org.castor.ddlgen.keygenerator
Class IdentityKeyGenerator

java.lang.Object
  org.castor.ddlgen.schemaobject.AbstractSchemaObject
      org.castor.ddlgen.schemaobject.KeyGenerator
          org.castor.ddlgen.keygenerator.IdentityKeyGenerator

All 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.

Since:

1.1

Version:

$Revision: 5951 $ $Date: 2006-04-25 16:09:10 -0600 (Tue, 25 Apr 2006) $

Author:

Le Duc Bao, Ralf Joachim

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) Build create script for the schema object.
void	toDropDDL(DDLWriter writer) Build drop script for the schema object.

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

Methods inherited from class java.lang.Object

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

Field Detail

ALGORITHM_NAME

public static final String ALGORITHM_NAME

Name of key generator algorithm.

See Also:

Constant Field Values

Constructor Detail

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 Detail

toCreateDDL

public void toCreateDDL(DDLWriter writer)

Build create script for the schema object.

Parameters:

writer - DDLWriter to write schema objects to.

toDropDDL

public void toDropDDL(DDLWriter writer)

Build drop script for the schema object.

Parameters:

writer - DDLWriter to write schema objects to.