org.springframework.jdbc.support.incrementer
Class HsqlSequenceMaxValueIncrementer

java.lang.Object
  org.springframework.jdbc.support.incrementer.AbstractDataFieldMaxValueIncrementer
      org.springframework.jdbc.support.incrementer.AbstractSequenceMaxValueIncrementer
          org.springframework.jdbc.support.incrementer.HsqlSequenceMaxValueIncrementer

All Implemented Interfaces:

InitializingBean, DataFieldMaxValueIncrementer

public class HsqlSequenceMaxValueIncrementer
extends AbstractSequenceMaxValueIncrementer

DataFieldMaxValueIncrementer that retrieves the next value of a given HSQL sequence. Thanks to Guillaume Bilodeau for the suggestion!

NOTE: This is an alternative to using a regular table to support generating unique keys that was necessary in previous versions of HSQL.

Since:

2.5

Author:

Thomas Risberg

See Also:

HsqlMaxValueIncrementer

Field Summary

Fields inherited from class org.springframework.jdbc.support.incrementer.AbstractDataFieldMaxValueIncrementer

paddingLength

Constructor Summary

HsqlSequenceMaxValueIncrementer()
Default constructor for bean property style usage.

HsqlSequenceMaxValueIncrementer(DataSource dataSource, String incrementerName)
Convenience constructor.

Method Summary

protected String

getSequenceQuery() Return the database-specific query to use for retrieving a sequence value.

Methods inherited from class org.springframework.jdbc.support.incrementer.AbstractSequenceMaxValueIncrementer

getNextKey

Methods inherited from class org.springframework.jdbc.support.incrementer.AbstractDataFieldMaxValueIncrementer

afterPropertiesSet, getDataSource, getIncrementerName, getPaddingLength, nextIntValue, nextLongValue, nextStringValue, setDataSource, setIncrementerName, setPaddingLength

Methods inherited from class java.lang.Object

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

Constructor Detail

HsqlSequenceMaxValueIncrementer

public HsqlSequenceMaxValueIncrementer()

Default constructor for bean property style usage.

See Also:

AbstractDataFieldMaxValueIncrementer.setDataSource(javax.sql.DataSource), AbstractDataFieldMaxValueIncrementer.setIncrementerName(java.lang.String)

HsqlSequenceMaxValueIncrementer

public HsqlSequenceMaxValueIncrementer(DataSource dataSource,
                                       String incrementerName)

Convenience constructor.

Parameters:

dataSource - the DataSource to use

incrementerName - the name of the sequence/table to use

Method Detail

getSequenceQuery

protected String getSequenceQuery()

Description copied from class: AbstractSequenceMaxValueIncrementer

Return the database-specific query to use for retrieving a sequence value.

The provided SQL is supposed to result in a single row with a single column that allows for extracting a long value.

Specified by:

getSequenceQuery in class AbstractSequenceMaxValueIncrementer