ClassCastException in PersistenceManagerImpl.getObjectByIdFilter

Question

Getting a ClassCastException with 2.3.1, when trying to get an
object by id. The class has a composite key (String + int) and
used to wrk with 2.2.6. We suspected it might have something to
do with the String constructor that we had to add as part of the
code upgrade, but it never seems to be invoked (running in a
non-managed environment).
What are we doing wrong here? What's happening at line 842 in
PersistenceManagerImpl? Here's the relevant portion of the stack
trace:
javax.jdo.JDOException: java.lang.ClassCastException:
java.lang.String
NestedThrowables:
java.lang.ClassCastException: java.lang.String
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectByIdFilter(PersistenceManagerImpl.java:842)
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectById(PersistenceManagerImpl.java:736)
The Oid class:
public static class Oid implements java.io.Serializable {
public String partner;
public int domainId;
public Oid() {
super();
public Oid(String name, XRDomain domain) {
partner = name;
domainId = domain.getId();
public Oid(String s) {
int pos = s.indexOf( ':' );
if (pos < 0) {
partner = s;
} else {
partner = s.substring( 0, pos );
domainId = Integer.parseInt( s.substring( pos + 1,
s.length() ) );
public String toString() {
return partner + ":" + domainId;
public boolean equals(Object obj) {
if (this == obj) {
return true;
} else if (obj == null || getClass() != obj.getClass()) {
return false;
Oid other = (Oid) obj;
return (domainId == other.domainId)
&& (partner == null? other.partner == null:
partner.equals(other.partner));
public int hashCode() {
return domainId * (partner != null? partner.hashCode(): 1);
Thanks,
Alex Albu
Commerce Technologies, Inc.
21 Corporate Drive
Clifton Park, NY 12065

Answer 1

Here it is. Seems similar to issue in the previous post.
javax.jdo.JDOException: java.lang.ClassCastException:
java.lang.String
NestedThrowables:
java.lang.ClassCastException: java.lang.String
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectByIdFilter(PersistenceManagerImpl.java:842)
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectById(PersistenceManagerImpl.java:736)
at
com.commercehub.core.xr.XRService.getHubVal(XRService.java:63)
at
com.commercehub.core.xr.XRServiceTest.testGetPartnerVal(XRServiceTest.java:29)
at java.lang.reflect.Method.invoke(Native Method)
at junit.framework.TestCase.runTest(TestCase.java:166)
at junit.framework.TestCase.runBare(TestCase.java:140)
at
junit.framework.TestResult$1.protect(TestResult.java:106)
at
junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:131)
at junit.framework.TestSuite.runTest(TestSuite.java:173)
at junit.framework.TestSuite.run(TestSuite.java:168)
at junit.textui.TestRunner.doRun(TestRunner.java:74)
at junit.textui.TestRunner.run(TestRunner.java:200)
at
com.commercehub.core.xr.XRServiceTest.main(XRServiceTest.java:100)
NestedThrowablesStackTrace:
java.lang.ClassCastException: java.lang.String
at
com.solarmetric.kodo.impl.jdbc.schema.dict.GenericDictionary.toSQL(GenericDictionary.java:212)
at
com.solarmetric.kodo.impl.jdbc.sql.ObjectSelect.where(ObjectSelect.java:179)
at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.loadByPK(JDBCStoreManager.java:372)
at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.initialize(JDBCStoreManager.java:250)
at
com.solarmetric.kodo.runtime.StateManagerImpl.loadInitialState(StateManagerImpl.java:112)
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectByIdFilter(PersistenceManagerImpl.java:831)
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectById(PersistenceManagerImpl.java:736)
at
com.commercehub.core.xr.XRService.getHubVal(XRService.java:63)
at
com.commercehub.core.xr.XRServiceTest.testGetPartnerVal(XRServiceTest.java:29)
at java.lang.reflect.Method.invoke(Native Method)
at junit.framework.TestCase.runTest(TestCase.java:166)
at junit.framework.TestCase.runBare(TestCase.java:140)
at
junit.framework.TestResult$1.protect(TestResult.java:106)
at
junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:131)
at junit.framework.TestSuite.runTest(TestSuite.java:173)
at junit.framework.TestSuite.run(TestSuite.java:168)
at junit.textui.TestRunner.doRun(TestRunner.java:74)
at junit.textui.TestRunner.run(TestRunner.java:200)
at
com.commercehub.core.xr.XRServiceTest.main(XRServiceTest.java:100)
Abe White wrote:
What are we doing wrong here? What's happening at line 842 in
PersistenceManagerImpl? Here's the relevant portion of the stack
trace:Please post the entire stack trace.--
Alex Albu
Commerce Technologies, Inc.
21 Corporate Drive
Clifton Park, NY 12065