private static void DoLoadCollection <T, TProperty>(DbContext context, EntityEntry <T> entry, FilteredIncludeExpression filteredInclude) where T : class where TProperty : class
{
List <TProperty> collection = filteredInclude.Filter != null
? entry.Collection((Expression <Func <T, IEnumerable <TProperty> > >) filteredInclude.Include)
.Query()
.Where((Expression <Func <TProperty, bool> >)filteredInclude.Filter).ToList()
: entry.Collection((Expression <Func <T, IEnumerable <TProperty> > >)filteredInclude.Include)
.Query()
.ToList();
if (filteredInclude.FilteredIncludes == null || filteredInclude.FilteredIncludes.Count == 0)
{
return;
}
filteredInclude.FilteredIncludes.ToList().ForEach(exp =>
{
context.InvokeMethodForCollection
(
collection,
exp.Include.Body.GetMemberExpression().GetMemberType(),
exp
);
});
}
private static void InvokeMethodForCollection <T>(this DbContext context, List <T> list, Type memberType, FilteredIncludeExpression filteredIncludes) where T : class
{
if (memberType.IsList())
{
list.ForEach(item =>
{
LOAD_COLLECTION_METHOD.GetMethod().MakeGenericMethod
(
typeof(T),
memberType.GetUnderlyingElementType()
).Invoke(null, new object[] { context, context.GetEntry(item), filteredIncludes });
});
}
else
{
list.ForEach(item =>
{
LOAD_REFERENCE_METHOD.GetMethod().MakeGenericMethod
(
typeof(T),
memberType
).Invoke(null, new object[] { context, context.GetEntry(item), filteredIncludes });
});
}
}
private static void InvokeMethodForReference <T>(this DbContext context, T property, Type memberType, FilteredIncludeExpression filteredIncludes) where T : class
{
if (property == null)
{
return;
}
if (memberType.IsList())
{
LOAD_COLLECTION_METHOD.GetMethod().MakeGenericMethod
(
typeof(T),
memberType.GetUnderlyingElementType()
).Invoke(null, new object[] { context, context.GetEntry(property), filteredIncludes });
}
else
{
LOAD_REFERENCE_METHOD.GetMethod().MakeGenericMethod
(
typeof(T),
memberType
).Invoke(null, new object[] { context, context.GetEntry(property), filteredIncludes });
}
}
private static void DoLoadReference <T, TProperty>(DbContext context, EntityEntry <T> entry, FilteredIncludeExpression filteredInclude) where T : class where TProperty : class
{
TProperty property = entry.Reference((Expression <Func <T, TProperty> >)filteredInclude.Include)
.Query()
.SingleOrDefault((Expression <Func <TProperty, bool> >)filteredInclude.Filter);
if (filteredInclude.FilteredIncludes == null || filteredInclude.FilteredIncludes.Count == 0)
{
return;
}
filteredInclude.FilteredIncludes.ToList().ForEach(exp =>
{
context.InvokeMethodForReference <TProperty>
(
property,
exp.Include.Body.GetMemberExpression().GetMemberType(),
exp
);
});
}
