/// <summary>
/// Create a new business object.
/// </summary>
/// <param name="objectType">Type of business object to create.</param>
/// <param name="criteria">Criteria object describing business object.</param>
/// <param name="context">
/// <see cref="Server.DataPortalContext" /> object passed to the server.
/// </param>
public DataPortalResult Create(
Type objectType, object criteria, DataPortalContext context)
{
try
{
SetContext(context);
Authorize(new AuthorizeRequest(objectType, criteria, DataPortalOperations.Create));
DataPortalResult result;
DataPortalMethodInfo method = DataPortalMethodCache.GetCreateMethod(objectType, criteria);
IDataPortalServer portal;
switch (method.TransactionalType)
{
case TransactionalTypes.EnterpriseServices:
portal = new ServicedDataPortal();
try
{
result = portal.Create(objectType, criteria, context);
}
finally
{
((ServicedDataPortal)portal).Dispose();
}
break;
case TransactionalTypes.TransactionScope:
portal = new TransactionalDataPortal();
result = portal.Create(objectType, criteria, context);
break;
default:
portal = new DataPortalSelector();
result = portal.Create(objectType, criteria, context);
break;
}
return(result);
}
catch (YYT.Server.DataPortalException ex)
{
Exception tmp = ex;
throw;
}
catch (Exception ex)
{
throw new DataPortalException(
"DataPortal.Create " + Resources.FailedOnServer,
ex, new DataPortalResult());
}
finally
{
ClearContext(context);
}
}
public static DataPortalMethodInfo GetMethodInfo(Type objectType, string methodName, params object[] parameters)
{
var key = new MethodCacheKey(objectType.Name, methodName, MethodCaller.GetParameterTypes(parameters));
DataPortalMethodInfo result = null;
if (!_cache.TryGetValue(key, out result))
{
lock (_cache)
{
if (!_cache.TryGetValue(key, out result))
{
result = new DataPortalMethodInfo(MethodCaller.GetMethod(objectType, methodName, parameters));
_cache.Add(key, result);
}
}
}
return(result);
}
/// <summary>
/// Gets a reference to the DataPortal_Fetch method for
/// the specified business object type.
/// </summary>
/// <param name="objectType">Type of the business object.</param>
/// <param name="criteria">Criteria parameter value.</param>
/// <remarks>
/// If the criteria parameter value is an integer, that is a special
/// flag indicating that the parameter should be considered missing
/// (not Nothing/null - just not there).
/// </remarks>
internal static DataPortalMethodInfo GetFetchMethod(Type objectType, object criteria)
{
// an "Integer" criteria is a special flag indicating
// that criteria is empty and should not be used
DataPortalMethodInfo method = null;
var factoryInfo = ObjectFactoryAttribute.GetObjectFactoryAttribute(objectType);
if (factoryInfo == null)
{
if (criteria is int)
{
method = GetMethodInfo(objectType, "DataPortal_Fetch");
}
else
{
method = GetMethodInfo(objectType, "DataPortal_Fetch", criteria);
}
}
else
{
var factoryType = FactoryDataPortal.FactoryLoader.GetFactoryType(factoryInfo.FactoryTypeName);
if (factoryType != null)
{
if (criteria is int)
{
method = GetMethodInfo(
factoryType,
factoryInfo.FetchMethodName);
}
else
{
method = GetMethodInfo(
FactoryDataPortal.FactoryLoader.GetFactoryType(factoryInfo.FactoryTypeName),
factoryInfo.FetchMethodName,
criteria);
}
}
else
{
method = new DataPortalMethodInfo();
}
}
return(method);
}
