Package net.sf.basedb.core.query
Class HqlLeftJoin
java.lang.Object
net.sf.basedb.core.query.HqlLeftJoin
- All Implemented Interfaces:
Join
,QueryElement
Left joins an association to another item:
LEFT JOIN <alias.property> <joinedAlias>
to the query.
Throws an UnsupportedOperationException
if
Query.getQueryType()
isn't QueryType.HQL
.
- Version:
- 2.0
- Author:
- Nicklas
- See Also:
- Last modified
- $Date: 2012-09-14 09:28:35 +0200 (fr, 14 sep 2012) $
-
Field Summary
Modifier and TypeFieldDescriptionprivate final String
private final boolean
private final String
private final Restriction
private final String
-
Constructor Summary
ConstructorDescriptionHqlLeftJoin
(String alias, String property, String joinedAlias, Restriction on, boolean fetch) -
Method Summary
Modifier and TypeMethodDescriptionboolean
This join is equal to another HqlLeftJoin if they join to the same property with the same alias and use the same condition and fetch mode.Collection<? extends QueryElement>
Get the children of this query element or null if it has no children.getThetaJoin
(Query query, DbControl dc) getThetaJoinCondition
(Query query, DbControl dc) int
hashCode()
Create a query language string of the query element.toString()
-
Field Details
-
alias
-
property
-
joinedAlias
-
on
-
fetch
private final boolean fetch
-
-
Constructor Details
-
HqlLeftJoin
HqlLeftJoin(String alias, String property, String joinedAlias, Restriction on, boolean fetch)
-
-
Method Details
-
toQl
Description copied from interface:QueryElement
Create a query language string of the query element. Use theQuery.getQueryType()
method to find out which query language is wanted in case the element requires different syntax for different languages.- Specified by:
toQl
in interfaceQueryElement
- Parameters:
query
- The query that is about to be executeddc
- TheDbControl
object used to execute the query- Throws:
BaseException
- If there is any other error
-
getChildren
Description copied from interface:QueryElement
Get the children of this query element or null if it has no children. For example theAddExpression
has two children, the expression beeing added.- Specified by:
getChildren
in interfaceQueryElement
- Returns:
- The restriction to join on or null
-
getThetaJoin
- Specified by:
getThetaJoin
in interfaceJoin
- Throws:
BaseException
-
getThetaJoinCondition
- Specified by:
getThetaJoinCondition
in interfaceJoin
- Throws:
BaseException
-
toString
-
equals
This join is equal to another HqlLeftJoin if they join to the same property with the same alias and use the same condition and fetch mode. -
hashCode
public int hashCode()
-