Class DB2SequenceSupport

java.lang.Object

org.hibernate.dialect.sequence.spi.ANSISequenceSupport

org.hibernate.dialect.sequence.spi.DB2SequenceSupport

All Implemented Interfaces:

SequenceSupport

@SPI({USE,IMPLEMENT})
public class DB2SequenceSupport
extends ANSISequenceSupport

Db2/Derby family base using ANSI value expressions, values stand-alone selection, and restrictive sequence drop syntax.

Extend this class for a family member which retains those common rules and override only its differing DDL or value-selection methods.

Since:

8.0

Constructor Summary

Constructors

Constructor	Description
DB2SequenceSupport()	Create a Db2-family strategy or provider subclass.

Method Summary

Modifier and Type	Method	Description
String	getDropSequenceString(String sequenceName)	Render the single command which drops a sequence.
String	getSelectSequencePreviousValString(String sequenceName)	Render the expression which obtains the previous value inside another SQL statement.
String	getSequenceNextValString(String sequenceName)	Render a stand-alone statement which obtains the next sequence value.
String	getSequencePreviousValString(String sequenceName)	Render a stand-alone statement which obtains the previous sequence value.

Methods inherited from class ANSISequenceSupport

getSelectSequenceNextValString

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

Constructor Details

DB2SequenceSupport

@SPI(IMPLEMENT)
public DB2SequenceSupport()

Create a Db2-family strategy or provider subclass.

Method Details

getSequenceNextValString

public String getSequenceNextValString(String sequenceName)

Description copied from interface: SequenceSupport

Render a stand-alone statement which obtains the next sequence value.

Parameters:

sequenceName - the qualified sequence name

Returns:

the next-value statement

getSelectSequencePreviousValString

public String getSelectSequencePreviousValString(String sequenceName)
                                          throws MappingException

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

Overrides:

getSelectSequencePreviousValString in class ANSISequenceSupport

Parameters:

sequenceName - the qualified sequence name

Returns:

the previous-value expression

Throws:

MappingException - when the operation is unsupported

getSequencePreviousValString

public String getSequencePreviousValString(String sequenceName)

Description copied from interface: SequenceSupport

Render a stand-alone statement which obtains the previous sequence value.

Parameters:

sequenceName - the qualified sequence name

Returns:

the previous-value statement

getDropSequenceString

public String getDropSequenceString(String sequenceName)

Description copied from interface: SequenceSupport

Render the single command which drops a sequence. Override the multi-command form instead when one logical drop requires several commands.

Parameters:

sequenceName - the qualified sequence name

Returns:

the sequence-drop command