Re: FW: Custom Node Types XML

Tue, 29 Aug 2006 09:41:16 -0700 

Hi,

This works fine..Thanks for your suggestions.
I want to write some more custom nodes extending nt:file and nt:unstructured. 
I have all the following custom node definitions in a single file.
Once, it is registered, I am not able to add more custom node definitions to that file. 
It says javax.jcr. NamespaceException. : Mapping already exists.

Also I found that it is not possible to unregister the namesapce.

Then, How can I add additional node definitons that cnd file and register?




From: "Stefan Guggisberg" <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: FW: Custom Node Types XML
Date: Fri, 25 Aug 2006 16:40:11 +0200

On 8/25/06, Shanmugam Gopal <[EMAIL PROTECTED]> wrote:

Hai,

Yeah..I edited Custom_nodetypes.xml and put that configuration.
Ok..I learned from jackrabbit.apache.org that we need to create some cnd
file for custom node type
and register using CompactNodeTypeDefReader.
Now I am facing the following proble. Pls help me to get rid off this. I am struggling with this problem for past couple of weeks. It will be better, If 
we post proper document with comple example.
I am trying to create a node like nt:resource with one more property called 
jcr:user
I saved the following configuration in myappResource.cnd file.

[myapp:resource] > mix:referencable
- jcr:encoding
- jcr:mimeType mandatory
- jcr:data (binary) mandatory
- jcr:lastModified (date) mandatory ignore
- jcr:user


why don't you just extend nt:resource?

e.g.

[myapp:resource] > nt:resource
- myapp:user (string)

note that you shouldn't use the reserved prefixes (jcr, nt, ...)
in your own node types.

you can use the following code to register your new node type
using the above definition:

       NamespaceRegistry nsReg = wsp.getNamespaceRegistry();
       nsReg.registerNamespace("myapp", "http://www.acme.com/myapp";);

       JackrabbitNodeTypeManager manager = (JackrabbitNodeTypeManager)
               session.getWorkspace().getNodeTypeManager();
manager.registerNodeTypes(new FileInputStream("myapp_resource.cnd"), 
               JackrabbitNodeTypeManager.TEXT_X_JCR_CND);


cheers
stefan



I am using the following code to register the custom node.(Got it from
apache site).

import javax.jcr.Workspace;
import org.apache.jackrabbit.core.nodetype.NodeTypeDef;
import org.apache.jackrabbit.core.nodetype.NodeTypeManagerImpl;
import org.apache.jackrabbit.core.nodetype.NodeTypeRegistry;
import org.apache.jackrabbit.core.nodetype.compact.CompactNodeTypeDefReader; 
import java.io.FileReader;
import java.util.List;
import java.util.Iterator

public class CustomNodeTypeExample {
    public static void RegisterCustomNodeTypes(Workspace ws, String
cndFileName){
        // Read in the CND file
        FileReader fileReader = new FileReader(cndFileName);
        // Create a CompactNodeTypeDefReader
        CompactNodeTypeDefReader cndReader = new
CompactNodeTypeDefReader(fileReader, cndFileName);
        // Get the List of NodeTypeDef objects
        List ntdList = cndReader.getNodeTypeDefs;
        // Get the NodeTypeManager from the Workspace.
// Note that it must be cast from the generic JCR NodeTypeManager to 
the
        // Jackrabbit-specific implementation.
        NodeTypeManagerImpl ntmgr
=(NodeTypeManagerImpl)ws.getNodeTypeManager();
        // Acquire the NodeTypeRegistry
        NodeTypeRegistry ntreg = ntmgr.getNodeTypeRegistry();
        // Loop through the prepared NodeTypeDefs
        for (Iterator i = ntdList.iterator(); i.hasNext();) {
            // Get the NodeTypeDef...
            NodeTypeDef ntd = (NodeTypeDef)i.next();
            // ...and register it
            ntreg.registerNodeType(ntd);
        }
   }
}


But I am getting the following exception:
org.apache.jackrabbit.core.nodetype.compact.ParseException: Error while
parsing 'myapp:resource' (D:\customNode\customNode.cnd, line 1)
        at
org.apache.jackrabbit.core.nodetype.compact.Lexer.fail(Lexer.java:146)

If I use the following XML format

<?xml version="1.0" encoding="iso-8859-1"?>
< nodeTypes xmlns:my="http://www.mycompany/my/1.0";;>
<nodeType name="my:resource"
          isMixin="false"
          hasOrderableChildNodes="false"
          primaryItemName="jcr:data">
    <supertypes>
        <supertype>nt:base</supertype>
        <supertype>mix:referenceable</supertype>
    </supertypes>
    <propertyDefinition name="jcr:encoding"
                        requiredType="String"
                        autoCreated="false"
                        mandatory="false"
                        onParentVersion="COPY"
                        protected="false"
                        multiple="false"/>

    <propertyDefinition name="jcr:mimeType"
                        requiredType="String"
                        autoCreated="false"
                        mandatory="true"
                        onParentVersion="COPY"
                        protected="false"
                        multiple="false"/>

    <propertyDefinition name="jcr:data"
                        requiredType="Binary"
                        autoCreated="false"
                        mandatory="true"
                        onParentVersion="COPY"
                        protected="false"
                        multiple="false"/>

    <propertyDefinition name="jcr:lastModified"
                        requiredType="Date"
                        autoCreated="false"
                        mandatory="true"
                        onParentVersion="IGNORE"
                        protected="false"
                        multiple="false"/>

