/**
* 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.cassandra.cql.driver;
import org.apache.cassandra.cql.compiler.common.*;
import org.apache.cassandra.cql.compiler.parse.*;
import org.apache.cassandra.cql.compiler.sem.*;
import org.apache.cassandra.cql.common.*;
import org.apache.thrift.*;
import org.apache.cassandra.cql.common.CqlResult;
import org.apache.cassandra.cql.common.Plan;
import org.apache.cassandra.cql.compiler.common.CqlCompiler;
import org.apache.cassandra.cql.compiler.parse.ParseException;
import org.apache.cassandra.cql.compiler.sem.SemanticException;
import org.apache.cassandra.utils.LogUtil;
import org.apache.log4j.Logger;
// Server side driver class for CQL
public class CqlDriver
{
private final static Logger logger_ = Logger.getLogger(CqlDriver.class);
// Execute a CQL Statement
public static CqlResult executeQuery(String query) throws TException
{
CqlCompiler compiler = new CqlCompiler();
try
{
logger_.debug("Compiling CQL query ...");
Plan plan = compiler.compileQuery(query);
if (plan != null)
{
logger_.debug("Executing CQL query ...");
return plan.execute();
}
}
catch (Exception e)
{
CqlResult result = new CqlResult(null);
result.errorTxt = e.getMessage();
Class<? extends Exception> excpClass = e.getClass();
if ((excpClass != SemanticException.class)
&& (excpClass != ParseException.class)
&& (excpClass != RuntimeException.class))
{
result.errorTxt = "CQL Internal Error: " + result.errorTxt;
result.errorCode = 1; // failure
logger_.error(LogUtil.throwableToString(e));
}
return result;
}
return null;
}
}