public override List <ConditionPropery> Get <TSource>()
{
List <ConditionPropery> cps = new List <ConditionPropery>();
Type sourceType = typeof(TSource);
PropertyInfo[] props = sourceType.GetProperties();
foreach (PropertyInfo prop in props)
{
object[] attrs = prop.GetCustomAttributes(true);
foreach (object attr in attrs)
{
ConditionAttribute conAttr = attr as ConditionAttribute;
if (conAttr != null)
{
ConditionPropery conProp = new ConditionPropery();
conProp.Key.PropertyName = prop.Name;
conProp.Key.PropertyType = prop.PropertyType;
conProp.action = conAttr.action;
cps.Add(conProp);
}
}
}
return(cps);
}
public static Func <TSource, bool> GetWhereFunc(ConditionPropery conProp)
{
lock (lockobj)
{
curConProp = conProp;
}
return(FuncMethod);
}
public ConditionProperyCollectionBuilder <TSource> AddConditionValue(string name, object value)
{
ConditionPropery conp = conProps.FirstOrDefault(cp => cp.Key.PropertyName == name);
if (conp != null)
{
conp.PropertyValue = value;
}
return(this);
}
public static Expression <Func <T, bool> > GetMeberEqualValueLambda <T>(ConditionPropery conProp)
{
var param = Expression.Parameter(typeof(T), "p");
Expression body = param;
foreach (var member in conProp.Key.PropertyName.Split('.'))
{
body = Expression.PropertyOrField(body, member);
}
var convert = Expression.Convert(body, conProp.Key.PropertyType);
Expression constvalue = Expression.Constant(conProp.PropertyValue);
var equal = Expression.Equal(convert, constvalue);
return((Expression <Func <T, bool> >)Expression.Lambda(equal, param));
}
public static Expression <Func <TSource, bool> > GetWhereExpression(ConditionPropery conProp)
{
return(ExpressionHelper.GetMeberEqualValueLambda <TSource>(conProp));
}
