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From "Kalka, Edyta" <Edyta.Ka...@pl.compuware.com>
Subject exception after calling webdav search command
Date Fri, 15 Dec 2006 12:27:55 GMT
Hi,

 

After calling webdav search command where search query is: "//element(*,
corona:directory)", I received the following exception:

15.12.2006 13:01:35 *ERROR* SearchResourceImpl: exception while
retrieving values from client row (SearchResourceImpl.java, line 171)

java.lang.NullPointerException

      at
org.apache.jackrabbit.rmi.value.StatefulValueAdapter.getType(StatefulVal
ueAdapter.java:98)

      at
org.apache.jackrabbit.rmi.value.SerialValue.<init>(SerialValue.java:65)

      at
org.apache.jackrabbit.rmi.value.SerialValueFactory.makeSerialValue(Seria
lValueFactory.java:100)

      at
org.apache.jackrabbit.rmi.value.SerialValueFactory.makeSerialValueArray(
SerialValueFactory.java:77)

      at
org.apache.jackrabbit.rmi.server.ServerRow.getValues(ServerRow.java:58)

      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

      at java.lang.reflect.Method.invoke(Unknown Source)

      at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)

      at sun.rmi.transport.Transport$1.run(Unknown Source)

      at java.security.AccessController.doPrivileged(Native Method)

      at sun.rmi.transport.Transport.serviceCall(Unknown Source)

      at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown
Source)

      at
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)

      at java.lang.Thread.run(Unknown Source)

      at
sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknown
Source)

      at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)

      at sun.rmi.server.UnicastRef.invoke(Unknown Source)

      at
org.apache.jackrabbit.rmi.server.ServerRow_Stub.getValues(Unknown
Source)

      at
org.apache.jackrabbit.rmi.client.ClientRow.getValues(ClientRow.java:53)

      at
org.apache.jackrabbit.webdav.jcr.search.SearchResourceImpl.queryResultTo
MultiStatus(SearchResourceImpl.java:169)

      at
org.apache.jackrabbit.webdav.jcr.search.SearchResourceImpl.search(Search
ResourceImpl.java:86)

      at
org.apache.jackrabbit.webdav.jcr.AbstractResource.search(AbstractResourc
e.java:622)

      at
org.apache.jackrabbit.server.AbstractWebdavServlet.doSearch(AbstractWebd
avServlet.java:1017)

      at
org.apache.jackrabbit.server.AbstractWebdavServlet.execute(AbstractWebda
vServlet.java:271)

      at
org.apache.jackrabbit.server.AbstractWebdavServlet.service(AbstractWebda
vServlet.java:187)

      at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

      at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:252)

      at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:173)

      at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:213)

      at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:178)

      at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:126)

      at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:105)

      at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:107)

      at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:1
48)

      at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:86
9)

      at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.proc
essConnection(Http11BaseProtocol.java:664)

      at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint
.java:527)

      at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollow
erWorkerThread.java:80)

      at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool
.java:684)

      at java.lang.Thread.run(Unknown Source)

 

What is the reason of such exception?

 

I tested this query with the JCR Browser and it returned valid results.

 

To get any response I surrounded row.getValues with try-catch inside
org.apache.jackrabbit.webdav.jcr.search.SearchResourceImpl.queryResultTo
MultiStatus (plus do not instantiate SearchResultProperty if there are
no values) - after this I received such response:

207 Multi-Status

content-type: text/xml;charset=UTF-8

date: Fri, 15 Dec 2006 12:01:35 GMT

content-length: 1331

server: Apache-Coyote/1.1

 

<?xml version="1.0" encoding="UTF-8"?>

<D:multistatus xmlns:D="DAV:">

    <D:response>

 
<D:href>http://localhost:8080/org.eclipse.corona.jackrabbit.web/server/J
ackrabbitDemoWorkspace/corona%3aroot/DemoDirectory/</D:href>

    </D:response>

    <D:response>

 
<D:href>http://localhost:8080/org.eclipse.corona.jackrabbit.web/server/J
ackrabbitDemoWorkspace/corona%3aroot/DemoDirectory/edka4/</D:href>

    </D:response>

    <D:response>

 
<D:href>http://localhost:8080/org.eclipse.corona.jackrabbit.web/server/J
ackrabbitDemoWorkspace/corona%3aroot/DemoDirectory_copy/edka4/</D:href>

    </D:response>

    <D:response>

 
<D:href>http://localhost:8080/org.eclipse.corona.jackrabbit.web/server/J
ackrabbitDemoWorkspace/test2/</D:href>

    </D:response>

    <D:response>

 
<D:href>http://localhost:8080/org.eclipse.corona.jackrabbit.web/server/J
ackrabbitDemoWorkspace/corona%3aroot/test/</D:href>

    </D:response>

    <D:response>

 
<D:href>http://localhost:8080/org.eclipse.corona.jackrabbit.web/server/J
ackrabbitDemoWorkspace/corona%3aroot/</D:href>

    </D:response>

    <D:response>

 
<D:href>http://localhost:8080/org.eclipse.corona.jackrabbit.web/server/J
ackrabbitDemoWorkspace/corona%3aroot/DemoDirectory_copy/</D:href>

    </D:response>

</D:multistatus>

 

 

Best regards

Edyta

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