Can't get property, but it does work through the emf reflective api #179

micfort · 2025-04-23T12:33:22Z

micfort
Apr 23, 2025

So I don't think i really can share a simple example that shows the error, but I have a strange error happening.
I can't get the property name from an object of a type AttributeDecl. The type does have that property declared in the ecore metamodel.
I can however try to get the property through the reflective emf api:

for(a in decl.eClass().getEAllAttributes()) {
	(a.name + ": " + decl.eGet(a)).println();
}

I also get an error where the exception is thrown at org.eclipse.epsilon.eol.execute.introspection.java.JavaPropertyGetter.invoke(JavaPropertyGetter.java:60) (full stack strace is below), which lets me suspect that I'm calling inside a model that is not loaded with the emf EMC but with the Java EMC. I get this object from what I think is a EMF object. (is this possible to check?) I do get this object through a reference.
I do have also a model from a pattern matching language which i think should be an java EMC model.
Does anyone has any idea how to solve this or how I can figure out what is happening?

The full stack trace that shows the error with some names blanked out:

[epsilon.flock - Analyze.mig] EXCEPTION: Property 'name' not found in object org.eclipse.emf.ecore.impl.DynamicEObjectImpl@54be6213 (eClass: org.eclipse.emf.ecore.impl.EClassImpl@4e245739 (name: AttributeDecl) (instanceClassName: null) (abstract: false, interface: false))
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:16)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:56-50:7)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:6-50:7)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:49-54:6)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:5-54:6)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@12:6-56:5)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@9:4-56:5)
[epsilon.flock - Analyze.mig] 	at (unknown@0:0-0:0)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@1:0-71:1)
[epsilon.flock - Analyze.mig] 
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:16)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:56-50:7)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:6-50:7)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:49-54:6)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:5-54:6)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@12:6-56:5)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@9:4-56:5)
[epsilon.flock - Analyze.mig] 	at (unknown@0:0-0:0)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@1:0-71:1)
[epsilon.flock - Analyze.mig] 
[epsilon.flock - Analyze.mig] Property 'name' not found in object org.eclipse.emf.ecore.impl.DynamicEObjectImpl@54be6213 (eClass: org.eclipse.emf.ecore.impl.EClassImpl@4e245739 (name: AttributeDecl) (instanceClassName: null) (abstract: false, interface: false))
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:16)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:56-50:7)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:6-50:7)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:49-54:6)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:5-54:6)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@12:6-56:5)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@9:4-56:5)
[epsilon.flock - Analyze.mig] 	at (unknown@0:0-0:0)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@1:0-71:1)
[epsilon.flock - Analyze.mig] 
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.execute.FlockExecution.run(FlockExecution.java:38)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.execute.context.FlockContext.execute(FlockContext.java:97)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.FlockModule.processRules(FlockModule.java:135)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.FlockModule.processRules(FlockModule.java:1)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.erl.ErlModule.executeImpl(ErlModule.java:174)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:207)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.EolModule.execute(EolModule.java:476)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.FlockModule.execute(FlockModule.java:120)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.FlockModule.execute(FlockModule.java:1)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.workflow.tasks.ExecutableModuleTask.executeImpl(ExecutableModuleTask.java:265)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.workflow.tasks.EpsilonTask.execute(EpsilonTask.java:42)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:299)
[epsilon.flock - Analyze.mig] 	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
[epsilon.flock - Analyze.mig] 	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:99)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Task.perform(Task.java:350)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Target.execute(Target.java:449)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Target.performTasks(Target.java:470)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1401)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:36)
[epsilon.flock - Analyze.mig] 	at org.eclipse.ant.internal.launching.remote.EclipseSingleCheckExecutor.executeTargets(EclipseSingleCheckExecutor.java:31)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Project.executeTargets(Project.java:1264)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:437)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:106)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:299)
[epsilon.flock - Analyze.mig] 	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
[epsilon.flock - Analyze.mig] 	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:99)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Task.perform(Task.java:350)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.workflow.tasks.ForTask.executeImpl(ForTask.java:64)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.workflow.tasks.EpsilonTask.execute(EpsilonTask.java:42)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:299)
[epsilon.flock - Analyze.mig] 	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
