phoenix-core/src/it/java/org/apache/phoenix/end2end/ConnectionQueryServicesTestImpl.java

/*
 * 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.end2end;

import java.sql.SQLException;
import java.util.Properties;

import org.apache.phoenix.jdbc.PhoenixEmbeddedDriver.ConnectionInfo;
import org.apache.phoenix.query.ConnectionQueryServicesImpl;
import org.apache.phoenix.query.QueryServices;

/**
 * 
 * Implementation of ConnectionQueryServices for tests running against
 * the mini cluster
 *
 * 
 * @since 0.1
 */
public class ConnectionQueryServicesTestImpl extends ConnectionQueryServicesImpl {
    protected int NUM_SLAVES_BASE = 1; // number of slaves for the cluster
    
    public ConnectionQueryServicesTestImpl(QueryServices services, ConnectionInfo info) throws SQLException {
        super(services, info, null);
    }
    
    @Override
    public void init(String url, Properties props) throws SQLException {
        try {
            super.init(url, props);
            /**
             * Clear the server-side meta data cache on initialization. Otherwise, if we
             * query for meta data tables, we'll get nothing (since the server just came
             * up). However, our server-side cache (which is a singleton) will claim
             * that we do have tables and our create table calls will return the cached
             * meta data instead of creating new metadata.
             */
            clearCache();
        } catch (SQLException e) {
            throw e;
        } catch (Exception e) {
            throw new SQLException(e);
        }
    }

    @Override
    public void close() throws SQLException {
        try {
            // Attempt to fix apparent memory leak...
            clearCache();
        } finally {
            super.close();
        }
    }
}