Spring Framework

org.springframework.jdbc.support.incrementer
Class HsqlSequenceMaxValueIncrementer

java.lang.Object
  extended by org.springframework.jdbc.support.incrementer.AbstractDataFieldMaxValueIncrementer
      extended by org.springframework.jdbc.support.incrementer.AbstractSequenceMaxValueIncrementer
          extended by 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(javax.sql.DataSource dataSource, java.lang.String incrementerName)
          Convenience constructor.
 
Method Summary
protected  java.lang.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(javax.sql.DataSource dataSource,
                                       java.lang.String incrementerName)
Convenience constructor.

Parameters:
dataSource - the DataSource to use
incrementerName - the name of the sequence/table to use
Method Detail

getSequenceQuery

protected java.lang.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

Spring Framework