMN_NAME," + - "'1' as KEY_SEQ,"+ // -- fake it as a String for now - "t.typname as PK_NAME " + - " FROM pg_class bc, pg_class ic, pg_index i, pg_attribute a, pg_type t " + - " WHERE bc.relkind = 'r' " + // -- not indices - " and bc.relname ~ '"+table+"'" + - " and i.indrelid = bc.oid" + - " and i.indexrelid = ic.oid" + - " and i.indkey[0] = a.attnum" + - " and i.indproc = '0'::oid" + - " and a.attrelid = bc.oid" + - " ORDER BY TABLE_NAME, COLUMN_NAME;" - ); - } - - /** - * Get a description of the primary key columns that are - * referenced by a table's foreign key columns (the primary keys - * imported by a table). They are ordered by PKTABLE_CAT, - * PKTABLE_SCHEM, PKTABLE_NAME, and KEY_SEQ. - * - * <P>Each primary key column description has the following columns: - * <OL> - * <LI><B>PKTABLE_CAT</B> String => primary key table catalog - * being imported (may be null) - * <LI><B>PKTABLE_SCHEM</B> String => primary key table schema - * being imported (may be null) - * <LI><B>PKTABLE_NAME</B> String => primary key table name - * being imported - * <LI><B>PKCOLUMN_NAME</B> String => primary key column name - * being imported - * <LI><B>FKTABLE_CAT</B> String => foreign key table catalog (may be null) - * <LI><B>FKTABLE_SCHEM</B> String => foreign key table schema (may be null) - * <LI><B>FKTABLE_NAME</B> String => foreign key table name - * <LI><B>FKCOLUMN_NAME</B> String => foreign key column name - * <LI><B>KEY_SEQ</B> short => sequence number within foreign key - * <LI><B>UPDATE_RULE</B> short => What happens to - * foreign key when primary is updated: - * <UL> - * <LI> importedKeyCascade - change imported key to agree - * with primary key update - * <LI> importedKeyRestrict - do not allow update of primary - * key if it has been imported - * <LI> importedKeySetNull - change imported key to NULL if - * its primary key has been updated - * </UL> - * <LI><B>DELETE_RULE</B> short => What happens to - * the foreign key when primary is deleted. - * <UL> - * <LI> importedKeyCascade - delete rows that import a deleted key - * <LI> importedKeyRestrict - do not allow delete of primary - * key if it has been imported - * <LI> importedKeySetNull - change imported key to NULL if - * its primary key has been deleted - * </UL> - * <LI><B>FK_NAME</B> String => foreign key name (may be null) - * <LI><B>PK_NAME</B> String => primary key name (may be null) - * </OL> - * - * @param catalog a catalog name; "" retrieves those without a catalog - * @param schema a schema name pattern; "" retrieves those - * without a schema - * @param table a table name - * @return ResultSet each row is a primary key column description - * @see #getExportedKeys - */ - public java.sql.ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException - { - // XXX-Not Implemented - return null; - } - - /** - * Get a description of a foreign key columns that reference a - * table's primary key columns (the foreign keys exported by a - * table). They are ordered by FKTABLE_CAT, FKTABLE_SCHEM, - * FKTABLE_NAME, and KEY_SEQ. - * - * <P>Each foreign key column description has the following columns: - * <OL> - * <LI><B>PKTABLE_CAT</B> String => primary key table catalog (may be null) - * <LI><B>PKTABLE_SCHEM</B> String => primary key table schema (may be null) - * <LI><B>PKTABLE_NAME</B> String => primary key table name - * <LI><B>PKCOLUMN_NAME</B> String => primary key column name - * <LI><B>FKTABLE_CAT</B> String => foreign key table catalog (may be null) - * being exported (may be null) - * <LI><B>FKTABLE_SCHEM</B> String => foreign key table schema (may be null) - * being exported (may be null) - * <LI><B>FKTABLE_NAME</B> String => foreign key table name - * being exported - * <LI><B>FKCOLUMN_NAME</B> String => foreign key column name - * being exported - * <LI><B>KEY_SEQ</B> short => sequence number within foreign key - * <LI><B>UPDATE_RULE</B> short => What happens to - * foreign key when primary is updated: - * <UL> - * <LI> importedKeyCascade - change imported key to agree - * with primary key update - * <LI> importedKeyRestrict - do not allow update of