/// <summary>
/// This class is used to place type information on the wire. Since the wire protocol is Provider independent,
/// only interface types are stored. Usually this is used to declare the type of the following IPersistenceObject.
/// </summary>
/// <remarks>
/// Since the <see cref="InterfaceType.Factory"/> cannot be serialiezed, this class cannot provide full dehydration.
/// Use <see cref="GetSystemType"/> and your own factory to retrieve <see cref="InterfaceType"/>.</remarks>
/// <param name="ifType">System.Type to serialize</param>
/// <param name="iftFactory"></param>
internal SerializableType(InterfaceType ifType, InterfaceType.Factory iftFactory)
{
var type = ifType.Type;
if (type.IsGenericType)
{
Type genericType = type.GetGenericTypeDefinition();
TypeName = genericType.FullName;
AssemblyQualifiedName = genericType.AssemblyQualifiedName;
GenericTypeParameter = type.GetGenericArguments()
.Select(t => new SerializableType(iftFactory(t), iftFactory))
.ToArray();
}
else
{
TypeName = type.FullName;
AssemblyQualifiedName = type.AssemblyQualifiedName;
GenericTypeParameter = new SerializableType[] { };
}
// This is null if the Type is e.g. a Generic Parameter - not supported
if (string.IsNullOrEmpty(AssemblyQualifiedName))
throw new NotSupportedException("AssemblyQualifiedName must not be null or empty - maybe this Type is a Generic Parameter or something similarily strange.");
}
public List<JavaScriptObjectMoniker> GetList(SerializableType type)
{
if (type == null) { throw new ArgumentNullException("type"); }
throw new NotImplementedException();
//try
//{
// return ZetboxContextManagerModule.ZetboxContext.GetQuery(ZetboxContextManagerModule.IftFactory(type.GetSystemType()))
// .Select(i => new JavaScriptObjectMoniker(ZetboxContextManagerModule.ZetboxContext, i)).ToList();
//}
//catch (Exception ex)
//{
// throw new FaultException(ex.Message);
//}
}
public byte[] InvokeServerMethod(Guid version, SerializableType type, int ID, string method, SerializableType[] parameterTypes, byte[] parameterArray, byte[] changedObjectsArray, ObjectNotificationRequest[] notificationRequests, out byte[] retChangedObjects)
{
using (Logging.Facade.DebugTraceMethodCallFormat("InvokeServerMethod:" + method, "method={0}, ID={1}", method, ID))
{
if (type == null)
throw new ArgumentNullException("type");
if (string.IsNullOrEmpty(method))
throw new ArgumentNullException("method");
if (parameterTypes == null)
throw new ArgumentNullException("parameterTypes");
if (parameterArray == null)
throw new ArgumentNullException("parameterArray");
if (changedObjectsArray == null)
throw new ArgumentNullException("changedObjectsArray");
_perfCounter.IncrementServerMethodInvocation();
retChangedObjects = null;
try
{
DebugLogIdentity();
using (IZetboxContext ctx = _ctxFactory())
{
var parameter = new MemoryStream(parameterArray);
parameter.Seek(0, SeekOrigin.Begin);
List<object> parameterList = new List<object>();
using (var parameterReader = _readerFactory.Invoke(new BinaryReader(parameter)))
{
foreach (var t in parameterTypes)
{
object val;
var systemType = t.GetSystemType();
parameterReader.Read(out val,
systemType.IsICompoundObject() // IDataObjects are serialized as proxy, only ICompoundObject are serialized directoy
? ctx.ToImplementationType(ctx.GetInterfaceType(systemType)).Type
: systemType);
parameterList.Add(val);
}
}
var changedObjects = new MemoryStream(changedObjectsArray);
changedObjects.Seek(0, SeekOrigin.Begin);
var readObjects = ReadObjects(changedObjects, ctx);
// Context is ready, translate IDataObjectParameter
for(int i=0;i<parameterList.Count;i++)
{
var p = parameterList[i] as ZetboxStreamReader.IDataObjectProxy;
if(p != null)
{
parameterList[i] = ctx.Find(_iftFactory(p.Type.GetSystemType()), p.ID);
}
}
IEnumerable<IPersistenceObject> changedObjectsList;
var result = _sohFactory
.GetServerObjectHandler(_iftFactory(type.GetSystemType()))
.InvokeServerMethod(version, ctx, ID, method,
parameterTypes.Select(t => t.GetSystemType()),
parameterList,
readObjects,
notificationRequests ?? new ObjectNotificationRequest[0],
out changedObjectsList);
retChangedObjects = SendObjects(changedObjectsList.Cast<IStreamable>(), true).ToArray();
if (Logging.Facade.IsDebugEnabled && result != null)
{
Logging.Facade.DebugFormat("Serializing method result type is '{0}'", result.GetType().FullName);
}
if (result != null && result.GetType() == typeof(string))
{