[epsilon.flock - Analyze.mig] 	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:99)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Task.perform(Task.java:350)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Target.execute(Target.java:449)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Target.performTasks(Target.java:470)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1401)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Project.executeTarget(Project.java:1374)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[epsilon.flock - Analyze.mig] 	at org.eclipse.ant.internal.launching.remote.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:33)
[epsilon.flock - Analyze.mig] 	at org.apache.tools.ant.Project.executeTargets(Project.java:1264)
[epsilon.flock - Analyze.mig] 	at org.eclipse.ant.internal.launching.remote.InternalAntRunner.run(InternalAntRunner.java:474)
[epsilon.flock - Analyze.mig] 	at org.eclipse.ant.internal.launching.remote.InternalAntRunner.main(InternalAntRunner.java:153)
[epsilon.flock - Analyze.mig] Caused by: Property 'name' not found in object org.eclipse.emf.ecore.impl.DynamicEObjectImpl@54be6213 (eClass: org.eclipse.emf.ecore.impl.EClassImpl@4e245739 (name: AttributeDecl) (instanceClassName: null) (abstract: false, interface: false))
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:16)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:56-50:7)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:6-50:7)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:49-54:6)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:5-54:6)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@12:6-56:5)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@9:4-56:5)
[epsilon.flock - Analyze.mig] 	at (unknown@0:0-0:0)
[epsilon.flock - Analyze.mig] 	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@1:0-71:1)
[epsilon.flock - Analyze.mig] 
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.introspection.java.JavaPropertyGetter.invoke(JavaPropertyGetter.java:60)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.PropertyCallExpression.execute(PropertyCallExpression.java:69)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.PropertyCallExpression.execute(PropertyCallExpression.java:40)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:204)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.OperationCallExpression.execute(OperationCallExpression.java:90)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:204)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.ExpressionStatement.execute(ExpressionStatement.java:31)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:204)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.StatementBlock.execute(StatementBlock.java:68)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:204)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.IfStatement.execute(IfStatement.java:56)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:204)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.StatementBlock.execute(StatementBlock.java:68)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:204)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.ForStatement.execute(ForStatement.java:95)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:204)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.StatementBlock.execute(StatementBlock.java:68)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:204)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.IfStatement.execute(IfStatement.java:59)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:204)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.StatementBlock.execute(StatementBlock.java:68)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeImpl(ExecutorFactory.java:204)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.execute.ExecutorFactory.execute(ExecutorFactory.java:233)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.ExecutableBlock.executeBlockOrExpressionAst(ExecutableBlock.java:103)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.ExecutableBlock.executeBody(ExecutableBlock.java:177)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.ExecutableBlock.execute(ExecutableBlock.java:128)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.ExecutableBlock.execute(ExecutableBlock.java:181)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.eol.dom.ExecutableBlock.execute(ExecutableBlock.java:92)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.context.MigrateRuleContext.execute(MigrateRuleContext.java:55)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.model.domain.rules.MigrateRule.applyTo(MigrateRule.java:70)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.model.domain.rules.MigrateRules.applyTo(MigrateRules.java:48)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.model.domain.MigrationStrategy.applyRulesTo(MigrationStrategy.java:87)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.equivalences.Equivalences.applyRules(Equivalences.java:63)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.execute.MigrationStrategyRunner.applyRules(MigrationStrategyRunner.java:53)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.execute.MigrationStrategyRunner.run(MigrationStrategyRunner.java:37)
[epsilon.flock - Analyze.mig] 	at org.eclipse.epsilon.flock.execute.FlockExecution.run(FlockExecution.java:36)
[epsilon.flock - Analyze.mig] 	... 45 more

BUILD FAILED
C:\****\git\****\Generators\ClientArmoring\build.xml:47: The following error occurred while executing this line:
C:\****\git\****\Generators\ClientArmoring\build.xml:102: Property 'name' not found in object org.eclipse.emf.ecore.impl.DynamicEObjectImpl@54be6213 (eClass: org.eclipse.emf.ecore.impl.EClassImpl@4e245739 (name: AttributeDecl) (instanceClassName: null) (abstract: false, interface: false))
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:16)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:56-50:7)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:6-50:7)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:49-54:6)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:5-54:6)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@12:6-56:5)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@9:4-56:5)
	at (unknown@0:0-0:0)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@1:0-71:1)