primary - * key if it has been imported - * <LI> importedKeySetNull - change imported key to NULL if - * its primary key has been updated - * </UL> - * <LI><B>DELETE_RULE</B> short => What happens to - * the foreign key when primary is deleted. - * <UL> - * <LI> importedKeyCascade - delete rows that import a deleted key - * <LI> importedKeyRestrict - do not allow delete of primary - * key if it has been imported - * <LI> importedKeySetNull - change imported key to NULL if - * its primary key has been deleted - * </UL> - * <LI><B>FK_NAME</B> String => foreign key identifier (may be null) - * <LI><B>PK_NAME</B> String => primary key identifier (may be null) - * </OL> - * - * @param catalog a catalog name; "" retrieves those without a catalog - * @param schema a schema name pattern; "" retrieves those - * without a schema - * @param table a table name - * @return ResultSet each row is a foreign key column description - * @see #getImportedKeys - */ - public java.sql.ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException - { - // XXX-Not Implemented - return null; - } - - /** - * Get a description of the foreign key columns in the foreign key - * table that reference the primary key columns of the primary key - * table (describe how one table imports another's key.) This - * should normally return a single foreign key/primary key pair - * (most tables only import a foreign key from a table once.) They - * are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and - * KEY_SEQ. - * - * <P>Each foreign key column description has the following columns: - * <OL> - * <LI><B>PKTABLE_CAT</B> String => primary key table catalog (may be null) - * <LI><B>PKTABLE_SCHEM</B> String => primary key table schema (may be null) - * <LI><B>PKTABLE_NAME</B> String => primary key table name - * <LI><B>PKCOLUMN_NAME</B> String => primary key column name - * <LI><B>FKTABLE_CAT</B> String => foreign key table catalog (may be null) - * being exported (may be null) - * <LI><B>FKTABLE_SCHEM</B> String => foreign key table schema (may be null) - * being exported (may be null) - * <LI><B>FKTABLE_NAME</B> String => foreign key table name - * being exported - * <LI><B>FKCOLUMN_NAME</B> String => foreign key column name - * being exported - * <LI><B>KEY_SEQ</B> short => sequence number within foreign key - * <LI><B>UPDATE_RULE</B> short => What happens to - * foreign key when primary is updated: - * <UL> - * <LI> importedKeyCascade - change imported key to agree - * with primary key update - * <LI> importedKeyRestrict - do not allow update of primary - * key if it has been imported - * <LI> importedKeySetNull - change imported key to NULL if - * its primary key has been updated - * </UL> - * <LI><B>DELETE_RULE</B> short => What happens to - * the foreign key when primary is deleted. - * <UL> - * <LI> importedKeyCascade - delete rows that import a deleted key - * <LI> importedKeyRestrict - do not allow delete of primary - * key if it has been imported - * <LI> importedKeySetNull - change imported key to NULL if - * its primary key has been deleted - * </UL> - * <LI><B>FK_NAME</B> String => foreign key identifier (may be null) - * <LI><B>PK_NAME</B> String => primary key identifier (may be null) - * </OL> - * - * @param catalog a catalog name; "" retrieves those without a catalog - * @param schema a schema name pattern; "" retrieves those - * without a schema - * @param table a table name - * @return ResultSet each row is a foreign key column description - * @see #getImportedKeys - */ - public java.sql.ResultSet getCrossReference(String primaryCatalog, String primarySchema, String primaryTable, String foreignCatalog, String foreignSchema, String foreignTable) throws SQLException - { - // XXX-Not Implemented - return null; - } - - /** - * Get a description of all the standard SQL types supported by - * this database. They are ordered by DATA_TYPE and then by how - * closely the data type maps to the corresponding JDBC SQL type. - * - * <P>Each type description has the following columns: - * <OL> - * <LI><B>TYPE_NAME</B> String => Type name - * <LI><B>DATA_TYPE</B> short => SQL data type from java.sql.Types - * <LI><B>PRECISION</B> int => maximum precision - * <LI><B>LITERAL_PREFIX</B> String => prefix used to quote a literal - * (may be null) - * <LI><B>LITERAL_SUFFIX</B> String => suffix used to quote a literal - (may be null) - * <LI><B>CREATE_PARAMS</B> String => parameters used in creating - * the type (may be null) - * <LI><B>NULLABLE</B> short => can you use NULL for this type? - * <UL> - * <LI> typeNoNulls - does not allow NULL values - * <LI> typeNullable - allows NULL values - * <LI> typeNullableUnknown - nullability unknown - * </UL> - * <LI><B>CASE_SENSITIVE</B> boolean=> is it case sensitive? - * <LI><B>SEARCHABLE</B> short => can you use "WHERE" based on this type: - * <UL> - * <LI> typePredNone - No support - * <LI> typePredChar - Only supported with WHERE .. LIKE - * <LI> typePredBasic - Supported except for WHERE .. LIKE - * <LI> typeSearchable - Supported for all WHERE .. - * </UL> - * <LI><B>UNSIGNED_ATTRIBUTE</B> boolean => is it unsigned? - * <LI><B>FIXED_PREC_SCALE</B> boolean => can it be a money value? - * <LI><B>AUTO_INCREMENT</B> boolean => can it be used for an - * auto-increment value? - * <LI><B>LOCAL_TYPE_NAME</B> String => localized version of type name - * (may be null) - * <LI><B>MINIMUM_SCALE</B> short => minimum scale supported - * <LI><B>MAXIMUM_SCALE</B> short => maximum scale supported - * <LI><B>SQL_DATA_TYPE</B> int => unused - * <LI><B>SQL_DATETIME_SUB</B> int => unused - * <LI><B>NUM_PREC_RADIX</B> int => usually 2 or 10 - * </OL> - * - * @return ResultSet each row is a SQL type description - */ - public java.sql.ResultSet getTypeInfo() throws SQLException - { - ResultSet rs = connection.ExecSQL("select typname from pg_type"); - if(rs!=null) { - Field f[] = new Field[18]; - ResultSet r; // ResultSet for the SQL query that we need to do - Vector v = new Vector(); // The new ResultSet tuple stuff - - f[0] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32); - f[1] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2); - f[2] = new Field(connection, new String("PRECISION"), iInt4Oid, 4); - f[3] = new Field(connection, new String("LITERAL_PREFIX"), iVarcharOid, 32); - f[4] = new Field(connection, new String("LITERAL_SUFFIX"), iVarcharOid, 32); - f[5] = new Field(connection, new String("CREATE_PARAMS"), iVarcharOid, 32); - f[6] = new Field(connection, new String("NULLABLE"), iInt2Oid, 2); - f[7] = new Field(connection, new String("CASE_SENSITIVE"), iBoolOid, 1); - f[8] = new Field(connection, new String("SEARCHABLE"), iInt2Oid, 2); - f[9] = new Field(connection, new String("UNSIGNED_ATTRIBUTE"), iBoolOid, 1); - f[10] = new Field(connection, new String("FIXED_PREC_SCALE"), iBoolOid, 1); - f[11] = new Field(connection, new String("AUTO_INCREMENT"), iBoolOid, 1); - f[12] = new Field(connection, new String("LOCAL_TYPE_NAME"), iVarcharOid, 32); - f[13] = new Field(connection, new String("MINIMUM_SCALE"), iInt2Oid, 2); - f[14] = new Field(connection, new String("MAXIMUM_SCALE"), iInt2Oid, 2); - f[15] = new Field(connection, new String("SQL_DATA_TYPE"), iInt4Oid, 4); - f[16] = new Field(connection, new String("SQL_DATETIME_SUB"), iInt4Oid, 4); - f[17] = new Field(connection, new String("NUM_PREC_RADIX"), iInt4Oid, 4); - - // cache some results, this will keep memory useage down, and speed - // things up a little. - byte b9[] = "9".getBytes(); - byte b10[] = "10".getBytes(); - byte bf[] = "f".getBytes(); - byte bnn[] = Integer.toString(typeNoNulls).getBytes(); - byte bts[] = Integer.toString(typeSearchable).getBytes(); - - while(rs.next()) { - byte[][] tuple = new byte[18][]; - String typname=rs.getString(1); - tuple[0] = typname.getBytes(); - tuple[1] = Integer.toString(Field.getSQLType(typname)).getBytes(); - tuple[2] = b9; // for now - tuple[6] = bnn; // for now - tuple[7] = bf; // false for now - not case sensitive - tuple[8] = bts; - tuple[9] = bf; // false for now - it's signed - tuple[10] = bf; // false for now - must handle money - tuple[11] = bf; // false for now - handle autoincrement - // 12 - LOCAL_TYPE_NAME is