[Jaffa-cvs] JaffaCore/source/java/org/jaffa/persistence UOW.java, 1.7, 1.8

[Gautam J. <ga...@us...>]

Update of /cvsroot/jaffa/JaffaCore/source/java/org/jaffa/persistence
In directory sc8-pr-cvs6.sourceforge.net:/tmp/cvs-serv1541/source/java/org/jaffa/persistence

Modified Files:
	UOW.java 
Log Message:
Enhanced the UOW to support findByPK() and exists() methods, which utilize PreparedStatements for improved performance

Index: UOW.java
===================================================================
RCS file: /cvsroot/jaffa/JaffaCore/source/java/org/jaffa/persistence/UOW.java,v
retrieving revision 1.7
retrieving revision 1.8
diff -C2 -d -r1.7 -r1.8
*** UOW.java	9 Aug 2007 18:23:36 -0000	1.7
--- UOW.java	29 Aug 2007 18:32:11 -0000	1.8
***************
*** 149,152 ****
--- 149,177 ----
      }
      
+     /**
+      * Queries the underlying persistent store for an instance, based on the input key.
+      * @param criteria search profile for the query containing the key and locking strategy.
+      * @return an instance of the persistentClass which matches the input key. A null is returned if a match is not found.
+      * @throws QueryFailedException if any error occurs during the process.
+      * @throws PostLoadFailedException if any error occurs during the invocation of the PostLoad trigger on the persistent object.
+      */
+     public Object findByPK(Criteria criteria) throws QueryFailedException, PostLoadFailedException {
+         ensureActiveState();
+         criteria.setUow(this);
+         return m_engine.findByPK(criteria);
+     }
+     
+     /**
+      * Checks the underlying persistent store for the existence of an instance, based on the input key.
+      * @param criteria search profile for the query containing the key.
+      * @return true if an instance of the persistentClass which matches the input key is found.
+      * @throws QueryFailedException if any error occurs during the process.
+      */
+     public boolean exists(Criteria criteria) throws QueryFailedException {
+         ensureActiveState();
+         criteria.setUow(this);
+         return m_engine.exists(criteria);
+     }
+     
      
      /**