REPO-1390 , REPO-1391: Add support for retrieving site presets

-  Implemented the API;
   -  Added automated tests.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/DEV/5.2.N/root@131764 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/rest/workflow/api/impl/MapBasedQueryWalkerOrSupported.java

@@ -0,0 +1,55 @@
+/*
+ * #%L
+ * Alfresco Remote API
+ * %%
+ * Copyright (C) 2005 - 2016 Alfresco Software Limited
+ * %%
+ * This file is part of the Alfresco software. 
+ * If the software was purchased under a paid Alfresco license, the terms of 
+ * the paid license agreement will prevail.  Otherwise, the software is 
+ * provided under the following open source license terms:
+ * 
+ * Alfresco is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * Alfresco 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 Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
+ * #L%
+ */
+package org.alfresco.rest.workflow.api.impl;
+
+import java.util.Set;
+
+/**
+ * Query walker extension of MapBasedQueryWalker created to
+ * add support for OR operation and set AND operation as unsupported.
+ *
+ */
+public class MapBasedQueryWalkerOrSupported extends MapBasedQueryWalker
+{
+
+    public MapBasedQueryWalkerOrSupported(Set<String> supportedEqualsParameters, Set<String> supportedMatchesParameters)
+    {
+        super(supportedEqualsParameters, supportedMatchesParameters);
+    }
+
+    @Override
+    public void or()
+    {
+        // We don't need to do anything in this method. However, overriding the
+        // method indicates that OR is supported.
+    }
+
+    @Override
+    public void and()
+    {
+        throw UNSUPPORTED;
+    }
+}