org.exolab.castor.jdo.keygen
Class SequenceKeyGeneratorFactory
java.lang.Object
org.exolab.castor.jdo.keygen.SequenceKeyGeneratorFactory
- All Implemented Interfaces:
- KeyGeneratorFactory
public final class SequenceKeyGeneratorFactory
- extends java.lang.Object
- implements KeyGeneratorFactory
SEQUENCE key generator factory.
The short name of this key generator is "SEQUENCE".
It uses Oracle/PostrgeSQL SEQUENCEs
There are two optional parameters for this key generator:
1) name is "sequence" and the default value is "{0}_seq";
2) name is "returning", values: "true"/"false", default is "false".
The latter parameter should be used only with Oracle8i, "true" value
turns on more efficient RETURNING syntax.
It is possible to use naming patterns like this for obtaining
SEQUENCE name by table name. This gives the possibility to use
one global key generator declaration rather than one per table.
- Version:
- $Revision: 1.1 $ $Date: 2005/06/01 12:08:16 $
- Author:
- Oleg Nitz
- See Also:
SequenceKeyGenerator
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
SequenceKeyGeneratorFactory
public SequenceKeyGeneratorFactory()
getKeyGenerator
public KeyGenerator getKeyGenerator(PersistenceFactory factory,
java.util.Properties params,
int sqlType)
throws MappingException
- Produce the key generator.
- Specified by:
getKeyGenerator
in interface KeyGeneratorFactory
- Parameters:
factory
- Helper object for obtaining database-specific QuerySyntax.params
- Parameters for key generator.sqlType
- The SQL type of the primary key,
the generated identities must have the corresponding Java type,
e.g. java.sql.Types.INTEGER corresponds to java.lang.Integer,
java.sql.Types.NUMERIC corresponds to java.lang.BigDecimal.
- Throws:
MappingException
- Factory:
- Helper object for obtaining database-specific QuerySyntax.
getName
public java.lang.String getName()
- The short name of this key generator is "SEQUENCE"
- Specified by:
getName
in interface KeyGeneratorFactory
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