Package org.hibernate.dialect.identity

Class DB2IdentityColumnSupport

java.lang.Object

org.hibernate.dialect.identity.IdentityColumnSupportImpl

org.hibernate.dialect.identity.DB2IdentityColumnSupport

All Implemented Interfaces:

IdentityColumnSupport

Direct Known Subclasses:

DB2zIdentityColumnSupport

public class DB2IdentityColumnSupport
extends IdentityColumnSupportImpl

Field Summary

Fields

Modifier and Type	Field	Description
static DB2IdentityColumnSupport	INSTANCE

Constructor Summary

Constructors

Constructor	Description
DB2IdentityColumnSupport()

Method Summary

Modifier and Type	Method	Description
String	appendIdentitySelectToInsert(String identityColumnName, String insertString)	Provided we IdentityColumnSupport.supportsInsertSelectIdentity(), then attach the "select identity" clause to the insert statement.
String	getIdentityColumnString(int type)	The syntax used during DDL to define a column as being an IDENTITY of a particular type.
String	getIdentityInsertString()	The keyword used to insert a generated value into an identity column (or null).
String	getIdentitySelectString(String table, String column, int type)	Get the select command to use to retrieve the last generated IDENTITY value for a particular table
boolean	supportsIdentityColumns()	Does this dialect support identity column key generation?
boolean	supportsInsertSelectIdentity()	Does the dialect support some form of inserting and selecting the generated IDENTITY value all in the same statement.

Methods inherited from class org.hibernate.dialect.identity.IdentityColumnSupportImpl

appendIdentitySelectToInsert, buildGetGeneratedKeysDelegate, hasDataTypeInIdentityColumn

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.identity.IdentityColumnSupport

hasIdentityInsertKeyword

Field Detail

INSTANCE

public static final DB2IdentityColumnSupport INSTANCE

Constructor Detail

DB2IdentityColumnSupport

public DB2IdentityColumnSupport()

Method Detail

supportsIdentityColumns

public boolean supportsIdentityColumns()

Description copied from interface: IdentityColumnSupport

Does this dialect support identity column key generation?

Specified by:

supportsIdentityColumns in interface IdentityColumnSupport

Overrides:

supportsIdentityColumns in class IdentityColumnSupportImpl

Returns:

True if IDENTITY columns are supported; false otherwise.

supportsInsertSelectIdentity

public boolean supportsInsertSelectIdentity()

Description copied from interface: IdentityColumnSupport

Does the dialect support some form of inserting and selecting the generated IDENTITY value all in the same statement.

Specified by:

supportsInsertSelectIdentity in interface IdentityColumnSupport

Overrides:

supportsInsertSelectIdentity in class IdentityColumnSupportImpl

Returns:

True if the dialect supports selecting the just generated IDENTITY in the insert statement.

getIdentitySelectString

public String getIdentitySelectString(String table,
                                      String column,
                                      int type)

Description copied from interface: IdentityColumnSupport

Get the select command to use to retrieve the last generated IDENTITY value for a particular table

Specified by:

getIdentitySelectString in interface IdentityColumnSupport

Overrides:

getIdentitySelectString in class IdentityColumnSupportImpl

Parameters:

table - The table into which the insert was done

column - The PK column.

type - The Types type code.

Returns:

The appropriate select command

getIdentityColumnString

public String getIdentityColumnString(int type)

Description copied from interface: IdentityColumnSupport

The syntax used during DDL to define a column as being an IDENTITY of a particular type.

Specified by:

getIdentityColumnString in interface IdentityColumnSupport

Overrides:

getIdentityColumnString in class IdentityColumnSupportImpl

Parameters:

type - The Types type code.

Returns:

The appropriate DDL fragment.

getIdentityInsertString

public String getIdentityInsertString()

Description copied from interface: IdentityColumnSupport

The keyword used to insert a generated value into an identity column (or null). Need if the dialect does not support inserts that specify no column values.

Specified by:

getIdentityInsertString in interface IdentityColumnSupport

Overrides:

getIdentityInsertString in class IdentityColumnSupportImpl

Returns:

The appropriate keyword.

appendIdentitySelectToInsert

public String appendIdentitySelectToInsert(String identityColumnName,
                                           String insertString)

Description copied from interface: IdentityColumnSupport

Provided we IdentityColumnSupport.supportsInsertSelectIdentity(), then attach the "select identity" clause to the insert statement.

Note, if IdentityColumnSupport.supportsInsertSelectIdentity() == false then the insert-string should be returned without modification.

Parameters:

identityColumnName - The name of the identity column

insertString - The insert command

Returns:

The insert command with any necessary identity select clause attached.