internal override void ApplyMigration(DbMigration migration, DbMigration lastMigration)
{
IMigrationMetadata migrationMetadata = (IMigrationMetadata)migration;
VersionedModel sourceModel1 = this.GetLastModel(lastMigration, migrationMetadata.Id);
VersionedModel sourceModel2 = migration.GetSourceModel();
VersionedModel targetModel = migration.GetTargetModel();
if (sourceModel2 != null && this.IsModelOutOfDate(sourceModel2.Model, lastMigration))
{
base.AutoMigrate(migrationMetadata.Id.ToAutomaticMigrationId(), sourceModel1, sourceModel2, false);
sourceModel1 = sourceModel2;
}
string defaultSchema = DbMigrator.GetDefaultSchema(migration);
XDocument historyModel = this.GetHistoryModel(defaultSchema);
IEnumerable <MigrationOperation> systemOperations = Enumerable.Empty <MigrationOperation>();
if (object.ReferenceEquals((object)sourceModel1.Model, (object)this._emptyModel.Value) && !base.HistoryExists())
{
systemOperations = (IEnumerable <MigrationOperation>) this._modelDiffer.Diff(this._emptyModel.Value, historyModel, (Lazy <ModificationCommandTreeGenerator>)null, (MigrationSqlGenerator)null, (string)null, (string)null);
}
else
{
string lastDefaultSchema = this.GetLastDefaultSchema(migrationMetadata.Id);
if (!string.Equals(lastDefaultSchema, defaultSchema, StringComparison.Ordinal))
{
systemOperations = (IEnumerable <MigrationOperation>) this._modelDiffer.Diff(this.GetHistoryModel(lastDefaultSchema), historyModel, (Lazy <ModificationCommandTreeGenerator>)null, (MigrationSqlGenerator)null, (string)null, (string)null);
}
}
migration.Up();
this.ExecuteOperations(migrationMetadata.Id, targetModel, migration.Operations, systemOperations, false, false);
}
private VersionedModel GetLastModel(
DbMigration lastMigration,
string currentMigrationId = null)
{
if (lastMigration != null)
{
return(lastMigration.GetTargetModel());
}
string migrationId;
string productVersion;
XDocument lastModel = this._historyRepository.GetLastModel(out migrationId, out productVersion, (string)null);
if (lastModel != null && (currentMigrationId == null || string.CompareOrdinal(migrationId, currentMigrationId) < 0))
{
return(new VersionedModel(lastModel, productVersion));
}
return(new VersionedModel(this._emptyModel.Value, (string)null));
}