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Home » Modeling » M2T (model-to-text transformation) » MWE: EvaluationException in CheckComponent: Type not found
MWE: EvaluationException in CheckComponent: Type not found [message #518752] Thu, 04 March 2010 22:05 Go to next message
Maxim Frolov is currently offline Maxim FrolovFriend
Messages: 20
Registered: March 2010
Location: Aachen
Junior Member
Hello,

I created a simple Ecore-based metamodel.

Then I created a simple model from it.

Now I'm trying to implement a simple workflow which just checks the model.

Running the workflow results in EvaluationException in CheckComponent:

Here is my simple Ecore-based metamodel stored in data.ecore file:
<?xml version="1.0" encoding="UTF-8"?>
<ecore:EPackage xmi:version="2.0"
    xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" name="data"
    nsURI="http://www.soptim.de/datamodel" nsPrefix="data">
  <eClassifiers xsi:type="ecore:EClass" name="DataModel">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="entity" upperBound="-1"
        eType="#//Entity" containment="true"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Entity">
    <eAnnotations source="http://www.eclipse.org/emf/2002/GenModel">
      <details key="documentation" value="Something that has a distinct, separate existence."/>
    </eAnnotations>
	<eAnnotations source="http://www.eclipse.org/2007/OCL">
	  <details key="derive" value="let topics : Set(mindmap::Topic) = self.elements->select(oclIsKindOf(mindmap::Topic))->collect(oclAsType(mindmap::Topic))->asSet() in topics->symmetricDifference(topics.subtopics->
asSet())"/>
</eAnnotations>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="attribute" lowerBound="1"
        upperBound="-1" eType="#//Attribute" containment="true"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="reference" upperBound="-1"
        eType="#//EntityReference" containment="true"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Attribute">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="type" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="EntityReference">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="toMany" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EBoolean"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="target" lowerBound="1"
        eType="#//Entity"/>
  </eClassifiers>
</ecore:EPackage>


Here is the model stored in booklib.data file:
<?xml version="1.0" encoding="UTF-8"?>
<data:DataModel xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:data="http://www.soptim.de/datamodel">
  <entity name="Author">
    <attribute name="firstName" type="String"/>
    <attribute name="secondName" type="String"/>
  </entity>
  <entity name="Book">
    <attribute name="title" type="String"/>
    <reference name="authors" toMany="true" target="//@entity.0"/>
  </entity>
</data:DataModel>


Here is the Check file stored in file booklib.chk:
import data;
context Entity ERROR
  "Names have to be more than 3 characters long." :
  name.length > 3;


And here is the workflow stored in file workflow.mwe:
<workflow>
  <property file="workflow.properties"/>

  <component id="xmiParser" class="org.eclipse.xtend.typesystem.emf.XmiReader">
    <modelFile value="${modelFile}"/>
    <metaModelPackage value="data.DataPackage"/>
    <outputSlot value="model"/>
    <firstElementOnly value="true"/>
  </component>

	<component class="org.eclipse.xtend.check.CheckComponent">
		<metaModel id="model" class="org.eclipse.xtend.typesystem.emf.EmfMetaModel"/>
		<checkFile value="booklib" /> <!-- Without .chk extension -->
		<emfAllChildrenSlot value="model" />
	</component>  
</workflow>


The workflow.properties file contains:
modelFile=booklib.data
srcGenPath=src-gen
fileEncoding=ISO-8859-1


Here is the output of the workflow:
04.03.2010 22:58:12 org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO: --------------------------------------------------------------------------------------
04.03.2010 22:58:12 org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO: EMF Modeling Workflow Engine 0.7.2, Build v200908120417
04.03.2010 22:58:12 org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO: (c) 2005-2009 openarchitectureware.org and contributors
04.03.2010 22:58:12 org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO: --------------------------------------------------------------------------------------
04.03.2010 22:58:12 org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO: running workflow: D:/eclipse-modeling-workspace/de.soptim.datamodel.generator/src/workflow.mwe
04.03.2010 22:58:12 org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO: 
04.03.2010 22:58:13 org.eclipse.emf.mwe.core.container.CompositeComponent internalInvoke
INFO: XmiReader(xmiParser): file 'booklib.data' => slot 'model'
04.03.2010 22:58:13 org.eclipse.emf.mwe.core.container.CompositeComponent internalInvoke
INFO: CheckComponent: slot model check file(s): booklib 
04.03.2010 22:58:13 org.eclipse.xtend.expression.AbstractExpressionsUsingWorkflowComponent invokeInternal
SCHWERWIEGEND: Error in Component  of type org.eclipse.xtend.check.CheckComponent: 
	EvaluationException : Type not found : Entity
	booklib.chk[249,94] on line 9 'Entity "Names have to be more than 10 characters long."'

04.03.2010 22:58:13 org.eclipse.emf.mwe.core.WorkflowRunner executeWorkflow
SCHWERWIEGEND: Workflow interrupted. Reason: Type not found : Entity



I assume, there are some issues with importing of the metamodel or visibility of the metamodel within workflow.

Please, give me a hint.
Re: MWE: EvaluationException in CheckComponent: Type not found [message #518766 is a reply to message #518752] Thu, 04 March 2010 23:01 Go to previous message
Maxim Frolov is currently offline Maxim FrolovFriend
Messages: 20
Registered: March 2010
Location: Aachen
Junior Member
I have just changed the workflow file and it works now!

<workflow>
  <property file="workflow.properties"/>

	<!-- Metamodel-Definition -->
	<bean id="mm" class="org.eclipse.xtend.typesystem.emf.EmfMetaModel">
		<metaModelPackage value="data.DataPackage"/>
	</bean>

  <component id="xmiParser" class="org.eclipse.xtend.typesystem.emf.XmiReader">
    <modelFile value="${modelFile}"/>
    <metaModelPackage value="data.DataPackage"/>
    <outputSlot value="mm"/>
    <firstElementOnly value="true"/>
  </component>

	<!-- check model -->
	<component class="org.eclipse.xtend.check.CheckComponent">
		<metaModel idRef="mm"/>
		<checkFile value="booklib" /> <!-- Without .chk extension -->
		<expression value="mm.eAllContents" />
	</component>
</workflow>


I changed the <metaModel> definition and replaced <emfAllChildrenSlot> by <expression> in the <component class=org.eclipse.xtend.check.CheckComponent>.
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