private ResourceType GetResourceType(object instance)
{
ResourceType type = null;
ProviderImplementationSettings.Override(
s => s.EnforceMetadataCaching = false,
() => type = this.queryProvider.GetResourceType(instance));
return(type);
}
/// <summary>
/// Wrapper methods around metadata provider to get the ResourceType
/// </summary>
/// <param name="metadataProvider">metadata provider</param>
/// <param name="typeName">type name</param>
/// <returns>a resource type or throws</returns>
protected ResourceType GetResourceType(IDataServiceMetadataProvider metadataProvider, string typeName)
{
ResourceType resourceType = null;
ProviderImplementationSettings.Override(
s => s.EnforceMetadataCaching = false,
() => ExceptionUtilities.Assert(metadataProvider.TryResolveResourceType(typeName, out resourceType), "Cannot find a resource type '{0}' in the metadata provider", typeName));
return(resourceType);
}
/// <summary>
/// Wrapper methods around metadata provider to get the ResourceSet
/// </summary>
/// <param name="metadataProvider">metadata provider</param>
/// <param name="setName">set name</param>
/// <returns>a resource set or throws</returns>
protected ResourceSet GetResourceSet(IDataServiceMetadataProvider metadataProvider, string setName)
{
ResourceSet resourceSet = null;
ProviderImplementationSettings.Override(
s => s.EnforceMetadataCaching = false,
() => ExceptionUtilities.Assert(metadataProvider.TryResolveResourceSet(setName, out resourceSet), "Cannot find a resource set '{0}' in the metadata provider", setName));
return(resourceSet);
}
/// <summary>
/// Attempts to get a metadata provider and retrieved the types that derive from the given type
/// </summary>
/// <param name="type">The type to get derived types for.</param>
/// <returns>The derived types</returns>
protected IEnumerable <ResourceType> GetDerivedTypes(ResourceType type)
{
var metadataProvider = this.QueryProvider as IDataServiceMetadataProvider;
if (metadataProvider == null || !metadataProvider.HasDerivedTypes(type))
{
return(Enumerable.Empty <ResourceType>());
}
IEnumerable <ResourceType> types = null;
ProviderImplementationSettings.Override(
s => s.EnforceMetadataCaching = false,
() => types = metadataProvider.GetDerivedTypes(type));
return(types);
}
