/// <summary>
/// Drops the types.
/// </summary>
internal static void Drop(StreamWriter writer, [NullGuard.AllowNull] PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
if (oldSchema == null)
{
return;
}
foreach (PgType oldType in oldSchema.Types)
{
if (!newSchema.ContainsType(oldType.Signature))
{
List <string> newValues = newSchema.TypeEntriesChanged(oldType);
if (newValues != null)
{
AddDefinition(writer, oldType, newValues, searchPathHelper);
}
else
{
var newType = newSchema.GetEnum(oldType.Name);
if (newType != null)
{
// definitions of type changed
// to avoid conflicts, dont delete schema and ignore the additional definition
writer.WriteLine("-- Type was not dropped because of conflicts");
}
else
{
// type was deleted
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.WriteLine(oldType.DropSQL);
}
}
}
}
}
