com.querydsl.jpa.impl

Class AbstractJPAQuery<T,Q extends AbstractJPAQuery<T,Q>>

java.lang.Object

com.querydsl.core.support.QueryBase<Q>

com.querydsl.core.support.FetchableQueryBase<T,Q>

com.querydsl.core.support.FetchableSubQueryBase<T,Q>

com.querydsl.jpa.JPAQueryBase<T,Q>

com.querydsl.jpa.impl.AbstractJPAQuery<T,Q>

Type Parameters:

T - result type

Q - concrete subtype

All Implemented Interfaces:

Fetchable<T>, FetchableQuery<T,JPQLQuery<T>>, FilteredClause<JPQLQuery<T>>, Query<JPQLQuery<T>>, SimpleQuery<JPQLQuery<T>>, ExtendedSubQuery<T>, Expression<T>, SubQueryExpression<T>, JPQLQuery<T>, Serializable

Direct Known Subclasses:

JPAQuery

public abstract class AbstractJPAQuery<T,Q extends AbstractJPAQuery<T,Q>>
extends JPAQueryBase<T,Q>

Abstract base class for JPA API based implementations of the JPQLQuery interface

Author:

tiwe

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected javax.persistence.EntityManager	entityManager
protected javax.persistence.FlushModeType	flushMode
protected com.google.common.collect.Multimap<String,Object>	hints
protected javax.persistence.LockModeType	lockMode
protected FactoryExpression<?>	projection
protected QueryHandler	queryHandler

Fields inherited from class com.querydsl.jpa.JPAQueryBase

queryMixin

Fields inherited from class com.querydsl.core.support.QueryBase

MDC_PARAMETERS, MDC_QUERY

Constructor Summary

Constructors

Constructor and Description
AbstractJPAQuery(javax.persistence.EntityManager em)
AbstractJPAQuery(javax.persistence.EntityManager em, JPQLTemplates templates, QueryMetadata metadata)

Method Summary

Modifier and Type	Method and Description
protected void	cleanupMDC()
Q	clone() Clone the state of this query to a new instance
abstract Q	clone(javax.persistence.EntityManager entityManager) Clone the state of this query to a new instance with the given EntityManager
abstract Q	clone(javax.persistence.EntityManager entityManager, JPQLTemplates templates) Clone the state of this query to a new instance with the given EntityManager and the specified templates
protected void	clone(Q query)
javax.persistence.Query	createQuery() Expose the original JPA query for the given projection
protected JPQLSerializer	createSerializer()
List<T>	fetch() Get the projection as a typed List
long	fetchCount() Get the count of matched elements
T	fetchOne() Get the projection as a unique result or null if no result is found
QueryResults<T>	fetchResults() Get the projection in QueryResults form
com.mysema.commons.lang.CloseableIterator<T>	iterate() Get the projection as a typed closeable Iterator
protected void	logQuery(String queryString, Map<Object,String> parameters)
protected void	reset()
Q	setFlushMode(javax.persistence.FlushModeType flushMode)
Q	setHint(String name, Object value)
Q	setLockMode(javax.persistence.LockModeType lockMode)

Methods inherited from class com.querydsl.jpa.JPAQueryBase

fetchAll, fetchJoin, from, from, from, getTemplates, innerJoin, innerJoin, innerJoin, innerJoin, innerJoin, innerJoin, join, join, join, join, join, join, leftJoin, leftJoin, leftJoin, leftJoin, leftJoin, leftJoin, on, on, rightJoin, rightJoin, rightJoin, rightJoin, rightJoin, rightJoin, serialize, serialize, toString

Methods inherited from class com.querydsl.core.support.FetchableSubQueryBase

accept, contains, contains, eq, eq, exists, getMetadata, getType, goe, goe, gt, gt, hashCode, in, in, isNotNull, isNull, loe, loe, lt, lt, ne, ne, notExists

Methods inherited from class com.querydsl.core.support.FetchableQueryBase

equals, fetchFirst, transform, uniqueResult

Methods inherited from class com.querydsl.core.support.QueryBase

distinct, groupBy, groupBy, having, having, limit, offset, orderBy, orderBy, restrict, set, where, where

