/*
* Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.wso2.carbon.business.messaging.hl7.message;
import org.apache.axis2.transport.MessageFormatter;
import org.apache.axis2.transport.http.util.URLTemplatingUtil;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.AxisFault;
import org.apache.axis2.Constants;
import org.apache.axiom.om.OMOutputFormat;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.soap.SOAPFault;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.carbon.business.messaging.hl7.HL7Constants;
import java.io.OutputStream;
import java.io.IOException;
import java.net.URL;
import ca.uhn.hl7v2.model.Message;
import ca.uhn.hl7v2.model.DataTypeException;
import ca.uhn.hl7v2.model.v26.message.ACK;
import ca.uhn.hl7v2.parser.DefaultXMLParser;
import ca.uhn.hl7v2.parser.PipeParser;
import ca.uhn.hl7v2.HL7Exception;
/*
* Copyright (c) 2005-2009, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
public class HL7MessageFormatter implements MessageFormatter {
private static final Log log = LogFactory.getLog(HL7MessageFormatter.class);
/**
* {@inheritdoc }*
*/
public byte[] getBytes(MessageContext messageContext, OMOutputFormat omOutputFormat)
throws AxisFault {
return new byte[0];
}
/**
* {@inheritdoc }*
*/
public void writeTo(MessageContext msgCtx,
OMOutputFormat omOutputFormat,
OutputStream outputStream,
boolean b) throws AxisFault {
OMElement omElement = msgCtx.getEnvelope().getBody().getFirstElement().getFirstElement();
if (log.isDebugEnabled()) {
log.debug("Inside the HL7 formatter" + omElement.toString());
}
if (msgCtx.getFLOW() == MessageContext.OUT_FAULT_FLOW || msgCtx.getEnvelope().hasFault()) {
SOAPFault soapFault = msgCtx.getEnvelope().getBody().getFault();
ACK ack = new ACK();
try {
//TODO : need to complete the values of the complete hl7 message, this will not properly construct by the parser
ack.getMSH().getFieldSeparator().setValue(HL7Constants.HL7_FIELD_SEPARATOR);
ack.getMSH().getEncodingCharacters().setValue(HL7Constants.HL7_ENCODING_CHARS);
ack.getMSA().getAcknowledgmentCode().setValue(HL7Constants.HL7_ACK_CODE_AR);
ack.getERR().getErrorCodeAndLocation(0).getCodeIdentifyingError().getIdentifier()
.setValue("Backend service reject the value");
String msg = new PipeParser().encode(ack);
if (log.isDebugEnabled()) {
log.debug("Generate HL7 error : " + ack);
}
outputStream.write(msg.getBytes());
outputStream.flush();
outputStream.close();
msgCtx.setProperty(Constants.Configuration.CONTENT_TYPE,HL7Constants.HL7_CONTENT_TYPE);
} catch (DataTypeException e) {
handleException("Error on creating HL7 Error segment", e);
} catch (HL7Exception e) {
handleException("Error on creating HL7 Error segment", e);
} catch (IOException e) {
handleException("Error on writing HL7 Error to output stream", e);
}
} else {
try {
String xmlFormat = omElement.toString();
Message message = new DefaultXMLParser().parse(xmlFormat);
String msg = new PipeParser().encode(message);
if (log.isDebugEnabled()) {
log.debug("Message inside the formatter : " + message);
}
outputStream.write(msg.getBytes());
outputStream.flush();
outputStream.close();
} catch (Exception e) {
handleException("Ecepion occured during HL7 message creation", e);
}
}
}
/**
* {@inheritdoc }*
*/
public String getContentType(MessageContext msgCtx,
OMOutputFormat omOutputFormat,
String s) {
String contentType = (String) msgCtx.getProperty(Constants.Configuration.CONTENT_TYPE);
if (contentType == null) {
contentType = HL7Constants.HL7_CONTENT_TYPE;
}
String encoding = omOutputFormat.getCharSetEncoding();
if (encoding != null) {
contentType += "; charset=" + encoding;
}
return contentType;
}
/**
* {@inheritdoc }*
*/
public URL getTargetAddress(MessageContext messageContext,
OMOutputFormat omOutputFormat,
URL targetURL) throws AxisFault {
return URLTemplatingUtil.getTemplatedURL(targetURL, messageContext, false);
}
/**
* {@inheritdoc }*
*/
public String formatSOAPAction(MessageContext messageContext,
OMOutputFormat omOutputFormat,
String soapAction) {
return soapAction;
}
private void handleException(String message, Exception e) {
log.error(message, e);
throw new RuntimeException(message, e);
}
}