/** * * Copyright 2014 The Darks ORM Project (Liu lihua) * * 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 darks.orm.annotation; import java.lang.annotation.Documented; import java.lang.annotation.ElementType; import java.lang.annotation.Inherited; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target; /** * Indicates the One to one relation mapping model * <p> * <h1>OneToOne.java</h1> * <p> * For example: * <p> * If you use the "semi-automatic" form, the need to manually write * SQL statements * * <pre> * @OneToOne(resultType = Depart.class, SQL = "select * from t_depart where depart_id = ?") * public Depart getUserDepart() { * return userDepart; * } * </pre> * * If you use the "automation" form, only need to specify the target * class key attribute * * <pre> * @OneToOne(resultType = Depart.class, mappedBy = "departId", mappedType = MappedType.EntityType) * public Depart getUserDepart() { * return userDepart; * } * </pre> * * @author Liu LiHua * @version 1.0.0 v05/01/2012 * @since JDK1.5 * @see OneToMany * @see ManyToOne */ @Documented @Inherited @Retention(RetentionPolicy.RUNTIME) @Target(ElementType.METHOD) public @interface OneToOne { /** * If you use the "automation" form, need to set the mappedBy to * the primary key attribute of target class. If not, does not need the * assignment. */ String mappedBy() default ""; /** * If you use the "semi-automatic" form, need to write SQL query * statement. If not, does not need the assignment. */ String SQL() default ""; /** * The method returns the class type */ Class<?> resultType(); /** * Relation mapping types. "automation" or * "semi-automatic" * * @see MappedType */ MappedType mappedType() default MappedType.SqlType; }