php-java-bridge-users Mailing List for PHP/Java Bridge

Hi,


> I want to wrap two PHP objects as closures, pass them to Java, and in
> Java call a method on the first closure with the second closure as
> parameter [argument]

In pseudo code (please see the JSR 223 API for details):

String pA = "class A{function testA($b){echo $b->testB();}}\n"
String pB = "class B{function testB(){echo 'hello world';}}\n"
String test = "<?php "+pA+Pb+" $thiz=java_context()->getAttribute("thiz"); $thiz->call(java_closure(new A()), java_closure(new B()); ?>
 

public void doWork (){
  scriptEngine = new ScriptEngineManager().getEngineByName("php-invocable");
  scriptEngine.put("thiz", this);
  scriptEngine.eval(test);
  ((Closeable)scriptEngine).close();
}
static interface IA { public void testA(IB cc1); }
static interface IB { public void testB(); }
public void call(Object $ccA, Object $ccB) {
  IA ccA = scriptEngine.getInterface($ccA, IA);
  IB ccB = scriptEngine.getInterface($ccB, IB);
  ccA.testA(ccB);
}
 
> The problem is that on the php side I get a new object of
> type PhpProcedure instead of the closure/proxy I created before.

Yes, the type is determined lazily. Why is that a problem?


> Therefore within the method I always get the wrong
> parameter passed in.

I think this is a misunderstanding. If you don't specify the type, either via getInterface() (see above) or by calling java_closure() with three arguments, the generated procedure is generic, i.e. you cannot call the procedure "testA" on it.


Regards,
Jost Boekemeier



      

I think found what was causing my confusion.  On the SQL Server the field 
that I thought was a double is actually defined as a Money type.  If I 
understand it correctly, the Money type is a long integer that has to be 
scaled based on the definition.

Thanks for your reply.  I suspected that PHP only really used strings, but 
wasn't sure.  Also, I had forgotten about the java_values command.  I have 
used it before, but it has been some time.

Thanks Jost.

Charles Shaffer
Senior Analyst
NTN-Bower Corporation




php...@li...
01/03/2009 11:00 AM
Please respond to php-java-bridge-users

 
        To:     php...@li...
        cc: 
        Subject:        Re: [Php-java-bridge-users] Type Casting


Hi,

can you please give an example which demonstrates the problem?


> Should PHP handle everyting as a string and type casting be
> done in Java? 

That's the only type that PHP supports, anyway. :)


> For example I have a Sql query being called from Java.  PHP
> passes a 
> string and an int to the Java routine and the Java routine
> runs the SQL query and returns a double. 

The bridge will return a proxy for the result, which can be evaluated as 
usual:

  either 
    echo (int)(string)$sqlResult; 
  or
    echo java_values($sqlResult);

Note that the first line above might be wrong on 32 bit machines, where 
PHP int values have a limited range. Use (double)(string)$sqlResult 
instead.


Regards,
Jost Boekemeier


 

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Hi all,

I want to wrap two PHP objects as closures, pass them to Java, and in
Java call a method on the first closure with the second closure as
parameter.
I believe that there's no simple java_closure()-call to do this at once.
Therefore I wrote a Java-class that takes over the two closures and
tries to do what I desribed above.
See attachment for my PHP and Java code look.

The problem is that on the php side I get a new object of type
PhpProcedure instead of the closure/proxy I created before.
Therefore within the method I always get the wrong parameter passed in.
If I omit the line where I replace Proxy by underlying PhpProcedure in
my java code, I get an (dollar)Proxy0-object instead of the PhpProcedure
- which is still wrong.
What I probably would need to get is the PhpProcedureProxy, but I've got
no glue how to get a handle on that on the java side.

I'm quite new to PHP-Java-Bridge, so I don't know whether this is a
missing feature or I'm missing some basic understanding.

Regards Juergen