com.mysema.query.jpa.impl

Class AbstractJPAQuery<Q extends AbstractJPAQuery<Q>>

java.lang.Object

com.mysema.query.support.QueryBase<Q>

com.mysema.query.support.ProjectableQuery<Q>

com.mysema.query.jpa.JPAQueryBase<Q>

com.mysema.query.jpa.impl.AbstractJPAQuery<Q>

Type Parameters:

Q -

All Implemented Interfaces:

Projectable

Direct Known Subclasses:

JPAQuery

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

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

Author:

tiwe

Field Summary

Fields

Modifier and Type	Field and Description
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.mysema.query.jpa.JPAQueryBase

entityManager, queryMixin

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
long	count() return the amount of matched rows
javax.persistence.Query	createQuery(Expression<?> expr) Expose the original JPA query for the given projection
javax.persistence.Query	createQuery(Expression<?>[] args) Expose the original JPA query for the given projection
javax.persistence.Query	createQuery(Expression<?> expr1, Expression<?> expr2, Expression<?>... rest) Expose the original JPA query for the given projection
com.mysema.commons.lang.CloseableIterator<Tuple>	iterate(Expression<?>... args) iterate over the results for the given projection
<RT> com.mysema.commons.lang.CloseableIterator<RT>	iterate(Expression<RT> expr) iterate over the results for the given projection
List<Tuple>	list(Expression<?>... args) list the results for the given projection An empty list is returned for no results.
<RT> List<RT>	list(Expression<RT> expr) list the results for the given projection An empty list is returned for no results.
SearchResults<Tuple>	listResults(Expression<?>... args) list the results for the given projection
<RT> SearchResults<RT>	listResults(Expression<RT> expr) list the results for the given projection
protected void	logQuery(String queryString)
Q	setFlushMode(javax.persistence.FlushModeType flushMode)
Q	setHint(String name, Object value)
Q	setLockMode(javax.persistence.LockModeType lockMode)
Tuple	uniqueResult(Expression<?>... args) return a unique result for the given projection or null if no result is found
<RT> RT	uniqueResult(Expression<RT> expr) return a unique result for the given projection or null if no result is found

Methods inherited from class com.mysema.query.jpa.JPAQueryBase

buildQueryString, exists, fetch, fetchAll, from, from, fullJoin, fullJoin, fullJoin, fullJoin, fullJoin, fullJoin, getConstants, getMetadata, getTemplates, innerJoin, innerJoin, innerJoin, innerJoin, innerJoin, innerJoin, join, join, join, join, join, join, leftJoin, leftJoin, leftJoin, leftJoin, leftJoin, leftJoin, on, on, reset, rightJoin, rightJoin, rightJoin, rightJoin, rightJoin, rightJoin, setConstants, toCountRowsString, toQueryString, toString

Methods inherited from class com.mysema.query.support.ProjectableQuery

countDistinct, iterateDistinct, iterateDistinct, listDistinct, listDistinct, listDistinctResults, map, notExists, singleResult, singleResult, transform, uniqueResult

Methods inherited from class com.mysema.query.support.QueryBase

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

Methods inherited from class java.lang.Object

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

Field Detail

hints

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

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

count

public long count()

Description copied from interface: Projectable

return the amount of matched rows

createQuery

public javax.persistence.Query createQuery(Expression<?> expr)

Expose the original JPA query for the given projection

Parameters:

expr -

Returns:

createQuery

public javax.persistence.Query createQuery(Expression<?> expr1,
                                  Expression<?> expr2,
                                  Expression<?>... rest)

Expose the original JPA query for the given projection

Parameters:

expr -

Returns:

createQuery

public javax.persistence.Query createQuery(Expression<?>[] args)

Expose the original JPA query for the given projection

Parameters:

args -

Returns:

iterate

public com.mysema.commons.lang.CloseableIterator<Tuple> iterate(Expression<?>... args)

Description copied from interface: Projectable

iterate over the results for the given projection

Returns:

iterate

public <RT> com.mysema.commons.lang.CloseableIterator<RT> iterate(Expression<RT> expr)

Description copied from interface: Projectable

iterate over the results for the given projection

Type Parameters:

RT - generic type of the Iterator

Returns:

an Iterator over the projection

list

public List<Tuple> list(Expression<?>... args)

Description copied from interface: Projectable

list the results for the given projection An empty list is returned for no results.

Specified by:

list in interface Projectable

Overrides:

list in class ProjectableQuery<Q extends AbstractJPAQuery<Q>>

Returns:

list

public <RT> List<RT> list(Expression<RT> expr)

Description copied from interface: Projectable

list the results for the given projection An empty list is returned for no results.

Specified by:

list in interface Projectable

Overrides:

list in class ProjectableQuery<Q extends AbstractJPAQuery<Q>>

Type Parameters:

RT - generic type of the List

Returns:

a List over the projection

listResults

public SearchResults<Tuple> listResults(Expression<?>... args)

Description copied from interface: Projectable

list the results for the given projection

Returns:

listResults

public <RT> SearchResults<RT> listResults(Expression<RT> expr)

Description copied from interface: Projectable

list the results for the given projection

Returns:

logQuery

protected void logQuery(String queryString)

uniqueResult

public <RT> RT uniqueResult(Expression<RT> expr)

Description copied from interface: Projectable

return a unique result for the given projection or null if no result is found

There is some ambiguity for missing results and null valued results, for disambiguation use the list or iterate methods instead.

Type Parameters:

RT - return type

Returns:

the result or null for an empty result

uniqueResult

public Tuple uniqueResult(Expression<?>... args)

Description copied from interface: Projectable

return a unique result for the given projection or null if no result is found

There is some ambiguity for missing results and null valued results, for disambiguation use the list or iterate methods instead.

Returns:

setLockMode

public Q setLockMode(javax.persistence.LockModeType lockMode)

setFlushMode

public Q setFlushMode(javax.persistence.FlushModeType flushMode)

setHint

public Q setHint(String name,
        Object value)