Package com.querydsl.jpa.impl

Class JPAQueryFactory

java.lang.Object

com.querydsl.jpa.impl.JPAQueryFactory

All Implemented Interfaces:

QueryFactory<JPQLQuery<?>>, JPQLQueryFactory

public class JPAQueryFactory
extends Object
implements JPQLQueryFactory

Factory class for query and DML clause creation

Author:

tiwe

Constructor Summary

Constructors

Constructor	Description
JPAQueryFactory(JPQLTemplates templates, Supplier<javax.persistence.EntityManager> entityManager)
JPAQueryFactory(JPQLTemplates templates, javax.persistence.EntityManager entityManager)
JPAQueryFactory(Supplier<javax.persistence.EntityManager> entityManager)
JPAQueryFactory(javax.persistence.EntityManager entityManager)

Method Summary

Modifier and Type	Method	Description
JPADeleteClause	delete(EntityPath<?> path)	Create a new DELETE clause
JPAQuery<?>	from(EntityPath<?> from)	Create a new Query with the given source
JPAQuery<?>	from(EntityPath<?>... from)	Create a new Query with the given source
JPAInsertClause	insert(EntityPath<?> path)	Create a new INSERT clause
JPAQuery<?>	query()
JPAQuery<Tuple>	select(Expression<?>... exprs)	Create a new JPQLQuery instance with the given projection
<T> JPAQuery<T>	select(Expression<T> expr)	Create a new JPQLQuery instance with the given projection
JPAQuery<Tuple>	selectDistinct(Expression<?>... exprs)	Create a new JPQLQuery instance with the given projection
<T> JPAQuery<T>	selectDistinct(Expression<T> expr)	Create a new JPQLQuery instance with the given projection
<T> JPAQuery<T>	selectFrom(EntityPath<T> from)	Create a new JPQLQuery instance with the given source and projection
JPAQuery<Integer>	selectOne()	Create a new JPQLQuery instance with the projection one
JPAQuery<Integer>	selectZero()	Create a new JPQLQuery instance with the projection zero
JPAUpdateClause	update(EntityPath<?> path)	Create a new UPDATE clause

Methods inherited from class java.lang.Object

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

Constructor Details

JPAQueryFactory

public JPAQueryFactory(javax.persistence.EntityManager entityManager)

JPAQueryFactory

public JPAQueryFactory(JPQLTemplates templates,
 javax.persistence.EntityManager entityManager)

JPAQueryFactory

public JPAQueryFactory(Supplier<javax.persistence.EntityManager> entityManager)

JPAQueryFactory

public JPAQueryFactory(JPQLTemplates templates,
 Supplier<javax.persistence.EntityManager> entityManager)

Method Details

delete

public JPADeleteClause delete(EntityPath<?> path)

Description copied from interface: JPQLQueryFactory

Create a new DELETE clause

Specified by:

delete in interface JPQLQueryFactory

Parameters:

path - entity to delete from

Returns:

delete clause

select

public <T> JPAQuery<T> select(Expression<T> expr)

Description copied from interface: JPQLQueryFactory

Create a new JPQLQuery instance with the given projection

Specified by:

select in interface JPQLQueryFactory

Parameters:

expr - projection

Returns:

select(expr)

select

public JPAQuery<Tuple> select(Expression<?>... exprs)

Description copied from interface: JPQLQueryFactory

Create a new JPQLQuery instance with the given projection

Specified by:

select in interface JPQLQueryFactory

Parameters:

exprs - projection

Returns:

select(exprs)

selectDistinct

public <T> JPAQuery<T> selectDistinct(Expression<T> expr)

Description copied from interface: JPQLQueryFactory

Create a new JPQLQuery instance with the given projection

Specified by:

selectDistinct in interface JPQLQueryFactory

Parameters:

expr - projection

Returns:

select(distinct expr)

selectDistinct

public JPAQuery<Tuple> selectDistinct(Expression<?>... exprs)

Description copied from interface: JPQLQueryFactory

Create a new JPQLQuery instance with the given projection

Specified by:

selectDistinct in interface JPQLQueryFactory

Parameters:

exprs - projection

Returns:

select(distinct exprs)

selectOne

public JPAQuery<Integer> selectOne()

Description copied from interface: JPQLQueryFactory

Create a new JPQLQuery instance with the projection one

Specified by:

selectOne in interface JPQLQueryFactory

Returns:

select(1)

selectZero

public JPAQuery<Integer> selectZero()

Description copied from interface: JPQLQueryFactory

Create a new JPQLQuery instance with the projection zero

Specified by:

selectZero in interface JPQLQueryFactory

Returns:

select(0)

selectFrom

public <T> JPAQuery<T> selectFrom(EntityPath<T> from)

Description copied from interface: JPQLQueryFactory

Create a new JPQLQuery instance with the given source and projection

Specified by:

selectFrom in interface JPQLQueryFactory

Parameters:

from - projection and source

Returns:

select(from).from(from)

from

public JPAQuery<?> from(EntityPath<?> from)

Description copied from interface: JPQLQueryFactory

Create a new Query with the given source

Specified by:

from in interface JPQLQueryFactory

Parameters:

from - from

Returns:

from(from)

from

public JPAQuery<?> from(EntityPath<?>... from)

Description copied from interface: JPQLQueryFactory

Create a new Query with the given source

Specified by:

from in interface JPQLQueryFactory

Parameters:

from - from

Returns:

from(from)

update

public JPAUpdateClause update(EntityPath<?> path)

Description copied from interface: JPQLQueryFactory

Create a new UPDATE clause

Specified by:

update in interface JPQLQueryFactory

Parameters:

path - entity to update

Returns:

update clause

insert

public JPAInsertClause insert(EntityPath<?> path)

Description copied from interface: JPQLQueryFactory

Create a new INSERT clause

Specified by:

insert in interface JPQLQueryFactory

Parameters:

path - entity to insert to

Returns:

insert clause

query

public JPAQuery<?> query()

Specified by:

query in interface QueryFactory<JPQLQuery<?>>