org.grails.datastore.mapping.cassandra.CassandraDatastore.java Source code

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Here is the source code for org.grails.datastore.mapping.cassandra.CassandraDatastore.java

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/* Copyright (C) 2010 SpringSource
 *
 * Licensed 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.grails.datastore.mapping.cassandra;

import java.util.Map;

import me.prettyprint.cassandra.service.CassandraClient;
import me.prettyprint.cassandra.service.CassandraClientPool;
import me.prettyprint.cassandra.service.CassandraClientPoolFactory;

import org.springframework.dao.DataAccessResourceFailureException;
import org.grails.datastore.mapping.core.AbstractDatastore;
import org.grails.datastore.mapping.core.Session;
import org.grails.datastore.mapping.keyvalue.mapping.KeyValueMappingContext;
import org.grails.datastore.mapping.model.MappingContext;

/**
 * @author Graeme Rocher
 * @since 1.0
 */
public class CassandraDatastore extends AbstractDatastore {
    public static final String DEFAULT_KEYSPACE = "Keyspace1";
    private CassandraClientPool connectionPool;

    public CassandraDatastore(MappingContext mappingContext) {
        super(mappingContext);
        this.connectionPool = CassandraClientPoolFactory.INSTANCE.get();
    }

    public CassandraDatastore() {
        this(new KeyValueMappingContext(DEFAULT_KEYSPACE));
    }

    @Override
    protected Session createSession(@SuppressWarnings("hiding") Map<String, String> connectionDetails) {
        final CassandraClient client;
        try {
            client = connectionPool.borrowClient("localhost", 9160);
            return new CassandraSession(this, getMappingContext(), connectionPool, client);
        } catch (Exception e) {
            throw new DataAccessResourceFailureException(
                    "Failed to obtain Cassandra client session: " + e.getMessage(), e);
        }
    }
}