net.eduvax.util

Class ConsoleErrHandler

java.lang.Object

net.eduvax.util.ConsoleErrHandler

All Implemented Interfaces:

ErrorHandler, Handler<Error>

public class ConsoleErrHandler
extends java.lang.Object
implements ErrorHandler

Console error handler. Text based error handler, using by default standard input and output to interact with user : reporting errors and choices, reading user responses.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	_error error flag. true when error handled since last check()
private java.util.Scanner	_input input reader
private int	_mode Error handling mode (user interactio proto).
private static java.lang.String[]	_msgId standard confirmation messages ids
private java.io.PrintStream	_output stream for message output

Constructor Summary

Constructors

Constructor and Description
ConsoleErrHandler(int m) Create new console error handler.
ConsoleErrHandler(int m, java.io.InputStream in, java.io.PrintStream out) Create new console error handler.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	checkAndReset() Checks for error and reset handler.
boolean	checkOnly() Checks for error.
void	handle(Error e) handling one object

Methods inherited from class java.lang.Object

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

Field Detail

_mode

private int _mode

Error handling mode (user interactio proto). one of ErrHandlerFactory.M_* consts.

_error

private boolean _error

error flag. true when error handled since last check()

_input

private java.util.Scanner _input

input reader

_output

private java.io.PrintStream _output

stream for message output

_msgId

private static final java.lang.String[] _msgId

standard confirmation messages ids

Constructor Detail

ConsoleErrHandler

public ConsoleErrHandler(int m)

Create new console error handler. System.in and System.out are defaults IOs

Parameters:

m - handler mode.

ConsoleErrHandler

public ConsoleErrHandler(int m,
                 java.io.InputStream in,
                 java.io.PrintStream out)

Create new console error handler.

Parameters:

m - handler mode.

in - user responses input

Method Detail

handle

public void handle(Error e)

Description copied from interface: Handler

handling one object

Specified by:

handle in interface Handler<Error>

Parameters:

e - object to handle

checkOnly

public boolean checkOnly()

Description copied from interface: ErrorHandler

Checks for error. Only checks. This method doesn't change the handler status.

Specified by:

checkOnly in interface ErrorHandler

Returns:

- true if no error handled since last check(). - any other depending of error handling and user interaction.

checkAndReset

public boolean checkAndReset()

Description copied from interface: ErrorHandler

Checks for error and reset handler. After checking, the handler is reset to its no error state.

Specified by:

checkAndReset in interface ErrorHandler