org.springframework.jdbc.support.incrementer
Class SybaseAnywhereMaxValueIncrementer

java.lang.Object
  org.springframework.jdbc.support.incrementer.AbstractDataFieldMaxValueIncrementer
      org.springframework.jdbc.support.incrementer.AbstractColumnMaxValueIncrementer
          org.springframework.jdbc.support.incrementer.SybaseMaxValueIncrementer
              org.springframework.jdbc.support.incrementer.SybaseAnywhereMaxValueIncrementer

All Implemented Interfaces:

InitializingBean, DataFieldMaxValueIncrementer

public class SybaseAnywhereMaxValueIncrementer
extends SybaseMaxValueIncrementer

DataFieldMaxValueIncrementer that increments the maximum value of a given Sybase SQL Anywhere table with the equivalent of an auto-increment column. Note: If you use this class, your table key column should NOT be defined as an IDENTITY column, as the sequence table does the job.

This class is intended to be used with Sybase Anywhere.

The sequence is kept in a table. There should be one sequence table per table that needs an auto-generated key.

Example:

 create table tab (id int not null primary key, text varchar(100))
 create table tab_sequence (id bigint identity)
 insert into tab_sequence values(DEFAULT)

If "cacheSize" is set, the intermediate values are served without querying the database. If the server or your application is stopped or crashes or a transaction is rolled back, the unused values will never be served. The maximum hole size in numbering is consequently the value of cacheSize. HINT: Since Sybase Anywhere supports the JDBC 3.0 getGeneratedKeys method, it is recommended to use IDENTITY columns directly in the tables and then using a SimpleJdbcInsert or utilizing a KeyHolder when calling the with the update(PreparedStatementCreator psc, KeyHolder generatedKeyHolder) method of the JdbcTemplate.

Thanks to Tarald Saxi Stormark for the suggestion!

Since:

3.0.5

Author:

Thomas Risberg

Field Summary

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

paddingLength

Constructor Summary

SybaseAnywhereMaxValueIncrementer()
Default constructor for bean property style usage.

SybaseAnywhereMaxValueIncrementer(DataSource dataSource, String incrementerName, String columnName)
Convenience constructor.

Method Summary

protected String

getIncrementStatement() Statement to use to increment the "sequence" value.

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

getNextKey

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

afterPropertiesSet, getCacheSize, getColumnName, setCacheSize, setColumnName

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

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

SybaseAnywhereMaxValueIncrementer

public SybaseAnywhereMaxValueIncrementer()

Default constructor for bean property style usage.

See Also:

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

SybaseAnywhereMaxValueIncrementer

public SybaseAnywhereMaxValueIncrementer(DataSource dataSource,
                                         String incrementerName,
                                         String columnName)

Convenience constructor.

Parameters:

dataSource - the DataSource to use

incrementerName - the name of the sequence/table to use

columnName - the name of the column in the sequence table to use

Method Detail

getIncrementStatement

protected String getIncrementStatement()

Description copied from class: SybaseMaxValueIncrementer

Statement to use to increment the "sequence" value. Can be overridden by sub-classes.

Overrides:

getIncrementStatement in class SybaseMaxValueIncrementer

Returns:

The SQL statement to use