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 java.lang.String |
ALGORITHM_NAME
Name of key generator algorithm. |
Constructor Summary |
IdentityKeyGenerator()
Constructor for default IDENTITY key generator. |
IdentityKeyGenerator(org.exolab.castor.mapping.xml.KeyGeneratorDef definition)
Constructor for IDENTITY key generator specified by given defintion. |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
ALGORITHM_NAME
public static final java.lang.String ALGORITHM_NAME
- Name of key generator algorithm.
- See Also:
- Constant Field Values
IdentityKeyGenerator
public IdentityKeyGenerator()
- Constructor for default IDENTITY key generator.
IdentityKeyGenerator
public IdentityKeyGenerator(org.exolab.castor.mapping.xml.KeyGeneratorDef definition)
- Constructor for IDENTITY key generator specified by given defintion.
- Parameters:
definition
- Key generator definition.
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.
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