private EntityObject CreateEntityObject(ObjectContext context, string entitySetName)
{
MetadataProvider metadataProvider = new MetadataProvider(context.MetadataWorkspace);
Type sysTableType = context.GetType().Assembly.GetTypes().Where(c => c.Name == metadataProvider.GetEntitySetType(context.DefaultContainerName, entitySetName).Name).ElementAt(0);
EntityObject entityObject = (EntityObject)sysTableType.GetConstructors()[0].Invoke(null);
return entityObject;
}
/// <summary>
/// Gets list of values
/// </summary>
/// <param name="context">ITypeDescriptorContext</param>
/// <returns>List of values</returns>
public override List<string> GetListOfValues(System.ComponentModel.ITypeDescriptorContext context)
{
if (context.Instance != null && context.PropertyDescriptor != null)
{
var edmItemAttribute = context.PropertyDescriptor.Attributes[typeof(EdmItemAttribute)];
if (edmItemAttribute == null)
{
throw new ObjectNotFoundException(string.Format("EdmItemAttribute not found on property:{0}.", context.PropertyDescriptor.Name));
}
if (edmItemAttribute.Equals(EdmItemAttribute.EdmMetadataAttribute))
{
return MetadataProvider.GetMetadataFiles(DTE.CurrentDirectory);
}
else
{
var command = GetRelatedCommand(context.Instance);
var provider = new MetadataProvider(DTE.CurrentDirectory, command.MetadataFile);
if (edmItemAttribute.Equals(EdmItemAttribute.EdmEntitySetAttribute))
{
return provider.GetEntitySetNames(command.ContextName);
}
var entitySetName = context.PropertyDescriptor.Attributes[typeof(TargetEntitySetItemAttribute)] == null
? command.EntitySetName : GetRelatedEntitySet(context.Instance).TargetEntitySet;
var entityTypeName = provider.GetEntitySetType(command.ContextName, entitySetName);
if (edmItemAttribute.Equals(EdmItemAttribute.EdmScalePropertyAttribute))
{
return provider.GetPropertyNames(command.ContextName, entityTypeName);
}
else if (edmItemAttribute.Equals(EdmItemAttribute.EdmNavigationPropertyAttribute))
{
return provider.GetNavgationPropertyNames(command.ContextName, entityTypeName);
}
else
{
throw new NotSupportedException(string.Format("EdmItemAttribute:{0} not supported.", edmItemAttribute.TypeId));
}
}
}
return new List<string>();
}
