New audit config using 3.2 XSD

- Added helper classes for auto-generating code (core project)
 - Audit configuration is loaded using a separate bean and unmarshalled using JAXB
 - First cut of data extractors and generators that will be required


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@15842 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/audit/extractor/DataExtractor.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2005-2009 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.repo.audit.extractor;
+
+/**
+ * Interface for Audit data value extractors.  These are used to extract auditable values
+ * from those arguments, return values, exceptions and any other value passed into the audit
+ * components for recording.
+ * <p/>
+ * The framework will first determine if data passed into the instance is {@link #isSupported(Object) supported}
+ * and will then pass it in for {@link #convert(Object) conversion} to the type that will be
+ * recorded.
+ * 
+ * @author Derek Hulley
+ * @since 3.2
+ */
+public interface DataExtractor
+{
+    /**
+     * Determines if the extractor will be able to pull any data from the given value.
+     * 
+     * @param data          the data that might be useful to this extractor (could be <tt>null</tt>)
+     * @return              Returns <tt>true</tt> if the data is meaningful to this extractor
+     */
+    public boolean isSupported(Object data);
+    
+    /**
+     * Convert an value passed into the audit components into a value to be recorded.
+     * 
+     * @param value                 the value to convert
+     * @return                      the (potentially) converted value
+     * @throws Throwable            All errors will be handled by the calling framework
+     */
+    public Object convert(Object value) throws Throwable;
+}

source/java/org/alfresco/repo/audit/extractor/SimpleValueDataExtractor.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2005-2009 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.repo.audit.extractor;
+
+/**
+ * An extractor that supports all values and does not conversion.
+ * This implementation can be used as a base class, although there is little
+ * abstraction necessary for the converters in general.
+ * 
+ * @author Derek Hulley
+ * @since 3.2
+ */
+public class SimpleValueDataExtractor implements DataExtractor
+{
+    /**
+     * @return          Returns <tt>true</tt> always
+     */
+    public boolean isSupported(Object data)
+    {
+        return true;
+    }
+
+    /**
+     * Just returns the value unchanged
+     */
+    public Object convert(Object in) throws Throwable
+    {
+        return in;
+    }
+}