com.holonplatform.datastore.jpa.querydsl

Interface QueryDsl

All Superinterfaces:

com.holonplatform.core.datastore.DatastoreCommodity, Serializable

All Known Implementing Classes:

DefaultQueryDslCommodity

public interface QueryDsl
extends com.holonplatform.core.datastore.DatastoreCommodity

A DatastoreCommodity for JPA Datastore QueryDSL integration.

Since:

5.0.0

Method Summary

Modifier and Type	Method and Description
JpaDeleteClause	delete(com.querydsl.core.types.EntityPath<?> entity) Create a new DELETE clause.
default JpaQuery<?>	from(com.querydsl.core.types.EntityPath<?>... froms) Create a new JpaQuery with the given sources.
default JpaQuery<?>	from(com.querydsl.core.types.EntityPath<?> from) Create a new JpaQuery with the given source.
JpaQuery<?>	query() Create a new query.
default JpaQuery<com.querydsl.core.Tuple>	select(com.querydsl.core.types.Expression<?>... expressions) Create a new JpaQuery instance with the given projection.
default <T> JpaQuery<T>	select(com.querydsl.core.types.Expression<T> expression) Create a new JpaQuery instance with the given projection.
default JpaQuery<com.querydsl.core.Tuple>	selectDistinct(com.querydsl.core.types.Expression<?>... expressions) Create a new JpaQuery instance with the given distinct projection.
default <T> JpaQuery<T>	selectDistinct(com.querydsl.core.types.Expression<T> expression) Create a new JpaQuery instance with the given distinct projection.
default <T> JpaQuery<T>	selectFrom(com.querydsl.core.types.EntityPath<T> from) Create a new JpaQuery instance with the given source and projection.
default JpaQuery<Integer>	selectOne() Create a new JpaQuery instance with the projection one.
default JpaQuery<Integer>	selectZero() Create a new JpaQuery instance with the projection zero.
JpaUpdateClause	update(com.querydsl.core.types.EntityPath<?> entity) Create a new UPDATE clause.

Method Detail

query

JpaQuery<?> query()

Create a new query.

Returns:

A new JpaQuery

select

default <T> JpaQuery<T> select(com.querydsl.core.types.Expression<T> expression)

Create a new JpaQuery instance with the given projection.

Type Parameters:

T - Expression and query result type

Parameters:

expression - projection

Returns:

A new query with given projection

select

default JpaQuery<com.querydsl.core.Tuple> select(com.querydsl.core.types.Expression<?>... expressions)

Create a new JpaQuery instance with the given projection.

Parameters:

expressions - projections

Returns:

A new query with given projection

selectDistinct

default <T> JpaQuery<T> selectDistinct(com.querydsl.core.types.Expression<T> expression)

Create a new JpaQuery instance with the given distinct projection.

Type Parameters:

T - Expression and query result type

Parameters:

expression - projection

Returns:

A new query with given projection

selectDistinct

default JpaQuery<com.querydsl.core.Tuple> selectDistinct(com.querydsl.core.types.Expression<?>... expressions)

Create a new JpaQuery instance with the given distinct projection.

Parameters:

expressions - projection

Returns:

A new query with given projection

selectOne

default JpaQuery<Integer> selectOne()

Create a new JpaQuery instance with the projection one.

Returns:

A new query with given projection

selectZero

default JpaQuery<Integer> selectZero()

Create a new JpaQuery instance with the projection zero.

Returns:

A new query with given projection

selectFrom

default <T> JpaQuery<T> selectFrom(com.querydsl.core.types.EntityPath<T> from)

Create a new JpaQuery instance with the given source and projection.

Type Parameters:

T - Projection and source type

Parameters:

from - projection and source

Returns:

A new query with given source and projection

from

default JpaQuery<?> from(com.querydsl.core.types.EntityPath<?> from)

Create a new JpaQuery with the given source.

Parameters:

from - Query source

Returns:

A new query with given source

from

default JpaQuery<?> from(com.querydsl.core.types.EntityPath<?>... froms)

Create a new JpaQuery with the given sources.

Parameters:

froms - Query sources

Returns:

A new query with given source

update

JpaUpdateClause update(com.querydsl.core.types.EntityPath<?> entity)

Create a new UPDATE clause.

Parameters:

entity - Entity to update (not null)

Returns:

A new update clause

delete

JpaDeleteClause delete(com.querydsl.core.types.EntityPath<?> entity)

Create a new DELETE clause.

Parameters:

entity - Entity to delete from (not null)

Returns:

A new delete clause