Added DAOs. Attribute query objects seem to be able to generate hibernate predicates.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5467 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/service/cmr/attributes/AttrQueryHelper.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2005-2007 Alfresco Software Limited.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+ * As a special exception to the terms and conditions of version 2.0 of 
+ * the GPL, you may redistribute this Program in connection with Free/Libre 
+ * and Open Source Software ("FLOSS") applications as described in Alfresco's 
+ * FLOSS exception.  You should have recieved a copy of the text describing 
+ * the FLOSS exception, and it is also available here: 
+ * http://www.alfresco.com/legal/licensing
+ */
+
+package org.alfresco.service.cmr.attributes;
+
+import java.util.Map;
+
+/**
+ * An implementation of this is passed into an AttrQuery to aid it
+ * in generating the actual predicate.
+ * @author britt
+ */
+public interface AttrQueryHelper
+{
+    /**
+     * Get the next integer suffix for named arguments.
+     * @return The next integer suffix.
+     */
+    public int getNextSuffix();
+    
+    /**
+     * As an AttrQuery is generating the predicate, it
+     * tells this helper about its parameter names and bindings.
+     * @param name The name of the parameter
+     * @param value The binding.
+     */
+    public void setParameter(String name, String value);
+    
+    /**
+     * Get the parameter bindings for a generated predicate.
+     * @return The parameter bindings.
+     */
+    public Map<String, String> getParameters();
+}