public static CreateTableMigration FromMemento(MigrationMemento memento, IImmutableDictionary <BigInteger, Migration> migrationsByHashCode)
{
return(new CreateTableMigration(
(UseSchemaMigration)migrationsByHashCode[memento.Prerequisites["Parent"].Single()],
memento.Attributes["TableName"],
memento.Prerequisites["Prerequisites"].Select(p => migrationsByHashCode[p]).ToImmutableList()));
}
public static CreateIndexMigration FromMemento(MigrationMemento memento, IImmutableDictionary <BigInteger, Migration> migrationsByHashCode)
{
return(new CreateIndexMigration(
(CreateTableMigration)migrationsByHashCode[memento.Prerequisites["Parent"].Single()],
memento.Prerequisites["Columns"].Select(p => migrationsByHashCode[p]).OfType <CreateColumnMigration>(),
memento.Prerequisites["Prerequisites"].Select(p => migrationsByHashCode[p]).ToImmutableList()));
}
private string GenerateMigrationValue(MigrationMemento migration)
{
string attributes = JsonConvert.SerializeObject(migration.Attributes);
string hex = $"0x{migration.HashCode.ToString("X")}";
return($@"
('{migration.Type}', {hex}, '{attributes.Replace("'", "''")}')");
}
public static CustomSqlMigration FromMemento(MigrationMemento memento, IImmutableDictionary <BigInteger, Migration> migrationsByHashCode)
{
return(new CustomSqlMigration(
memento.Attributes["DatabaseName"],
memento.Attributes["Up"],
memento.Attributes["Down"],
memento.Prerequisites["Prerequisites"].Select(p => migrationsByHashCode[p]).ToImmutableList()));
}
public static CreateColumnMigration FromMemento(MigrationMemento memento, IImmutableDictionary <BigInteger, Migration> migrationsByHashCode)
{
return(new CreateColumnMigration(
(CreateTableMigration)migrationsByHashCode[memento.Prerequisites["Parent"].Single()],
memento.Attributes["ColumnName"],
memento.Attributes["TypeDescriptor"],
memento.Attributes["Nullable"] == "true",
memento.Prerequisites["Prerequisites"].Select(x => migrationsByHashCode[x]).ToImmutableList()));
}
public static CreateForeignKeyMigration FromMemento(MigrationMemento memento, IImmutableDictionary <BigInteger, Migration> migrationsByHashCode)
{
return(new CreateForeignKeyMigration(
(CreateIndexMigration)migrationsByHashCode[memento.Prerequisites["Parent"].Single()],
(CreatePrimaryKeyMigration)migrationsByHashCode[memento.Prerequisites["Referencing"].Single()],
memento.Attributes["CascadeDelete"] == "true",
memento.Attributes["CascaseUpdate"] == "true",
memento.Prerequisites["Prerequisites"].Select(x => migrationsByHashCode[x]).ToImmutableList()));
}
private static MigrationMemento LoadMemento(LookaheadEnumerator <MigrationHistoryRow> enumerator)
{
var type = enumerator.Current.Type;
var hashCode = enumerator.Current.HashCode;
var attributes = enumerator.Current.Attributes;
var roles = LoadRoles(hashCode, enumerator);
var migrationAttributes = JsonConvert.DeserializeObject <Dictionary <string, string> >(attributes);
var memento = new MigrationMemento(
type,
migrationAttributes,
hashCode,
roles);
return(memento);
}
