org.castor.ddlgen.keygenerator

Class IdentityKeyGenerator

Implemented Interfaces:
SchemaObject

public final class IdentityKeyGenerator
extends KeyGenerator

IDENTITY key generator can be used only with autoincrement primary key columns (identities) with Sybase ASE/ASA, MS SQL Server, MySQL and Hypersonic SQL. After the insert the key generator selects system variable @@identity which contains the last identity value for the current database connection. In the case of MySQL and Hypersonic SQL the system functions LAST_INSERT_ID() and IDENTITY() are called, respectively.
Version:
$Revision: 5951 $ $Date: 2006-04-25 16:09:10 -0600 (Tue, 25 Apr 2006) $
Authors:
Le Duc Bao
Ralf Joachim
Since:
1.1

Field Summary

static String
ALGORITHM_NAME
Name of key generator algorithm.

Fields inherited from class org.castor.ddlgen.schemaobject.AbstractSchemaObject

HASHFACTOR

Constructor Summary

IdentityKeyGenerator()
Constructor for default IDENTITY key generator.
IdentityKeyGenerator(KeyGeneratorDef definition)
Constructor for IDENTITY key generator specified by given defintion.

Method Summary

void
toCreateDDL(DDLWriter writer)
void
toDropDDL(DDLWriter writer)

Methods inherited from class org.castor.ddlgen.schemaobject.KeyGenerator

equals, getAlias, getTable, hashCode, merge, setAlias, setTable

Methods inherited from class org.castor.ddlgen.schemaobject.AbstractSchemaObject

equals, getConfiguration, getName, setConfiguration, setName

Field Details

ALGORITHM_NAME

public static final String ALGORITHM_NAME
Name of key generator algorithm.

Constructor Details

IdentityKeyGenerator

public IdentityKeyGenerator()
Constructor for default IDENTITY key generator.

IdentityKeyGenerator

public IdentityKeyGenerator(KeyGeneratorDef definition)
Constructor for IDENTITY key generator specified by given defintion.
Parameters:
definition - Key generator definition.

Method Details

toCreateDDL

public void toCreateDDL(DDLWriter writer)
Specified by:
toCreateDDL in interface SchemaObject

toDropDDL

public void toDropDDL(DDLWriter writer)
Specified by:
toDropDDL in interface SchemaObject

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