1 /*
2 * Copyright 2008 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.openehealth.ipf.platform.camel.core.process;
17
18 import org.apache.camel.Exchange;
19 import org.apache.camel.Processor;
20 import org.apache.camel.Producer;
21
22 /**
23 * Implements a validation process. The incoming {@link Exchange} is validated
24 * against a <code>validator</code> (a {#link Processor}) set at construction
25 * time. If validation succeeds the validation result is returned to the
26 * initiator and the in-message of the incoming {@link Exchange} is forwarded to
27 * the next processor using an in-only {@link Exchange}. If validation fails
28 * (validator returned fault or exception) then the validation fault or
29 * exception is returned to the initiator and processing stops.
30 *
31 * @author Martin Krasser
32 */
33 public class Validation extends Responder {
34
35 /**
36 * Creates a new {@link Validation} process.
37 *
38 * @param validator
39 * processor that creates a validation response.
40 */
41 public Validation(Processor validator) {
42 super(validator);
43 }
44
45 /**
46 * Creates a new {@link Validation} process.
47 *
48 * @param validator
49 * producer that creates a validation response.
50 */
51 public Validation(Producer validator) {
52 super(validator);
53 }
54
55 /**
56 * Returns <code>false</code> if the <code>response</code> exchange
57 * failed indicating that processing shall stop.
58 *
59 * @param original
60 * original message exchange.
61 * @param response
62 * response message exchange.
63 * @return <code>false</code> if <code>response</code> failed,
64 * <code>true</code> otherwise.
65 */
66 @Override
67 protected boolean process(Exchange original, Exchange response) {
68 return !response.isFailed();
69 }
70
71 }