Logging.Facade.Debug("Serializing method result as string");
// string is also a IEnumerable, but FindElementTypes returns nothing
MemoryStream resultStream = new MemoryStream();
new BinaryFormatter().Serialize(resultStream, result);
return resultStream.ToArray();
}
else if (result != null && result.GetType().IsIStreamable())
{
Logging.Facade.Debug("Serializing method result as IStreamable");
IStreamable resultObj = (IStreamable)result;
return SendObjects(new IStreamable[] { resultObj }, true).ToArray();
}
else if (result != null && result.GetType().IsIEnumerable() && result.GetType().FindElementTypes().Any(t => t.IsIStreamable()))
{
Logging.Facade.Debug("Serializing method result as IEnumerable<IStreamable>");
var lst = ((IEnumerable)result).AsQueryable().Cast<IStreamable>().Take(Zetbox.API.Helper.MAXLISTCOUNT);
return SendObjects(lst, true).ToArray();
}
else if (result != null)
{
Logging.Facade.Debug("Serializing method result as object with BinaryFormatter");
MemoryStream resultStream = new MemoryStream();
new BinaryFormatter().Serialize(resultStream, result);
return resultStream.ToArray();
}
else
{
Logging.Facade.Debug("Serializing empty method");
return new byte[] { };
}
}
}
catch (Exception ex)
{
Helper.ThrowFaultException(ex);
// Never called, Handle errors throws an Exception
return null;
}
}
}
public byte[] GetListOf(Guid version, SerializableType type, int ID, string property)
{
using (Logging.Facade.DebugTraceMethodCallFormat("GetListOf", "type={0}", type))
{
DebugLogIdentity();
try
{
if (type == null) { throw new ArgumentNullException("type"); }
using (var ctx = _ctxFactory())
{
var ifType = _iftFactory(type.GetSystemType());
int resultCount = 0;
var ticks = _perfCounter.IncrementGetListOf(ifType);
try
{
IEnumerable<IStreamable> lst = _sohFactory
.GetServerObjectHandler(ifType)
.GetListOf(version, ctx, ID, property);
resultCount = lst.Count();
return SendObjects(lst, false /*true*/).ToArray();
}
finally
{
_perfCounter.DecrementGetListOf(ifType, resultCount, ticks);
}
}
}
catch (Exception ex)
{
Helper.ThrowFaultException(ex);
// Never called, Handle errors throws an Exception
return null;
}
}
}
internal SerializableType(string typeName, string assemblyQualifiedName, SerializableType[] genericTypeParameter)
{
TypeName = typeName;
AssemblyQualifiedName = assemblyQualifiedName;
GenericTypeParameter = genericTypeParameter;
}
private void Init(DataObjectViewModel m)
{
ID = m.ID;
Type = m.GetInterfaceType().ToSerializableType();
Text = m.Name;
}
/// <summary>
/// Deserialize a SerializableType.
/// </summary>
/// <param name="type">Destination Value.</param>
public void Read(out SerializableType type)
{
type = ReadSerializableType();
}
/// <summary>
/// Returns a list of objects from the datastore, matching the specified filters.
/// </summary>
/// <param name="version">Current version of generated Zetbox.Objects assembly</param>
/// <param name="type">Type of Objects</param>
/// <param name="maxListCount">Max. ammount of objects</param>
/// <param name="eagerLoadLists">If true list properties will be eager loaded</param>
/// <param name="filter">Serializable linq expression used a filter</param>
/// <param name="orderBy">List of derializable linq expressions used as orderby</param>
/// <returns>the found objects</returns>
public byte[] GetList(Guid version, SerializableType type, int maxListCount, bool eagerLoadLists, SerializableExpression[] filter, OrderByContract[] orderBy)
{
using (Logging.Facade.DebugTraceMethodCallFormat("GetList", "type={0}", type))
{
DebugLogIdentity();
try
{
if (type == null) { throw new ArgumentNullException("type"); }
var ifType = _iftFactory(type.GetSystemType());
int resultCount = 0;
var ticks = _perfCounter.IncrementGetList(ifType);
try
{
using (IZetboxContext ctx = _ctxFactory())
{
var filterExpresstions = filter != null ? filter.Select(f => SerializableExpression.ToExpression(f)).ToList() : null;
IEnumerable<IStreamable> lst = _sohFactory
.GetServerObjectHandler(ifType)
.GetList(version, ctx, maxListCount,
filterExpresstions,
orderBy != null ? orderBy.Select(o => new OrderBy(o.Type, SerializableExpression.ToExpression(o.Expression))).ToList() : null);
resultCount = lst.Count();
return SendObjects(lst, eagerLoadLists).ToArray();
}
}
finally
{
_perfCounter.DecrementGetList(ifType, resultCount, ticks);
}
}
catch (Exception ex)
{
Helper.ThrowFaultException(ex);
// Never called, Handle errors throws an Exception
return null;
}
}
}
