protected static ModelBuilderSettings SetupSettingsAndModeForDbPages(
IServiceProvider serviceProvider,
Project project,
EFArtifact artifact,
bool checkDatabaseConnection,
ModelBuilderWizardForm.WizardMode noConnectionMode,
ModelBuilderWizardForm.WizardMode existingConnectionMode,
out ModelBuilderWizardForm.WizardMode startMode)
{
var conceptualEntityModel = artifact.ConceptualModel();
Debug.Assert(conceptualEntityModel != null, "Null Conceptual Entity Model");
var entityContainer = conceptualEntityModel.FirstEntityContainer as ConceptualEntityContainer;
Debug.Assert(entityContainer != null, "Null Conceptual Entity Container");
var entityContainerName = entityContainer.LocalName.Value;
// set up ModelBuilderSettings for startMode=noConnectionMode
startMode = noConnectionMode;
var settings = new ModelBuilderSettings
{
VSApplicationType = VsUtils.GetApplicationType(serviceProvider, project),
AppConfigConnectionPropertyName = entityContainerName,
Artifact = artifact,
UseLegacyProvider = ModelHelper.GetDesignerPropertyValueFromArtifactAsBool(
OptionsDesignerInfo.ElementName,
OptionsDesignerInfo.AttributeUseLegacyProvider,
OptionsDesignerInfo.UseLegacyProviderDefault,
artifact),
TargetSchemaVersion = artifact.SchemaVersion,
Project = project,
ModelPath = artifact.Uri.LocalPath,
ProviderManifestToken = artifact.GetProviderManifestToken()
};
// Get the provider manifest token from the existing SSDL.
// We don't want to attempt to get it from provider services since this requires a connection
// which will severely impact the performance of Model First in disconnected scenarios.
// Change startMode and settings appropriately depending on whether there is an existing connection string and whether we can/should connect
// to the database
var connectionString = ConnectionManager.GetConnectionStringObject(project, entityContainerName);
if (connectionString != null)
{
var ecsb = connectionString.Builder;
var runtimeProviderName = ecsb.Provider;
var runtimeProviderConnectionString = ecsb.ProviderConnectionString;
var designTimeProviderConnectionString = connectionString.GetDesignTimeProviderConnectionString(project);
var initialCatalog = String.Empty;
if (checkDatabaseConnection)
{
// This path will check to make sure that we can connect to an existing database before changing the start mode to 'existingConnection'
IVsDataConnection dataConnection = null;
try
{
var dataConnectionManager = serviceProvider.GetService(typeof(IVsDataConnectionManager)) as IVsDataConnectionManager;
Debug.Assert(dataConnectionManager != null, "Could not find IVsDataConnectionManager");
var dataProviderManager = serviceProvider.GetService(typeof(IVsDataProviderManager)) as IVsDataProviderManager;
Debug.Assert(dataProviderManager != null, "Could not find IVsDataProviderManager");
if (dataConnectionManager != null &&
dataProviderManager != null)
{
// this will either get an existing connection or attempt to create a new one
dataConnection = DataConnectionUtils.GetDataConnection(
dataConnectionManager,
dataProviderManager,
connectionString.DesignTimeProviderInvariantName,
designTimeProviderConnectionString);
Debug.Assert(
dataConnection != null,
"Could not find the IVsDataConnection; an exception should have been thrown if this was the case");
if (dataConnection != null)
{
VsUtils.EnsureProvider(runtimeProviderName, settings.UseLegacyProvider, project, serviceProvider);
if (CanCreateAndOpenConnection(
new StoreSchemaConnectionFactory(),
runtimeProviderName,
connectionString.DesignTimeProviderInvariantName,
designTimeProviderConnectionString))
{
startMode = existingConnectionMode;
initialCatalog = DataConnectionUtils.GetInitialCatalog(dataProviderManager, dataConnection);
}
}
}
}
catch
{
// do nothing - we will go to WizardPageDbConfig which is
// what we want if the DB connection fails
}
finally
{
// Close the IVsDataConnection
if (dataConnection != null)
{
try
{
dataConnection.Close();
}
catch
{
}
}
}
}
else
{
// This path will just parse the existing connection string in order to change the start mode. This is ideal for features
// that do not need a database connection -- the information in the connection string is enough.
startMode = existingConnectionMode;
initialCatalog = DataConnectionUtils.GetInitialCatalog(
connectionString.DesignTimeProviderInvariantName, designTimeProviderConnectionString);
}
if (startMode == existingConnectionMode)
{
// the invariant name and connection string came from app.config, so they are "runtime" invariant names and not "design-time"
// (Note: it is OK for InitialCatalog to be null at this stage e.g. from a provider who do not support the concept of Initial Catalog)
settings.SetInvariantNamesAndConnectionStrings(
serviceProvider,
project,
runtimeProviderName,
runtimeProviderConnectionString,
runtimeProviderConnectionString,
false);
settings.InitialCatalog = initialCatalog;
settings.AppConfigConnectionPropertyName = entityContainerName;
settings.SaveConnectionStringInAppConfig = false;
VsUtils.EnsureProvider(runtimeProviderName, settings.UseLegacyProvider, project, serviceProvider);
}
}
return(settings);
}