Class NextvalSequenceSupport

java.lang.Object

org.hibernate.dialect.sequence.spi.NextvalSequenceSupport

All Implemented Interfaces:

SequenceSupport

@SPI({USE,IMPLEMENT})
public class NextvalSequenceSupport
extends Object
implements SequenceSupport

Standard family base for databases using sequence.nextval and sequence.currval expressions.

Extend this class only when both expression forms match the database, and override the surrounding select or DDL grammar where necessary.

Since:

8.0

Constructor Summary

Constructors

Constructor	Description
NextvalSequenceSupport()	Create a nextval-family strategy or provider subclass.

Method Summary

Modifier and Type	Method	Description
final String	getSelectSequenceNextValString(String sequenceName)	Render the expression which obtains the next value inside another SQL statement.
final String	getSelectSequencePreviousValString(String sequenceName)	Render the expression which obtains the previous value inside another SQL statement.

Methods inherited from class Object

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

Methods inherited from interface SequenceSupport

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

Constructor Details

NextvalSequenceSupport

@SPI(IMPLEMENT)
public NextvalSequenceSupport()

Create a nextval-family strategy or provider subclass.

Method Details

getSelectSequenceNextValString

public final String getSelectSequenceNextValString(String sequenceName)

Description copied from interface: SequenceSupport

Render the expression which obtains the next value inside another SQL statement. Do not include a surrounding select statement.

Specified by:

getSelectSequenceNextValString in interface SequenceSupport

Parameters:

sequenceName - the qualified sequence name

Returns:

the next-value expression

getSelectSequencePreviousValString

public final String getSelectSequencePreviousValString(String sequenceName)

Description copied from interface: SequenceSupport

Render the expression which obtains the previous value inside another SQL statement. Override this method only when the database exposes such an expression.

Specified by:

getSelectSequencePreviousValString in interface SequenceSupport

Parameters:

sequenceName - the qualified sequence name

Returns:

the previous-value expression