1 /**
2 *
3 * Copyright (C) 2011 Cloud Conscious, LLC. <info@cloudconscious.com>
4 *
5 * ====================================================================
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 * ====================================================================
18 */
19 package org.jclouds.rest.annotations;
20
21 import static java.lang.annotation.ElementType.METHOD;
22 import static java.lang.annotation.ElementType.PARAMETER;
23 import static java.lang.annotation.RetentionPolicy.RUNTIME;
24
25 import java.lang.annotation.Retention;
26 import java.lang.annotation.Target;
27
28 import javax.ws.rs.PathParam;
29
30 import com.google.common.base.Function;
31
32 /**
33 * Extracts the value of a parameter from an object. If placed on a method, the function will be
34 * presented with a Object [] from the method args used to derive the value;
35 *
36 * @see PathParam
37 * @author Adrian Cole
38 */
39 @Target( { METHOD, PARAMETER })
40 @Retention(RUNTIME)
41 public @interface ParamParser {
42 Class<? extends Function<Object, String>> value();
43 }