org.hibernate.id.enhanced
Class TableStructure

java.lang.Object
  org.hibernate.engine.TransactionHelper
      org.hibernate.id.enhanced.TableStructure

All Implemented Interfaces:

DatabaseStructure

public class TableStructure
extends TransactionHelper
implements DatabaseStructure

Describes a table used to mimic sequence behavior

Author:

Steve Ebersole

Constructor Summary

TableStructure(Dialect dialect, String tableName, String valueColumnName, int initialValue, int incrementSize)

Method Summary

AccessCallback	buildCallback(SessionImplementor session) A callback to be able to get the next value from the underlying structure as needed.
protected Serializable	doWorkInCurrentTransaction(Connection conn, String sql) The work to be done
int	getIncrementSize() The configured increment size
String	getName() The name of the database structure (table or sequence).
int	getTimesAccessed() How many times has this structure been accessed through this reference?
void	prepare(Optimizer optimizer) Prepare this structure for use.
String[]	sqlCreateStrings(Dialect dialect) Commands needed to create the underlying structures.
String[]	sqlDropStrings(Dialect dialect) Commands needed to drop the underlying structures.

Methods inherited from class org.hibernate.engine.TransactionHelper

doWorkInNewTransaction

Methods inherited from class java.lang.Object

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

Constructor Detail

TableStructure

public TableStructure(Dialect dialect,
                      String tableName,
                      String valueColumnName,
                      int initialValue,
                      int incrementSize)

Method Detail

getName

public String getName()

The name of the database structure (table or sequence).

Specified by:

getName in interface DatabaseStructure

Returns:

The structure name.

getIncrementSize

public int getIncrementSize()

The configured increment size

Specified by:

getIncrementSize in interface DatabaseStructure

Returns:

The configured increment size

getTimesAccessed

public int getTimesAccessed()

How many times has this structure been accessed through this reference?

Specified by:

getTimesAccessed in interface DatabaseStructure

Returns:

The number of accesses.

prepare

public void prepare(Optimizer optimizer)

Prepare this structure for use. Called sometime after instantiation, but before first use.

Specified by:

prepare in interface DatabaseStructure

Parameters:

optimizer - The optimizer being applied to the generator.

buildCallback

public AccessCallback buildCallback(SessionImplementor session)

A callback to be able to get the next value from the underlying structure as needed.

Specified by:

buildCallback in interface DatabaseStructure

Parameters:

session - The session.

Returns:

The next value.

sqlCreateStrings

public String[] sqlCreateStrings(Dialect dialect)
                          throws HibernateException

Commands needed to create the underlying structures.

Specified by:

sqlCreateStrings in interface DatabaseStructure

Parameters:

dialect - The database dialect being used.

Returns:

The creation commands.

Throws:

HibernateException

sqlDropStrings

public String[] sqlDropStrings(Dialect dialect)
                        throws HibernateException

Commands needed to drop the underlying structures.

Specified by:

sqlDropStrings in interface DatabaseStructure

Parameters:

dialect - The database dialect being used.

Returns:

The drop commands.

Throws:

HibernateException

doWorkInCurrentTransaction

protected Serializable doWorkInCurrentTransaction(Connection conn,
                                                  String sql)
                                           throws SQLException

The work to be done

Specified by:

doWorkInCurrentTransaction in class TransactionHelper

Throws:

SQLException