public override IEnumerable <object> GetFilteredRows(TemplateParameters p, FilterOperation?operation, string stringValue)
{
if (operation == null)
{
var column = p.Columns[ParsedToken.QueryToken];
var filtered = p.Rows.Where(r => ToBool(r[column])).ToList();
return(filtered);
}
else
{
var type = this.Type;
object val = FilterValueConverter.Parse(stringValue, type, operation.Value.IsList());
Expression value = Expression.Constant(val, type);
ResultColumn col = p.Columns[ParsedToken.QueryToken];
var expression = Signum.Utilities.ExpressionTrees.Linq.Expr((ResultRow rr) => rr[col]);
Expression newBody = QueryUtils.GetCompareExpression(operation.Value, Expression.Convert(expression.Body, type), value, inMemory: true);
var lambda = Expression.Lambda <Func <ResultRow, bool> >(newBody, expression.Parameters).Compile();
var filtered = p.Rows.Where(lambda).ToList();
return(filtered);
}
}
public bool GetCondition(TemplateParameters p, FilterOperation?operation, string valueString)
{
var obj = this.GetValue(p);
if (operation == null)
{
return(ToBool(obj));
}
else
{
var type = this.Type;
Expression token = Expression.Constant(obj, type);
Expression value = Expression.Constant(FilterValueConverter.Parse(valueString, type, operation.Value.IsList()), type);
Expression newBody = QueryUtils.GetCompareExpression(operation.Value, token, value, inMemory: true);
var lambda = Expression.Lambda <Func <bool> >(newBody).Compile();
return(lambda());
}
}
public override bool Evaluate(TemplateParameters p)
{
var obj = ValueProvider !.GetValue(p);
if (Operation == null)
{
return(ToBool(obj));
}
else
{
var type = this.ValueProvider.Type !;
Expression token = Expression.Constant(obj, type);
Expression value = Expression.Constant(FilterValueConverter.Parse(Value, type, Operation.Value.IsList()), type);
Expression newBody = QueryUtils.GetCompareExpression(Operation.Value, token, value, inMemory: true);
var lambda = Expression.Lambda <Func <bool> >(newBody).Compile();
return(lambda());
}
}