1 /*
2 * Copyright 2009 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.ihe.hl7v2.intercept.producer;
17
18 import ca.uhn.hl7v2.model.Message;
19 import org.apache.camel.Exchange;
20 import org.apache.camel.ExchangePattern;
21 import org.apache.commons.lang3.ClassUtils;
22 import org.openehealth.ipf.platform.camel.ihe.core.InterceptorSupport;
23 import org.openehealth.ipf.platform.camel.ihe.hl7v2.HL7v2Endpoint;
24 import org.openehealth.ipf.platform.camel.ihe.hl7v2.Hl7v2AdaptingException;
25 import org.openehealth.ipf.platform.camel.ihe.hl7v2.Hl7v2MarshalUtils;
26
27
28 /**
29 * Producer-side Camel interceptor which creates a {@link Message}
30 * from various possible request types.
31 *
32 * @author Dmytro Rud
33 */
34 public class ProducerAdaptingInterceptor extends InterceptorSupport<HL7v2Endpoint> {
35
36 private final String charsetName;
37
38
39 /**
40 * Constructor which enforces the use of a particular character set.
41 * The given value will be propagated to the Camel exchange property
42 * {@link Exchange#CHARSET_NAME}, rewriting its old content.
43 *
44 * @param charsetName
45 * character set to use in all data transformations.
46 */
47 public ProducerAdaptingInterceptor(String charsetName) {
48 super();
49 this.charsetName = charsetName;
50 }
51
52
53 /**
54 * Constructor which does not enforce the use of a particular character set.
55 * When the Camel exchange does not contain property {@link Exchange#CHARSET_NAME},
56 * the default system character set will be used.
57 */
58 public ProducerAdaptingInterceptor() {
59 this(null);
60 }
61
62
63 /**
64 * Converts outgoing request to a {@link Message}
65 * and performs some exchange configuration.
66 */
67 @Override
68 public void process(Exchange exchange) throws Exception {
69 if (charsetName != null) {
70 exchange.setProperty(Exchange.CHARSET_NAME, charsetName);
71 }
72 Message msg = Hl7v2MarshalUtils.extractHapiMessage(
73 exchange.getIn(),
74 characterSet(exchange),
75 getEndpoint().getHl7v2TransactionConfiguration().getParser());
76
77 if (msg == null) {
78 throw new Hl7v2AdaptingException("Cannot create HL7v2 message from the given " +
79 ClassUtils.getSimpleName(exchange.getIn().getBody(), "<null>"));
80 }
81
82 exchange.getIn().setBody(msg);
83 exchange.setPattern(ExchangePattern.InOut);
84
85 // run the route
86 getWrappedProcessor().process(exchange);
87 }
88 }