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.querydsl.jpa.JPQLQuery

select, select

Methods inherited from interface com.querydsl.core.FetchableQuery

transform

Methods inherited from interface com.querydsl.core.Fetchable

fetchFirst

Methods inherited from interface com.querydsl.core.Query

groupBy, having

Methods inherited from interface com.querydsl.core.SimpleQuery

distinct, limit, offset, orderBy, restrict, set

Methods inherited from interface com.querydsl.core.FilteredClause

where

Methods inherited from interface com.querydsl.core.support.ExtendedSubQuery

contains, contains, eq, eq, exists, goe, goe, gt, gt, in, in, isNotNull, isNull, loe, loe, lt, lt, ne, ne, notExists

Methods inherited from interface com.querydsl.core.types.SubQueryExpression

getMetadata

Methods inherited from interface com.querydsl.core.types.Expression

accept, getType

Field Detail

hints

protected final com.google.common.collect.Multimap<String,Object> hints

entityManager

protected final javax.persistence.EntityManager entityManager

queryHandler

protected final QueryHandler queryHandler

lockMode

@Nullable
protected javax.persistence.LockModeType lockMode

flushMode

@Nullable
protected javax.persistence.FlushModeType flushMode

projection

@Nullable
protected FactoryExpression<?> projection

Constructor Detail

AbstractJPAQuery

public AbstractJPAQuery(javax.persistence.EntityManager em)

AbstractJPAQuery

public AbstractJPAQuery(javax.persistence.EntityManager em,
                        JPQLTemplates templates,
                        QueryMetadata metadata)

Method Detail

fetchCount

public long fetchCount()

Description copied from interface: Fetchable

Get the count of matched elements

Returns:

row count

createQuery

public javax.persistence.Query createQuery()

Expose the original JPA query for the given projection

Returns:

query

iterate

public com.mysema.commons.lang.CloseableIterator<T> iterate()

Description copied from interface: Fetchable

Get the projection as a typed closeable Iterator

Returns:

closeable iterator

fetch

public List<T> fetch()

Description copied from interface: Fetchable

Get the projection as a typed List

Specified by:

fetch in interface Fetchable<T>

Overrides:

fetch in class FetchableQueryBase<T,Q extends AbstractJPAQuery<T,Q>>

Returns:

results in list form

fetchResults

public QueryResults<T> fetchResults()

Description copied from interface: Fetchable

Get the projection in QueryResults form

Returns:

results

logQuery

protected void logQuery(String queryString,
                        Map<Object,String> parameters)

cleanupMDC

protected void cleanupMDC()

reset

protected void reset()

Specified by:

reset in class JPAQueryBase<T,Q extends AbstractJPAQuery<T,Q>>

fetchOne

@Nullable
public T fetchOne()

Description copied from interface: Fetchable

Get the projection as a unique result or null if no result is found

Returns:

first result or null

setLockMode

public Q setLockMode(javax.persistence.LockModeType lockMode)

setFlushMode

public Q setFlushMode(javax.persistence.FlushModeType flushMode)

setHint

public Q setHint(String name,
                 Object value)

createSerializer

protected JPQLSerializer createSerializer()

Specified by:

createSerializer in class JPAQueryBase<T,Q extends AbstractJPAQuery<T,Q>>

clone

protected void clone(Q query)

clone

public abstract Q clone(javax.persistence.EntityManager entityManager)

Clone the state of this query to a new instance with the given EntityManager

Parameters:

entityManager - entity manager

Returns:

cloned query

clone

public abstract Q clone(javax.persistence.EntityManager entityManager,
                        JPQLTemplates templates)

Clone the state of this query to a new instance with the given EntityManager and the specified templates

Parameters:

entityManager - entity manager

templates - templates

Returns:

cloned query

clone

public Q clone()

Clone the state of this query to a new instance

Specified by:

clone in class JPAQueryBase<T,Q extends AbstractJPAQuery<T,Q>>

Returns:

cloned query