/*
 * 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.tuscany.nosqldatastore.cassandra;

import me.prettyprint.cassandra.service.ThriftKsDef;
import me.prettyprint.hector.api.Cluster;
import me.prettyprint.hector.api.Keyspace;
import me.prettyprint.hector.api.ddl.KeyspaceDefinition;
import me.prettyprint.hector.api.exceptions.HInvalidRequestException;
import me.prettyprint.hector.api.factory.HFactory;
import org.apache.tuscany.nosqldatastore.Database;
import org.apache.tuscany.nosqldatastore.Group;

class CassandraDatabase implements Database {
	
	private Keyspace keyspace;
	private Cluster cluster;
	
	CassandraDatabase(String databaseName, Cluster cluster) {
        try{            
            KeyspaceDefinition ksDef = new ThriftKsDef(databaseName, "org.apache.cassandra.locator.SimpleStrategy", 1, null);
            cluster.addKeyspace(ksDef);
        }catch (HInvalidRequestException e){
            System.out.println("Connect to the existing database...");
        }
		this.keyspace = HFactory.createKeyspace(databaseName, cluster);
		this.cluster = cluster;
	}

	public Group createGroup(String groupId) {
		CassandraGroup group = new CassandraGroup(groupId, keyspace, cluster);
		return group;
	}

    public Group getGroup(String groupId) {
		return createGroup(groupId);
    }


    public void deleteGroup(String key) {
		cluster.dropColumnFamily(keyspace.getKeyspaceName(), key);
	}

}