Fixed ALF-4551: DeletedNodeCleanupWorker will throw UnsupportedOperationException

- Included unit test to start NodeCleanupRegistry (sanity check only)
 - DAO call to 'purgeNodes'
 - Add job locking to cleanup tasks


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@22255 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/domain/node/TransactionQueryEntity.java

@@ -43,6 +43,7 @@ public class TransactionQueryEntity
     private List<Long> excludeTxnIds;
     private Long excludeServerId;
     private Boolean ascending;
+    private Boolean deletedNodes;
     private Long storeId;
     
     /**
@@ -66,6 +67,7 @@ public class TransactionQueryEntity
           .append(", excludeTxnIds=").append(excludeTxnIds)
           .append(", excludeServerId=").append(excludeServerId)
           .append(", ascending=").append(ascending)
+          .append(", deletedNodes=").append(deletedNodes)
           .append(", storeId=").append(storeId)
           .append("]");
         return sb.toString();
@@ -161,6 +163,16 @@ public class TransactionQueryEntity
         this.ascending = ascending;
     }
 
+    public Boolean getDeletedNodes()
+    {
+        return deletedNodes;
+    }
+
+    public void setDeletedNodes(Boolean deletedNodes)
+    {
+        this.deletedNodes = deletedNodes;
+    }
+
     public Long getStoreId()
     {
         return storeId;