   <propertyDefinition name="jcr:user"
                        requiredType="String"
                        autoCreated="false"
                        mandatory="true"
                        onParentVersion="IGNORE"
                        protected="false"
                        multiple="false"/>
</nodeType>
</nodeTypes>

I am getting the following exception
org.apache.jackrabbit.core.nodetype.compact.ParseException: Missing = in
namespace decl. (D:\customNode\customNode.xml, line 1)











>From: "Stefan Guggisberg" <[EMAIL PROTECTED]>
>Reply-To: [email protected]
>To: [email protected]
>Subject: Re: FW: Custom Node Types XML
>Date: Thu, 24 Aug 2006 15:39:58 +0200
>
>On 8/24/06, Shanmugam Gopal <[EMAIL PROTECTED]> wrote:
>>Hi,
>>
>>I am trying to create a custom node by extending nt:resource so that I can 
>>add some custom properties to that node.
>>
>>Following is the Custom_nodetypes.xml configuration.
>
>did you edit custom_nodetypes.xml manually?
>
>custom_nodetypes.xml is used internally for persisting node types
>registered through the api. it's *not* meant to be
>user-provided/manipulated
>and therefore *not* supported.
>
>you should use the approproate api (e.g.
>org.apache.jackrabbit.api.JackrabbitNodeTypeManager) for registering
>custom node types.
>
>cheers
>stefan
>
>>
>><?xml version="1.0" encoding="UTF-8"?>
>>
>><nodeTypes xmlns:nt="http://www.jcp.org/jcr/nt/1.0";
>>xmlns:jcr="http://www.jcp.org/jcr/1.0"; xmlns:rep="internal"
>>xmlns:sv="http://www.jcp.org/jcr/sv/1.0";
>>xmlns:plateau="http://www.apache.org/jackrabbit/plateau";
>>xmlns:mix="http://www.jcp.org/jcr/mix/1.0";>
>><nodeType name="plateau:resource" isMixin="false"
>>hasOrderableChildNodes="false" primaryItemName="jcr:data">
>>
>>      <supertypes>
>>
>>              <supertype>nt:resource</supertype>
>>
>>      </supertypes>
>>
>>      <propertyDefinition name="plateau:username" requiredType="String"
>>autoCreated="false" mandatory="false" onParentVersion="COPY"
>>protected="false" multiple="false"/>
>>
>>      <propertyDefinition name="plateau:Author" requiredType="String"
>>autoCreated="false" mandatory="false" onParentVersion="COPY"
>>protected="false" multiple="false"/>
>>
>></nodeType>
>></nodeTypes>
>>
>>But I am getting the Following ClassCastException while registering this 
>>custom node.
>>
>>
>> >java.lang.ClassCastException
>> >
>> >         at
>> >org.apache.jackrabbit.core.util.DOMWalker.iterateElements(DOMWalker.java 
>> >:219)
>> >
>> >         at
>> >org.apache.jackrabbit.core.nodetype.xml.NodeTypeReader.getNodeTypeDefs(N 
>> >odeTypeReader.java:118)
>> >
>> >         at
>> >org.apache.jackrabbit.core.nodetype.xml.NodeTypeReader.read(NodeTypeRead 
>> >er.java:64)
>> >
>> >         at
>> >org.apache.jackrabbit.core.nodetype.NodeTypeDefStore.load(NodeTypeDefSto 
>> >re.java:54)
>> >
>> >         at
>> >org.apache.jackrabbit.core.nodetype.NodeTypeRegistry.loadCustomNodeTypeD 
>> >efs(NodeTypeRegistry.java:1681)
>> >
>> >         at
>> >org.apache.jackrabbit.core.nodetype.NodeTypeRegistry.<init>(NodeTypeRegi 
>> >stry.java:210)
>> >
>> >         at
>> >org.apache.jackrabbit.core.nodetype.NodeTypeRegistry.create(NodeTypeRegi 
>> >stry.java:123)
>> >
>> >         at
>> >org.apache.jackrabbit.core.RepositoryImpl.createNodeTypeRegistry(Reposit 
>> >oryImpl.java:501)
>> >
>> >         at
>> >org.apache.jackrabbit.core.RepositoryImpl.<init>(RepositoryImpl.java:238 
>> >)
>> >
>> >         at
>> >org.apache.jackrabbit.core.RepositoryImpl.create(RepositoryImpl.java:514 
>> >)
>> >
>> >         at
>> >org.apache.jackrabbit.j2ee.RepositoryStartupServlet.createRepository(Rep 
>> >ositoryStartupServlet.java:301)
>> >
>> >         at
>> >org.apache.jackrabbit.j2ee.RepositoryStartupServlet.initRepository(Repos 
>> >itoryStartupServlet.java:272)
>> >
>> >         at
>> >org.apache.jackrabbit.j2ee.RepositoryStartupServlet.init(RepositoryStart 
>> >upServlet.java:189)
>> >
>> > at javax.servlet.GenericServlet.init(GenericServlet.java:211) 
>>
>>
>>
>>Is there any wrong with the custom node definition ??
>>
>>Regards,
>>Shanmugam G
>>
>>_________________________________________________________________
>>Shah Rukh fan? Know all about the Baadshah of Bollywood. On MSN Search
>>http://server1.msn.co.in/profile/shahrukh.asp
>>
>>

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