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/*******************************************************************************
* Copyright (c) 2008 - 2013 Oracle Corporation. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Linda DeMichiel - Java Persistence 2.1
* Linda DeMichiel - Java Persistence 2.0
*
******************************************************************************/
package javax.persistence.criteria;
import javax.persistence.metamodel.SingularAttribute;
import javax.persistence.metamodel.CollectionAttribute;
import javax.persistence.metamodel.ListAttribute;
import javax.persistence.metamodel.MapAttribute;
import javax.persistence.metamodel.SetAttribute;
import java.util.Set;
/**
* Represents a bound type, usually an entity that appears in
* the from clause, but may also be an embeddable belonging to
* an entity in the from clause.
* Serves as a factory for Joins of associations, embeddables, and
* collections belonging to the type, and for Paths of attributes
* belonging to the type.
*
* @param the source type
* @param the target type
*
* @since Java Persistence 2.0
*/
@SuppressWarnings("hiding")
public interface From extends Path, FetchParent {
/**
* Return the joins that have been made from this bound type.
* Returns empty set if no joins have been made from this
* bound type.
* Modifications to the set do not affect the query.
* @return joins made from this type
*/
Set> getJoins();
/**
* Whether the From object has been obtained as a result of
* correlation (use of a Subquery correlate
* method).
* @return boolean indicating whether the object has been
* obtained through correlation
*/
boolean isCorrelated();
/**
* Returns the parent From object from which the correlated
* From object has been obtained through correlation (use
* of a Subquery correlate method).
* @return the parent of the correlated From object
* @throws IllegalStateException if the From object has
* not been obtained through correlation
*/
From getCorrelationParent();
/**
* Create an inner join to the specified single-valued
* attribute.
* @param attribute target of the join
* @return the resulting join
*/
Join join(SingularAttribute attribute);
/**
* Create a join to the specified single-valued attribute
* using the given join type.
* @param attribute target of the join
* @param jt join type
* @return the resulting join
*/
Join join(SingularAttribute attribute, JoinType jt);
/**
* Create an inner join to the specified Collection-valued
* attribute.
* @param collection target of the join
* @return the resulting join
*/
CollectionJoin join(CollectionAttribute collection);
/**
* Create an inner join to the specified Set-valued attribute.
* @param set target of the join
* @return the resulting join
*/
SetJoin join(SetAttribute set);
/**
* Create an inner join to the specified List-valued attribute.
* @param list target of the join
* @return the resulting join
*/
ListJoin join(ListAttribute list);
/**
* Create an inner join to the specified Map-valued attribute.
* @param map target of the join
* @return the resulting join
*/
MapJoin join(MapAttribute map);
/**
* Create a join to the specified Collection-valued attribute
* using the given join type.
* @param collection target of the join
* @param jt join type
* @return the resulting join
*/
CollectionJoin join(CollectionAttribute collection, JoinType jt);
/**
* Create a join to the specified Set-valued attribute using
* the given join type.
* @param set target of the join
* @param jt join type
* @return the resulting join
*/
SetJoin join(SetAttribute set, JoinType jt);
/**
* Create a join to the specified List-valued attribute using
* the given join type.
* @param list target of the join
* @param jt join type
* @return the resulting join
*/
ListJoin join(ListAttribute list, JoinType jt);
/**
* Create a join to the specified Map-valued attribute using
* the given join type.
* @param map target of the join
* @param jt join type
* @return the resulting join
*/
MapJoin join(MapAttribute map, JoinType jt);
//String-based:
/**
* Create an inner join to the specified attribute.
* @param attributeName name of the attribute for the
* target of the join
* @return the resulting join
* @throws IllegalArgumentException if attribute of the given
* name does not exist
*/
Join join(String attributeName);
/**
* Create an inner join to the specified Collection-valued
* attribute.
* @param attributeName name of the attribute for the
* target of the join
* @return the resulting join
* @throws IllegalArgumentException if attribute of the given
* name does not exist
*/
CollectionJoin joinCollection(String attributeName);
/**
* Create an inner join to the specified Set-valued attribute.
* @param attributeName name of the attribute for the
* target of the join
* @return the resulting join
* @throws IllegalArgumentException if attribute of the given
* name does not exist
*/
SetJoin joinSet(String attributeName);
/**
* Create an inner join to the specified List-valued attribute.
* @param attributeName name of the attribute for the
* target of the join
* @return the resulting join
* @throws IllegalArgumentException if attribute of the given
* name does not exist
*/
ListJoin joinList(String attributeName);
/**
* Create an inner join to the specified Map-valued attribute.
* @param attributeName name of the attribute for the
* target of the join
* @return the resulting join
* @throws IllegalArgumentException if attribute of the given
* name does not exist
*/
MapJoin joinMap(String attributeName);
/**
* Create a join to the specified attribute using the given
* join type.
* @param attributeName name of the attribute for the
* target of the join
* @param jt join type
* @return the resulting join
* @throws IllegalArgumentException if attribute of the given
* name does not exist
*/
Join join(String attributeName, JoinType jt);
/**
* Create a join to the specified Collection-valued attribute
* using the given join type.
* @param attributeName name of the attribute for the
* target of the join
* @param jt join type
* @return the resulting join
* @throws IllegalArgumentException if attribute of the given
* name does not exist
*/
CollectionJoin joinCollection(String attributeName, JoinType jt);
/**
* Create a join to the specified Set-valued attribute using
* the given join type.
* @param attributeName name of the attribute for the
* target of the join
* @param jt join type
* @return the resulting join
* @throws IllegalArgumentException if attribute of the given
* name does not exist
*/
SetJoin joinSet(String attributeName, JoinType jt);
/**
* Create a join to the specified List-valued attribute using
* the given join type.
* @param attributeName name of the attribute for the
* target of the join
* @param jt join type
* @return the resulting join
* @throws IllegalArgumentException if attribute of the given
* name does not exist
*/
ListJoin joinList(String attributeName, JoinType jt);
/**
* Create a join to the specified Map-valued attribute using
* the given join type.
* @param attributeName name of the attribute for the
* target of the join
* @param jt join type
* @return the resulting join
* @throws IllegalArgumentException if attribute of the given
* name does not exist
*/
MapJoin joinMap(String attributeName, JoinType jt);
}