ColumnRangePartitioner (Spring Batch 4.1.4.RELEASE API)

java.lang.Object
- org.springframework.batch.sample.common.ColumnRangePartitioner

所有已实现的接口:
Partitioner
```
public class ColumnRangePartitioner
extends java.lang.Object
implements Partitioner
```
Simple minded partitioner for a range of values of a column in a database table. Works best if the values are uniformly distributed (e.g. auto-generated primary key values).
作者:
Dave Syer

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

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`java.util.Map<java.lang.String,ExecutionContext>`	`partition(int gridSize)`	Partition a database table assuming that the data in the column specified are uniformly distributed.
`void`	`setColumn(java.lang.String column)`	The name of the column to partition.
`void`	`setDataSource(javax.sql.DataSource dataSource)`	The data source for connecting to the database.
`void`	`setTable(java.lang.String table)`	The name of the SQL table the data are in.

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
  - ColumnRangePartitioner
```
public ColumnRangePartitioner()
```
- 方法详细资料
  - setTable
```
public void setTable(java.lang.String table)
```
    The name of the SQL table the data are in.
    参数:
    table - the name of the table
  - setColumn
```
public void setColumn(java.lang.String column)
```
    The name of the column to partition.
    参数:
    column - the column name.
  - setDataSource
```
public void setDataSource(javax.sql.DataSource dataSource)
```
    The data source for connecting to the database.
    参数:
    dataSource - a DataSource
  - partition
```
public java.util.Map<java.lang.String,ExecutionContext> partition(int gridSize)
```
    Partition a database table assuming that the data in the column specified are uniformly distributed. The execution context values will have keys minValue and maxValue specifying the range of values to consider in each partition.
    指定者:
    partition 在接口中 Partitioner
    参数:
    gridSize - the size of the map to return
    返回:
    a map from identifier to input parameters
    另请参阅:
    Partitioner.partition(int)