| [qvtd-dev] [Dev] Pivot model and generated opposite relations |
Hi Ed,
Doing more work in the QVTimperativeTracingEvaluationVisitor class I have been getting an exception when using the opposite relations auto generated by the Pivot model.
In line 390 of UML2RDBMS.qvti I use p2n := t.PrimitiveToName; to get a reference to the trace model class used to trace the PrimitiveDataType t. While executing I get:
org.eclipse.ocl.examples.domain.values.impl.InvalidValueException: Failed to evaluate simpleuml::PrimitiveDataType.PrimitiveToName at org.eclipse.ocl.examples.pivot.evaluation.EvaluationVisitorImpl.visitPropertyCallExp(EvaluationVisitorImpl.java:786) at org.eclipse.ocl.examples.pivot.evaluation.AbstractEvaluationVisitorDecorator.visitPropertyCallExp(AbstractEvaluationVisitorDecorator.java:255) at org.eclipse.ocl.examples.pivot.internal.impl.PropertyCallExpImpl.accept(PropertyCallExpImpl.java:391) at org.eclipse.ocl.examples.pivot.evaluation.EvaluationVisitorImpl.safeVisit(EvaluationVisitorImpl.java:171) at uk.ac.york.qvtd.pivot.qvtimperative.evaluation.QVTimperativeTracingEvaluationVisitor.visitVariableAssignment(QVTimperativeTracingEvaluationVisitor.java:180) at org.eclipse.qvtd.pivot.qvtcorebase.impl.VariableAssignmentImpl.accept(VariableAssignmentImpl.java:173) at uk.ac.york.qvtd.pivot.qvtimperative.evaluation.QVTimperativeLMEvaluationVisitor.visitBottomPattern(QVTimperativeLMEvaluationVisitor.java:103) at uk.ac.york.qvtd.pivot.qvtimperative.evaluation.QVTimperativeTracingEvaluationVisitor.visitBottomPattern(QVTimperativeTracingEvaluationVisitor.java:63)
I added print statements to check that the t variable is not null. Since the QVTi editor does not complaint about the reference I am guessing something is not working in my code, probably the PrimitiveToName element is not being properly assigned the primitive association value.
My question is, can you recommend a smart way of printing the Variable values to get useful information? Perhaps a printer that prints the variable name and the value of all its attributes?
Regards,
Horacio Hoyos Rodríguez EngD Student University of York
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