1 /*
2 * Copyright 2014 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
17 package org.openehealth.ipf.platform.camel.hl7;
18
19 import ca.uhn.hl7v2.HL7Exception;
20 import ca.uhn.hl7v2.model.Message;
21 import org.apache.camel.Exchange;
22 import org.apache.camel.Expression;
23 import org.openehealth.ipf.modules.hl7.HL7v2Exception;
24 import org.openehealth.ipf.modules.hl7.message.MessageUtils;
25
26 /**
27 * Expression that returns a copy of the current message and its {@link ca.uhn.hl7v2.HapiContext}
28 */
29 class CopyMessageExpression implements Expression {
30
31 public CopyMessageExpression() {}
32
33 @Override
34 public <T> T evaluate(Exchange exchange, Class<T> type) {
35 try {
36 Message msg = HL7v2.bodyMessage(exchange);
37 Message result = MessageUtils.copy(msg);
38 return type.cast(result);
39 } catch (HL7Exception e) {
40 throw new HL7v2Exception(e);
41 }
42
43 }
44 }