org.jalore.regexp
Class RegexpLogReader

java.lang.Object
  org.jalore.regexp.RegexpLogReader

All Implemented Interfaces:

LogReader

public class RegexpLogReader
extends java.lang.Object
implements LogReader

Implementation of LogReader to read a log using a regular expression.

Author:

Nicolas Dutertry

Constructor Summary

RegexpLogReader(java.io.Reader reader, java.lang.String pattern, java.util.Map<java.lang.String,java.lang.Integer> propertyToGroup)
Constructs a RegexpLogReader.

Method Summary

boolean	hasMoreMessages() Tests if this reader contains more log messages.
LogMessage	nextMessage() Returns the next log message of this reader or null if no more message is available.

Methods inherited from class java.lang.Object

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

Constructor Detail

RegexpLogReader

public RegexpLogReader(java.io.Reader reader,
                       java.lang.String pattern,
                       java.util.Map<java.lang.String,java.lang.Integer> propertyToGroup)
                throws java.io.IOException

Constructs a RegexpLogReader.

The given pattern must only describe the first line of messages or a part of the first line. The regular expression groups are converted into message properties using the map propertyToGroup.

Parameters:

reader - the reader used to read the log

pattern - regular expression pattern describing first line of messages

propertyToGroup - maps property names to group positions

Throws:

java.io.IOException - if an error occurred while reading the log

Method Detail

hasMoreMessages

public boolean hasMoreMessages()

Description copied from interface: LogReader

Tests if this reader contains more log messages.

Specified by:

hasMoreMessages in interface LogReader

Returns:

true if and only if this reader contains at least one more log message to provide; false otherwise.

nextMessage

public LogMessage nextMessage()
                       throws java.io.IOException

Description copied from interface: LogReader

Returns the next log message of this reader or null if no more message is available.

Specified by:

nextMessage in interface LogReader

Returns:

the next log message

Throws:

java.io.IOException - if an error occurred while reading the next message