Пример #1
0
  public void end(Xid xid, int flags) throws XAException {

    validateXid(xid);

    if (state != XA_STATE_STARTED) {
      throw new XAException("Invalid XAResource state");
    }

    try {
      connection.setAutoCommit(originalAutoCommitMode); // real/phys.
    } catch (SQLException se) {
      throw new XAException(se.getMessage());
    }

    state = XA_STATE_ENDED;
  }
Пример #2
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  /**
   * The XAResource API spec indicates implies that this is only for 2-phase transactions. I guess
   * that one-phase transactions need to call rollback() to abort.
   *
   * <p>I think we want this JDBCXAResource instance to be garbage-collectable after (a) this method
   * is called, and (b) the tx manager releases its handle to it.
   *
   * @see javax.transaction.xa.XAResource#forget(Xid)
   */
  public void forget(Xid xid) throws XAException {

    /**
     * Should this method not attempt to clean up the aborted transaction by rolling back or
     * something? Maybe the tx manager will already have called rollback() if it were necessasry?
     */
    validateXid(xid);

    if (state != XA_STATE_PREPARED) {
      throw new XAException(
          "Attempted to forget a XAResource that " + "is not in a heuristically completed state");
    }

    dispose();

    state = XA_STATE_INITIAL;
  }
Пример #3
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  /**
   * Vote on whether to commit the global transaction.
   *
   * @throws XAException to vote negative.
   * @return commitType of XA_RDONLY or XA_OK. (Actually only XA_OK now).
   */
  public int prepare(Xid xid) throws XAException {

    validateXid(xid);

    /**
     * @todo: This is where the real 2-phase work should be done to determine if a commit done here
     *     would succeed or not.
     */

    /**
     * @todo: May improve performance to return XA_RDONLY whenever possible, but I don't know. Could
     *     determine this by checking if DB instance is in RO mode, or perhaps (with much
     *     difficulty) to determine if there have been any modifications performed.
     */
    if (state != XA_STATE_ENDED) {
      throw new XAException("Invalid XAResource state");
    }

    // throw new XAException(
    // "Sorry.  HSQLDB has not implemented 2-phase commits yet");
    state = XA_STATE_PREPARED;

    return XA_OK; // As noted above, should check non-committed work.
  }