null - // 13 & 14 ? - // 15 & 16 are unused so we return null - tuple[17] = b10; // everything is base 10 - v.addElement(tuple); - } - rs.close(); - return new ResultSet(connection, f, v, "OK", 1); - } - - return null; - } - - /** - * Get a description of a table's indices and statistics. They are - * ordered by NON_UNIQUE, TYPE, INDEX_NAME, and ORDINAL_POSITION. - * - * <P>Each index column description has the following columns: - * <OL> - * <LI><B>TABLE_CAT</B> String => table catalog (may be null) - * <LI><B>TABLE_SCHEM</B> String => table schema (may be null) - * <LI><B>TABLE_NAME</B> String => table name - * <LI><B>NON_UNIQUE</B> boolean => Can index values be non-unique? - * false when TYPE is tableIndexStatistic - * <LI><B>INDEX_QUALIFIER</B> String => index catalog (may be null); - * null when TYPE is tableIndexStatistic - * <LI><B>INDEX_NAME</B> String => index name; null when TYPE is - * tableIndexStatistic - * <LI><B>TYPE</B> short => index type: - * <UL> - * <LI> tableIndexStatistic - this identifies table statistics that are - * returned in conjuction with a table's index descriptions - * <LI> tableIndexClustered - this is a clustered index - * <LI> tableIndexHashed - this is a hashed index - * <LI> tableIndexOther - this is some other style of index - * </UL> - * <LI><B>ORDINAL_POSITION</B> short => column sequence number - * within index; zero when TYPE is tableIndexStatistic - * <LI><B>COLUMN_NAME</B> String => column name; null when TYPE is - * tableIndexStatistic - * <LI><B>ASC_OR_DESC</B> String => column sort sequence, "A" => ascending - * "D" => descending, may be null if sort sequence is not supported; - * null when TYPE is tableIndexStatistic - * <LI><B>CARDINALITY</B> int => When TYPE is tableIndexStatisic then - * this is the number of rows in the table; otherwise it is the - * number of unique values in the index. - * <LI><B>PAGES</B> int => When TYPE is tableIndexStatisic then - * this is the number of pages used for the table, otherwise it - * is the number of pages used for the current index. - * <LI><B>FILTER_CONDITION</B> String => Filter condition, if any. - * (may be null) - * </OL> - * - * @param catalog a catalog name; "" retrieves those without a catalog - * @param schema a schema name pattern; "" retrieves those without a schema - * @param table a table name - * @param unique when true, return only indices for unique values; - * when false, return indices regardless of whether unique or not - * @param approximate when true, result is allowed to reflect approximate - * or out of data values; when false, results are requested to be - * accurate - * @return ResultSet each row is an index column description - */ - // Implementation note: This is required for Borland's JBuilder to work - public java.sql.ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate) throws SQLException - { - // for now, this returns an empty result set. - Field f[] = new Field[13]; - ResultSet r; // ResultSet for the SQL query that we need to do - Vector v = new Vector(); // The new ResultSet tuple stuff - - f[0] = new Field(connection, new String("TABLE_CAT"), iVarcharOid, 32); - f[1] = new Field(connection, new String("TABLE_SCHEM"), iVarcharOid, 32); - f[2] = new Field(connection, new String("TABLE_NAME"), iVarcharOid, 32); - f[3] = new Field(connection, new String("NON_UNIQUE"), iBoolOid, 1); - f[4] = new Field(connection, new String("INDEX_QUALIFIER"), iVarcharOid, 32); - f[5] = new Field(connection, new String("INDEX_NAME"), iVarcharOid, 32); - f[6] = new Field(connection, new String("TYPE"), iInt2Oid, 2); - f[7] = new Field(connection, new String("ORDINAL_POSITION"), iInt2Oid, 2); - f[8] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32); - f[9] = new Field(connection, new String("ASC_OR_DESC"), iVarcharOid, 32); - f[10] = new Field(connection, new String("CARDINALITY"), iInt4Oid, 4); - f[11] = new Field(connection, new String("PAGES"), iInt4Oid, 4); - f[12] = new Field(connection, new String("FILTER_CONDITION"), iVarcharOid, 32); - - return new ResultSet(connection, f, v, "OK", 1); - } -} - |