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From "Aysegul Aydin Isiktekin (JIRA)" <jetspeed-...@portals.apache.org>
Subject [jira] Created: (JS2-1031) Ldap AttributeBasedRelationDAO class gets NullPointerException when trying to create a relation between two ldap entities
Date Wed, 10 Jun 2009 07:35:08 GMT
Ldap AttributeBasedRelationDAO class gets NullPointerException when trying to create a relation
between two ldap entities
-------------------------------------------------------------------------------------------------------------------------

                 Key: JS2-1031
                 URL: https://issues.apache.org/jira/browse/JS2-1031
             Project: Jetspeed 2
          Issue Type: Bug
          Components: LDAP
    Affects Versions: 2.2.0
         Environment: Windows XP, JRE 1.6.0.11, Tomcat 6.0.18, Apache DS 1.0.2
            Reporter: Aysegul Aydin Isiktekin


AttributeBasedRelationDAO class gets NullPointerException when trying to create a relation
between two ldap entities. StackTrace is as follows:

-----------------------------------------------------------------------------------------------------------------------------
SEVERE: Servlet.service() for servlet JetspeedContainer threw exception
java.lang.NullPointerException
	at org.apache.jetspeed.security.mapping.ldap.dao.impl.AttributeBasedRelationDAO.internalAddRelation(AttributeBasedRelationDAO.java:165)
	at org.apache.jetspeed.security.mapping.ldap.dao.impl.AttributeBasedRelationDAO.addRelation(AttributeBasedRelationDAO.java:230)
	at org.apache.jetspeed.security.mapping.ldap.dao.DefaultLDAPEntityManager.addRelation(DefaultLDAPEntityManager.java:88)
	at org.apache.jetspeed.security.spi.impl.JetspeedPrincipalLdapAssociationStorageManager.addAssociation(JetspeedPrincipalLdapAssociationStorageManager.java:56)
...more
-----------------------------------------------------------------------------------------------------------------------------

To fix the problem AttributeBasedRelationDAO class line 164 (internalAddRelation method body)
should be changed from:
--------------------------------------------
        if(relationAttribute == null)
        {
            fromEntity.setAttribute(this.relationAttribute,new ArrayList<String>());
   
        }
--------------------------------------------
to:
--------------------------------------------
		if (relationAttribute == null)
		{
			fromEntity.setAttribute(this.relationAttribute, new ArrayList<String>());
			relationAttribute = fromEntity.getAttribute(this.relationAttribute);
		}
--------------------------------------------

Just setting the attribute leaves relationAttribute NULL, causing the NPE.


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