[OJB-developers] Problems with proxyReference: Field type mismatch

[<ubu...@ya...>]

Hello everybody out there in happy-ojb-country ;)

I switched my project to the latetest release 0.8.735 und i like it a lot,
especially the new collectionProxy feature.

However, i found a problem with
proxyReference("java.lang.IllegalArgumentException: field type mismatch"),
which i was able to reproduce with a new Test in ProxyExample.java.

I was not able to solve the problem, but i collected some information
which
is hopefully useful for you.

1.) detailed error message
2.) new test in RandomProxy
3.) definitions from repository_junit.xml
4.) ArticleWProxyReference.java (attached)
5.) ProductGroupWProxyReference (attached)

maybe somebody could help me...

cu

Uli

1.) detailed error message
    [junit] ...[DEFAULT] ERROR: field type mismatch
    [junit] java.lang.IllegalArgumentException: field type mismatch
    [junit]     at java.lang.reflect.Field.set(Native Method)
    [junit]     at
ojb.broker.metadata.PersistentFieldDefaultImpl.set(PersistentFieldDefaultImpl.java:114)
    [junit]     at
ojb.broker.singlevm.PersistenceBrokerImpl.retrieveReference(PersistenceBrokerImpl.java:539)
    [junit]     at
ojb.broker.singlevm.PersistenceBrokerImpl.retrieveReferences(PersistenceBrokerImpl.java:510)
    [junit]     at
ojb.broker.singlevm.PersistenceBrokerImpl.getDBObject(PersistenceBrokerImpl.java:1100)
    [junit]     at
ojb.broker.singlevm.PersistenceBrokerImpl.getObjectByIdentity(PersistenceBrokerImpl.java:1181)
    [junit]     at
test.ojb.broker.ProxyExamples.testReferenceProxies(ProxyExamples.java:295)
    [junit]     at java.lang.reflect.Method.invoke(Native Method)
    [junit]     at junit.framework.TestCase.runTest(TestCase.java:166)
    [junit]     at junit.framework.TestCase.runBare(TestCase.java:140)
    [junit]     at
junit.framework.TestResult$1.protect(TestResult.java:106)
    [junit]     at
junit.framework.TestResult.runProtected(TestResult.java:124)
    [junit]     at junit.framework.TestResult.run(TestResult.java:109)
    [junit]     at junit.framework.TestCase.run(TestCase.java:131)
    [junit]     at junit.framework.TestSuite.runTest(TestSuite.java:173)
    [junit]     at junit.framework.TestSuite.run(TestSuite.java:168)
    [junit]     at junit.framework.TestSuite.runTest(TestSuite.java:173)
    [junit] [DEFAULT] ERROR: field: productGroup, type: interface
test.ojb.broker.InterfaceProductGroup
    [junit] [DEFAULT] ERROR: value: ----
    [junit] group Id:    1
    [junit] name:        Beverages
    [junit] description: Alles leckere zum S³ffeln
    [junit] articles in group: null, type: class $Proxy0
    [junit]     at junit.framework.TestSuite.run(TestSuite.java:168)
    [junit]     at junit.textui.TestRunner.doRun(TestRunner.java:74)
    [junit]     at junit.textui.TestRunner.start(TestRunner.java:234)
    [junit] [ojb.broker.singlevm.PersistenceBrokerImpl] ERROR: expected
type: interface test.ojb.broker.InterfaceProduct
Group
        [junit] [ojb.broker.singlevm.PersistenceBrokerImpl] ERROR: actual
type:   class $Proxy0

2.) new test in RandomProxy
	public void testReferenceProxies()
	{
		try
		{
			Object[] pkvals = new Object[1];
			pkvals[0] = new Integer(2);
			Identity id = new Identity( ArticleWProxyReference.class, pkvals);
			
			ArticleWProxyReference awpr =
(ArticleWProxyReference)broker.getObjectByIdentity(id);
			assertNotNull( "awpr is null", awpr);
			assertEquals( "awpr.pgid", 1, awpr.getProductGroupId());
			
