protected override Expression BuildExpression(MemberExpression property)
{
Expression searchExpression = null;
Expression searchExpression1 = null;
Expression searchExpression2 = null;
if (string.IsNullOrEmpty(this.SearchTerm))
{
return(null);
}
if (this.Comparator == TextComparators.In)
{
Expression combinedExpression = null;
foreach (string val in SearchTerm.Split(','))
{
searchExpression1 = Expression.Equal(property, Expression.Constant(val));
if (!ReferenceEquals(searchExpression1, null) && !ReferenceEquals(searchExpression2, null))
{
combinedExpression = Expression.OrElse(searchExpression2, searchExpression1);
searchExpression1 = combinedExpression;
}
searchExpression2 = searchExpression1;
}
return(combinedExpression);
}
else
{
searchExpression = Expression.Call(
property,
typeof(string).GetMethod(this.Comparator.ToString(), new[] { typeof(string) }),
Expression.Constant(this.SearchTerm));
}
return(searchExpression);
}
protected override System.Linq.Expressions.Expression BuildExpression(System.Linq.Expressions.MemberExpression property)
{
if (string.IsNullOrEmpty(this.SearchTerm))
{
return(null);
}
object enumValue = null;
Expression searchExpression = null;
Expression searchExpression1 = null;
Expression searchExpression2 = null;
if (this.Comparator == EnumComparators.In)
{
Expression combinedExpression = null;
foreach (string val in SearchTerm.Split(','))
{
if (!ReferenceEquals(this.EnumType, null))
{
enumValue = Enum.Parse(this.EnumType, val);
}
else
{
enumValue = Enum.Parse(property.Type, val);
}
searchExpression1 = Expression.Equal(property, Expression.Constant(enumValue));
if (!ReferenceEquals(searchExpression1, null) && !ReferenceEquals(searchExpression2, null))
{
combinedExpression = Expression.OrElse(searchExpression2, searchExpression1);
searchExpression1 = combinedExpression;
}
searchExpression2 = searchExpression1;
}
if (ReferenceEquals(combinedExpression, null))
{
combinedExpression = searchExpression2;
}
return(combinedExpression);
}
else
{
if (!ReferenceEquals(this.EnumType, null))
{
enumValue = Enum.Parse(this.EnumType, this.SearchTerm);
}
else
{
enumValue = Enum.Parse(property.Type, this.SearchTerm);
}
searchExpression = Expression.Equal(property, Expression.Constant(enumValue));
}
return(searchExpression);
}
