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From "Mark R. Diggory" <mdigg...@latte.harvard.edu>
Subject Re: Problems Instantiating JNDI LdapDirContext as resource.
Date Tue, 13 Jan 2004 23:48:17 GMT
I've discovered a couple things I'm doing wrong:

1.) the Resource type attribute was wrong.
2.) the ResourceParams factory should be the LdapCtxFactory.

Now what I'm getting back is a null object.

<Resource name="ldap/DirContext" auth="Container" 
type="com.sun.jndi.ldap.LdapCtx"/>

<ResourceParams name="ldap/DirContext">
	<parameter>
		<name>factory</name>
		<value>com.sun.jndi.ldap.LdapCtxFactory</value>
	</parameter>
	<parameter>
		<name>java.naming.factory.initial</name>
		<value>com.sun.jndi.ldap.LdapCtxFactory</value>
	</parameter>
	<parameter>
		<name>java.naming.provider.url</name>
		<value>ldap://localhost:389</value>
	</parameter>
	<parameter>
		<name>java.naming.security.authentication</name>
		<value>none</value>
	</parameter>
	<parameter>
		<name>java.naming.referral</name>
		<value>follow</value>
	</parameter>
  	<parameter>
		<name>java.naming.ldap.referral.limit</name>
		<value>1</value>
	</parameter>
</ResourceParams>

Mark R. Diggory wrote:

> When I listBindings on "java:comp/env/ldap" and toString() the object 
> returned, this is what I get back.
> 
> 
> ResourceRef[className=com.sun.jndi.ldap.LdapCtxFactory,factoryClassLocation=null,factoryClassName=org.apache.naming.factory.ResourceFactory,{type=scope,content=Shareable},{type=auth,content=Container},{type=java.naming.provider.url,content=ldap://localhost:389},{type=java.naming.factory.initial,content=com.sun.jndi.ldap.LdapCtxFactory},{type=java.naming.ldap.referral.limit,content=1},{type=java.naming.security.authentication,content=none},{type=java.naming.referral,content=follow}]

> 
> 
> 
> Mark R. Diggory wrote:
> 
>> I'm hoping to be able to build a Federated Namespace and be able to 
>> access my ldap context in a federated fashion from the "java:comp" 
>> context for instance "java:comp/env/ldap/ou=foo,o=bar".
>>
>>
>> <Resource type="com.sun.jndi.ldap.LdapCtxFactory" auth="Container"
>> name="ldap"/>
>> <ResourceParams name="ldap">
>>    <parameter>
>>       <name>java.naming.factory.initial</name>
>>       <value>com.sun.jndi.ldap.LdapCtxFactory</value>
>>    </parameter>
>>    <parameter>
>>       <name>java.naming.provider.url</name>
>>       <value>ldap://localhost:389</value>
>>    </parameter>
>>    <parameter>
>>       <name>java.naming.security.authentication</name>
>>       <value>none</value>
>>    </parameter>
>>    <parameter>
>>       <name>java.naming.referral</name>
>>       <value>follow</value>
>>    </parameter>
>>    <parameter>
>>       <name>java.naming.ldap.referral.limit</name>
>>       <value>1</value>
>>    </parameter>
>> </ResourceParams>
>>
>>
>> If I understand correctly, all the ResourceParams will be handed to 
>> the constructor of a LdapDirContext by the above Factory provided by 
>> Sun and that I should be able to acquire this context simply with
>>
>> Context ctx = new InitialContext();
>> DirContext ldap_ctx = (DirContext) ctx.lookup("java:comp/env/ldap");
>>
>> However, I consistently get:
>>
>> Message: Cannot create resource instance
>> javax.naming.NamingException: Cannot create resource instance
>>     at 
>> org.apache.naming.factory.ResourceFactory.getObjectInstance(Unknown 
>> Source)
>>     at 
>> javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:299)
>>     at org.apache.naming.NamingContext.lookup(Unknown Source)
>>     at org.apache.naming.NamingContext.lookup(Unknown Source)
>>     at org.apache.naming.NamingContext.lookup(Unknown Source)
>>     at org.apache.naming.NamingContext.lookup(Unknown Source)
>>     at org.apache.naming.NamingContext.lookup(Unknown Source)
>>     at org.apache.naming.NamingContext.lookup(Unknown Source)
>>     at org.apache.naming.NamingContext.lookup(Unknown Source)
>>     at org.apache.naming.NamingContext.lookup(Unknown Source)
>>     at org.apache.naming.SelectorContext.lookup(Unknown Source)
>>     at javax.naming.InitialContext.lookup(InitialContext.java:345)
>>
>>
>> Any help or comment would be greatly appreciated.
>> -Mark
>>
> 

-- 
Mark Diggory
Software Developer
Harvard MIT Data Center
http://osprey.hmdc.harvard.edu

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