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BATCH-2062: Added ChunkProcessor implementations to support JSR-352's chunking pattern

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* Added the JsrChunkProvider implementation - a no-op ChunkProvider implementation to be used by the ChunkOrientedTasklet
* Added the JsrChunkProcessor - A simple implementation of a ChunkProcessor that handles the JSR-352 chunking pattern (read and process loop with a single write per chunk).
* Added the JsrFaultTolerantChunkProcessor - A ChunkProcessor that implements chunking the way JSR-352 requires as well as adding skip/retry functionality.
* Added builders to support the above functionality.
This commit is contained in:
Michael Minella
2013-08-06 12:07:34 -05:00
parent eb2b39b412
commit b8479493bd
17 changed files with 2493 additions and 544 deletions
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53
spring-batch-infrastructure/src/main/java/org/springframework/batch/jsr/repeat/CheckpointAlgorithmAdapter.java
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@@ -1,12 +1,36 @@
/*
* Copyright 2013 the original author or authors.
*
* 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.springframework.batch.jsr.repeat;
import javax.batch.api.chunk.CheckpointAlgorithm;
import javax.batch.operations.BatchRuntimeException;
import org.springframework.batch.repeat.CompletionPolicy;
import org.springframework.batch.repeat.RepeatContext;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.util.Assert;
/**
* Wrapper for the {@link CheckpointAlgorithm} to be used via the rest
* of the framework.
*
* @author Michael Minella
* @see CheckpointAlgorithm
* @see CompletionPolicy
*/
public class CheckpointAlgorithmAdapter implements CompletionPolicy {
private CheckpointAlgorithm policy;
@@ -17,39 +41,50 @@ public class CheckpointAlgorithmAdapter implements CompletionPolicy {
this.policy = policy;
}
/* (non-Javadoc)
* @see org.springframework.batch.repeat.CompletionPolicy#isComplete(org.springframework.batch.repeat.RepeatContext, org.springframework.batch.repeat.RepeatStatus)
*/
@Override
public boolean isComplete(RepeatContext context, RepeatStatus result) {
try {
return policy.isReadyToCheckpoint();
} catch (Exception e) {
//TODO: do something here
throw new BatchRuntimeException(e);
}
return false;
}
/* (non-Javadoc)
* @see org.springframework.batch.repeat.CompletionPolicy#isComplete(org.springframework.batch.repeat.RepeatContext)
*/
@Override
public boolean isComplete(RepeatContext context) {
try {
return policy.isReadyToCheckpoint();
} catch (Exception e) {
//TODO: do something here
throw new BatchRuntimeException(e);
}
return false;
}
/* (non-Javadoc)
* @see org.springframework.batch.repeat.CompletionPolicy#start(org.springframework.batch.repeat.RepeatContext)
*/
@Override
public RepeatContext start(RepeatContext parent) {
try {
policy.beginCheckpoint();
} catch (Exception e) {
//TODO: do something here
throw new BatchRuntimeException(e);
}
return null;
return parent;
}
/**
* If {@link CheckpointAlgorithm#isReadyToCheckpoint()} is true
* we will call {@link CheckpointAlgorithm#endCheckpoint()}
*
* @param context a {@link RepeatContext}
*/
@Override
public void update(RepeatContext context) {
try {
@@ -57,7 +92,7 @@ public class CheckpointAlgorithmAdapter implements CompletionPolicy {
policy.endCheckpoint();
}
} catch (Exception e) {
//TODO: do something here
throw new BatchRuntimeException(e);
}
}
}