Package net.sf.basedb.core.query

Interface Join

All Superinterfaces:

QueryElement

All Known Implementing Classes:

AnnotationJoin, DynamicJoin, ExtraValueJoin, HqlInnerJoin, HqlLeftJoin, HqlRightJoin, RealJoin, ReporterListJoin

public interface Join
extends QueryElement

A join query element. This is a query element that can appear in the JOIN part of a Query. Typically a join consists of join table and a join condition (SQL) or an association property (HQL). Examples:

// SQL
SELECT hw.* 
FROM Hardware hw
JOIN HardwareTypes hwt ON hw.hardwaretype_id = hwt.id

// HQL
SELECT hw 
FROM HardwareData hw
JOIN hw.hardwareType hwt

Joins for HQL can be created by the Hql factory class.

Version:

2.0

Author:

Nicklas

See Also:

• Hql

Last modified

$Date: 2009-04-06 14:52:39 +0200 (må, 06 apr 2009) $

Method Summary

Modifier and Type	Method	Description
String	getThetaJoin(Query query, DbControl dc)
String	getThetaJoinCondition(Query query, DbControl dc)

Methods inherited from interface net.sf.basedb.core.query.QueryElement

getChildren, toQl

Method Details

getThetaJoin

String getThetaJoin(Query query,
 DbControl dc)
             throws BaseException

Throws:

BaseException

getThetaJoinCondition

String getThetaJoinCondition(Query query,
 DbControl dc)
                      throws BaseException

Throws:

BaseException