/* * Copyright 2006-2010 Amazon Technologies, Inc. or its affiliates. * Amazon, Amazon.com and Carbonado are trademarks or registered trademarks * of Amazon Technologies, Inc. or its affiliates. All rights reserved. * * 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.amazon.carbonado; import java.lang.annotation.*; /** * Identifies a {@link Storable} property as being a member of the primary * key. All Storable types must have at least one property belonging to the * primary key. * *

Example:

 * @PrimaryKey("userInfoID")
 * public interface UserInfo extends Storable<UserInfo> {
 *     long getUserInfoID();
 *     void setUserInfoID(long id);
 *
 *     ...
 * }
 * 
* * @author Brian S O'Neill * @see AlternateKeys * @see Sequence */ @Documented @Retention(RetentionPolicy.RUNTIME) @Target({ElementType.TYPE}) public @interface PrimaryKey { /** * A list of property names, which may be prefixed with '+' or '-' to * indicate a preference for ascending or descending order. */ String[] value(); }