	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:16)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:56-50:7)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:6-50:7)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:49-54:6)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:5-54:6)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@12:6-56:5)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@9:4-56:5)
	at (unknown@0:0-0:0)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@1:0-71:1)

Property 'name' not found in object org.eclipse.emf.ecore.impl.DynamicEObjectImpl@54be6213 (eClass: org.eclipse.emf.ecore.impl.EClassImpl@4e245739 (name: AttributeDecl) (instanceClassName: null) (abstract: false, interface: false))
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:16)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@49:7-49:27)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:56-50:7)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@40:6-50:7)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:49-54:6)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@26:5-54:6)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@12:6-56:5)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@9:4-56:5)
	at (unknown@0:0-0:0)
	at (C:\****\git\****\Generators\ClientArmoring\Armor\Analyze.mig@1:0-71:1)

Answered by kolovos

Apr 24, 2025

Flock's default migration strategy only supports single-file models. To use Flock to migrate multi-file models, please see this example.

View full answer

kolovos · 2025-04-23T14:19:12Z

kolovos
Apr 23, 2025
Maintainer

Could you please check what owns and knowsAboutProperty return for this object as shown here?

0 replies

micfort · 2025-04-23T14:51:52Z

micfort
Apr 23, 2025
Author

I tried that. It is a flock step, with a model(called Model), analyzed model(called AnalyzedModel) and a set of patterns that come from a pattern matching step (called Patterns). So I ran the following code:

Model.owns(argument).println("Model owns argument: ");
Model.owns(argument.attributes.first()).println("Model owns attributes: ");
Model.owns(argument.attributes.first().attribute).println("Model owns attribute: ");

var decl = argument.attributes.first().attribute.decl; //decl here is a non-containment reference.

Model.owns(decl).println("Model owns decl: ");
Model.knowsAboutProperty(decl, "name").println("Model knows decl's name?: ");
Model.propertyGetter.invoke(decl, "name").println("decl's name: ");

AnalyzedModel.owns(decl).println("AnalyzedModel owns decl: ");
AnalyzedModel.knowsAboutProperty(decl, "name").println("AnalyzedModel knows decl's name?: ");
AnalyzedModel.propertyGetter.invoke(decl, "name").println("decl's name: ");

Patterns.owns(decl).println("Patterns owns decl: ");
Patterns.knowsAboutProperty(decl, "name").println("Patterns knows decl's name?: ");
Patterns.propertyGetter.invoke(decl, "name").println("decl's name: ");

and it outputs the following:

[epsilon.flock - Analyze.mig] Model owns argument: true
[epsilon.flock - Analyze.mig] Model owns attributes: true
[epsilon.flock - Analyze.mig] Model owns attribute: true
[epsilon.flock - Analyze.mig] Model owns decl: false
[epsilon.flock - Analyze.mig] Model knows decl's name?: false
[epsilon.flock - Analyze.mig] decl's name: Timeout
[epsilon.flock - Analyze.mig] AnalyzedModel owns decl: false
[epsilon.flock - Analyze.mig] AnalyzedModel knows decl's name?: false
[epsilon.flock - Analyze.mig] decl's name: Timeout
[epsilon.flock - Analyze.mig] Patterns owns decl: false
[epsilon.flock - Analyze.mig] Patterns knows decl's name?: false
[epsilon.flock - Analyze.mig] EXCEPTION: Cannot invoke "org.eclipse.epsilon.eol.execute.context.IEolContext.getOperationContributorRegistry()" because "context" is null

The last exception is probably because it doesn't own it.

The original objects are all owned by Model, when i dereference it, it does not own it anymore. The decl is a non-containment reference and references and element in another emf model. Expand is set to true in the epsilon.emf.loadModel Ant task.

0 replies

kolovos · 2025-04-24T12:33:09Z

kolovos
Apr 24, 2025
Maintainer

Flock's default migration strategy only supports single-file models. To use Flock to migrate multi-file models, please see this example.

0 replies

micfort · 2025-04-24T12:48:38Z

micfort
Apr 24, 2025
Author

So this seems to be a problem with Flock.

The example you gave is a java only solution and is not available from Apache ant.
We are currently working only from Apache ANT and epsilon. To also pull in Java and create compilation step would increase the complexity of a number of things.
Because of deadlines and such, we will probably change it to an EOL module, where we copy everything and then do the changes as neccesary.

Anyway, thank you for responding.

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