Package javax.batch.api.partition
Class PartitionPlanImpl
java.lang.Object
javax.batch.api.partition.PartitionPlanImpl
- All Implemented Interfaces:
PartitionPlan
The PartitionPlanImpl class provides a basic implementation
of the PartitionPlan interface.
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionGets array of Partition Properties objects for Partitions.int
Gets count of Partitions.boolean
Return current value of partition override setting.int
Gets count of threads.void
setPartitionProperties
(Properties[] props) Sets array of substitution Properties objects for the set of Partitions.void
setPartitions
(int count) Set number of partitions.void
setPartitionsOverride
(boolean override) Specify whether or not to override the partition count from the previous job execution.void
setThreads
(int count) Set number of threads.
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Constructor Details
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PartitionPlanImpl
public PartitionPlanImpl()
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Method Details
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setPartitions
public void setPartitions(int count) Description copied from interface:PartitionPlan
Set number of partitions.- Specified by:
setPartitions
in interfacePartitionPlan
- Parameters:
count
- specifies the partition count
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setThreads
public void setThreads(int count) Description copied from interface:PartitionPlan
Set number of threads. Defaults to zero, which means thread count is equal to partition count.- Specified by:
setThreads
in interfacePartitionPlan
- Parameters:
count
- specifies the thread count
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setPartitionsOverride
public void setPartitionsOverride(boolean override) Description copied from interface:PartitionPlan
Specify whether or not to override the partition count from the previous job execution. This applies only to step restart. The default is false.When false is specified, the partition count from the previous job execution is used and any new value set for partition count in the current run is ignored. In addition, partition results from the previous job execution are remembered, and only incomplete partitions are reprocessed.
When true is specified, the partition count from the current run is used and all results from past partitions are discarded. Any resource cleanup or back out of work done in the previous run is the responsibility of the application. The PartitionReducer artifact's rollbackPartitionedStep method is invoked during restart before any partitions begin processing to provide a cleanup hook.
- Specified by:
setPartitionsOverride
in interfacePartitionPlan
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getPartitionsOverride
public boolean getPartitionsOverride()Description copied from interface:PartitionPlan
Return current value of partition override setting.- Specified by:
getPartitionsOverride
in interfacePartitionPlan
- Returns:
- override setting.
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setPartitionProperties
Description copied from interface:PartitionPlan
Sets array of substitution Properties objects for the set of Partitions.- Specified by:
setPartitionProperties
in interfacePartitionPlan
- Parameters:
props
- specifies the Properties object array
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getPartitions
public int getPartitions()Description copied from interface:PartitionPlan
Gets count of Partitions.- Specified by:
getPartitions
in interfacePartitionPlan
- Returns:
- Partition count
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getThreads
public int getThreads()Description copied from interface:PartitionPlan
Gets count of threads.- Specified by:
getThreads
in interfacePartitionPlan
- Returns:
- thread count
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getPartitionProperties
Description copied from interface:PartitionPlan
Gets array of Partition Properties objects for Partitions.- Specified by:
getPartitionProperties
in interfacePartitionPlan
- Returns:
- Partition Properties object array
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