. Rhino JavaScript integration checkpoint:

- Added a new action to the repository for executing JavaScript files
  - Added script action UI to rule framework, means we can execute a JavaScript file as part of a rule
  - Lucene search and Saved Search functionality added to default data-model for scripts
  - Added Scripts folder to Data Dictionary (created during bootstrap)
  - Created patch to add the Scripts folder to existing schemas
  - Added ScriptService to ServiceRegistry bean

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2740 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/jscript/Search.java

@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2005 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific
+ * language governing permissions and limitations under the
+ * License.
+ */
+package org.alfresco.repo.jscript;
+
+import java.io.StringReader;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.alfresco.error.AlfrescoRuntimeException;
+import org.alfresco.model.ContentModel;
+import org.alfresco.service.ServiceRegistry;
+import org.alfresco.service.cmr.repository.ContentReader;
+import org.alfresco.service.cmr.repository.NodeRef;
+import org.alfresco.service.cmr.repository.StoreRef;
+import org.alfresco.service.cmr.repository.TemplateImageResolver;
+import org.alfresco.service.cmr.repository.TemplateNode;
+import org.alfresco.service.cmr.search.ResultSet;
+import org.alfresco.service.cmr.search.ResultSetRow;
+import org.alfresco.service.cmr.search.SearchService;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.dom4j.Document;
+import org.dom4j.Element;
+import org.dom4j.io.SAXReader;
+
+/**
+ * Search component for use by the ScriptService.
+ * <p>
+ * Provides access to Lucene search facilities including saved search objects. The results
+ * from a search are returned as an array (collection) of scriptable Node wrapper objects.
+ * <p>
+ * The object is added to the root of the model to provide syntax such as:
+ * <code>var results = search.luceneSearch(statement);</code>
+ * and
+ * <code>var results = search.savedSearch(node);</code>
+ * 
+ * @author Kevin Roast
+ */
+public final class Search
+{
+    private static Log logger = LogFactory.getLog(Search.class);
+    
+    private ServiceRegistry services;
+    private StoreRef storeRef;
+    private TemplateImageResolver imageResolver;
+    
+    
+    /**
+     * Constructor
+     * 
+     * @param services      The ServiceRegistry to use
+     */
+    public Search(ServiceRegistry services, StoreRef storeRef, TemplateImageResolver imageResolver)
+    {
+        this.services = services;
+        this.storeRef = storeRef;
+        this.imageResolver = imageResolver;
+    }
+    
+    /**
+     * Execute a Lucene search
+     * 
+     * @param search        Lucene search string to execute
+     * 
+     * @return Node[] of results from the search - can be empty but not null
+     */
+    public Node[] luceneSearch(String search)
+    {
+        return query(search);
+    }
+    
+    /**
+     * Execute a saved Lucene search
+     * 
+     * @param savedSearch   Node that contains the saved lucene search content
+     * 
+     * @return Node[] of results from the search - can be empty but not null
+     */
+    public Node[] savedSearch(Node savedSearch)
+    {
+        String search = null;
+        
+        // read the Saved Search XML on the specified node - and get the Lucene search from it
+        try
+        {
+            ContentReader content = this.services.getContentService().getReader(
+                    savedSearch.getNodeRef(), ContentModel.PROP_CONTENT);
+            if (content != null && content.exists())
+            {
+                // get the root element
+                SAXReader reader = new SAXReader();
+                Document document = reader.read(new StringReader(content.getContentString()));
+                Element rootElement = document.getRootElement();
+                
+                Element queryElement = rootElement.element("query");
+                if (queryElement != null)
+                {
+                    search = queryElement.getText();
+                }
+            }
+        }
+        catch (Throwable err)
+        {
+            throw new AlfrescoRuntimeException("Failed to find or load saved Search: " + savedSearch.getNodeRef(), err);
+        }
+        
+        return search != null ? query(search) : new Node[0];
+    }
+    
+    private Node[] query(String search)
+    {
+        Node[] nodes = null;
+        
+        // perform the search against the repo
+        ResultSet results = null;
+        try
+        {
+            results = this.services.getSearchService().query(
+                      this.storeRef,
+                      SearchService.LANGUAGE_LUCENE,
+                      search);
+            
+            if (results.length() != 0)
+            {
+                nodes = new Node[results.length()];
+                int count = 0;
+                for (ResultSetRow row: results)
+                {
+                    NodeRef nodeRef = row.getNodeRef();
+                    nodes[count++] = new Node(nodeRef, services, this.imageResolver);
+                }
+            }
+        }
+        catch (Throwable err)
+        {
+            throw new AlfrescoRuntimeException("Failed to execute search: " + search, err);
+        }
+        finally
+        {
+            if (results != null)
+            {
+                results.close();
+            }
+        }
+        
+        return nodes != null ? nodes : new Node[0];
+    }
+}