package ca.uhn.hl7v2.hoh.hapi.api;
import java.io.IOException;
import java.io.Writer;
import ca.uhn.hl7v2.HL7Exception;
import ca.uhn.hl7v2.hoh.api.IResponseSendable;
import ca.uhn.hl7v2.hoh.encoder.EncodingStyle;
import ca.uhn.hl7v2.hoh.encoder.ResponseCode;
import ca.uhn.hl7v2.model.Message;
import ca.uhn.hl7v2.parser.GenericParser;
import ca.uhn.hl7v2.parser.Parser;
import ca.uhn.hl7v2.parser.XMLParser;
import ca.uhn.hl7v2.util.Terser;
public class MessageSendable implements IResponseSendable<Message> {
private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(MessageSendable.class);
private final Message myMessage;
private final EncodingStyle myEncodingStyle;
private ResponseCode myResponseCode;
private String myRawMessage;
/**
* Constructor
*
* @param theMessage
* The message to return
* @throws HL7Exception
* If message could not be encoded
*/
public MessageSendable(Message theMessage) throws HL7Exception {
this(theMessage, theMessage.getParser());
}
/**
* Constructor
*
* @param theMessage
* The message to return
* @param theParser
* The parser to use to encode the message
* @throws HL7Exception
* If message could not be encoded
*/
public MessageSendable(Message theMessage, Parser theParser) throws HL7Exception {
if (theMessage == null) {
throw new NullPointerException("Raw Message may not be null");
}
myMessage = theMessage;
myEncodingStyle = detectEncodingStyle(theParser);
myRawMessage = theParser.encode(myMessage);
}
private EncodingStyle detectEncodingStyle(Parser theParser) {
if (theParser instanceof XMLParser) {
return EncodingStyle.XML;
} else if (theParser instanceof GenericParser && ((GenericParser) theParser).isPipeParserPrimary() == false) {
return EncodingStyle.XML;
} else {
return EncodingStyle.ER7;
}
}
public void writeMessage(Writer theWriter) throws IOException {
theWriter.append(myRawMessage);
theWriter.flush();
}
public EncodingStyle getEncodingStyle() {
return myEncodingStyle;
}
public ResponseCode getResponseCode() {
if (myResponseCode == null) {
try {
myResponseCode = ResponseCode.detect(new Terser(myMessage).get("/MSA-2"));
if (myResponseCode == null) {
throw new HL7Exception("No response code in message, this is probably an error");
}
} catch (HL7Exception e) {
ourLog.info("Could not detect response code in message", e);
myResponseCode = ResponseCode.HTTP_500_INTERNAL_SERVER_ERROR;
}
}
return myResponseCode;
}
public Message getMessage() {
return myMessage;
}
}