Nestable metadata checkpoint. Preliminary mapping. Preliminary interface for value items.

Preliminary service interface.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5379 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

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

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+/*
+ * 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;
+
+/**
+ * This provides services for reading, writing, and querying global attributes.
+ * @author britt
+ */
+public interface AttributeService 
+{
+    /**
+     * Get a Global Attribute.
+     * @param path The path of the Attribute. Attribute paths are of the form
+     * {name}({name}|[index])*
+     * @return The value of the attribute or null.
+     */
+    public Object getValue(String path);
+    
+    /**
+     * Set a Global Attribute. Overwrites if it exists.
+     * @param name The name of the Attribute.
+     * @param value The value to set.
+     */
+    public void setValue(String path, Object value);
+    
+    /**
+     * Remove an Attribute.
+     * @param name The name of the Attribute.
+     */
+    public void removeValue(String path);
+    
+    // TODO A query interface.
+}