			InterfaceProductGroup pg = awpr.getProductGroup();
			assertNotNull( "ProductGroup is null", pg);
		}
		catch (Throwable t)
		{
			t.printStackTrace();
			fail(t.getMessage());
		}
	}

3.) definitions from repository_junit.xml

<!-- Definitions for test.ojb.broker.Article -->
   <ClassDescriptor id="142">
      <class.name>test.ojb.broker.ArticleWProxyReference</class.name>
      <table.name>Artikel</table.name>
      <FieldDescriptor id="1">
         <field.name>articleId</field.name>
         <column.name>Artikel_Nr</column.name>
         <jdbc_type>INTEGER</jdbc_type>
         <PrimaryKey>true</PrimaryKey>
         <autoincrement>true</autoincrement>
      </FieldDescriptor>
      <FieldDescriptor id="2">
         <field.name>articleName</field.name>
         <column.name>Artikelname</column.name>
         <jdbc_type>VARCHAR</jdbc_type>
      </FieldDescriptor>
      <FieldDescriptor id="3">
         <field.name>supplierId</field.name>
         <column.name>Lieferanten_Nr</column.name>
         <jdbc_type>INTEGER</jdbc_type>
      </FieldDescriptor>
      <FieldDescriptor id="4">
         <field.name>productGroupId</field.name>
         <column.name>Kategorie_Nr</column.name>
         <jdbc_type>INTEGER</jdbc_type>
      </FieldDescriptor>
      <FieldDescriptor id="5">
         <field.name>unit</field.name>
         <column.name>Liefereinheit</column.name>
         <jdbc_type>VARCHAR</jdbc_type>
      </FieldDescriptor>
      <FieldDescriptor id="6">
         <field.name>price</field.name>
         <column.name>Einzelpreis</column.name>
         <jdbc_type>FLOAT</jdbc_type>
      </FieldDescriptor>
      <FieldDescriptor id="7">
         <field.name>stock</field.name>
         <column.name>Lagerbestand</column.name>
         <jdbc_type>INTEGER</jdbc_type>
      </FieldDescriptor>
      <FieldDescriptor id="8">
         <field.name>orderedUnits</field.name>
         <column.name>BestellteEinheiten</column.name>
         <jdbc_type>INTEGER</jdbc_type>
      </FieldDescriptor>
      <FieldDescriptor id="9">
         <field.name>minimumStock</field.name>
         <column.name>MindestBestand</column.name>
         <jdbc_type>INTEGER</jdbc_type>
      </FieldDescriptor>
      <ReferenceDescriptor id="1">
         <proxyReference>true</proxyReference>
         <rdfield.name>productGroup</rdfield.name>
        
<referenced.class>test.ojb.broker.ProductGroupWProxyReference</referenced.class>
         <fk_descriptor_ids>4</fk_descriptor_ids>
      </ReferenceDescriptor>
   </ClassDescriptor>

<!-- Definitions for test.ojb.broker.ProductGroupWProxyReference -->
   <ClassDescriptor id="143">
      <class.name>test.ojb.broker.ProductGroupWProxyReference</class.name>
      <table.name>Kategorien</table.name>
      <FieldDescriptor id="1">
         <field.name>groupId</field.name>
         <column.name>Kategorie_Nr</column.name>
         <jdbc_type>INTEGER</jdbc_type>
         <PrimaryKey>true</PrimaryKey>
         <autoincrement>true</autoincrement>
      </FieldDescriptor>
      <FieldDescriptor id="2">
         <field.name>groupName</field.name>
         <column.name>KategorieName</column.name>
         <jdbc_type>VARCHAR</jdbc_type>
      </FieldDescriptor>
      <FieldDescriptor id="3">
         <field.name>description</field.name>
         <column.name>Beschreibung</column.name>
         <jdbc_type>VARCHAR</jdbc_type>
      </FieldDescriptor>
   </ClassDescriptor>



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