Problem: using modeshape with JBoss JNDI

[m.jawwad]

Hi,

      I am new to ModeShape and was going through the tutorials for modeshape configurations etc. I read about working of Modeshape on JBoss AS 7 (JNDI). So I decided to give it a try. I followed all the steps provided on the page: https://docs.jboss.org/author/display/MODE/ModeShape+and+JBoss+AS7

But unfortunately when I try to access modeshape through a simple servlet using the following code:

--

InitialContext context = new InitialContext();

javax.jcr.Repository repository = (javax.jcr.Repository) context.lookup("jcr/sample");

--

, I get the following exception:

----------------------------------------------------------------------------------------------------------------------------

java.lang.ClassCastException: org.modeshape.jcr.JcrRepository cannot be cast to javax.jcr.Repository

com.virtualcode.modeshape.servlet.modeshapedemo.doGet(modeshapedemo.java:72)

javax.servlet.http.HttpServlet.service(HttpServlet.java:734)

javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

-----------------------------------------------------------------------------------------------------------------------------

Any idea what I might be missing or what I might be doing wrong?

Thanks in advance.

[hchiorean]

Hi,

Assuming your servlet is packaged in a .war file, make sure your war file does not include neither jcr-2.0.jar nor modeshape-jcr-api.jar nor any other ModeShape jars (if you're using Maven to build, those should be provided).

Your web application should use the same jars that are installed/deployed in the AS7 server via the ModeShape module. In your war file,  just to add a dependency to those modules, either via a MANIFEST.MF, or a jboss-deployment-structure.xml file:

<jboss-deployment-structure>

    <deployment>

        <dependencies>

            <module name="javax.jcr"/>

            <module name="org.modeshape.jcr.api" services="import"/>

            <module name="org.modeshape" services="import"/>

        </dependencies>

    </deployment>

</jboss-deployment-structure>

[m.jawwad]

Hi,

          Thanks a lot for the response. Yes my servlet is packaged in a .WAR, but I am not using Maven. Also as recommended, I removed modeshape  and jcr2.0.jars  but the result is the same. i.e.

           java.lang.ClassCastException: org.modeshape.jcr.JcrRepository cannot be cast to javax.jcr.Repository

          Currently deployed jars (in the WAR) are:

-----------------------------------------------------------

avro-1.5.1.jar

c3p0-0.9.1.jar

cglib-2.2.jar

commons-beanutils-1.8.0.jar

commons-codec-1.5.jar

commons-collections-3.2.1.jar

commons-compress-1.4.1.jar

commons-dbcp-1.3.jar

commons-digester-1.7.jar

commons-fileupload-1.2.1.jar

commons-io-1.4.jar

commons-lang-2.6.jar

commons-logging-1.1.jar

commons-pool-1.5.4.jar

concurrent-1.3.4.jar

core-renderer-minimal.jar

core-renderer.jar

cssparser-0.9.5.jar

dom4j-1.6.1.jar

guava-12.0.jar

hibernate-commons-annotations-4.0.1.Final.jar

hibernate-search-engine-4.1.1.Final.jar

infinispan-core-5.1.2.FINAL.jar

jackson-core-asl-1.9.2.jar

jackson-mapper-asl-1.9.2.jar

jakarta-regexp-1.4.jar

jboss-logging-3.1.0.CR2.jar

jboss-marshalling-1.3.6.GA.jar

jboss-marshalling-river-1.3.6.GA.jar

jboss-transaction-api_1.1_spec-1.0.0.Final.jar

jcr-2.0.jar     (removed)

jgroups-3.0.6.Final.jar

joda-time-1.6.2.jar

jsf-api.jar

jsf-impl.jar

jstl.jar

lucene-core-3.5.0.jar

lucene-regex-3.0.3.jar

modeshape-common-3.1.3.Final.jar (removed)

modeshape-jcr-3.1.3.Final.jar (removed)

modeshape-jcr-api-3.1.3.Final.jar (removed)

modeshape-schematic-3.1.3.Final.jar (removed)

modeshape-sequencer-text-3.1.3.Final.jar (removed)

modeshape-sequencer-xsd-3.1.3.Final.jar (removed)

modeshape-sequencer-zip-3.1.3.Final.jar (removed)

paranamer-2.3.jar

poi-3.8.jar

poi-ooxml-3.8.jar

poi-ooxml-schemas-3.8.jar

poi-scratchpad-3.8.jar

rhq-pluginAnnotations-3.0.4.jar

richfaces-components-api-4.2.2.Final.jar

richfaces-components-ui-4.2.2.Final.jar

richfaces-core-api-4.2.2.Final.jar

richfaces-core-impl-4.2.2.Final.jar

sac-1.3.jar

snappy-java-1.0.1-rc3.jar

tika-core-1.2.jar

tika-parsers-1.2.jar

vorbis-java-core-0.1-tests.jar

vorbis-java-core-0.1.jar

vorbis-java-tika-0.1.jar

xmlbeans-2.3.0.jar

xz-1.0.jar

--------------------------------------------------------

Any idea what else I might be missing?

Thanks again.

[hchiorean]

Do you need any of the above jars directly in your code ? (e.g. I'm seeing a lot of tika + dependencies there, which I'm not sure you need). Normally, most (if not all of these jars) are already deployed & installed in application server (some of them are present out-of-the-box, some are present after you've installed the ModeShape kit). So normally in your web application you just need a deployment descriptor which lists the correct module dependencies.

What does you deployment descriptor look like ? (either MANIFEST.MF or jboss-deployment-structure.xml)

[m.jawwad]

Hi.

      Please ignore my last reply . There problem was that I was missing jboss-deployment-structure.xml in the WAR. After reading your reply, I checked and added the file. And now the code is working. Also about all the JARs, they were all added from the modeshape-3.1.3-dist download and yes most of them are not needed so I am removing jars that are not required.

       Thanks a lot for the help.

[sdotlittlenail]

Hi,

instead of a WAR  I'm using EJB as packaging type to reuse the jar file (containing the modeshape functionality) within a separate project.

Unfortunately I'm getting the same error message on runtime:

java.lang.ClassCastException: org.modeshape.jcr.JcrRepository cannot be cast to javax.jcr.Repository

The file jboss-deployment-structure.xml is located in main/resources/META-INF/ within my jcr ejb packaging project.

Kind regards,
Stefan