java.lang.Object
- org.springframework.batch.item.database.support.AbstractSqlPagingQueryProvider
- - org.springframework.batch.item.database.support.PostgresPagingQueryProvider

All Implemented Interfaces:
PagingQueryProvider
```
public class PostgresPagingQueryProvider
extends AbstractSqlPagingQueryProvider
```
Postgres implementation of a PagingQueryProvider using database specific features. When using the groupClause, this implementation expects all select fields not used in aggregate functions to be included in the groupClause (the provider does not add them for you).
Since:
2.0
Author:
Thomas Risberg, Michael Minella

Constructor Summary
Constructors
Constructor Description
PostgresPagingQueryProvider()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.String`	`generateFirstPageQuery(int pageSize)`	Method generating the query string to be used for retrieving the first page.
`java.lang.String`	`generateJumpToItemQuery(int itemIndex, int pageSize)`	Method generating the query string to be used for jumping to a specific item position.
`java.lang.String`	`generateRemainingPagesQuery(int pageSize)`	Method generating the query string to be used for retrieving the pages following the first page.

Methods inherited from class org.springframework.batch.item.database.support.AbstractSqlPagingQueryProvider
getFromClause, getGroupClause, getParameterCount, getSelectClause, getSortKeyPlaceHolder, getSortKeys, getSortKeysWithoutAliases, getWhereClause, init, isUsingNamedParameters, setFromClause, setGroupClause, setSelectClause, setSortKeys, setWhereClause

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PostgresPagingQueryProvider
```
public PostgresPagingQueryProvider()
```
- Method Detail
  - generateFirstPageQuery
```
public java.lang.String generateFirstPageQuery(int pageSize)
```
    Description copied from class: AbstractSqlPagingQueryProvider
    Method generating the query string to be used for retrieving the first page. This method must be implemented in sub classes.
    Specified by:
    generateFirstPageQuery in interface PagingQueryProvider
    Specified by:
    generateFirstPageQuery in class AbstractSqlPagingQueryProvider
    Parameters:
    pageSize - number of rows to read per page
    Returns:
    query string
  - generateRemainingPagesQuery
```
public java.lang.String generateRemainingPagesQuery(int pageSize)
```
    Description copied from class: AbstractSqlPagingQueryProvider
    Method generating the query string to be used for retrieving the pages following the first page. This method must be implemented in sub classes.
    Specified by:
    generateRemainingPagesQuery in interface PagingQueryProvider
    Specified by:
    generateRemainingPagesQuery in class AbstractSqlPagingQueryProvider
    Parameters:
    pageSize - number of rows to read per page
    Returns:
    query string
  - generateJumpToItemQuery
```
public java.lang.String generateJumpToItemQuery(int itemIndex,
                                                int pageSize)
```
    Description copied from class: AbstractSqlPagingQueryProvider
    Method generating the query string to be used for jumping to a specific item position. This method must be implemented in sub classes.
    Specified by:
    generateJumpToItemQuery in interface PagingQueryProvider
    Specified by:
    generateJumpToItemQuery in class AbstractSqlPagingQueryProvider
    Parameters:
    itemIndex - the index of the item to jump to
    pageSize - number of rows to read per page
    Returns:
    query string

Class PostgresPagingQueryProvider

Constructor Summary

Method Summary

Methods inherited from class org.springframework.batch.item.database.support.AbstractSqlPagingQueryProvider

Methods inherited from class java.lang.Object

Constructor Detail

PostgresPagingQueryProvider

Method Detail

generateFirstPageQuery

generateRemainingPagesQuery

generateJumpToItemQuery