// TODO perhaps build an in-memory "inference" model that keeps track of the assumptions we make (association/entity type names, etc.)
/// <summary>
/// Generates mapping specification language (MSL) based on the provided conceptual schema definition language (CSDL).
/// </summary>
/// <typeparam name="T"> The type of the activity output. </typeparam>
/// <param name="owningActivity"> The currently executing activity. </param>
/// <param name="context"> The activity context that contains the state of the workflow. </param>
/// <param name="inputs"> Contains the incoming CSDL. </param>
/// <returns> Mapping specification language (MSL) of type T based on the provided conceptual schema definition language (CSDL). </returns>
public T GenerateActivityOutput <T>(
OutputGeneratorActivity owningActivity, NativeActivityContext context, IDictionary <string, object> inputs) where T : class
{
_activity = owningActivity;
object o;
inputs.TryGetValue(EdmConstants.csdlInputName, out o);
var edmItemCollection = o as EdmItemCollection;
if (edmItemCollection == null)
{
throw new InvalidOperationException(Resources.ErrorCouldNotFindCSDL);
}
var symbolResolver = context.GetExtension <SymbolResolver>();
var edmParameterBag = symbolResolver[typeof(EdmParameterBag).Name] as EdmParameterBag;
if (edmParameterBag == null)
{
throw new InvalidOperationException(Resources.ErrorNoEdmParameterBag);
}
// Find the TargetVersion parameter
var targetFrameworkVersion = edmParameterBag.GetParameter <Version>(EdmParameterBag.ParameterName.TargetVersion);
if (targetFrameworkVersion == null)
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture, Resources.ErrorNoParameterDefined, EdmParameterBag.ParameterName.TargetVersion));
}
// Find the MSL namespace parameter
_mslUri = SchemaManager.GetMSLNamespaceName(targetFrameworkVersion);
_msl = _mslUri;
var csdlNamespace = edmItemCollection.GetNamespace();
var mappingElement = ConstructMappingElement();
var entityContainerMappingElement = ConstructEntityContainerMapping(edmItemCollection, csdlNamespace);
entityContainerMappingElement.Add(ConstructEntitySetMappings(edmItemCollection, csdlNamespace));
entityContainerMappingElement.Add(ConstructAssociationSetMappings(edmItemCollection, csdlNamespace, targetFrameworkVersion));
mappingElement.Add(entityContainerMappingElement);
var serializedMappingElement = String.Empty;
try
{
serializedMappingElement = EdmExtension.SerializeXElement(mappingElement);
}
catch (Exception e)
{
throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Resources.ErrorSerializing_CsdlToMsl, e.Message), e);
}
return(serializedMappingElement as T);
}
// TODO perhaps build an in-memory "inference" model that keeps track of the assumptions we make (association/entity type names, etc.)
/// <summary>
/// Generates store schema definition language (SSDL) based on the provided conceptual schema definition language (CSDL).
/// </summary>
/// <typeparam name="T"> The type of the activity output. </typeparam>
/// <param name="owningActivity"> The currently executing activity. </param>
/// <param name="context"> The activity context that contains the state of the workflow. </param>
/// <param name="inputs"> Contains the incoming CSDL. </param>
/// <returns> Store schema definition language (SSDL) of type T based on the provided conceptual schema definition language (CSDL). </returns>
public T GenerateActivityOutput <T>(
OutputGeneratorActivity owningActivity, NativeActivityContext context, IDictionary <string, object> inputs) where T : class
{
_activity = owningActivity;
// First attempt to get the CSDL represented by the EdmItemCollection from the inputs
object o;
inputs.TryGetValue(EdmConstants.csdlInputName, out o);
var edmItemCollection = o as EdmItemCollection;
if (edmItemCollection == null)
{
throw new InvalidOperationException(Resources.ErrorCouldNotFindCSDL);
}
var symbolResolver = context.GetExtension <SymbolResolver>();
var edmParameterBag = symbolResolver[typeof(EdmParameterBag).Name] as EdmParameterBag;
if (edmParameterBag == null)
{
throw new InvalidOperationException(Resources.ErrorNoEdmParameterBag);
}
// Find the ProviderInvariantName parameter
var providerInvariantName = edmParameterBag.GetParameter <string>(EdmParameterBag.ParameterName.ProviderInvariantName);
if (String.IsNullOrEmpty(providerInvariantName))
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture, Resources.ErrorNoParameterDefined, EdmParameterBag.ParameterName.ProviderInvariantName));
}
// Find the ProviderManifestToken parameter
var providerManifestToken = edmParameterBag.GetParameter <string>(EdmParameterBag.ParameterName.ProviderManifestToken);
if (String.IsNullOrEmpty(providerManifestToken))
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture, Resources.ErrorNoParameterDefined, EdmParameterBag.ParameterName.ProviderManifestToken));
}
// Find the TargetVersion parameter
var targetFrameworkVersion = edmParameterBag.GetParameter <Version>(EdmParameterBag.ParameterName.TargetVersion);
if (targetFrameworkVersion == null)
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture, Resources.ErrorNoParameterDefined, EdmParameterBag.ParameterName.TargetVersion));
}
// Find the DatabaseSchemaName parameter
var databaseSchemaName = edmParameterBag.GetParameter <string>(EdmParameterBag.ParameterName.DatabaseSchemaName);
if (String.IsNullOrEmpty(databaseSchemaName))
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture, Resources.ErrorNoParameterDefined, EdmParameterBag.ParameterName.DatabaseSchemaName));
}
DbProviderManifest providerManifest = null;
try
{
providerManifest =
DependencyResolver.GetService <DbProviderServices>(providerInvariantName).GetProviderManifest(providerManifestToken);
}
catch (ArgumentException ae)
{
// This can happen if the ProviderInvariantName is not valid
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture, Resources.ErrorProviderManifestEx_ProviderInvariantName, providerInvariantName), ae);
}
catch (ProviderIncompatibleException pie)
{
// This can happen if the ProviderManifestToken is not valid
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture, Resources.ErrorProviderManifestEx_ProviderManifestToken, providerManifestToken), pie);
}
if (providerManifest == null)
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture, Resources.ErrorCouldNotFindProviderManifest, providerInvariantName,
providerManifestToken));
}
// Resolve the SSDL namespace
_ssdlUri = SchemaManager.GetSSDLNamespaceName(targetFrameworkVersion);
_ssdl = _ssdlUri;
// Resolve the ESSG namespace
_essgUri = SchemaManager.GetEntityStoreSchemaGeneratorNamespaceName();
_essg = _essgUri;
var csdlNamespace = edmItemCollection.GetNamespace();
var ssdlNamespace = String.IsNullOrEmpty(csdlNamespace) ? "Store" : csdlNamespace + ".Store";
var schemaElement = ConstructSchemaElement(providerInvariantName, providerManifestToken, ssdlNamespace);
var entityContainerElement = ConstructEntityContainer(edmItemCollection, databaseSchemaName, csdlNamespace, ssdlNamespace);
schemaElement.Add(entityContainerElement);
var entityTypes = ConstructEntityTypes(edmItemCollection, providerManifest, targetFrameworkVersion);
schemaElement.Add(entityTypes);
var associations = ConstructAssociations(edmItemCollection, ssdlNamespace);
schemaElement.Add(associations);
var serializedSchemaElement = String.Empty;
try
{
serializedSchemaElement = EdmExtension.SerializeXElement(schemaElement);
}
catch (Exception e)
{
throw new ArgumentException(
String.Format(CultureInfo.CurrentCulture, Resources.ErrorSerializing_CsdlToSsdl, e.Message), e);
}
return(serializedSchemaElement as T);
}
