Merge from SEAMIST3

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@10720 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/cmis/Navigation.java

@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2005-2008 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.cmis;
+
+import java.util.List;
+
+import org.alfresco.model.ContentModel;
+import org.alfresco.repo.search.QueryParameterDefImpl;
+import org.alfresco.service.cmr.dictionary.DataTypeDefinition;
+import org.alfresco.service.cmr.dictionary.DictionaryService;
+import org.alfresco.service.cmr.repository.NodeRef;
+import org.alfresco.service.cmr.search.QueryParameterDefinition;
+import org.alfresco.service.cmr.search.ResultSet;
+import org.alfresco.service.cmr.search.SearchParameters;
+import org.alfresco.service.cmr.search.SearchService;
+import org.alfresco.service.namespace.NamespaceService;
+import org.alfresco.service.namespace.QName;
+import org.springframework.beans.factory.InitializingBean;
+
+
+/**
+ * CMIS Navigation Service
+ * 
+ * @author davidc
+ */
+public class Navigation implements InitializingBean
+{
+    /**
+     * Types Filter
+     *  
+     * @author davidc
+     */
+    public enum TypesFilter
+    {
+        Folders,
+        FoldersAndDocuments,
+        Documents
+    };
+        
+    /** Query Parameters */
+    private static final QName PARAM_PARENT = QName.createQName(NamespaceService.CONTENT_MODEL_1_0_URI, "parent");
+
+    /** Shallow search for all files and folders */
+    private static final String LUCENE_QUERY_SHALLOW_FOLDERS =
+        "+PARENT:\"${cm:parent}\" " +
+        "-TYPE:\"" + ContentModel.TYPE_SYSTEM_FOLDER + "\" " +
+        "+TYPE:\"" + ContentModel.TYPE_FOLDER + "\" ";
+    
+    /** Shallow search for all files and folders */
+    private static final String LUCENE_QUERY_SHALLOW_FILES =
+        "+PARENT:\"${cm:parent}\" " +
+        "-TYPE:\"" + ContentModel.TYPE_SYSTEM_FOLDER + "\" " +
+        "+TYPE:\"" + ContentModel.TYPE_CONTENT + "\" ";
+
+    // dependencies
+    private DictionaryService dictionaryService;
+    private SearchService searchService;
+    private DataTypeDefinition nodeRefDataType;
+
+    
+    /**
+     * @param dictionaryService
+     */
+    public void setDictionaryService(DictionaryService dictionaryService)
+    {
+        this.dictionaryService = dictionaryService;
+    }
+    
+    /**
+     * @param searchService
+     */
+    public void setSearchService(SearchService searchService)
+    {
+        this.searchService = searchService;
+    }
+    
+    /**
+     * Initialisation
+     */
+    public void afterPropertiesSet() throws Exception
+    {
+        nodeRefDataType = dictionaryService.getDataType(DataTypeDefinition.NODE_REF);
+    }
+
+    
+    /**
+     * Query for node children
+     * 
+     * @param parent  node to query children for
+     * @param typesFilter  types filter
+     * @return  children of node
+     */
+    public NodeRef[] getChildren(NodeRef parent, TypesFilter typesFilter)
+    {
+        if (typesFilter == TypesFilter.FoldersAndDocuments)
+        {
+            NodeRef[] folders = queryChildren(parent, TypesFilter.Folders);
+            NodeRef[] docs = queryChildren(parent, TypesFilter.Documents);
+            NodeRef[] foldersAndDocs = new NodeRef[folders.length + docs.length];
+            System.arraycopy(folders, 0, foldersAndDocs, 0, folders.length);
+            System.arraycopy(docs, 0, foldersAndDocs, folders.length, docs.length);
+            return foldersAndDocs;
+        }
+        else if (typesFilter == TypesFilter.Folders)
+        {
+            NodeRef[] folders = queryChildren(parent, TypesFilter.Folders);
+            return folders;
+        }
+        else if (typesFilter == TypesFilter.Documents)
+        {
+            NodeRef[] docs = queryChildren(parent, TypesFilter.Documents);
+            return docs;
+        }
+        
+        return new NodeRef[0];
+    }
+
+    /**
+     * Query children helper
+     * 
+     * NOTE: Queries for folders only or documents only
+     * 
+     * @param parent  node to query children for
+     * @param typesFilter  folders or documents
+     * @return  node children
+     */
+    private NodeRef[] queryChildren(NodeRef parent, TypesFilter typesFilter)
+    {
+        SearchParameters params = new SearchParameters();
+        params.setLanguage(SearchService.LANGUAGE_LUCENE);
+        params.addStore(parent.getStoreRef());
+        QueryParameterDefinition parentDef = new QueryParameterDefImpl(PARAM_PARENT, nodeRefDataType, true, parent.toString());
+        params.addQueryParameterDefinition(parentDef);
+        
+        if (typesFilter == TypesFilter.Folders)
+        {
+            params.setQuery(LUCENE_QUERY_SHALLOW_FOLDERS);
+        }
+        else if (typesFilter == TypesFilter.Documents)
+        {
+            params.setQuery(LUCENE_QUERY_SHALLOW_FILES);
+        }
+        
+        ResultSet resultSet = searchService.query(params);
+        try
+        {
+            List<NodeRef> results = resultSet.getNodeRefs();
+            NodeRef[] nodeRefs = new NodeRef[results.size()];
+            return results.toArray(nodeRefs);
+        }
+        finally
+        {
+            resultSet.close();
+        }
+    }
+    
+}