PrimaryKey.java example

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/**
 * Copyright 2014 Duan Bingnan
 * 
 * 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 org.pinus4j.entity.annotations;

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;

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
/**
 * 主键注解，
 *
 * @author duanbn
 */
public @interface PrimaryKey {

    /**
     * 字段名
     * 
     * @return
     */
    String name() default "";

    /**
     * 注释
     */
    String comment() default "";

    /**
     * 字段长度
     */
    int length() default 0;

    /**
     * 是否自增
     * 
     * @return
     */
    boolean isAutoIncrement() default false;
}