/**
* 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.drill.jdbc;
import net.hydromatic.linq4j.function.Function0;
import net.hydromatic.optiq.jdbc.DriverVersion;
import net.hydromatic.optiq.jdbc.Handler;
import net.hydromatic.optiq.jdbc.OptiqPrepare;
import net.hydromatic.optiq.jdbc.UnregisteredDriver;
import org.apache.drill.exec.client.DrillClient;
import org.apache.drill.optiq.DrillPrepareImpl;
/**
* JDBC driver for Apache Drill.
*/
public class Driver extends UnregisteredDriver {
public static final String CONNECT_STRING_PREFIX = "jdbc:drill:";
private volatile DrillHandler handler;
static {
new Driver().register();
}
protected String getConnectStringPrefix() {
return CONNECT_STRING_PREFIX;
}
protected DriverVersion createDriverVersion() {
return new DrillDriverVersion();
}
@Override
protected Function0<OptiqPrepare> createPrepareFactory() {
return new Function0<OptiqPrepare>() {
@Override
public OptiqPrepare apply() {
return new DrillPrepareImpl(Driver.this);
}
};
}
public DrillClient getClient(){
return handler.getClient();
}
@Override
protected Handler createHandler() {
this.handler = new DrillHandler(false);
return handler;
}
}
// End Driver.java