Fix operator properties page

The pg_operator table changed in 8.3. I hadn't found an appropriate
has*() method to reflect this change and its point :(

3 files changed, 56 insertions, 16 deletions

diff --git a/classes/database/Postgres.php b/classes/database/Postgres.php
index 5e4dba0b..80167f64 100755
--- a/classes/database/Postgres.php
+++ b/classes/database/Postgres.php
@@ -5148,12 +5148,9 @@ class Postgres extends ADODB_base {
 				oprright::pg_catalog.regtype AS oprrightname,
 				oprresult::pg_catalog.regtype AS resultname,
 				po.oprcanhash,
+				oprcanmerge,
 				oprcom::pg_catalog.regoperator AS oprcom,
 				oprnegate::pg_catalog.regoperator AS oprnegate,
-				oprlsortop::pg_catalog.regoperator AS oprlsortop,
-				oprrsortop::pg_catalog.regoperator AS oprrsortop,
-				oprltcmpop::pg_catalog.regoperator AS oprltcmpop,
-				oprgtcmpop::pg_catalog.regoperator AS oprgtcmpop,
 				po.oprcode::pg_catalog.regproc AS oprcode,
 				po.oprrest::pg_catalog.regproc AS oprrest,
 				po.oprjoin::pg_catalog.regproc AS oprjoin
diff --git a/classes/database/Postgres82.php b/classes/database/Postgres82.php
index c7cf58c1..19e5fd37 100644
--- a/classes/database/Postgres82.php
+++ b/classes/database/Postgres82.php
@@ -282,6 +282,41 @@ class Postgres82 extends Postgres83 {
 		return $this->execute($sql);
 	}
 
+	// Operator functions
+
+	/**
+	 * Returns all details for a particular operator
+	 * @param $operator_oid The oid of the operator
+	 * @return Function info
+	 */
+	function getOperator($operator_oid) {
+		$this->clean($operator_oid);
+
+		$sql = "
+			SELECT
+				po.oid, po.oprname,
+				oprleft::pg_catalog.regtype AS oprleftname,
+				oprright::pg_catalog.regtype AS oprrightname,
+				oprresult::pg_catalog.regtype AS resultname,
+				po.oprcanhash,
+				oprcom::pg_catalog.regoperator AS oprcom,
+				oprnegate::pg_catalog.regoperator AS oprnegate,
+				oprlsortop::pg_catalog.regoperator AS oprlsortop,
+				oprrsortop::pg_catalog.regoperator AS oprrsortop,
+				oprltcmpop::pg_catalog.regoperator AS oprltcmpop,
+				oprgtcmpop::pg_catalog.regoperator AS oprgtcmpop,
+				po.oprcode::pg_catalog.regproc AS oprcode,
+				po.oprrest::pg_catalog.regproc AS oprrest,
+				po.oprjoin::pg_catalog.regproc AS oprjoin
+			FROM
+				pg_catalog.pg_operator po
+			WHERE
+				po.oid='{$operator_oid}'
+		";
+
+		return $this->selectSet($sql);
+	}
+
 	// Operator Class functions
 
 	/**
diff --git a/operators.php b/operators.php
index 555ba0ac..14475199 100644
--- a/operators.php
+++ b/operators.php
@@ -42,18 +42,26 @@
 			echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprjoin']), "</td></tr>\n";
 			echo "<tr><th class=\"data left\">{$lang['strhashes']}</th>\n";
 			echo "<td class=\"data1\">", ($oprdata->fields['oprcanhash']) ? $lang['stryes'] : $lang['strno'], "</td></tr>\n";
-			echo "<tr><th class=\"data left\">{$lang['strmerges']}</th>\n";
-			echo "<td class=\"data1\">", ($oprdata->fields['oprlsortop'] !== '0' && $oprdata->fields['oprrsortop'] !== '0') ? $lang['stryes'] : $lang['strno'], "</td></tr>\n";
-			echo "<tr><th class=\"data left\">{$lang['strrestrict']}</th>\n";
-			echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprrest']), "</td></tr>\n";
-			echo "<tr><th class=\"data left\">{$lang['strleftsort']}</th>\n";
-			echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprlsortop']), "</td></tr>\n";
-			echo "<tr><th class=\"data left\">{$lang['strrightsort']}</th>\n";
-			echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprrsortop']), "</td></tr>\n";
-			echo "<tr><th class=\"data left\">{$lang['strlessthan']}</th>\n";
-			echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprltcmpop']), "</td></tr>\n";
-			echo "<tr><th class=\"data left\">{$lang['strgreaterthan']}</th>\n";
-			echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprgtcmpop']), "</td></tr>\n";
+
+			/* these field only exists in 8.2 and before in pg_catalog */
+			if (isset($oprdata->fields['oprlsortop'])) {
+				echo "<tr><th class=\"data left\">{$lang['strmerges']}</th>\n";
+				echo "<td class=\"data1\">", ($oprdata->fields['oprlsortop'] !== '0' && $oprdata->fields['oprrsortop'] !== '0') ? $lang['stryes'] : $lang['strno'], "</td></tr>\n";
+				echo "<tr><th class=\"data left\">{$lang['strrestrict']}</th>\n";
+				echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprrest']), "</td></tr>\n";
+				echo "<tr><th class=\"data left\">{$lang['strleftsort']}</th>\n";
+				echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprlsortop']), "</td></tr>\n";
+				echo "<tr><th class=\"data left\">{$lang['strrightsort']}</th>\n";
+				echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprrsortop']), "</td></tr>\n";
+				echo "<tr><th class=\"data left\">{$lang['strlessthan']}</th>\n";
+				echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprltcmpop']), "</td></tr>\n";
+				echo "<tr><th class=\"data left\">{$lang['strgreaterthan']}</th>\n";
+				echo "<td class=\"data1\">", $misc->printVal($oprdata->fields['oprgtcmpop']), "</td></tr>\n";
+			}
+			else {
+				echo "<tr><th class=\"data left\">{$lang['strmerges']}</th>\n";
+				echo "<td class=\"data1\">", $data->phpBool($oprdata->fields['oprcanmerge']) ? $lang['stryes'] : $lang['strno'], "</td></tr>\n";
+			}
 			echo "</table>\n";
 
 			echo "<p><a class=\"navlink\" href=\"operators.php?{$misc->href}\">{$lang['strshowalloperators']}</a></p>\n";