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TuGraph-DB-OGM is an Object Graph Mapping Library for TuGraph.

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/*
 * Copyright (c) 2002-2022 "Neo4j,"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.antgroup.tugraph.ogm.annotation;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Identifies a domain entity as being backed by a relationship in the graph.
 * This annotation is always needed for relationship-backed entities.
 * The type attribute supplies the relationship type in the graph.
 *
 * @author Michal Bachman
 */
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
public @interface RelationshipEntity {

    String TYPE = "type";

    @ValueFor(TYPE)
    String value() default "";

    String type() default "";
}