Package org.dellroad.hl7.io

Class HL7FileReader

java.lang.Object

org.dellroad.hl7.io.HL7FileReader

All Implemented Interfaces:

Closeable, AutoCloseable, HL7Reader

public class HL7FileReader
extends Object
implements HL7Reader, Closeable

Reads in HL7 messages in "file format".

The "file format" is as follows:

• Each message begins with an MSH segment
• Each segment is terminated by a CR, LF, or CR-LF
• Blank and whitespace-only lines are ignored
• Lines starting with '#' are ignored

Field Summary

Fields

Modifier and Type	Field	Description
protected BufferedReader	reader

Constructor Summary

Constructors

Constructor	Description
HL7FileReader(InputStream in)	Convenience constructor.
HL7FileReader(Reader in)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the underlying reader.
protected String	nextLine()	Read next non-ignorable line.
protected void	pushback(String line)	Save the line for next time.
HL7Message	readMessage()	Read next message from the underlying stream.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

reader

protected final BufferedReader reader

Constructor Detail

HL7FileReader

public HL7FileReader(Reader in)

Constructor.

Parameters:

in - underlying reader

HL7FileReader

public HL7FileReader(InputStream in)

Convenience constructor. Equivalent to:

HL7FileReader(new InputStreamReader(in, StandardCharsets.ISO_8859_1))

Parameters:

in - underlying input stream

Method Detail

readMessage

public HL7Message readMessage()
                       throws IOException,
                              HL7ContentException

Read next message from the underlying stream.

Specified by:

readMessage in interface HL7Reader

Returns:

next message read

Throws:

EOFException - if there is no more input

HL7ContentException - if a malformed message is read

IOException - if an error occurs on the underlying stream

pushback

protected void pushback(String line)

Save the line for next time.

Parameters:

line - line to push back

Throws:

RuntimeException - if there is already one saved

nextLine

protected String nextLine()
                   throws IOException

Read next non-ignorable line.

Returns:

next relevant line, or null for EOF

Throws:

IOException - if an I/O error occurs

close

public void close()
           throws IOException

Closes the underlying reader.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException