How to use

SchemaChange

in

leap.db.change

/**
 * Returns the add only changes (no update and remove).
 */
default SchemaChanges addOnly() {
  return filter((c) -> c.isAdd());
}

private void printDbMigrationHelp(DbMigrateException e) {
  Throwable cause = e.getCause();
  if(cause instanceof UnsupportedChangeException) {
    SchemaChange change = ((UnsupportedChangeException) cause).getChange();
    System.out.println("\nchange -> " + change.toJson() + "\n");
  }
  if(isDev()) {
    System.out.println("\n*** You can exec command line 'jmms dev reset' to drops db and reload ***\n");
  }
}

@Override
public void toJson(JsonWriter writer) {
  writer.startObject();
  
  for(SchemaChange change : this){
    writer.key(getChangeName(change));
    change.toJson(writer);
  }
  
  writer.endObject();
}