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/*
* Copyright (c) 2011, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Linda DeMichiel - Java Persistence 2.1
package javax.persistence;
import javax.persistence.metamodel.Attribute;
import java.util.List;
/**
* This type represents the root of an entity graph that will be used
* as a template to define the attribute nodes and boundaries of a
* graph of entities and entity relationships. The root must be an
* entity type.
*
* The methods to add subgraphs implicitly create the
* corresponding attribute nodes as well; such attribute nodes
* should not be redundantly specified.
*
* @param The type of the root entity.
*
* @see AttributeNode
* @see Subgraph
* @see NamedEntityGraph
*
* @since Java Persistence 2.1
*/
public interface EntityGraph {
/**
* Return the name of a named EntityGraph (an entity graph
* defined by means of the NamedEntityGraph
* annotation, XML descriptor element, or added by means of the
* addNamedEntityGraph method. Returns null if the
* EntityGraph is not a named EntityGraph.
*/
public String getName();
/**
* Add one or more attribute nodes to the entity graph.
*
* @param attributeName name of the attribute
* @throws IllegalArgumentException if the attribute is not an
* attribute of this entity.
* @throws IllegalStateException if the EntityGraph has been
* statically defined
*/
public void addAttributeNodes(String ... attributeName);
/**
* Add one or more attribute nodes to the entity graph.
*
* @param attribute attribute
* @throws IllegalStateException if the EntityGraph has been
* statically defined
*/
public void addAttributeNodes(Attribute ... attribute);
/**
* Add a node to the graph that corresponds to a managed
* type. This allows for construction of multi-node entity graphs
* that include related managed types.
*
* @param attribute attribute
* @return subgraph for the attribute
* @throws IllegalArgumentException if the attribute's target type
* is not a managed type
* @throws IllegalStateException if the EntityGraph has been
* statically defined
*/
public Subgraph addSubgraph(Attribute attribute);
/**
* Add a node to the graph that corresponds to a managed
* type with inheritance. This allows for multiple subclass
* subgraphs to be defined for this node of the entity
* graph. Subclass subgraphs will automatically include the
* specified attributes of superclass subgraphs.
*
* @param attribute attribute
* @param type entity subclass
* @return subgraph for the attribute
* @throws IllegalArgumentException if the attribute's target
* type is not a managed type
* @throws IllegalStateException if the EntityGraph has been
* statically defined
*/
public Subgraph addSubgraph(Attribute attribute, Class type);
/**
* Add a node to the graph that corresponds to a managed
* type. This allows for construction of multi-node entity graphs
* that include related managed types.
*
* @param attributeName name of the attribute
* @return subgraph for the attribute
* @throws IllegalArgumentException if the attribute is not an
* attribute of this entity.
* @throws IllegalArgumentException if the attribute's target type
* is not a managed type
* @throws IllegalStateException if the EntityGraph has been
* statically defined
*/
public Subgraph addSubgraph(String attributeName);
/**
* Add a node to the graph that corresponds to a managed
* type with inheritance. This allows for multiple subclass
* subgraphs to be defined for this node of the entity graph.
* Subclass subgraphs will automatically include the specified
* attributes of superclass subgraphs.
*
* @param attributeName name of the attribute
* @param type entity subclass
* @return subgraph for the attribute
* @throws IllegalArgumentException if the attribute is not an
* attribute of this managed type.
* @throws IllegalArgumentException if the attribute's target type
* is not a managed type
* @throws IllegalStateException if this EntityGraph has been
* statically defined
*/
public Subgraph addSubgraph(String attributeName, Class type);
/**
* Add a node to the graph that corresponds to a map key
* that is a managed type. This allows for construction of
* multi-node entity graphs that include related managed types.
*
* @param attribute attribute
* @return subgraph for the key attribute
* @throws IllegalArgumentException if the attribute's target type
* is not an entity
* @throws IllegalStateException if this EntityGraph has been
* statically defined
*/
public Subgraph addKeySubgraph(Attribute attribute);
/**
* Add a node to the graph that corresponds to a map key
* that is a managed type with inheritance. This allows for
* construction of multi-node entity graphs that include related
* managed types. Subclass subgraphs will include the specified
* attributes of superclass subgraphs.
*
* @param attribute attribute
* @param type entity subclass
* @return subgraph for the key attribute
* @throws IllegalArgumentException if the attribute's target type
* is not an entity
* @throws IllegalStateException if this EntityGraph has been
* statically defined
*/
public Subgraph addKeySubgraph(Attribute attribute, Class type);
/**
* Add a node to the graph that corresponds to a map key
* that is a managed type. This allows for construction of
* multi-node entity graphs that include related managed types.
*
* @param attributeName name of the attribute
* @return subgraph for the key attribute
* @throws IllegalArgumentException if the attribute is not an
* attribute of this entity.
* @throws IllegalArgumentException if the attribute's target type
* is not an entity
* @throws IllegalStateException if this EntityGraph has been
* statically defined
*/
public Subgraph addKeySubgraph(String attributeName);
/**
* Add a node to the graph that corresponds to a map key
* that is a managed type with inheritance. This allows for
* construction of multi-node entity graphs that include related
* managed types. Subclass subgraphs will automatically include
* the specified attributes of superclass subgraphs
*
* @param attributeName name of the attribute
* @param type entity subclass
* @return subgraph for the key attribute
* @throws IllegalArgumentException if the attribute is not an
* attribute of this entity.
* @throws IllegalArgumentException if the attribute's target type
* is not a managed type
* @throws IllegalStateException if this EntityGraph has been
* statically defined
*/
public Subgraph addKeySubgraph(String attributeName, Class type);
/**
* Add additional attributes to this entity graph that
* correspond to attributes of subclasses of this EntityGraph's
* entity type. Subclass subgraphs will automatically include the
* specified attributes of superclass subgraphs.
*
* @param type entity subclass
* @return subgraph for the subclass
* @throws IllegalArgumentException if the type is not an entity type
* @throws IllegalStateException if the EntityGraph has been
* statically defined
*/
public Subgraph addSubclassSubgraph(Class type);
/**
* Return the attribute nodes of this entity that are included in
* the entity graph.
* @return attribute nodes for the annotated entity type or empty
* list if none have been defined
*/
public List> getAttributeNodes();
}