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/*
* 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.exceptions.HectorException;
import me.prettyprint.hector.api.factory.HFactory;
import org.apache.tuscany.nosqldatastore.Database;
import org.apache.tuscany.nosqldatastore.Group;
import org.apache.tuscany.nosqldatastore.exception.GroupNotFoundException;
class CassandraDatabase implements Database {
private Keyspace keyspace;
private Cluster cluster;
CassandraDatabase(String databaseName, Cluster cluster) throws HectorException{
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) {
Group group = new CassandraGroup(groupId, keyspace, cluster);
return group;
}
public Group getGroup(String groupId) {
Group group = createGroup(groupId);
return group;
}
public void deleteGroup(String groupId) throws GroupNotFoundException {
try{
cluster.dropColumnFamily(keyspace.getKeyspaceName(), groupId);
} catch(HInvalidRequestException e){
throw new GroupNotFoundException("Group does not exists "+groupId);
}
}
}
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