IdentityKeyGenerator (Castor JavaDoc)

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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

Fields
Modifier and Type Field Description

static java.lang.String ALGORITHM_NAME
Name of key generator algorithm.
- Fields inherited from class org.castor.ddlgen.schemaobject.AbstractSchemaObject
  HASHFACTOR

Constructor Summary

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

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`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.AbstractSchemaObject
equals, getConfiguration, getName, setConfiguration, setName

Methods inherited from class org.castor.ddlgen.schemaobject.KeyGenerator
equals, getAlias, getTable, hashCode, merge, setAlias, setTable

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - ALGORITHM_NAME
```
public static final java.lang.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.

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