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[Texo] Map is not a known entity type [message #1005122]

Thu, 24 January 2013 14:13

Bastian Wagenfeld

Messages: 183
Registered: January 2013

Senior Member

Hi,

I created an EMF based editor that uses TexoResources. Loading the resources via a texo servlet works, saving the resources after they were edited works, too, except for a map. If I try to persist this map the server throws an IllegalArgumentException and says, this is not a known entity type. Here the complete exception:

java.lang.IllegalArgumentException: Object: SubjectProperty{key: warumvalue: dreck} is not a known entity type.
	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4158)
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:440)
	at org.eclipse.emf.texo.server.store.BaseDao.insert(BaseDao.java:204)
	at org.eclipse.emf.texo.server.store.EntityManagerObjectStore.insert(EntityManagerObjectStore.java:146)
	at org.eclipse.emf.texo.server.service.UpdateInsertModelOperation.internalExecute(UpdateInsertModelOperation.java:85)
	at org.eclipse.emf.texo.server.service.ModelOperation.execute(ModelOperation.java:59)
	at org.eclipse.emf.texo.server.web.WebServiceHandler.doPost(WebServiceHandler.java:111)
	at org.eclipse.emf.texo.server.web.WebServiceServlet.doPost(WebServiceServlet.java:65)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:722)

Loading this map and showing it in the editor is no problem, persisting it with the Eclipselink entity manager isn't as well. That is why I assume it is not a problem with the orm.xml or the annotations.
The following xml includes the class "SubjectProperty" represented in the ecore model.

<eClassifiers xsi:type="ecore:EClass" name="SubjectProperty" instanceClassName="java.util.Map$Entry"
      eSuperTypes="identifiable.ecore#//Identifiable">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="key" lowerBound="1" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString">
      <eAnnotations source="org.eclipse.emf.texo">
        <details key="java.member" value="key"/>
      </eAnnotations>
    </eStructuralFeatures>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="value" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString">
      <eAnnotations source="org.eclipse.emf.texo">
        <details key="java.member" value="value"/>
      </eAnnotations>
    </eStructuralFeatures>
  </eClassifiers>

The orm.xml file contains the following "User" entity that holds the "SubjectProperty":

<orm:entity class="de.test.users.User" name="users_User">
    <orm:table name="users_User"/>
    <orm:attributes>
      <orm:basic name="name" optional="false">
        <orm:column name="name"/>
      </orm:basic>
      <orm:many-to-one name="role" optional="false">
        <orm:join-column name="users_User_role"/>
        <orm:cascade>
          <orm:cascade-persist/>
          <orm:cascade-merge/>
          <orm:cascade-refresh/>
        </orm:cascade>
      </orm:many-to-one>
      <orm:one-to-many name="grants">
        <orm:join-column name="users_User_grants"/>
        <orm:cascade>
          <orm:cascade-all/>
        </orm:cascade>
      </orm:one-to-many>
      <orm:element-collection name="properties">
        <orm:collection-table name="users_User_properties"/>
        <orm:cascade-on-delete>true</orm:cascade-on-delete>
      </orm:element-collection>
    </orm:attributes>
  </orm:entity>

The JSON string sent to the server looks like that:

{ "_eclass" : "request|ActionType",
  "_title" : "Testuser Server",
  "delete" : [  ],
  "insert" : [ { "_eclass" : "users|SubjectProperty",
        "_title" : "warum",
        "_uri" : "http://localhost:8080/de.test.texo.servlet/jsonws/users|SubjectProperty/1359031110842?tempUriNum=1#",
        "key" : "warum",
        "value" : "nicht"
      } ],
  "update" : [ { "_eclass" : "users|User",
        "_id" : "16003",
        "_title" : "Testuser Server",
        "_uri" : "http://localhost:8080/de.test.texo.servlet/jsonws/users|User/16003#",
        "db_Id" : 16003,
        "db_version" : 1,
        "grants" : [  ],
        "name" : "Testuser Server",
        "properties" : [ { "key" : "warum",
              "value" : "nicht"
            } ],
        "role" : { "_eclass" : "users|Role",
            "_id" : "16004",
            "_proxy" : true,
            "_title" : "Default",
            "_uri" : "http://localhost:8080/de.test.texo.servlet/jsonws/users|Role/16004#",
            "db_Id" : 16004
          }
      } ]
}

I updated my servlet jar files to the latest version from the plugins folder of eclipse. I also read the following Bugzilla entry which seems to be similar: https://bugs.eclipse.org/bugs/show_bug.cgi?id=391624

I hope, anybody has an idea, how I could solve this problem.

Best regards
Bastian

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