/**
* Copyright 2007 The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.hadoop.hbase.hql;
import java.io.Writer;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.hql.generated.HQLParser;
import org.apache.hadoop.hbase.hql.generated.ParseException;
import org.apache.hadoop.hbase.hql.generated.TokenMgrError;
public class HQLClient {
public static String MASTER_ADDRESS = null;
static HBaseConfiguration conf;
static TableFormatter tableFormater;
static Writer out;
public HQLClient(HBaseConfiguration config, String master, Writer output,
TableFormatter formatter) {
conf = config;
out = output;
tableFormater = formatter;
MASTER_ADDRESS = master;
}
public ReturnMsg executeQuery(String query) {
HQLParser parser = new HQLParser(query, out, tableFormater);
ReturnMsg rs = null;
try {
Command cmd = parser.terminatedCommand();
if (cmd != null) {
rs = cmd.execute(conf);
}
} catch (ParseException pe) {
String[] msg = pe.getMessage().split("[\n]");
rs = new ReturnMsg(-9, "Syntax error : Type 'help;' for usage.\nMessage : " + msg[0]);
} catch (TokenMgrError te) {
String[] msg = te.getMessage().split("[\n]");
rs = new ReturnMsg(-9, "Lexical error : Type 'help;' for usage.\nMessage : " + msg[0]);
}
return rs;
}
}