com.querydsl.jpa

Class DefaultQueryHandler

java.lang.Object

com.querydsl.jpa.DefaultQueryHandler

All Implemented Interfaces:

QueryHandler

public final class DefaultQueryHandler
extends java.lang.Object
implements QueryHandler

DefaultQueryHandler is the default implementation of the QueryHandler interface

Author:

tiwe

Field Summary

Fields

Modifier and Type	Field and Description
static QueryHandler	DEFAULT

Method Summary

Modifier and Type	Method and Description
void	addEntity(javax.persistence.Query query, java.lang.String alias, java.lang.Class<?> type) Add the given entity to the given native query
void	addScalar(javax.persistence.Query query, java.lang.String alias, java.lang.Class<?> type) Add the given scalar to the given native query
boolean	createNativeQueryTyped() Return whether native queries should be created as typed queries
<T> com.mysema.commons.lang.CloseableIterator<T>	iterate(javax.persistence.Query query, @Nullable FactoryExpression<?> projection) Iterate the results with the optional projection
<T> java.util.stream.Stream<T>	stream(javax.persistence.Query query, @Nullable FactoryExpression<?> projection) Stream the results with the optional projection
boolean	transform(javax.persistence.Query query, FactoryExpression<?> projection) Transform the results of the given query using the given factory expression
boolean	wrapEntityProjections() Return whether entity projections need to be wrapped

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static final QueryHandler DEFAULT

Method Detail

addEntity

public void addEntity(javax.persistence.Query query,
                      java.lang.String alias,
                      java.lang.Class<?> type)

Description copied from interface: QueryHandler

Add the given entity to the given native query

Specified by:

addEntity in interface QueryHandler

Parameters:

query - query

alias - alias

type - type

addScalar

public void addScalar(javax.persistence.Query query,
                      java.lang.String alias,
                      java.lang.Class<?> type)

Description copied from interface: QueryHandler

Add the given scalar to the given native query

Specified by:

addScalar in interface QueryHandler

Parameters:

query - query

alias - alias

type - type

createNativeQueryTyped

public boolean createNativeQueryTyped()

Description copied from interface: QueryHandler

Return whether native queries should be created as typed queries

Specified by:

createNativeQueryTyped in interface QueryHandler

Returns:

whether native queries should be created as typed queries

iterate

public <T> com.mysema.commons.lang.CloseableIterator<T> iterate(javax.persistence.Query query,
                                                                @Nullable
                                                                @Nullable FactoryExpression<?> projection)

Description copied from interface: QueryHandler

Iterate the results with the optional projection

Specified by:

iterate in interface QueryHandler

Parameters:

query - query

Returns:

iterator

stream

public <T> java.util.stream.Stream<T> stream(javax.persistence.Query query,
                                             @Nullable
                                             @Nullable FactoryExpression<?> projection)

Description copied from interface: QueryHandler

Stream the results with the optional projection

Specified by:

stream in interface QueryHandler

Parameters:

query - query

Returns:

stream

transform

public boolean transform(javax.persistence.Query query,
                         FactoryExpression<?> projection)

Description copied from interface: QueryHandler

Transform the results of the given query using the given factory expression

Specified by:

transform in interface QueryHandler

Parameters:

query - query

projection - projection

Returns:

true, if query as been modified

wrapEntityProjections

public boolean wrapEntityProjections()

Description copied from interface: QueryHandler

Return whether entity projections need to be wrapped

Specified by:

wrapEntityProjections in interface QueryHandler

Returns:

whether entity projections need to be wrapped