/// <summary>
/// Applies the filter on the column corresponding to the variable in the given datarow
/// </summary>
internal override Boolean ApplyFilter(DataRow row, Boolean applyNegation)
{
Boolean keepRow = true;
//Check is performed only if the row contains a column named like the filter's variable
if (row.Table.Columns.Contains(this.Variable.ToString()))
{
//Depends on "IsLiteral" filter, because we must find numeric literals
RDFIsLiteralFilter isLiteralFilter = new RDFIsLiteralFilter(this.Variable);
keepRow = isLiteralFilter.ApplyFilter(row, false);
//Successfull match if it is a literal whose value can be parsed into a "Decimal" object
if (keepRow)
{
String litVal = row[this.Variable.ToString()].ToString();
//Plain Literal
if (!litVal.Contains("^^") ||
litVal.EndsWith("^^") ||
RDFModelUtilities.GetUriFromString(litVal.Substring(litVal.LastIndexOf("^^", StringComparison.Ordinal) + 2)) == null)
{
try {
Decimal.Parse(litVal, CultureInfo.InvariantCulture);
}
catch {
keepRow = false;
}
}
//Typed Literal
else
{
try {
Decimal.Parse(litVal.Substring(0, litVal.LastIndexOf("^^", StringComparison.Ordinal)), CultureInfo.InvariantCulture);
}
catch {
keepRow = false;
}
}
}
//Apply the eventual negation
if (applyNegation)
{
keepRow = !keepRow;
}
}
return(keepRow);
}
/// <summary>
/// Applies the filter on the column corresponding to the variable in the given datarow
/// </summary>
internal override Boolean ApplyFilter(DataRow row, Boolean applyNegation) {
Boolean keepRow = true;
//Check is performed only if the row contains a column named like the filter's variable
if (row.Table.Columns.Contains(this.Variable.ToString())) {
//Depends on "IsLiteral" filter, because we must find numeric literals
RDFIsLiteralFilter isLiteralFilter = new RDFIsLiteralFilter(this.Variable);
keepRow = isLiteralFilter.ApplyFilter(row, false);
//Successfull match if it is a literal whose value can be parsed into a "Decimal" object
if (keepRow) {
String litVal = row[this.Variable.ToString()].ToString();
//Plain Literal
if (!litVal.Contains("^^") || litVal.EndsWith("^^") || RDFModelUtilities.GetUriFromString(litVal.Substring(litVal.LastIndexOf("^^", StringComparison.Ordinal) + 2)) == null) {
try {
Decimal.Parse(litVal, NumberStyles.Number, CultureInfo.InvariantCulture);
}
catch {
keepRow = false;
}
}
//Typed Literal
else {
try {
Decimal.Parse(litVal.Substring(0, litVal.LastIndexOf("^^", StringComparison.Ordinal)), NumberStyles.Number, CultureInfo.InvariantCulture);
}
catch {
keepRow = false;
}
}
}
//Apply the eventual negation
if (applyNegation) {
keepRow = !keepRow;
}
}
return keepRow;
}