Package org.hibernate.dialect.sequence

Class HSQLSequenceSupport

java.lang.Object

org.hibernate.dialect.sequence.ANSISequenceSupport

org.hibernate.dialect.sequence.HSQLSequenceSupport

All Implemented Interfaces:

SequenceSupport

public final class HSQLSequenceSupport
extends ANSISequenceSupport

Sequence support for HSQLDialect.

Field Summary

Fields

Modifier and Type	Field	Description
static SequenceSupport	INSTANCE

Constructor Summary

Constructors

Constructor	Description
HSQLSequenceSupport()

Method Summary

Modifier and Type	Method	Description
String	getCreateSequenceString(String sequenceName)	HSQL will start with 0, by default.
String	getCreateSequenceString(String sequenceName, int initialValue, int incrementSize)	Because of the overridden getCreateSequenceString(String), we must also override getCreateSequenceString(String, int, int) to prevent duplication of start with.
String	getDropSequenceString(String sequenceName)	Typically dialects which support sequences can drop a sequence with a single command.
String	getSequenceNextValString(String sequenceName)	Generate the appropriate select statement to to retrieve the next value of a sequence.
String	getSequencePreviousValString(String sequenceName)	Generate the appropriate select statement to to retrieve the previous value of a sequence.

Methods inherited from class org.hibernate.dialect.sequence.ANSISequenceSupport

getSelectSequenceNextValString, getSelectSequencePreviousValString

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

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

Field Detail

INSTANCE

public static final SequenceSupport INSTANCE

Constructor Detail

HSQLSequenceSupport

public HSQLSequenceSupport()

Method Detail

getCreateSequenceString

public String getCreateSequenceString(String sequenceName)

HSQL will start with 0, by default. In order for Hibernate to know that this not transient, manually start with 1.

Parameters:

sequenceName - The name of the sequence

Returns:

The sequence creation command

getCreateSequenceString

public String getCreateSequenceString(String sequenceName,
                                      int initialValue,
                                      int incrementSize)

Because of the overridden getCreateSequenceString(String), we must also override getCreateSequenceString(String, int, int) to prevent duplication of start with.

Parameters:

sequenceName - The name of the sequence

initialValue - The initial value to apply to 'create sequence' statement

incrementSize - The increment value to apply to 'create sequence' statement

Returns:

The sequence creation command

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).

Parameters:

sequenceName - The name of the sequence

Returns:

The sequence drop commands

getSequenceNextValString

public String getSequenceNextValString(String sequenceName)

Description copied from interface: SequenceSupport

Generate the appropriate select statement to to retrieve the next value of a sequence.

This should be a stand alone select statement.

Parameters:

sequenceName - the name of the sequence

Returns:

String The select "next value" statement.

getSequencePreviousValString

public String getSequencePreviousValString(String sequenceName)

Description copied from interface: SequenceSupport

Generate the appropriate select statement to to retrieve the previous value of a sequence.

This should be a stand alone select statement.

Parameters:

sequenceName - the name of the sequence

Returns:

String The select "previous value" statement.