public override ResultSequence nilled()
{
if (_value is PSVIElementNSImpl)
{
PSVIElementNSImpl psviElement = (PSVIElementNSImpl)_value;
return(XSBoolean.valueOf(psviElement.Nil));
}
else
{
return(XSBoolean.FALSE);
}
}
/// <summary>
/// Creates a new result sequence consisting of the retrievable boolean value
/// in the supplied result sequence
/// </summary>
/// <param name="arg">
/// The result sequence from which to extract the boolean value. </param>
/// <exception cref="DynamicError"> </exception>
/// <returns> A new result sequence consisting of the boolean value supplied. </returns>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public org.eclipse.wst.xml.xpath2.api.ResultSequence constructor(org.eclipse.wst.xml.xpath2.api.ResultSequence arg) throws org.eclipse.wst.xml.xpath2.processor.DynamicError
public override ResultSequence constructor(ResultSequence arg)
{
if (arg.empty())
{
return(ResultBuffer.EMPTY);
}
Item anyType = arg.first();
if (anyType is XSDuration || anyType is CalendarType || anyType is XSBase64Binary || anyType is XSHexBinary || anyType is XSAnyURI)
{
throw DynamicError.invalidType();
}
string str_value = anyType.StringValue;
if (!(isCastable(anyType, str_value)))
{
throw DynamicError.cant_cast(null);
}
return(XSBoolean.valueOf(!isFalse(str_value)));
}