public static dynamic GetQueryableOfDerivedType(this EntityObjectStore.LocalContext context, Type type)
{
Type mostBaseType = context.GetMostBaseType(type);
MethodInfo mi = typeof(ObjectContextUtils).GetMethod("GetObjectSetOfType").MakeGenericMethod(type, mostBaseType);
return(InvokeUtils.InvokeStatic(mi, new object[] { context }));
}
public static IQueryable <TDerived> GetObjectSetOfType <TDerived, TBase>(this EntityObjectStore.LocalContext context) where TDerived : TBase
{
MethodInfo mi = context.WrappedObjectContext.GetType().GetMethod("CreateObjectSet", Type.EmptyTypes).MakeGenericMethod(typeof(TBase));
var os = (IQueryable <TBase>)InvokeUtils.Invoke(mi, context.WrappedObjectContext, null);
((ObjectQuery)os).MergeOption = context.DefaultMergeOption;
return(os.OfType <TDerived>());
}
public static object CreateObject(this EntityObjectStore.LocalContext context, Type type)
{
object objectSet = context.GetObjectSet(type);
var methods = objectSet.GetType().GetMethods();
var mi = methods.Single(m => m.Name == "CreateObject" && m.IsGenericMethod).MakeGenericMethod(type);
return(InvokeUtils.Invoke(mi, objectSet, null));
}
public static dynamic GetObjectSet(this EntityObjectStore.LocalContext context, Type type)
{
Type mostBaseType = context.GetMostBaseType(type);
MethodInfo mi = context.WrappedObjectContext.GetType().GetMethod("CreateObjectSet", Type.EmptyTypes).MakeGenericMethod(mostBaseType);
dynamic os = mi.Invoke(context.WrappedObjectContext, null);
os.MergeOption = context.DefaultMergeOption;
return(os);
}
public static ObjectQuery GetObjectSet(this EntityObjectStore.LocalContext context, Type type)
{
var mostBaseType = context.GetMostBaseType(type);
var mi = context.WrappedObjectContext.GetType().GetMethod("CreateObjectSet", Type.EmptyTypes).MakeGenericMethod(mostBaseType);
var os = (ObjectQuery)mi.Invoke(context.WrappedObjectContext, null);
os.MergeOption = context.DefaultMergeOption;
return(os);
}
private static PropertyInfo[] SafeGetMembers(this EntityObjectStore.LocalContext context, Type type, Func <EntityType, IEnumerable <EdmMember> > getMembers)
{
EntityType et = GetEntityType(context, type);
if (et != null)
{
return(type.GetProperties().Join(getMembers(et), pi => pi.Name, em => em.Name, (pi, em) => pi).ToArray());
}
return(new PropertyInfo[] {});
}
public static PropertyInfo[] GetComplexMembers(this EntityObjectStore.LocalContext context, Type type)
{
StructuralType st = context.GetStructuralType(type);
if (st != null)
{
IEnumerable <EdmMember> cm = st.Members.Where(m => m.TypeUsage.EdmType is ComplexType);
return(type.GetProperties().Join(cm, pi => pi.Name, em => em.Name, (pi, em) => pi).ToArray());
}
return(new PropertyInfo[] {});
}
public static object GetNextKey(this EntityObjectStore.LocalContext context, Type type)
{
PropertyInfo idMember = context.GetIdMembers(type).Single();
string query = string.Format("max(it.{0}) + 1", idMember.Name);
dynamic os = context.GetObjectSet(type);
ObjectQuery <DbDataRecord> results = os.Select(query);
DbDataRecord result = results.Single();
return(GetNextKey(type, result.IsDBNull(0) ? 1 : (int)result[0]));
}
public static bool IdMembersAreIdentity(this EntityObjectStore.LocalContext context, Type type)
{
EntityType et = GetEntityType(context, type);
if (et != null)
{
MetadataProperty[] mp = et.KeyMembers.SelectMany(m => m.MetadataProperties).Where(p => p.Name.Contains("StoreGeneratedPattern")).ToArray();
return(mp.Any() && mp.All(p => p.Value.Equals("Identity")));
}
return(false);
}
public static object ProxyObject(this EntityObjectStore.LocalContext context, object objectToProxy)
{
if (TypeUtils.IsProxy(objectToProxy.GetType()))
{
return(objectToProxy);
}
object newObject = context.GetObjectSet(objectToProxy.GetType()).CreateObject();
PropertyInfo[] idMembers = context.GetIdMembers(objectToProxy.GetType());
idMembers.ForEach(pi => newObject.GetType().GetProperty(pi.Name).SetValue(newObject, pi.GetValue(objectToProxy, null), null));
return(context.GetObjectSet(objectToProxy.GetType()).ApplyCurrentValues((dynamic)newObject));
}
public static bool CanCreateObjectSet(this EntityObjectStore.LocalContext context, Type type)
{
try {
MethodInfo mi = context.WrappedObjectContext.GetType().GetMethod("CreateObjectSet", Type.EmptyTypes).MakeGenericMethod(type);
mi.Invoke(context.WrappedObjectContext, null);
return(true);
}
catch (Exception) {
// expected (but ugly)
if (EntityObjectStore.RequireExplicitAssociationOfTypes)
{
string msg = $"{type} is not explicitly associated with any DbContext, but 'RequireExplicitAssociationOfTypes' has been set on the PersistorInstaller";
throw new InitialisationException(Log.LogAndReturn(msg));
}
}
return(false);
}
public static dynamic CreateQuery(this EntityObjectStore.LocalContext context, Type type, string queryString, params ObjectParameter[] parameters)
{
Type mostBaseType = context.GetMostBaseType(type);
MethodInfo mi = context.WrappedObjectContext.GetType().GetMethod("CreateQuery").MakeGenericMethod(mostBaseType);
var parms = new List <object> {
queryString, new ObjectParameter[] {}
};
dynamic os = mi.Invoke(context.WrappedObjectContext, parms.ToArray());
if (type != mostBaseType)
{
dynamic ot = os.GetType().GetMethod("OfType").MakeGenericMethod(type);
os = ot.Invoke(os, null);
}
return(os);
}
public static bool ContextKnowsType(this EntityObjectStore.LocalContext context, Type type)
{
// problem is that OSpace is not populated until an object set is created.
