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| Re: [QVTO] Trying to make logging work [message #480833 is a reply to message #480617] |
Tue, 18 August 2009 15:52   |
Eclipse User |
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Originally posted by: dvorak.radek.gmail.com
Hi Derek,
I suspect that not flushing the PrintWriter, which wraps the System.out
might be the reason.
You can also test with org.eclipse.m2m.qvt.oml.util.StringBufferLog or
provide
whatever custom logger by implementing org.eclipse.m2m.qvt.oml.util.Log.
Regards,
/Radek
On Tue, 18 Aug 2009 00:52:01 +0200, Derek Palma <derek.palma@gmail.com>
wrote:
> Hi,
>
> I am executing QVT transformations from Java and having problems setting
> up logging.
>
> I used the following example transformation:
>
> transformation TestLog();
>
>
> main() {
>
> var s := "foo";
>
> log ("log output: ", s) when true;
>
> }
>
>
> Below is the Java code I use to execute the transformation. I expect to
> see the log messages appear on the console output but nothing is ever
> printed. It makes me wonder if the transformation is ever executed.
> However, the code does take the Diagnostic.OK indicating the execution
> complete without errors. I presume my problem is in the way I am
> invoking the transformation.
>
> Any insight would be appreciated.
>
> Thanks,
> Derek
>
>
> public static List<EObject> transform(URI transformationURI,
> List<EObject> contextList) {
>
>
> TransformationExecutor executor = new
> TransformationExecutor(transformationURI);
>
>
> System.out.println("Input size: " + contextList.size());
>
>
> ModelExtent input = new BasicModelExtent(contextList);
>
> ModelExtent output = new BasicModelExtent();
>
>
> ExecutionContextImpl context = new ExecutionContextImpl();
>
> // context.setConfigProperty("keepModeling", true);
>
> context.setLog(new WriterLog(new PrintWriter(System.out)));
>
>
> ExecutionDiagnostic diagnostic = executor.execute(context/*, input,
> output*/);
>
>
> if(diagnostic.getSeverity() == Diagnostic.OK) {
>
> List<EObject> outputList = output.getContents();
>
> System.out.println("Output size: " + outputList.size());
>
> return outputList;
>
> } else {
>
> IStatus status = BasicDiagnostic.toIStatus(diagnostic);
>
> String message = status.getMessage();
>
> System.out.println("transform failure: " + message);
>
> // InvokeActivator.getDefault().getLog().log(status);
>
> }
>
>
> return null;
>
> }
>
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| Re: [QVTO] Trying to make logging work [message #480912 is a reply to message #480833] |
Tue, 18 August 2009 21:35 |
 Derek Palma
Messages: 141
Registered: July 2009 |
Senior Member |
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Thanks Radek!
Not flushing the PrintWriter was the problem.
Derek
"radek dvorak" <dvorak.radek@gmail.com> wrote in message
news:op.uyu7qc0r12y5f2@kliste.local...
> Hi Derek,
>
> I suspect that not flushing the PrintWriter, which wraps the System.out
> might be the reason.
> You can also test with org.eclipse.m2m.qvt.oml.util.StringBufferLog or
> provide
> whatever custom logger by implementing org.eclipse.m2m.qvt.oml.util.Log.
> Regards,
> /Radek
>
>
> On Tue, 18 Aug 2009 00:52:01 +0200, Derek Palma <derek.palma@gmail.com>
> wrote:
>
>> Hi,
>>
>> I am executing QVT transformations from Java and having problems setting
>> up logging.
>>
>> I used the following example transformation:
>>
>> transformation TestLog();
>>
>>
>> main() {
>>
>> var s := "foo";
>>
>> log ("log output: ", s) when true;
>>
>> }
>>
>>
>> Below is the Java code I use to execute the transformation. I expect to
>> see the log messages appear on the console output but nothing is ever
>> printed. It makes me wonder if the transformation is ever executed.
>> However, the code does take the Diagnostic.OK indicating the execution
>> complete without errors. I presume my problem is in the way I am
>> invoking the transformation.
>>
>> Any insight would be appreciated.
>>
>> Thanks,
>> Derek
>>
>>
>> public static List<EObject> transform(URI transformationURI,
>> List<EObject> contextList) {
>>
>>
>> TransformationExecutor executor = new
>> TransformationExecutor(transformationURI);
>>
>>
>> System.out.println("Input size: " + contextList.size());
>>
>>
>> ModelExtent input = new BasicModelExtent(contextList);
>>
>> ModelExtent output = new BasicModelExtent();
>>
>>
>> ExecutionContextImpl context = new ExecutionContextImpl();
>>
>> // context.setConfigProperty("keepModeling", true);
>>
>> context.setLog(new WriterLog(new PrintWriter(System.out)));
>>
>>
>> ExecutionDiagnostic diagnostic = executor.execute(context/*, input,
>> output*/);
>>
>>
>> if(diagnostic.getSeverity() == Diagnostic.OK) {
>>
>> List<EObject> outputList = output.getContents();
>>
>> System.out.println("Output size: " + outputList.size());
>>
>> return outputList;
>>
>> } else {
>>
>> IStatus status = BasicDiagnostic.toIStatus(diagnostic);
>>
>> String message = status.getMessage();
>>
>> System.out.println("transform failure: " + message);
>>
>> // InvokeActivator.getDefault().getLog().log(status);
>>
>> }
>>
>>
>> return null;
>>
>> }
>>
>
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