uk.ac.ebi.intact.persistence
Class AbstractSequenceManager

java.lang.Object
  |
  +--uk.ac.ebi.intact.persistence.AbstractSequenceManager

All Implemented Interfaces:

org.apache.ojb.broker.util.sequence.SequenceManager

Direct Known Subclasses:

OracleSequenceManager, PostgresSequenceManager

public abstract class AbstractSequenceManager

extends java.lang.Object

implements org.apache.ojb.broker.util.sequence.SequenceManager

Version:

$Id: AbstractSequenceManager.java,v 1.1 2004/01/31 11:43:01 skerrien Exp $

Author:

Samuel Kerrien (skerrien@ebi.ac.uk)

Field Summary

protected static java.lang.String	_sitePrefix The prefix for all ID strings
protected static java.sql.PreparedStatement	_stmt Prepared SQL statement to get a new id from a database sequence object.
protected org.apache.ojb.broker.PersistenceBroker	broker reference to the PersistenceBroker
static java.lang.String	CONFIG_FILE

Constructor Summary

AbstractSequenceManager(org.apache.ojb.broker.PersistenceBroker broker)
Public constructor

Method Summary

protected abstract java.lang.String	getNextSequence() Called by the vendor specific implementation to obtain the SQL statement which allows to get the next unique ID.
int	getUniqueId(java.lang.Class clazz, java.lang.String fieldName) returns a unique int for class clazz and field fieldName.
long	getUniqueLong(java.lang.Class clazz, java.lang.String fieldName) Returns a long id unique across all classes.
java.lang.Object	getUniqueObject(java.lang.Class clazz, java.lang.String fieldName) Returns an id unique across all classes.
java.lang.String	getUniqueString(java.lang.Class clazz, java.lang.String fieldName) Returns an id unique across all classes.
protected void	prepareSequenceStm(java.lang.Class clazz) Prepare a statement to retrieve the next unique ID from a database sequence object.

Methods inherited from class java.lang.Object

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

Field Detail

CONFIG_FILE

public static final java.lang.String CONFIG_FILE

See Also:

Constant Field Values

broker

protected org.apache.ojb.broker.PersistenceBroker broker

reference to the PersistenceBroker

_stmt

protected static java.sql.PreparedStatement _stmt

Prepared SQL statement to get a new id from a database sequence object.

_sitePrefix

protected static java.lang.String _sitePrefix

The prefix for all ID strings

Constructor Detail

AbstractSequenceManager

public AbstractSequenceManager(org.apache.ojb.broker.PersistenceBroker broker)
                        throws IntactException

Public constructor

Method Detail

getNextSequence

protected abstract java.lang.String getNextSequence()

Called by the vendor specific implementation to obtain the SQL statement which allows to get the next unique ID.

Returns:

the SQL statement which allows to get the next unique ID

prepareSequenceStm

protected final void prepareSequenceStm(java.lang.Class clazz)

Prepare a statement to retrieve the next unique ID from a database sequence object.

getUniqueId

public int getUniqueId(java.lang.Class clazz,
                       java.lang.String fieldName)

returns a unique int for class clazz and field fieldName. the returned uid is unique accross all tables in the extent of clazz.

Specified by:

getUniqueId in interface org.apache.ojb.broker.util.sequence.SequenceManager

getUniqueString

public java.lang.String getUniqueString(java.lang.Class clazz,
                                        java.lang.String fieldName)

Returns an id unique across all classes. The clazz attribute is only maintained to implement the interface.

Specified by:

getUniqueString in interface org.apache.ojb.broker.util.sequence.SequenceManager

getUniqueLong

public long getUniqueLong(java.lang.Class clazz,
                          java.lang.String fieldName)

Returns a long id unique across all classes. The clazz attribute is only maintained to implement the interface.

Specified by:

getUniqueLong in interface org.apache.ojb.broker.util.sequence.SequenceManager

getUniqueObject

public java.lang.Object getUniqueObject(java.lang.Class clazz,
                                        java.lang.String fieldName)

Returns an id unique across all classes. The clazz attribute is only maintained to implement the interface.

Specified by:

getUniqueObject in interface org.apache.ojb.broker.util.sequence.SequenceManager