org.castor.cpa.persistence.sql.keygen
Class TableKeyGenerator

java.lang.Object
  org.castor.cpa.persistence.sql.keygen.AbstractKeyGenerator
      org.castor.cpa.persistence.sql.keygen.AbstractBeforeKeyGenerator
          org.castor.cpa.persistence.sql.keygen.TableKeyGenerator

All Implemented Interfaces:

KeyGenerator

public class TableKeyGenerator
extends AbstractBeforeKeyGenerator

Version:

$Revision: 8994 $ $Date: 2011-08-02 01:40:59 +0200 (Di, 02 Aug 2011) $

Author:

Werner Guttmann

Field Summary

static int	DEFAULT_ALLOCATION_SIZE
static int	DEFAULT_INITIAL_VALUE
static String	DEFAULT_PK_COLUMN_NAME
static String	DEFAULT_PK_COLUMN_VALUE
static String	DEFAULT_TABLE_NAME
static String	DEFAULT_VALUE_COLUMN_NAME
static String	DESCRIPTOR_KEY

Constructor Summary

TableKeyGenerator(PersistenceFactory factory, Properties params, int sqlType)
Creates an instance of this key generator.

Method Summary

Object	generateKey(Connection connection, String tableName, String primKeyName) Generate a new key for the specified table.
JPATableGeneratorDescriptor	getDescriptor()
PersistenceFactory	getFactory()
boolean	isInSameConnection() Is key generated in the same connection as INSERT?

Methods inherited from class org.castor.cpa.persistence.sql.keygen.AbstractBeforeKeyGenerator

buildStatement, executeStatement

Methods inherited from class org.castor.cpa.persistence.sql.keygen.AbstractKeyGenerator

closeSeparateConnection, getSeparateConnection

Methods inherited from class java.lang.Object

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

Field Detail

DESCRIPTOR_KEY

public static final String DESCRIPTOR_KEY

See Also:

Constant Field Values

DEFAULT_TABLE_NAME

public static final String DEFAULT_TABLE_NAME

See Also:

Constant Field Values

DEFAULT_ALLOCATION_SIZE

public static final int DEFAULT_ALLOCATION_SIZE

See Also:

Constant Field Values

DEFAULT_INITIAL_VALUE

public static final int DEFAULT_INITIAL_VALUE

See Also:

Constant Field Values

DEFAULT_PK_COLUMN_NAME

public static final String DEFAULT_PK_COLUMN_NAME

See Also:

Constant Field Values

DEFAULT_VALUE_COLUMN_NAME

public static final String DEFAULT_VALUE_COLUMN_NAME

See Also:

Constant Field Values

DEFAULT_PK_COLUMN_VALUE

public static final String DEFAULT_PK_COLUMN_VALUE

See Also:

Constant Field Values

Constructor Detail

TableKeyGenerator

public TableKeyGenerator(PersistenceFactory factory,
                         Properties params,
                         int sqlType)
                  throws MappingException

Creates an instance of this key generator.

Parameters:

factory - The current PersistenceFactory instance.

params - Parameters for the key generator.

sqlType - The SQL type of the identity field.

Throws:

MappingException

Method Detail

generateKey

public Object generateKey(Connection connection,
                          String tableName,
                          String primKeyName)
                   throws PersistenceException

Description copied from interface: KeyGenerator

Generate a new key for the specified table. This method is called when a new object is about to be created. In some environments the name of the owner of the object is known, e.g. the principal in a J2EE server. This method is never called for DURING_INSERT key generators.

Parameters:

connection - An open connection within the given transaction

tableName - The table name

primKeyName - The primary key name

Returns:

A new key

Throws:

PersistenceException - An error occured talking to persistent storage

isInSameConnection

public boolean isInSameConnection()

Description copied from interface: KeyGenerator

Is key generated in the same connection as INSERT? For DURING_INSERT style this method is never called.

Returns:

{code}True{code} If this instance is in same JDBC Connection.

getFactory

public PersistenceFactory getFactory()

getDescriptor

public JPATableGeneratorDescriptor getDescriptor()