Hi there,
I have the following problem.
I opened a ticket in Day Care Support system, about CRX users/group membership that got lost while synchronization with our LDAP server.
Although when the user and the group had been created (and therefore taken from that same LDAP server), the membership was good.... but after some time the membership got lost......
So what i am trying to do now is a Java program that connects to CRX via RMI.
And gets the list of all the users from a group (aka membership).
The idea is to monitor the membership each seconds.
But when trying to get the property "rep:members" of the group, I have the following exception :
javax.jcr.ValueFormatException: Unknown value type 10
at org.apache.jackrabbit.rmi.server.ServerObject.getRepositoryException( ServerObject.java:139)
at org.apache.jackrabbit.rmi.server.ServerProperty.getValues(ServerPrope rty.java:71)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:60)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:611)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)"
....
I searched a little bit and found that "10" is the number for type WeakReference.
That's normal to me because memberships are stored in the group as a list reference to users linked to that group....
Anyways, what's not normal to me is that when the type is "10" the API does not let me get the Value (cf. ServerProperty.getValues() method)
Here is the program:
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import javax.imageio.spi.ServiceRegistry;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.Property;
import javax.jcr.PropertyIterator;
import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.RepositoryFactory;
import javax.jcr.Session;
import javax.jcr.SimpleCredentials;
import javax.jcr.Value;
public class Test {
public static void main(String[] args) {
String uri = "rmi://sma11c02.............:1234/crx";
String username = "admin";
char[] password = {....................};
String workspace = "crx.default";
String nodePath = "/home/groups/a";
Repository repository = null;
Session session = null;
try {
// ---------------------------------------------------
// Connection to repository via RMI
// ---------------------------------------------------
{
Map<String, String> jcrParameters = new HashMap<String, String>();
jcrParameters.put("org.apache.jackrabbit.reposito ry.uri", uri);
Iterator<RepositoryFactory> iterator = ServiceRegistry.lookupProviders(RepositoryFactory.class);
while (null == repository && iterator.hasNext()) {
repository = iterator.next().getRepository(jcrParameters);
}
}
if (repository == null) {
throw new IllegalStateException("Problem with connection to the repository...");
}
// ---------------------------------------------------
// Creation of a session to the workspace
// ---------------------------------------------------
session = repository.login(new SimpleCredentials(username, password), workspace);
if (session == null) {
throw new IllegalStateException("Problem with creation of session to the workspace...");
}
// ---------------------------------------------------
// Get the targetted node
// ---------------------------------------------------
Node node = session.getNode(nodePath);
System.out.println("Node : " + node.getName());
System.out.println();
PropertyIterator properties = node.getProperties();
System.out.println("List of properties for this node :");
while (properties.hasNext()) {
Property property = properties.nextProperty();
System.out.print("\t"+property.getName() + " : ");
if (property.isMultiple()) {
Value[] values = property.getValues();
for (int i = 0; i < values.length; i++) {
System.out.print(values[i]);
if (i+1 != values.length) {
System.out.print(", ");
}
}
System.out.println();
} else {
Value value = property.getValue();
System.out.println(value);
}
}
System.out.println();
NodeIterator kids = node.getNodes();
System.out.println("List of children nodes for this node :");
while (kids.hasNext()) {
Node kid = kids.nextNode();
System.out.println("\tChild node : "+kid.getName());
PropertyIterator kidProperties = kid.getProperties();
System.out.println("List of properties for this child :");
while (kidProperties.hasNext()) {
Property property = kidProperties.nextProperty();
System.out.print("\t"+property.getName() + " : ");
if (property.isMultiple()) {
Value[] values = property.getValues();
for (int i = 0; i < values.length; i++) {
System.out.print(values[i]);
if (i+1 != values.length) {
System.out.print(", ");
}
}
System.out.println();
} else {
Value value = property.getValue();
System.out.println(value);
}
}
System.out.println();
}
} catch (RepositoryException e) {
e.printStackTrace();
} finally {
if (session != null) {
session.logout();
}
}
}
}
Here is the output of the below program:
Node : a
List of properties for this node :
jcr:createdBy : admin
jcr:mixinTypes : mix:lockable
jcr:created : 2011-10-25T16:58:48.140+02:00
jcr:primaryType : rep:AuthorizableFolder
List of children nodes for this node :
Child node : administrators
List of properties for this child :
jcr:createdBy : admin
rep:principalName : administrators
rep:members : javax.jcr.ValueFormatException: Unknown value type 10
at org.apache.jackrabbit.rmi.server.ServerObject.getRepositoryException( ServerObject.java:139)
at org.apache.jackrabbit.rmi.server.ServerProperty.getValues(ServerPrope rty.java:71)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:60)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:611)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)
at sun.rmi.transport.Transport$1.run(Transport.java:171)
at java.security.AccessController.doPrivileged(AccessController.java:284 )
at sun.rmi.transport.Transport.serviceCall(Transport.java:167)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:5 47)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTranspor t.java:802)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport .java:661)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec utor.java:897)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor .java:919)
at java.lang.Thread.run(Thread.java:736)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknow n Source)
at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at org.apache.jackrabbit.rmi.server.ServerProperty_Stub.getValues(Unknow n Source)
at org.apache.jackrabbit.rmi.client.ClientProperty.getValues(ClientPrope rty.java:173)
at Test.main(Test.java:96)
Here is the list of jar files i'm using with this program:
2862818581 61388 crx-rmi-2.2.0.jar
732434195 335603 jackrabbit-jcr-commons-2.4.0.jar
1107929681 411330 jackrabbit-jcr-rmi-2.4.0.jar
3096295771 69246 jcr-2.0.jar
1206850944 367444 log4j-1.2.14.jar
685167282 25962 slf4j-api-1.6.4.jar
2025068856 9748 slf4j-log4j12-1.6.4.jar
Finally, we are using CQ 5.4 (CRX 2.2) with the latest hotfix and under Websphere 7.0
Best regards,
Vincent FINET
