Examples of Hl7InputStreamMessageIterator

ca.uhn.hl7v2.util.Hl7InputStreamMessageIterator

Reads from an {@link InputStream} containing a stream of encoded HL7 messagesand iterates over those messages. This class is geared towards reading from files, and tries to be very lenient about the format of the stream, specifically concerning control characters and line endings. It should be safe to provide a stream containing Windows or Unix line endings (which will be treated as segment delimiters). It is also safe to provide a stream containing MLLP control blocks before and after each message (although these will not be validated! Do not use this class to read MLLP messages from a socket stream!)

The input stream could, for example, be a FileInputStream reading from a text file containing a number of HL7 messages in plain text format.

Usage note: If an IOException occurs while reading from the streamor a message parsing exception occurs, it will be thrown as an unchecked {@link ParseFailureError}

    // It's generally a good idea to buffer file IO
    is = new BufferedInputStream(is);
    
    // The following class is a HAPI utility that will iterate over
    // the messages which appear over an InputStream
    Hl7InputStreamMessageIterator iter = new Hl7InputStreamMessageIterator(is);
    
    while (iter.hasNext()) {
      
      Message next = iter.next();
      
      // Do something with the message
      
    }

     * send out. 
     */
    FileReader reader = new FileReader("message_file.txt");
    
    // Create an iterator to iterate over all the messages
    Hl7InputStreamMessageIterator iter = new Hl7InputStreamMessageIterator(reader);
    
    ConnectionHub connectionHub = ConnectionHub.getInstance();
    Connection conn = null;
    
    while (iter.hasNext()) {
      
      Message next = iter.next();
      
      /* If we don't already have a connection, create one.
       * Note that unless something goes wrong, it's very common
       * to keep reusing the same connection until we are done
       * sending messages. Many systems keep a connection open

    // It's generally a good idea to buffer file IO
    is = new BufferedInputStream(is);
    
    // The following class is a HAPI utility that will iterate over
    // the messages which appear over an InputStream
    Hl7InputStreamMessageIterator iter = new Hl7InputStreamMessageIterator(is);
    
    while (iter.hasNext()) {
      
      Message next = iter.next();
      
      // Do something with the message
      
    }

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Examples of Hl7InputStreamMessageIterator

Examples of ca.uhn.hl7v2.util.Hl7InputStreamMessageIterator

Examples of ca.uhn.hl7v2.util.Hl7InputStreamMessageIterator

Examples of ca.uhn.hl7v2.util.Hl7InputStreamMessageIterator