org.apache.commons.scxml
Interface ErrorReporter

All Known Implementing Classes:

SimpleErrorReporter, Tracer

public interface ErrorReporter

An interface for reporting SCXML errors to the host environment, containing the definition of commonly occuring errors while executing SCXML documents.

Field Summary

static String	EXPRESSION_ERROR An expression language error.
static String	ILLEGAL_CONFIG Illegal state machine configuration.
static String	ILLEGAL_INITIAL An initial state for a composite state whose Transition does not.
static String	NO_INITIAL Missing initial state for a composite state or for the smxml root.
static String	NON_DETERMINISTIC Non-deterministic situation has occured - there are more than one enabled transitions in conflict.
static String	UNDEFINED_VARIABLE A variable referred to by assign name attribute is undefined.
static String	UNKNOWN_ACTION Unknown action - unsupported executable content.

Method Summary

void	onError(String errCode, String errDetail, Object errCtx) Handler for reporting an error.

Field Detail

NO_INITIAL

public static final String NO_INITIAL

Missing initial state for a composite state or for the smxml root.

See Also:

SCXML.getInitialState(), State.getInitial(), Constant Field Values

ILLEGAL_INITIAL

public static final String ILLEGAL_INITIAL

An initial state for a composite state whose Transition does not. Map to a descendant of the composite state.

See Also:

Constant Field Values

UNKNOWN_ACTION

public static final String UNKNOWN_ACTION

Unknown action - unsupported executable content. List of supported. actions: assign, cancel, elseif, else, if, log, send, var

See Also:

Constant Field Values

ILLEGAL_CONFIG

public static final String ILLEGAL_CONFIG

Illegal state machine configuration. Either a parallel exists which does not have all its AND sub-states active or there are multiple enabled OR states on the same level.

See Also:

Constant Field Values

NON_DETERMINISTIC

public static final String NON_DETERMINISTIC

Non-deterministic situation has occured - there are more than one enabled transitions in conflict.

See Also:

Constant Field Values

UNDEFINED_VARIABLE

public static final String UNDEFINED_VARIABLE

A variable referred to by assign name attribute is undefined.

See Also:

Constant Field Values

EXPRESSION_ERROR

public static final String EXPRESSION_ERROR

An expression language error.

See Also:

Constant Field Values

Method Detail

onError

public void onError(String errCode,
                    String errDetail,
                    Object errCtx)

Handler for reporting an error.

Parameters:

errCode - one of the ErrorReporter's constants

errDetail - human readable description

errCtx - typically an SCXML element which caused an error, may be accompanied by additional information