private final PerUserPoolDataSource dataSource = new PerUserPoolDataSource();

  @com.google.inject.Inject(optional = true)
  public void setConnectionPoolDataSource(ConnectionPoolDataSource cpds) {
    dataSource.setConnectionPoolDataSource(cpds);
  }

  @com.google.inject.Inject(optional = true)
  public void setDataSourceName(@Named("DBCP.name") String name) {
    dataSource.setDataSourceName(name);
  }

  @com.google.inject.Inject(optional = true)
  public void setDefaultAutoCommit(@Named("JDBC.autoCommit") boolean autoCommit) {
    dataSource.setDefaultAutoCommit(autoCommit);
  }

  @com.google.inject.Inject(optional = true)
  public void setDefaultReadOnly(@Named("DBCP.defaultReadOnly") boolean defaultReadOnly) {
    dataSource.setDefaultReadOnly(defaultReadOnly);
  }

  @com.google.inject.Inject(optional = true)
  public void setDefaultTransactionIsolation(
      @Named("DBCP.defaultTransactionIsolation") int defaultTransactionIsolation) {
    dataSource.setDefaultTransactionIsolation(defaultTransactionIsolation);
  }

  @com.google.inject.Inject(optional = true)
  public void setDescription(@Named("DBCP.description") String description) {
    dataSource.setDescription(description);
  }

  @com.google.inject.Inject(optional = true)
  public void setJndiEnvironment(@Named("DBCP.jndi.key") String key, @Named("DBCP.jndi.value") String value) {
    dataSource.setJndiEnvironment(key, value);
  }

  @com.google.inject.Inject(optional = true)
  public void setLoginTimeout(@Named("JDBC.loginTimeout") int loginTimeout) {
    dataSource.setLoginTimeout(loginTimeout);
  }

  @com.google.inject.Inject(optional = true)
  public void setDefaultMinEvictableIdleTimeMillis(
      @Named("DBCP.defaultMinEvictableIdleTimeMillis") int defaultMinEvictableIdleTimeMillis) {
    dataSource.setDefaultMinEvictableIdleTimeMillis(defaultMinEvictableIdleTimeMillis);
  }

  @com.google.inject.Inject(optional = true)
  public void setDefaultNumTestsPerEvictionRun(
      @Named("DBCP.defaultNumTestsPerEvictionRun") int defaultNumTestsPerEvictionRun) {
    dataSource.setDefaultNumTestsPerEvictionRun(defaultNumTestsPerEvictionRun);
  }

  @com.google.inject.Inject(optional = true)
  public void setRollbackAfterValidation(@Named("DBCP.rollbackAfterValidation") boolean rollbackAfterValidation) {
    dataSource.setRollbackAfterValidation(rollbackAfterValidation);
  }

  @com.google.inject.Inject(optional = true)
  public void setDefaultTestOnBorrow(@Named("DBCP.defaultTestOnBorrow") boolean defaultTestOnBorrow) {
    dataSource.setDefaultTestOnBorrow(defaultTestOnBorrow);
  }

  @com.google.inject.Inject(optional = true)
  public void setDefaultTestOnReturn(@Named("DBCP.defaultTestOnReturn") boolean defaultTestOnReturn) {
    dataSource.setDefaultTestOnReturn(defaultTestOnReturn);
  }

  @com.google.inject.Inject(optional = true)
  public void setDefaultTestWhileIdle(@Named("DBCP.defaultTestWhileIdle") boolean defaultTestWhileIdle) {
    dataSource.setDefaultTestWhileIdle(defaultTestWhileIdle);
  }

  @com.google.inject.Inject(optional = true)
  public void setDefaultTimeBetweenEvictionRunsMillis(
      @Named("DBCP.defaultTimeBetweenEvictionRunsMillis") int defaultTimeBetweenEvictionRunsMillis) {
    dataSource.setDefaultTimeBetweenEvictionRunsMillis(defaultTimeBetweenEvictionRunsMillis);
  }

  @com.google.inject.Inject(optional = true)
  public void setValidationQuery(@Named("DBCP.validationQuery") String validationQuery) {
    dataSource.setValidationQuery(validationQuery);
  }

  @com.google.inject.Inject(optional = true)
  public void setDefaultMaxTotal(@Named("DBCP.defaultMaxTotal") int defaultMaxTotal) {

dataSource = new PooledDataSource(driverClassLoader, driver, url, null, null);
  }

  /**
   * Sets the user.
   *
   * @param username
   *          the new user
   *
   * @since 3.3
   */
  @com.google.inject.Inject(optional = true)
  public void setUser(@Named("JDBC.username") final String username) {
    dataSource.setUsername(username);
  }

  /**
   * Sets the password.
   *
   * @param password
   *          the new password
   *
   * @since 3.3
   */
  @com.google.inject.Inject(optional = true)
  public void setPassword(@Named("JDBC.password") final String password) {
    dataSource.setPassword(password);
  }

  /**
   * Sets the auto commit.
   *
   * @param autoCommit
   *          the new auto commit
   */
  @com.google.inject.Inject(optional = true)
  public void setAutoCommit(@Named("JDBC.autoCommit") final boolean autoCommit) {
    dataSource.setDefaultAutoCommit(autoCommit);
  }

  /**
   * Sets the login timeout.
   *
   * @param loginTimeout
   *          the new login timeout
   */
  @com.google.inject.Inject(optional = true)
  public void setLoginTimeout(@Named("JDBC.loginTimeout") final int loginTimeout) {

log.debug(id + ": call prepare old state=" + xlatedState() + ", XID=" + xid);
    }

    if (xid == null) {
      throw new MyBatisXAException(id + ": XID cannot be null", XAException.XAER_INVAL);
    }

    if (state == NO_TX) {
      throw new MyBatisXAException(id + ": resource never started on XID " + xid, XAException.XAER_PROTO);
    } else if (state == STARTED) {
      throw new MyBatisXAException(id + ": resource never ended on XID " + xid, XAException.XAER_PROTO);
    } else if (state == ENDED) {
      if (this.xid.equals(xid)) {
        if (log.isDebugEnabled()) {
          log.debug(id + ": OK to prepare, old state=" + xlatedState() + ", XID=" + xid);