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

Author:

Andrus Adamchik

Field Summary

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

DEFAULT_PK_CACHE_SIZE, NEXT_ID, objDesc, pkCache, pkCacheSize, resultDesc

Constructor Summary

FrontBasePkGenerator()

Method Summary

void	createAutoPk(DataNode node, java.util.List dbEntities) Generates necessary database objects to provide automatic primary key support.
java.util.List	createAutoPkStatements(java.util.List 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, java.util.List dbEntities) Drops table named "AUTO_PK_SUPPORT" if it exists in the database.
protected java.lang.String	dropAutoPkString()
int	getPkCacheSize() Retruns zero as PK caching is not supported by FrontBaseAdapter.
protected java.lang.String	pkCreateString(java.lang.String entName)
protected java.lang.String	pkDeleteString(java.util.List dbEntities)
protected int	pkFromDatabase(DataNode node, DbEntity entity) Performs primary key generation ignoring cache.
protected java.lang.String	pkSelectString(java.lang.String entName)
protected java.lang.String	pkTableCreateString()
protected java.lang.String	pkUpdateString(java.lang.String entName)

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

autoPkTableExists, binaryPK, dropAutoPkStatements, generatePkForDbEntity, generatePkForDbEntityString, reset, runUpdate, setPkCacheSize

Methods inherited from class java.lang.Object

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

Constructor Detail

FrontBasePkGenerator

public FrontBasePkGenerator()

Method Detail

getPkCacheSize

public int getPkCacheSize()

Retruns zero as PK caching is not supported by FrontBaseAdapter.

Overrides:

getPkCacheSize in class JdbcPkGenerator

createAutoPk

public void createAutoPk(DataNode node,
                         java.util.List dbEntities)
                  throws java.lang.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 autogeneration support

Throws:

java.lang.Exception

createAutoPkStatements

public java.util.List createAutoPkStatements(java.util.List 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,
                       java.util.List dbEntities)
                throws java.lang.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 autogeneration support should be dropped.

Throws:

java.lang.Exception

pkTableCreateString

protected java.lang.String pkTableCreateString()

Overrides:

pkTableCreateString in class JdbcPkGenerator

pkDeleteString

protected java.lang.String pkDeleteString(java.util.List dbEntities)

Overrides:

pkDeleteString in class JdbcPkGenerator

pkCreateString

protected java.lang.String pkCreateString(java.lang.String entName)

Overrides:

pkCreateString in class JdbcPkGenerator

pkSelectString

protected java.lang.String pkSelectString(java.lang.String entName)

Overrides:

pkSelectString in class JdbcPkGenerator

pkUpdateString

protected java.lang.String pkUpdateString(java.lang.String entName)

Overrides:

pkUpdateString in class JdbcPkGenerator

dropAutoPkString

protected java.lang.String dropAutoPkString()

Overrides:

dropAutoPkString in class JdbcPkGenerator

pkFromDatabase

protected int pkFromDatabase(DataNode node,
                             DbEntity entity)
                      throws java.lang.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:

pkFromDatabase in class JdbcPkGenerator

Throws:

java.lang.Exception