org.springframework.batch.item.database.support
Class DerbyPagingQueryProvider

java.lang.Object
  org.springframework.batch.item.database.support.AbstractSqlPagingQueryProvider
      org.springframework.batch.item.database.support.SqlWindowingPagingQueryProvider
          org.springframework.batch.item.database.support.DerbyPagingQueryProvider

All Implemented Interfaces:

PagingQueryProvider

public class DerbyPagingQueryProvider
extends SqlWindowingPagingQueryProvider

Derby implementation of a PagingQueryProvider using standard SQL:2003 windowing functions. These features are supported starting with Apache Derby version 10.4.1.3. As the OVER() function does not support the ORDER BY clause a sub query is instead used to order the results before the ROW_NUM restriction is applied

Since:

2.0

Author:

Thomas Risberg, David Thexton

Constructor Summary

DerbyPagingQueryProvider()

Method Summary

protected String	getOverClause()
protected String	getOverSubstituteClauseEnd()
protected String	getOverSubstituteClauseStart()
void	init(DataSource dataSource) Check mandatory properties.

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

extractTableAlias, generateFirstPageQuery, generateJumpToItemQuery, generateRemainingPagesQuery, getSubQueryAlias

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

getFromClause, getParameterCount, getSelectClause, getSortKey, getSortKeyPlaceHolder, getSortKeyWithoutAlias, getWhereClause, isAscending, isUsingNamedParameters, setAscending, setFromClause, setSelectClause, setSortKey, setWhereClause

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DerbyPagingQueryProvider

public DerbyPagingQueryProvider()

Method Detail

init

public void init(DataSource dataSource)
          throws Exception

Description copied from class: AbstractSqlPagingQueryProvider

Check mandatory properties.

Specified by:

init in interface PagingQueryProvider

Overrides:

init in class AbstractSqlPagingQueryProvider

Parameters:

dataSource - DataSource to use for any initialization

Throws:

Exception

See Also:

InitializingBean.afterPropertiesSet()

getOverClause

protected String getOverClause()

Overrides:

getOverClause in class SqlWindowingPagingQueryProvider

getOverSubstituteClauseStart

protected String getOverSubstituteClauseStart()

Overrides:

getOverSubstituteClauseStart in class SqlWindowingPagingQueryProvider

getOverSubstituteClauseEnd

protected String getOverSubstituteClauseEnd()

Overrides:

getOverSubstituteClauseEnd in class SqlWindowingPagingQueryProvider