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• Subgraph.java

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javax.persistence.Subgraph Maven / Gradle / Ivy

/*
 * Copyright (c) 2011, 2019 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 - 2.1

package javax.persistence;

import javax.persistence.metamodel.Attribute;
import java.util.List;

/**
 * This type represents a subgraph for an attribute node that
 * corresponds to a Managed Type. Using this class, an entity subgraph
 * can be embedded within an EntityGraph.
 *
 * @param  The type of the attribute.
 *
 * @see EntityGraph
 * @see AttributeNode
 * @see NamedSubgraph
 *
 * @since 2.1
 */
public interface Subgraph {

    /**
     * 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 managed type.
     * @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 this 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 this 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 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);

    /**
     * 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
     * multinode 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 a managed type 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 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 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 a managed type
     * @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 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 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);

    /**
     * Return the attribute nodes corresponding to the attributes of
     * this managed type that are included in the subgraph.
     * @return list of attribute nodes included in the subgraph or
     * empty List if none have been defined
     */
    public List> getAttributeNodes();

    /**
     * Return the type for which this subgraph was defined.
     * @return managed type referenced by the subgraph
     */
    public Class getClassType();
}