Package org.hibernate.dialect.sequence

Class H2V1SequenceSupport

java.lang.Object

org.hibernate.dialect.sequence.H2V1SequenceSupport

All Implemented Interfaces:

SequenceSupport

public final class H2V1SequenceSupport
extends Object
implements SequenceSupport

Sequence support for H2Dialect.

Field Summary

Fields

Modifier and Type	Field	Description
static SequenceSupport	INSTANCE

Constructor Summary

Constructors

Constructor	Description
H2V1SequenceSupport()

Method Summary

Modifier and Type	Method	Description
String	getDropSequenceString(String sequenceName)	Typically dialects which support sequences can drop a sequence with a single command.
String	getSelectSequenceNextValString(String sequenceName)	Generate the select expression fragment that will retrieve the next value of a sequence as part of another (typically DML) statement.
String	getSelectSequencePreviousValString(String sequenceName)	Generate the select expression fragment that will retrieve the previous value of a sequence as part of another (typically DML) statement.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hibernate.dialect.sequence.SequenceSupport

getCreateSequenceString, getCreateSequenceString, getCreateSequenceStrings, getDropSequenceStrings, getFromDual, getSequenceNextValString, getSequenceNextValString, getSequencePreviousValString, sometimesNeedsStartingValue, startingValue, supportsPooledSequences, supportsSequences

Field Detail

INSTANCE

public static final SequenceSupport INSTANCE

Constructor Detail

H2V1SequenceSupport

public H2V1SequenceSupport()

Method Detail

getDropSequenceString

public String getDropSequenceString(String sequenceName)

Description copied from interface: SequenceSupport

Typically dialects which support sequences can drop a sequence with a single command. This is convenience form of SequenceSupport.getDropSequenceStrings(java.lang.String) to help facilitate that.

Dialects which support sequences and can drop a sequence in a single command need *only* override this method. Dialects which support sequences but require multiple commands to drop a sequence should instead override SequenceSupport.getDropSequenceStrings(java.lang.String).

Specified by:

getDropSequenceString in interface SequenceSupport

Parameters:

sequenceName - The name of the sequence

Returns:

The sequence drop commands

getSelectSequenceNextValString

public String getSelectSequenceNextValString(String sequenceName)

Description copied from interface: SequenceSupport

Generate the select expression fragment that will retrieve the next value of a sequence as part of another (typically DML) statement.

This differs from SequenceSupport.getSequenceNextValString(String) in that it must return an expression usable within another statement.

Specified by:

getSelectSequenceNextValString in interface SequenceSupport

Parameters:

sequenceName - the name of the sequence

Returns:

The "next value" fragment.

getSelectSequencePreviousValString

public String getSelectSequencePreviousValString(String sequenceName)
                                          throws MappingException

Description copied from interface: SequenceSupport

Generate the select expression fragment that will retrieve the previous value of a sequence as part of another (typically DML) statement.

This differs from SequenceSupport.getSequencePreviousValString(String) in that it must return an expression usable within another statement.

Specified by:

getSelectSequencePreviousValString in interface SequenceSupport

Parameters:

sequenceName - the name of the sequence

Returns:

The "previous value" fragment.

Throws:

MappingException - If sequences are not supported.