/*
 * 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.phoenix.query;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.client.HConnection;
import org.apache.hadoop.hbase.client.HConnectionManager;

/**
 * Factory for creating {@link HConnection}
 *
 * 
 */
public interface HConnectionFactory {

    /**
     * Creates HConnection to access HBase clusters.
     * 
     * @param configuration object
     * @return A HConnection instance
     */
    HConnection createConnection(Configuration conf) throws IOException;

    /**
     * Default implementation.  Uses standard HBase HConnections.
     */
    static class HConnectionFactoryImpl implements HConnectionFactory {
        @Override
        public HConnection createConnection(Configuration conf) throws IOException {
            return HConnectionManager.createConnection(conf);
        }
    }
}