org.ucl.xpath.function
Class FnError

java.lang.Object
  org.ucl.xpath.function.Function
      org.ucl.xpath.function.FnError

public class FnError

extends Function

The fn:error function causes the evaluation of the outermost XQuery or transformation to stop. While this function never returns a value, an error, if it occurs, is returned to the external processing environment as an xs:anyURI or an xs:QName. The error xs:anyURI is derived from the error xs:QName. An error xs:QName with namespace URI NS and local part LP will be returned as the xs:anyURI NS#LP. The method by which the xs:anyURI or xs:QName is returned to the external processing environment is implementation dependent.

Field Summary

Fields inherited from class org.ucl.xpath.function.Function

_arity, _fl, _name

Constructor Summary

FnError()
Constructor for FnError.

Method Summary

static ResultSequence	error(java.util.Collection args) Error operation.
ResultSequence	evaluate(java.util.Collection args) Evaluate arguments.

Methods inherited from class org.ucl.xpath.function.Function

arity, convert_argument, convert_arguments, dynamic_context, name, set_function_library, signature, signature, signature, static_context

Methods inherited from class java.lang.Object

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

Constructor Detail

FnError

public FnError()

Constructor for FnError.

Method Detail

evaluate

public ResultSequence evaluate(java.util.Collection args)
                        throws DynamicError

Evaluate arguments.

Specified by:

evaluate in class Function

Parameters:

args - argument expressions.

Returns:

Result of evaluation.

Throws:

DynamicError - Dynamic error.

error

public static ResultSequence error(java.util.Collection args)
                            throws DynamicError

Error operation.

Parameters:

args - Result from the expressions evaluation.

Returns:

Result of fn:error operation.

Throws:

DynamicError - Dynamic error.