private void initialize(String schema) {
    hbTable = new Table(schema, TABLE_NAME);
    hbId = new Column("id", Types.BIGINT, true); // true => isNotNull
    hbSeqno = new Column("seqno", Types.BIGINT);
    hbEventId = new Column("eventid", Types.VARCHAR, 128);
    hbSourceTstamp = new Column("source_tstamp", Types.TIMESTAMP);
    hbTargetTstamp = new Column("target_tstamp", Types.TIMESTAMP);
    hbLagMillis = new Column("lag_millis", Types.BIGINT);
    hbSalt = new Column("salt", Types.BIGINT);
    hbName = new Column("name", Types.VARCHAR, 128);

    Key hbKey = new Key(Key.Primary);
    hbKey.AddColumn(hbId);

    hbTable.AddColumn(hbId);
    hbTable.AddColumn(hbSeqno);
    hbTable.AddColumn(hbEventId);
    hbTable.AddColumn(hbSourceTstamp);
    hbTable.AddColumn(hbTargetTstamp);
    hbTable.AddColumn(hbLagMillis);
    hbTable.AddColumn(hbSalt);
    hbTable.AddColumn(hbName);
    hbTable.AddKey(hbKey);

    sourceTsQuery = "SELECT source_tstamp from " + schema + "." + TABLE_NAME + " where id=" + KEY;
  }
  private void initializeStage(String schema) {
    hbStageTable = new Table(schema, STAGE_TABLE_NAME);
    hbTOpcode = new Column("tungsten_opcode", Types.VARCHAR, 2);
    hbTSeqno = new Column("tungsten_seqno", Types.BIGINT, true);
    hbTRowId = new Column("tungsten_row_id", Types.BIGINT, true);
    hbTCommitTstamp = new Column("tungsten_commit_timestamp", Types.TIMESTAMP);

    Key hbKey = new Key(Key.Primary);

    hbKey.AddColumn(hbTOpcode);
    hbKey.AddColumn(hbTSeqno);
    hbKey.AddColumn(hbTRowId);

    hbStageTable.AddColumn(hbTOpcode);
    hbStageTable.AddColumn(hbTSeqno);
    hbStageTable.AddColumn(hbTRowId);
    hbStageTable.AddColumn(hbTCommitTstamp);
    hbStageTable.AddColumn(hbId);
    hbStageTable.AddColumn(hbSeqno);
    hbStageTable.AddColumn(hbEventId);
    hbStageTable.AddColumn(hbSourceTstamp);
    hbStageTable.AddColumn(hbTargetTstamp);
    hbStageTable.AddColumn(hbLagMillis);
    hbStageTable.AddColumn(hbSalt);
    hbStageTable.AddColumn(hbName);
    hbStageTable.AddKey(hbKey);
  }