/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
*
* CVS $Id: Query.java,v 1.11 2004/02/24 03:20:27 vgritsenko Exp $
*/
package org.apache.xindice.server.rpc.messages;
import org.apache.xindice.core.Collection;
import org.apache.xindice.core.data.NodeSet;
import org.apache.xindice.core.query.QueryUtil;
import org.apache.xindice.server.rpc.RPCDefaultMessage;
import org.apache.xindice.xml.NamespaceMap;
import java.util.Enumeration;
import java.util.Hashtable;
/**
* Executes a query against a document or collection
*
* @version CVS $Revision: 1.11 $, $Date: 2004/02/24 03:20:27 $
*/
public class Query extends RPCDefaultMessage {
public Hashtable execute(Hashtable message) throws Exception {
if (!message.containsKey(COLLECTION)) {
throw new Exception(MISSING_COLLECTION_PARAM);
}
final String type = (String) message.get(TYPE);
if (type == null) {
throw new Exception(MISSING_TYPE_PARAM);
}
final String query = (String) message.get(QUERY);
if (query == null) {
throw new Exception(MISSING_QUERY_PARAM);
}
Collection col = getCollection((String) message.get(COLLECTION));
NamespaceMap nsMap = QueryUtil.mapNamespaces((Hashtable) message.get(NAMESPACES));
NodeSet ns;
if (message.containsKey(NAME)) {
ns = col.queryDocument(type, query, nsMap, message.get(NAME));
} else {
ns = col.queryCollection(type, query, nsMap);
}
Hashtable result = new Hashtable();
result.put(RESULT, QueryUtil.queryResultsToString(ns));
return result;
}
}