Schema changes and ID-based node storage

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2727 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/domain/dao/QNameDaoComponent.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2005 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific
+ * language governing permissions and limitations under the
+ * License.
+ */
+package org.alfresco.repo.domain.dao;
+
+import org.alfresco.repo.domain.QNameEntity;
+import org.alfresco.service.namespace.QName;
+
+/**
+ * Service layer accessing persistent <b>qname</b> entities directly
+ * 
+ * @author Derek Hulley
+ */
+public interface QNameDaoComponent
+{
+    /**
+     * Create a qname entity
+     * 
+     * @param qname the qualified name to persist
+     * @return Returns either a newly created instance or an existing matching instance
+     */
+    public QNameEntity createQNameEntity(QName qname);
+    
+    /**
+     * @param qname the qname to match
+     * @return Returns the entity if it exists, otherwise null
+     */
+    public QNameEntity getQNameEntity(QName qname);
+
+    /**
+     * @param namespaceUri the namespace URI
+     * @param localName the localname part
+     * @return Return the entity if it exists, otherwise null
+     */
+    public QNameEntity getQNameEntity(String namespaceUri, String localName);
+}