public QueryModelDescription(System.Type aModel, QueryModelAttribute aDescription)
{
if (aModel == null)
{
throw new NullReferenceException("QueryModelDescription: Model type can't be null");
}
if (aDescription == null)
{
throw new NullReferenceException("QueryModelDescription: Attribute must be specified");
}
foreach (ConstructorInfo info in aModel.GetConstructors())
{
if (info.GetParameters().Length == 1)
{
if (TypeValidator.IsCompatible(info.GetParameters()[0].ParameterType, typeof(MappingsImplementor)) == true)
{
constructor = info;
break;
}
}
}
if (constructor == null)
{
throw new NotImplementedException("QueryModelDescription: QueryImplementor needs public .ctor (MappingsImplementor)");
}
model = aModel;
definition = aDescription;
}
/// <summary>
/// Checks if specified type is query model, then checks if model is already registered.
/// Next checks for duplicate type handler and if everything is successful registers it
/// </summary>
/// <param name="aType">
/// Type which is checked <see cref="System.Type"/>
/// </param>
/// <returns>
/// true if it is model handler, false if not <see cref="System.Boolean"/>
/// </returns>
/// <remarks>
/// If registered model for specified type already exists, then it throws
/// ExceptionDuplicateQueryModelTypeHandler exception
/// </remarks>
public static bool IsQueryModel(System.Type aType)
{
if (aType == null)
{
return(false);
}
QueryModelAttribute[] attrs = (QueryModelAttribute[])aType.GetCustomAttributes(typeof(QueryModelAttribute), false);
if ((attrs == null) || (attrs.Length == 0))
{
return(false);
}
QueryModelAttribute attr = attrs[0];
// Check if model is already registered
if (models != null)
{
foreach (QueryModelDescription desc in models)
{
if (desc != null)
{
if (desc.Model == aType)
{
return(true);
}
}
}
// Check if duplicate handler exists
foreach (QueryModelDescription desc in models)
{
if (desc != null)
{
if (desc.Definition.ListType == attr.ListType)
{
throw new ExceptionDuplicateQueryModelTypeHandler(aType, attr.ListType);
}
}
}
}
models.Add(new QueryModelDescription(aType, attr));
return(true);
}