public static object[] GetParameters(Type modelType, FilterCondition[] filters)
{
if (filters == null)
{
return(null);
}
List <object> parameters = new List <object>();
for (int i = 0; i < filters.Length; i++)
{
IFilter filter = GetFilter(filters[i].FilterType);
if (!filters[i].Internal)
{
filter.CopyPropertiesValue(filters[i]);
}
object parameter = GetParameter(modelType, filters[i]);
if (parameter != null)
{
parameters.Add(parameter);
}
}
return(parameters.ToArray());
}
private static string JoinWhereClause(Type modelType, FilterCondition[] conditions)
{
var attr = modelType.GetCustomAttributes(true).OfType <DataEntityAttribute>().FirstOrDefault();
string whereOperator = (attr != null && !string.IsNullOrEmpty(attr.WhereOperator)) ? attr.WhereOperator : " && ";
StringBuilder whereClause = new StringBuilder();
int parameterIndex = 0;
for (int i = 0; i < conditions.Length; i++)
{
if (!conditions[i].Internal)
{
IFilter filter = GetFilter(conditions[i].FilterType);
filter.CopyPropertiesValue(conditions[i]);
whereClause.AppendFormat("{0}{1}", filter.GetWhereClause(conditions[i], parameterIndex), whereOperator);
}
else
{
IFilter filter = GetFilter(conditions[i].FilterType);
whereClause.AppendFormat("{0} ", filter.GetWhereClauseInternal(conditions[i], parameterIndex));
}
if (GetParameter(modelType, conditions[i]) != null)
{
parameterIndex++;
}
}
string where = whereClause.ToString();
if (where.EndsWith(whereOperator))
{
where = where.Substring(0, where.Length - whereOperator.Length);
}
return(where);
}
public static List <IFilter> GenerateFilters(Type modelType)
{
var filters = new List <IFilter>();
var dict = new List <FilterDictionary>();
IPrincipal user = null;
if (System.Web.HttpContext.Current != null)
{
user = System.Web.HttpContext.Current.User;
}
// Order the columns of this table .
List <PropertyInfo> filterList = modelType.GetProperties().Where(p => p.GetCustomAttributes(true).OfType <FilterWebapiAttribute>().DefaultIfEmpty().FirstOrDefault() != null).OrderBy(o => o.GetCustomAttributes(true).OfType <FilterWebapiAttribute>().First().GroupOrder).ToList();
if (filterList.Count == 0)
{
return(null);
}
foreach (PropertyInfo prop in filterList)
{
foreach (Attribute att in prop.GetCustomAttributes(true).OfType <FilterWebapiAttribute>().OrderBy(f => f.Order))
{
FilterWebapiAttribute filterAtt = att as FilterWebapiAttribute;
if (filterAtt == null)
{
continue;
}
if (user != null && !string.IsNullOrEmpty(filterAtt.Permission))
{
string[] rolesRequired = filterAtt.Permission.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries);
RolePrincipal principal = (RolePrincipal)System.Web.HttpContext.Current.User;
if (rolesRequired.Length > 0 && rolesRequired.Where(r => principal.IsInRole(r)).Count() == 0)
{
continue;
}
}
IFilter f = Activator.CreateInstance(filterAtt.FilterType) as IFilter;
f.Property = prop.Name;
if (string.IsNullOrEmpty(filterAtt.DisplayName))
{
f.DisplayName = f.Property;
}
var attLength = prop.GetCustomAttributes(true).OfType <StringLengthAttribute>().FirstOrDefault();
if (attLength != null)
{
f.Length = attLength.MaximumLength;
}
f.CopyPropertiesValue(filterAtt);
if (f.Internal || (dict.Count(d => d.Property == f.Property && d.Type == f.GetType().Name&& d.DefaultOperator == f.DefaultOperator && d.DefaultValue.Equals(f.DefaultValue)) == 0))
{
filters.Add(f);
dict.Add(new FilterDictionary {
Property = f.Property, Type = f.GetType().Name, DefaultOperator = f.DefaultOperator, DefaultValue = f.DefaultValue
});
}
}
}
return(filters);
}
