org.eclipse.persistence.internal.jpa.querydef

Class CriteriaQueryImpl<T>

java.lang.Object

org.eclipse.persistence.internal.jpa.querydef.CommonAbstractCriteriaImpl<T>

org.eclipse.persistence.internal.jpa.querydef.AbstractQueryImpl<T>

org.eclipse.persistence.internal.jpa.querydef.CriteriaQueryImpl<T>

All Implemented Interfaces:

java.io.Serializable, javax.persistence.criteria.AbstractQuery<T>, javax.persistence.criteria.CommonAbstractCriteria, javax.persistence.criteria.CriteriaQuery<T>

public class CriteriaQueryImpl<T>
extends AbstractQueryImpl<T>
implements javax.persistence.criteria.CriteriaQuery<T>

Purpose: Contains the implementation of the CriteriaQuery interface of the JPA criteria API.

Description: This is the container class for the components that define a query.

Since:

EclipseLink 1.2

Author:

gyorke

See Also:

CriteriaQuery, Serialized Form

Constructor Summary

Constructors

Constructor and Description
CriteriaQueryImpl(javax.persistence.metamodel.Metamodel metamodel, org.eclipse.persistence.internal.jpa.querydef.AbstractQueryImpl.ResultType queryResult, java.lang.Class result, CriteriaBuilderImpl queryBuilder)

Method Summary

Modifier and Type	Method and Description
void	addJoin(FromImpl from)
javax.persistence.criteria.CriteriaQuery<T>	distinct(boolean distinct) Specify whether duplicate query results will be eliminated.
java.util.List<javax.persistence.criteria.Order>	getOrderList() Return the ordering expressions in order of precedence.
javax.persistence.criteria.Selection<T>	getSelection() Return the selection item of the query.
javax.persistence.criteria.CriteriaQuery<T>	groupBy(javax.persistence.criteria.Expression<?>... grouping) Specify the expressions that are used to form groups over the query results.
javax.persistence.criteria.CriteriaQuery<T>	groupBy(java.util.List<javax.persistence.criteria.Expression<?>> grouping) Specify the expressions that are used to form groups over the query results.
javax.persistence.criteria.CriteriaQuery<T>	having(javax.persistence.criteria.Expression<java.lang.Boolean> restriction) Specify a restriction over the groups of the query.
javax.persistence.criteria.CriteriaQuery<T>	having(javax.persistence.criteria.Predicate... restrictions) Specify restrictions over the groups of the query according the conjunction of the specified restriction predicates.
javax.persistence.criteria.CriteriaQuery<T>	multiselect(java.util.List<javax.persistence.criteria.Selection<?>> selectionList) Specify the items that are to be returned in the query result.
javax.persistence.criteria.CriteriaQuery<T>	multiselect(javax.persistence.criteria.Selection<?>... selections) Specify the items that are to be returned in the query result.
javax.persistence.criteria.CriteriaQuery<T>	orderBy(java.util.List<javax.persistence.criteria.Order> o) Specify the ordering expressions that are used to order the query results.
javax.persistence.criteria.CriteriaQuery<T>	orderBy(javax.persistence.criteria.Order... o) Specify the ordering expressions that are used to order the query results.
void	populateAndSetConstructorSelection(ConstructorSelectionImpl constructorSelection, java.lang.Class<?> class1, javax.persistence.criteria.Selection<?>... selections) This method will set this queryImpl's selection to a ConstructorSelectionImpl, creating a new instance or populating the one passed in as necessary.
javax.persistence.criteria.CriteriaQuery<T>	select(javax.persistence.criteria.Selection<? extends T> selection) Specify the item that is to be returned in the query result.
DatabaseQuery	translate() Translates from the criteria query to a EclipseLink Database Query.
javax.persistence.criteria.CriteriaQuery<T>	where(javax.persistence.criteria.Expression<java.lang.Boolean> restriction) Modify the query to restrict the query result according to the specified boolean expression.
javax.persistence.criteria.CriteriaQuery<T>	where(javax.persistence.criteria.Predicate... restrictions) Modify the query to restrict the query result according to the conjunction of the specified restriction predicates.

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.AbstractQueryImpl

from, from, getGroupList, getGroupRestriction, getRoots, isDistinct

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.CommonAbstractCriteriaImpl

addParameter, getParameters, getRestriction, getResultType, internalFrom, internalFrom, subquery

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.persistence.criteria.CriteriaQuery

getParameters

Methods inherited from interface javax.persistence.criteria.AbstractQuery

from, from, getGroupList, getGroupRestriction, getResultType, getRoots, isDistinct

Methods inherited from interface javax.persistence.criteria.CommonAbstractCriteria

getRestriction, subquery

Constructor Detail

CriteriaQueryImpl

public CriteriaQueryImpl(javax.persistence.metamodel.Metamodel metamodel,
                         org.eclipse.persistence.internal.jpa.querydef.AbstractQueryImpl.ResultType queryResult,
                         java.lang.Class result,
                         CriteriaBuilderImpl queryBuilder)

Method Detail

select

public javax.persistence.criteria.CriteriaQuery<T> select(javax.persistence.criteria.Selection<? extends T> selection)

Specify the item that is to be returned in the query result. Replaces the previously specified selection, if any.

Specified by:

select in interface javax.persistence.criteria.CriteriaQuery<T>

Parameters:

selection - selection specifying the item that is to be returned in the query result

Returns:

the modified query

multiselect

public javax.persistence.criteria.CriteriaQuery<T> multiselect(javax.persistence.criteria.Selection<?>... selections)

Specify the items that are to be returned in the query result. Replaces the previously specified selection(s), if any. The type of the result of the query execution depends on the specification of the criteria query object as well as the arguments to the multiselect method as follows: If the type of the criteria query is CriteriaQuery, a Tuple object corresponding to the arguments of the multiselect method will be instantiated and returned for each row that results from the query execution. If the type of the criteria query is CriteriaQuery for some user-defined class X, then the arguments to the multiselect method will be passed to the X constructor and an instance of type X will be returned for each row. The IllegalStateException will be thrown if a constructor for the given argument types does not exist. If the type of the criteria query is CriteriaQuery for some class X, an instance of type X[] will be returned for each row. The elements of the array will correspond to the arguments of the multiselect method. The IllegalStateException will be thrown if the arguments to the multiselect method are not of type X. If the type of the criteria query is CriteriaQuery