Package org.apache.cayenne.dba.frontbase

Class FrontBasePkGenerator

java.lang.Object

org.apache.cayenne.dba.JdbcPkGenerator

org.apache.cayenne.dba.frontbase.FrontBasePkGenerator

All Implemented Interfaces:

PkGenerator

public class FrontBasePkGenerator
extends JdbcPkGenerator

Since:

1.2

Field Summary

Fields inherited from class org.apache.cayenne.dba.JdbcPkGenerator

adapter, DEFAULT_PK_CACHE_SIZE, pkCache, pkCacheSize, pkStartValue

Constructor Summary

Constructors

Constructor	Description
FrontBasePkGenerator()	Used by DI
FrontBasePkGenerator(JdbcAdapter adapter)

Method Summary

Modifier and Type	Method	Description
void	createAutoPk(DataNode node, List<DbEntity> dbEntities)	Generates necessary database objects to provide automatic primary key support.
List<String>	createAutoPkStatements(List<DbEntity> dbEntities)	Returns a list of SQL strings needed to generates database objects to provide automatic primary support for the list of entities.
void	dropAutoPk(DataNode node, List<DbEntity> dbEntities)	Drops table named "AUTO_PK_SUPPORT" if it exists in the database.
protected String	dropAutoPkString()
int	getPkCacheSize()	Returns zero as PK caching is not supported by FrontBaseAdapter.
protected long	longPkFromDatabase(DataNode node, DbEntity entity)	Performs primary key generation ignoring cache.
protected String	pkCreateString(String entName)
protected String	pkDeleteString(List<DbEntity> dbEntities)
protected String	pkSelectString(String entName)
protected String	pkTableCreateString()
protected String	pkUpdateString(String entName)

Methods inherited from class org.apache.cayenne.dba.JdbcPkGenerator

autoPkTableExists, dropAutoPkStatements, generatePk, getAdapter, reset, runUpdate, setAdapter, setPkCacheSize

Methods inherited from class java.lang.Object

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

Constructor Details

FrontBasePkGenerator

public FrontBasePkGenerator()

Used by DI

Since:

4.1

FrontBasePkGenerator

public FrontBasePkGenerator(JdbcAdapter adapter)

Method Details

getPkCacheSize

public int getPkCacheSize()

Returns zero as PK caching is not supported by FrontBaseAdapter.

Overrides:

getPkCacheSize in class JdbcPkGenerator

createAutoPk

public void createAutoPk(DataNode node,
 List<DbEntity> dbEntities)
                  throws Exception

Description copied from interface: PkGenerator

Generates necessary database objects to provide automatic primary key support.

Specified by:

createAutoPk in interface PkGenerator

Overrides:

createAutoPk in class JdbcPkGenerator

Parameters:

node - node that provides access to a DataSource.

dbEntities - a list of entities that require primary key auto-generation support

Throws:

Exception

createAutoPkStatements

public List<String> createAutoPkStatements(List<DbEntity> dbEntities)

Description copied from interface: PkGenerator

Returns a list of SQL strings needed to generates database objects to provide automatic primary support for the list of entities. No actual database operations are performed.

Specified by:

createAutoPkStatements in interface PkGenerator

Overrides:

createAutoPkStatements in class JdbcPkGenerator

dropAutoPk

public void dropAutoPk(DataNode node,
 List<DbEntity> dbEntities)
                throws Exception

Description copied from class: JdbcPkGenerator

Drops table named "AUTO_PK_SUPPORT" if it exists in the database.

Specified by:

dropAutoPk in interface PkGenerator

Overrides:

dropAutoPk in class JdbcPkGenerator

Parameters:

node - node that provides access to a DataSource.

dbEntities - a list of entities whose primary key auto-generation support should be dropped.

Throws:

Exception

pkTableCreateString

protected String pkTableCreateString()

Overrides:

pkTableCreateString in class JdbcPkGenerator

pkDeleteString

protected String pkDeleteString(List<DbEntity> dbEntities)

Overrides:

pkDeleteString in class JdbcPkGenerator

pkCreateString

protected String pkCreateString(String entName)

Overrides:

pkCreateString in class JdbcPkGenerator

pkSelectString

protected String pkSelectString(String entName)

Overrides:

pkSelectString in class JdbcPkGenerator

pkUpdateString

protected String pkUpdateString(String entName)

Overrides:

pkUpdateString in class JdbcPkGenerator

dropAutoPkString

protected String dropAutoPkString()

Overrides:

dropAutoPkString in class JdbcPkGenerator

longPkFromDatabase

protected long longPkFromDatabase(DataNode node,
 DbEntity entity)
                           throws Exception

Description copied from class: JdbcPkGenerator

Performs primary key generation ignoring cache. Generates a range of primary keys as specified by "pkCacheSize" bean property.

This method is called internally from "generatePkForDbEntity" and then generated range of key values is saved in cache for performance. Subclasses that implement different primary key generation solutions should override this method, not "generatePkForDbEntity".

Overrides:

longPkFromDatabase in class JdbcPkGenerator

Throws:

Exception

Since:

3.0