Package net.sf.basedb.core.query
Class HqlLeftJoin
java.lang.Object
net.sf.basedb.core.query.HqlLeftJoin
- All Implemented Interfaces:
Join
,QueryElement
public class HqlLeftJoin extends Object implements Join
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:
Hql.leftJoin(String, String, String, Restriction, boolean)
- Last modified
- $Date: 2012-09-14 09:28:35 +0200 (fr, 14 sep 2012) $
-
Field Summary
Fields Modifier and Type Field Description private String
alias
private boolean
fetch
private String
joinedAlias
private Restriction
on
private String
property
-
Constructor Summary
Constructors Constructor Description HqlLeftJoin(String alias, String property, String joinedAlias, Restriction on, boolean fetch)
-
Method Summary
Modifier and Type Method Description boolean
equals(Object other)
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>
getChildren()
Get the children of this query element or null if it has no children.String
getThetaJoin(Query query, DbControl dc)
String
getThetaJoinCondition(Query query, DbControl dc)
int
hashCode()
String
toQl(Query query, DbControl dc)
Create a query language string of the query element.String
toString()
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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()
-