/*
* Copyright 2008-2009 LinkedIn, Inc
*
* 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 voldemort.store.readonly.mr.serialization;
import java.io.Closeable;
import java.io.IOException;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.JobConfigurable;
import voldemort.serialization.json.JsonTypeSerializer;
import azkaban.common.utils.Utils;
/**
* Base class for a JsonMapper or JsonReducer with a few basic fields
*
* @author jkreps
*
*/
public abstract class JsonConfigurable implements JobConfigurable, Closeable {
private volatile boolean _isConfigured = false;
private JsonTypeSerializer _inputKeySerializer;
private JsonTypeSerializer _inputValueSerializer;
private JsonTypeSerializer _outputKeySerializer;
private JsonTypeSerializer _outputValueSerializer;
public void close() throws IOException {
}
public JsonTypeSerializer getInputKeySerializer() {
return _inputKeySerializer;
}
public JsonTypeSerializer getInputValueSerializer() {
return _inputValueSerializer;
}
public JsonTypeSerializer getOutputKeySerializer() {
return _outputKeySerializer;
}
public JsonTypeSerializer getOutputValueSerializer() {
return _outputValueSerializer;
}
protected void setInputKeySerializer(JsonTypeSerializer inputKeySerializer) {
_inputKeySerializer = Utils.nonNull(inputKeySerializer);
}
protected void setInputValueSerializer(JsonTypeSerializer inputValueSerializer) {
_inputValueSerializer = Utils.nonNull(inputValueSerializer);
}
protected void setOutputKeySerializer(JsonTypeSerializer outputKeySerializer) {
_outputKeySerializer = Utils.nonNull(outputKeySerializer);
}
protected void setOutputValueSerializer(JsonTypeSerializer outputValueSerializer) {
_outputValueSerializer = Utils.nonNull(outputValueSerializer);
}
protected void setConfigured(boolean isConfigured) {
_isConfigured = isConfigured;
}
public boolean isConfigured() {
return _isConfigured;
}
protected JsonTypeSerializer getSchemaFromJob(JobConf conf, String key) {
if(conf.get(key) == null)
throw new IllegalArgumentException("Missing required parameter '" + key + "' on job.");
return new JsonTypeSerializer(conf.get(key));
}
}