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

  On 9/14/2010 1:03 PM, php...@li... wrote:

Darn, I misspoke, see correction below... Marc
>    On 9/12/2010 3:48 AM, php...@li...  wrote:
>> Hi again,
>>
>> insert a
>> 	
>>     instance.getEngine().setContext(new
>> PhpCompiledHttpScriptContext(instance.getEngine().getContext(),this,application,request,response));
>>
>> before calling instance.eval(). Otherwise JSR223 will use the default
>> context, which isn't very usable in a web-context.
> Hi Jost -  Hmmmm  since the method evalPHP, as you sent it to me in your
> previous email, is declared private static final, one cannot use the
> 'this' parameter. Do you see any problem with removing the static final
> from the declaration? That allows this to be called in the context of
> the instance of the servlet that is running. But doing so will then
OOPS! I meant this to say -
> cause the parameters of PhpCompiledHttpScriptContext
> - application, request, and response to be undefined since this code is within the Declaration section of the
> servlet. I think the application parameter can be retrieved via a call
> to this.getServletContext(), but the only way to get the request and
> response parameters will be to pass them in to the evalPHP method.  Do
> you concur? I am thinking the following -
>
> private String evalPHP(String arg, HttpServletRequest request,
> HttpServletResponse response) {
>       CompiledScript instance =
> (CompiledScript)((java.security.cert.CertStoreParameters)script).clone();
>       instance.getEngine().put("script", arg);
>       OutputStream out = new ByteArrayOutputStream();
>       Writer writer = new OutputStreamWriter(out);
>       instance.getEngine().getContext().setWriter(writer);
>       instance.getEngine().setContext((ScriptContext)new
>
> PhpCompiledHttpScriptContext(instance.getEngine().getContext(),this,this.getServletContext(),request,response));
>       try {
>           instance.eval();
>
>       } catch (ScriptException e) {
>           throw new RuntimeException("bleh!");
>       }
>       try {
>            writer.close();
>       } catch (IOException e) {
>           throw new RuntimeException("bleh!");
>       }
>       String result = out.toString();
>      return result;
> }
>
>
> I have gone ahead and tried this, and it almost got me to what I want.
> But one problem remains and I don't grok the code enough to be able to
> solve on my own, so need a bit more guidance. The PHP script that I want
> to embed in the middle of a Javascript section generates a line of
> Javascript that I want the servlet to write back out, at the point where
> the call to evalPHP is made. But when I execute this jsp servlet, the
> generated Javascript from the PHP script is being put out at the very
> beginning of the document. (I was also surprised that the return result
> from evalPHP is null....)
>
>      Thanks again for all your help!   Marc...
>
>
>

  On 9/12/2010 3:48 AM, php...@li...  wrote:
> Hi again,
>
> insert a
> 	
>    instance.getEngine().setContext(new
> PhpCompiledHttpScriptContext(instance.getEngine().getContext(),this,application,request,response));
>
> before calling instance.eval(). Otherwise JSR223 will use the default
> context, which isn't very usable in a web-context.
Hi Jost -  Hmmmm  since the method evalPHP, as you sent it to me in your 
previous email, is declared private static final, one cannot use the 
'this' parameter. Do you see any problem with removing the static final 
from the declaration? That allows this to be called in the context of 
the instance of the servlet that is running. But doing so will then 
cause the parameters of evalPHP - application, request, and response to 
be undefined since this code is within the Declaration section of the 
servlet. I think the application parameter can be retrieved via a call 
to this.getServletContext(), but the only way to get the request and 
response parameters will be to pass them in to the evalPHP method.  Do 
you concur? I am thinking the following -

private String evalPHP(String arg, HttpServletRequest request, 
HttpServletResponse response) {
     CompiledScript instance =
(CompiledScript)((java.security.cert.CertStoreParameters)script).clone();
     instance.getEngine().put("script", arg);
     OutputStream out = new ByteArrayOutputStream();
     Writer writer = new OutputStreamWriter(out);
     instance.getEngine().getContext().setWriter(writer);
     instance.getEngine().setContext((ScriptContext)new
             
PhpCompiledHttpScriptContext(instance.getEngine().getContext(),this,this.getServletContext(),request,response));
     try {
         instance.eval();

     } catch (ScriptException e) {
         throw new RuntimeException("bleh!");
     }
     try {
          writer.close();
     } catch (IOException e) {
         throw new RuntimeException("bleh!");
     }
     String result = out.toString();
    return result;
}


I have gone ahead and tried this, and it almost got me to what I want. 
But one problem remains and I don't grok the code enough to be able to 
solve on my own, so need a bit more guidance. The PHP script that I want 
to embed in the middle of a Javascript section generates a line of 
Javascript that I want the servlet to write back out, at the point where 
the call to evalPHP is made. But when I execute this jsp servlet, the 
generated Javascript from the PHP script is being put out at the very 
beginning of the document. (I was also surprised that the return result 
from evalPHP is null....)

    Thanks again for all your help!   Marc...