// and there seems to be no way of navigating to the OSpace type from the CSpace.
// for the moment then workaround by attempting to create an object set.
// For complex types this will only work if the parent is queried first
if (context.WrappedObjectContext.IsTypeInOSpace(type))
{
return(true);
}
if (context.CanCreateObjectSet(type))
{
return(true);
}
return(false);
}
public static bool CanCreateObjectSet(this EntityObjectStore.LocalContext context, Type type)
{
try {
MethodInfo mi = context.WrappedObjectContext.GetType().GetMethod("CreateObjectSet", Type.EmptyTypes).MakeGenericMethod(type);
mi.Invoke(context.WrappedObjectContext, null);
return(true);
}
catch (Exception e) {
// expected (but ugly)
Log.DebugFormat("Context {0} did not recognise type {1} and threw {2}", context.Name, type.FullName, e.Message);
if (EntityObjectStore.RequireExplicitAssociationOfTypes)
{
string msg = string.Format("{0} is not explicitly associated with any DbContext, but 'RequireExplicitAssociationOfTypes' has been set on the PersistorInstaller", type);
throw new InitialisationException(msg);
}
}
return(false);
}
public static PropertyInfo[] GetNavigationMembers(this EntityObjectStore.LocalContext context, Type type) => context.SafeGetMembers(type, et => et.NavigationProperties);
private static EntityType GetEntityType(this EntityObjectStore.LocalContext context, Type type)
{
return(context.GetStructuralType(type) as EntityType);
}
public static object[] GetKey(this EntityObjectStore.LocalContext context, INakedObject nakedObject)
{
return(context.GetIdMembers(nakedObject.GetDomainObject().GetEntityProxiedType()).Select(x => x.GetValue(nakedObject.GetDomainObject(), null)).ToArray());
}
public static PropertyInfo[] GetIdMembers(this EntityObjectStore.LocalContext context, Type type) => context.SafeGetMembers(type, et => et.KeyMembers);
public static object GetQueryableOfDerivedType <T>(this EntityObjectStore.LocalContext context) => context.GetQueryableOfDerivedType(typeof(T));
public static dynamic GetQueryableOfDerivedType <T>(this EntityObjectStore.LocalContext context)
{
return(context.GetQueryableOfDerivedType(typeof(T)));
}
public static object[] GetKey(this EntityObjectStore.LocalContext context, object domainObject) => context.GetIdMembers(domainObject.GetEntityProxiedType()).Select(x => x.GetValue(domainObject, null)).ToArray();
// problem is that OSpace is not populated until an object set is created.
// and there seems to be no way of navigating to the OSpace type from the CSpace.
// for the moment then workaround by attempting to create an object set.
// For complex types this will only work if the parent is queried first
public static bool ContextKnowsType(this EntityObjectStore.LocalContext context, Type type) =>
context.WrappedObjectContext.IsTypeInOSpace(type) || context.CanCreateObjectSet(type);
public static PropertyInfo[] GetReferenceMembers(this EntityObjectStore.LocalContext context, Type type) => context.GetNavigationMembers(type).Where(x => !CollectionUtils.IsCollection(x.PropertyType)).ToArray();
public static PropertyInfo[] GetNonIdMembers(this EntityObjectStore.LocalContext context, Type type)
{
return(context.GetMembers(type).Where(x => !context.GetIdMembers(type).Contains(x)).ToArray());
}
public static PropertyInfo[] GetAllMembers(this EntityObjectStore.LocalContext context, Type type)
{
return(context.GetMembers(type).Union(context.GetNavigationMembers(type)).ToArray());
}
public static PropertyInfo[] GetCollectionMembers(this EntityObjectStore.LocalContext context, Type type)
{
return(context.GetNavigationMembers(type).Where(x => CollectionUtils.IsCollection(x.PropertyType)).ToArray());
}
public static PropertyInfo[] GetMembers(this EntityObjectStore.LocalContext context, Type type)
{
return(context.SafeGetMembers(type, et => et.Properties));
}
