2 Copyright 2010 Sun Microsystems, Inc.
3 All rights reserved. Use is subject to license terms.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; version 2 of the License.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 package com.mysql.clusterj.annotation;
21 import java.lang.annotation.ElementType;
22 import java.lang.annotation.Retention;
23 import java.lang.annotation.RetentionPolicy;
24 import java.lang.annotation.Target;
27 * Annotation on a class or member to define the partition key.
28 * If annotating a class or interface, either a single
29 * column or multiple columns can be specified.
30 * If annotating a member, neither column nor columns should be specified.
32 @Target({ElementType.TYPE, ElementType.FIELD, ElementType.METHOD})
33 @Retention(RetentionPolicy.RUNTIME)
34 public @interface PartitionKey
37 * Name of the column to use for the partition key
38 * @return the name of the column to use for the partition key
40 String column() default "";
43 * The column(s) for the partition key
44 * @return the column(s) for the partition key
46 Column[] columns() default {};