Created
June 22, 2016 07:22
-
-
Save alkagin/d74b27dd34368ddb9965389e852366ca to your computer and use it in GitHub Desktop.
CassandraResultSetSink
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* | |
* 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.flink.streaming.connectors.cassandra; | |
import com.datastax.driver.core.PreparedStatement; | |
import com.datastax.driver.core.ResultSet; | |
import com.google.common.util.concurrent.ListenableFuture; | |
import org.apache.flink.configuration.Configuration; | |
public abstract class CassandraResultSetSink<IN> extends CassandraSinkBase<IN, ResultSet> { | |
private final String insertQuery; | |
private transient PreparedStatement ps; | |
public CassandraResultSetSink(String insertQuery, ClusterBuilder builder) { | |
super(builder); | |
this.insertQuery = insertQuery; | |
} | |
@Override | |
public void open(Configuration configuration) { | |
super.open(configuration); | |
this.ps = session.prepare(insertQuery); | |
} | |
@Override | |
public ListenableFuture<ResultSet> send(IN value) { | |
Object[] fields = extract(value); | |
return session.executeAsync(ps.bind(fields)); | |
} | |
abstract Object[] extract(IN record); | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment