java.lang.Object
- org.springframework.batch.core.partition.support.AbstractPartitionHandler

所有已实现的接口:
PartitionHandler
直接已知子类:
TaskExecutorPartitionHandler
```
public abstract class AbstractPartitionHandler
extends java.lang.Object
implements PartitionHandler
```
Base PartitionHandler implementation providing common base features. Subclasses are expected to implement only the doHandle(org.springframework.batch.core.StepExecution, java.util.Set) method which returns with the result of the execution(s) or an exception if the step failed to process.
作者:
Sebastien Gerard, Dave Syer

构造器概要
构造器
构造器说明
AbstractPartitionHandler()

方法概要

所有方法实例方法抽象方法具体方法
修饰符和类型	方法	说明
`protected abstract java.util.Set<StepExecution>`	`doHandle(StepExecution masterStepExecution, java.util.Set<StepExecution> partitionStepExecutions)`	Executes the specified `StepExecution` instances and returns an updated view of them.
`int`	`getGridSize()`	Returns the number of step executions.
`java.util.Collection<StepExecution>`	`handle(StepExecutionSplitter stepSplitter, StepExecution masterStepExecution)`	Main entry point for `PartitionHandler` interface.
`void`	`setGridSize(int gridSize)`	Passed to the `StepExecutionSplitter` in the `handle(StepExecutionSplitter, StepExecution)` method, instructing it how many `StepExecution` instances are required, ideally.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - AbstractPartitionHandler
```
public AbstractPartitionHandler()
```
- 方法详细资料
  - doHandle
```
protected abstract java.util.Set<StepExecution> doHandle(StepExecution masterStepExecution,
                                                         java.util.Set<StepExecution> partitionStepExecutions)
                                                  throws java.lang.Exception
```
    Executes the specified StepExecution instances and returns an updated view of them. Throws an Exception if anything goes wrong.
    参数:
    masterStepExecution - the whole partition execution
    partitionStepExecutions - the StepExecution instances to execute
    返回:
    an updated view of these completed StepExecution instances
    抛出:
    java.lang.Exception - if anything goes wrong. This allows implementations to be liberal and rely on the caller to translate an exception into a step failure as necessary.
  - handle
```
public java.util.Collection<StepExecution> handle(StepExecutionSplitter stepSplitter,
                                                  StepExecution masterStepExecution)
                                           throws java.lang.Exception
```
    从接口复制的说明: PartitionHandler
    Main entry point for PartitionHandler interface. The splitter creates all the executions that need to be farmed out, along with their input parameters (in the form of their ExecutionContext). The master step execution is used to identify the partition and group together the results logically.
    指定者:
    handle 在接口中 PartitionHandler
    参数:
    stepSplitter - a strategy for generating a collection of StepExecution instances
    masterStepExecution - the master step execution for the whole partition
    返回:
    a collection of completed StepExecution instances
    抛出:
    java.lang.Exception - if anything goes wrong. This allows implementations to be liberal and rely on the caller to translate an exception into a step failure as necessary.
    另请参阅:
    PartitionHandler.handle(StepExecutionSplitter, StepExecution)
  - getGridSize
```
public int getGridSize()
```
    Returns the number of step executions.
    返回:
    the number of step executions
  - setGridSize
```
public void setGridSize(int gridSize)
```
    Passed to the StepExecutionSplitter in the handle(StepExecutionSplitter, StepExecution) method, instructing it how many StepExecution instances are required, ideally. The StepExecutionSplitter is allowed to ignore the grid size in the case of a restart, since the input data partitions must be preserved.
    参数:
    gridSize - the number of step executions that will be created

类 AbstractPartitionHandler

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

AbstractPartitionHandler

方法详细资料

doHandle

handle

getGridSize

setGridSize