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1   /*
2    * Copyright 2011 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.hl7v2ws;
17  
18  import org.apache.cxf.message.Exchange;
19  import org.openehealth.ipf.commons.ihe.ws.cxf.AbstractWsRejectionHandlingStrategy;
20  import org.openehealth.ipf.commons.ihe.ws.utils.SoapUtils;
21  
22  /**
23   * Rejection handling strategy base for HL7v2-based WS transactions.
24   * @author Dmytro Rud
25   */
26  abstract public class AbstractHl7v2WsRejectionHandlingStrategy extends AbstractWsRejectionHandlingStrategy {
27  
28      /**
29       * Specific rejection determination logic tor HL7v2-based WS transactions.
30       * @param cxfExchange
31       *      CXF exchange under consideration.
32       * @return
33       *      <code>true</code> when the exchange contains an outbound
34       *      SOAP Fault or an HL7v2 NAK with code 'AR' or 'CR'.
35       */
36      @Override
37      public boolean isRejected(Exchange cxfExchange) {
38          // exchange contains SOAP fault
39          if(super.isRejected(cxfExchange)) {
40              return true;
41          }
42  
43          // exchange does not contain a valid HL7v2 message at all
44          // or does contain an HL7v2 NAK with code 'AR' or 'CR'
45          String response = SoapUtils.extractOutgoingPayload(cxfExchange);
46          try {
47              int pos = response.indexOf("\r\nMSA");
48              return ((pos < 0) || (response.charAt(pos + 7) == 'R'));
49          } catch (Exception e) {
50              return true;
51          }
52      }
53  }