org.exolab.adaptx.xslt.util
Class DefaultObserver

java.lang.Object
  |
  +--org.exolab.adaptx.xslt.util.DefaultObserver

All Implemented Interfaces:

ErrorObserver, MessageObserver

public class DefaultObserver

extends java.lang.Object

implements MessageObserver, ErrorObserver

A simple implementation of MessageObserver and ErrorObserver. This observer is cascading, which means you can add observers to it, and it will cascade notifications.

Version:

$Revision: 1.1.1.1 $ $Date: 2003/03/01 07:39:57 $

Author:

Keith Visco

Field Summary

Fields inherited from interface org.exolab.adaptx.util.ErrorObserver

FATAL, NORMAL, WARNING

Constructor Summary

DefaultObserver()
Creates a new SimpleMessageObserver which will print messages to the console.

DefaultObserver(boolean allErrorsFatal)
Creates a new SimpleMessageObserver which will print messages to the console.

DefaultObserver(java.io.Writer writer)
Creates a new SimpleMessageObserver which will print messages to the console.

DefaultObserver(java.io.Writer writer, boolean allErrorsFatal)
Creates a new SimpleMessageObserver which will print messages to the console.

Method Summary

void	addErrorObserver(ErrorObserver observer) Adds the given ErrorObserver to this DefaultObserver
void	addMessageObserver(MessageObserver observer) Adds the given MessageObserver to this DefaultObserver
void	receiveError(java.lang.Exception exception) Signals an error with normal level
void	receiveError(java.lang.Exception exception, int level) Signals an error with the given error level
void	receiveError(java.lang.Exception exception, java.lang.String message) Signals an error with normal level
void	receiveError(java.lang.Exception exception, java.lang.String message, int level) Signals an error with the given error level
void	receiveError(java.lang.String message) Signals an error message with normal level
void	receiveError(java.lang.String message, int level) Signals an error message with the given error level
void	receiveMessage(java.lang.String message) Notifies this observer of a new message
void	removeAllErrorObservers() Removes all the ErrorObservers from the cascading ErrorObserver list
void	removeAllMessageObservers() Removes all the MessageObservers from the cascading ErrorObserver list
void	removeErrorObserver(ErrorObserver observer) Removes the given ErrorObserver from the cascading ErrorObserver list
void	removeMessageObserver(MessageObserver observer) Removes the given MessageObserver from the cascading MessageObserver list
void	setWriter(java.io.Writer writer) Sets the Writer of this MessageObserver

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultObserver

public DefaultObserver()

Creates a new SimpleMessageObserver which will print messages to the console. A fatal error will cause a RuntimeException.

DefaultObserver

public DefaultObserver(boolean allErrorsFatal)

Creates a new SimpleMessageObserver which will print messages to the console. A fatal error will cause a RuntimeException.

Parameters:

allErrorsFatal - a boolean, when true will treat all errors as fatal errors (excludes warnings).

DefaultObserver

public DefaultObserver(java.io.Writer writer)

Creates a new SimpleMessageObserver which will print messages to the console. A fatal error will cause a RuntimeException.

Parameters:

writer - the Writer to print messages to. This writer may be null, to create a null sink.

DefaultObserver

public DefaultObserver(java.io.Writer writer,
                       boolean allErrorsFatal)

Creates a new SimpleMessageObserver which will print messages to the console. A fatal error will cause a RuntimeException.

Parameters:

writer - the Writer to print messages to. This writer may be null, to create a null sink.

allErrorsFatal - a boolean, when true will treat all errors as fatal errors (excludes warnings).

Method Detail

addErrorObserver

public void addErrorObserver(ErrorObserver observer)

Adds the given ErrorObserver to this DefaultObserver

Parameters:

observer - the ErrorObserver to add

addMessageObserver

public void addMessageObserver(MessageObserver observer)

Adds the given MessageObserver to this DefaultObserver

Parameters:

observer - the MessageObserver to add

receiveError

public void receiveError(java.lang.Exception exception)

Signals an error with normal level

Specified by:

receiveError in interface ErrorObserver

Parameters:

exception - the Exception that caused the error

receiveError

public void receiveError(java.lang.Exception exception,
                         java.lang.String message)

Signals an error with normal level

Specified by:

receiveError in interface ErrorObserver

Parameters:

exception - the Exception that caused the error

message - an option message, used when additional information can be provided.

receiveError

public void receiveError(java.lang.Exception exception,
                         int level)

Signals an error with the given error level

Specified by:

receiveError in interface ErrorObserver

Parameters:

exception - the Exception that caused the error

level - the error level

receiveError

public void receiveError(java.lang.Exception exception,
                         java.lang.String message,
                         int level)

Signals an error with the given error level

Specified by:

receiveError in interface ErrorObserver

Parameters:

exception - the Exception that caused the error

message - an option message, used when additional information can be provided.

level - the error level

receiveError

public void receiveError(java.lang.String message)

Signals an error message with normal level

Specified by:

receiveError in interface ErrorObserver

Parameters:

message - the error message

receiveError

public void receiveError(java.lang.String message,
                         int level)

Signals an error message with the given error level

Specified by:

receiveError in interface ErrorObserver

Parameters:

message - the error message

level - the error level

receiveMessage

public void receiveMessage(java.lang.String message)

Notifies this observer of a new message

Specified by:

receiveMessage in interface MessageObserver

Parameters:

message - the message to observe

removeAllErrorObservers

public void removeAllErrorObservers()

Removes all the ErrorObservers from the cascading ErrorObserver list

removeAllMessageObservers

public void removeAllMessageObservers()

Removes all the MessageObservers from the cascading ErrorObserver list

removeErrorObserver

public void removeErrorObserver(ErrorObserver observer)

Removes the given ErrorObserver from the cascading ErrorObserver list

Parameters:

observer - the ErrorObserver to remove

removeMessageObserver

public void removeMessageObserver(MessageObserver observer)

Removes the given MessageObserver from the cascading MessageObserver list

Parameters:

observer - the MessageObserver to remove

setWriter

public void setWriter(java.io.Writer writer)

Sets the Writer of this MessageObserver

Parameters:

writer - the Writer to print messages to