/
StreamBatchResetter.java
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/
StreamBatchResetter.java
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/*
* Copyright 2013, 2014 Deutsche Nationalbibliothek
*
* 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.metafacture.flowcontrol;
import org.metafacture.framework.FluxCommand;
import org.metafacture.framework.StreamReceiver;
import org.metafacture.framework.annotations.Description;
import org.metafacture.framework.annotations.In;
import org.metafacture.framework.annotations.Out;
import org.metafacture.framework.helpers.ForwardingStreamPipe;
/**
* Resets Stream every {@code batchSize} records.
*
* @author Markus Michael Geipel
* @author Christoph Böhme
*/
@Description("Resets flow for every BATCHSIZE records.")
@In(StreamReceiver.class)
@Out(StreamReceiver.class)
@FluxCommand("batch-reset")
public final class StreamBatchResetter extends ForwardingStreamPipe {
public static final long DEFAULT_BATCH_SIZE = 1000;
private long batchSize = DEFAULT_BATCH_SIZE;
private long recordCount;
private long batchCount;
/**
* Creates an instance of {@link StreamBatchResetter}.
*/
public StreamBatchResetter() {
}
/**
* Sets the size of the batch.
*
* @param batchSize the size of the batch
*/
public void setBatchSize(final int batchSize) {
this.batchSize = batchSize;
}
/**
* Gets the size of the batch.
*
* @return the size of the batch
*/
public long getBatchSize() {
return batchSize;
}
/**
* Gets the batch count.
*
* @return the number of counted batches.
*/
public long getBatchCount() {
return batchCount;
}
/**
* Gets the record count.
*
* @return the number of counted records
*/
public long getRecordCount() {
return recordCount;
}
@Override
public void endRecord() {
getReceiver().endRecord();
++recordCount;
recordCount %= batchSize;
if (recordCount == 0) {
++batchCount;
getReceiver().resetStream();
}
}
@Override
protected void onResetStream() {
recordCount = 0;
batchCount = 0;
}
}