Program: 43567
Project: 43567
Buggy source:
public void execute(Connection conn) throws DaoException {
  mergeCondition();
  updateCount=-1;
  boolean statIsClosed=false;
  try {
    if (sql.isSELECT()) {
      if (null != callback) {
        Pager pager=context.getPager();
        int rsType=null == pager ? ResultSet.TYPE_FORWARD_ONLY : pager.getResultSetType();
        PreparedStatement stat=null;
        ResultSet rs=null;
        try {
          String sqlStr=sql.toPreparedStatementString();
          stat=conn.prepareStatement(sqlStr,rsType,ResultSet.CONCUR_READ_ONLY);
          adapter.process(stat,sql,entity);
          rs=stat.executeQuery();
          context.setResult(callback.invoke(conn,rs,this));
        }
  finally {
          Daos.safeClose(stat,rs);
        }
      }
    }
 else     if (sql.isUPDATE() || sql.isINSERT() || sql.isDELETE()|| sql.isTRUNCATE()) {
      PreparedStatement stat=null;
      try {
        String sqlStr=sql.toPreparedStatementString();
        stat=conn.prepareStatement(sqlStr);
        adapter.process(stat,sql,entity);
        stat.execute();
        updateCount=stat.getUpdateCount();
        stat.close();
        statIsClosed=true;
        if (null != callback)         context.setResult(callback.invoke(conn,null,this));
      }
  finally {
        if (!statIsClosed)         Daos.safeClose(stat);
      }
    }
 else {
      Statement stat=null;
      try {
        stat=conn.createStatement();
        stat.execute(sql.toString());
        stat.close();
        if (null != callback)         context.setResult(callback.invoke(conn,null,this));
      }
  finally {
        if (!statIsClosed)         Daos.safeClose(stat);
      }
    }
  }
 catch (  SQLException e) {
    throw new DaoException(format("String_Node_Str",sql.toString(),sql.toPreparedStatementString()),e);
  }
}

Fixed version (ground truth):
public void execute(Connection conn) throws DaoException {
  mergeCondition();
  updateCount=-1;
  boolean statIsClosed=false;
  try {
    if (sql.isSELECT()) {
      if (null != callback) {
        Pager pager=context.getPager();
        int rsType=null == pager ? ResultSet.TYPE_FORWARD_ONLY : pager.getResultSetType();
        PreparedStatement stat=null;
        ResultSet rs=null;
        try {
          String sqlStr=sql.toPreparedStatementString();
          if (log.isDebugEnabled())           log.debug("String_Node_Str" + sqlStr);
          stat=conn.prepareStatement(sqlStr,rsType,ResultSet.CONCUR_READ_ONLY);
          adapter.process(stat,sql,entity);
          rs=stat.executeQuery();
          context.setResult(callback.invoke(conn,rs,this));
        }
  finally {
          Daos.safeClose(stat,rs);
        }
      }
    }
 else     if (sql.isUPDATE() || sql.isINSERT() || sql.isDELETE()|| sql.isTRUNCATE()) {
      PreparedStatement stat=null;
      try {
        String sqlStr=sql.toPreparedStatementString();
        if (log.isDebugEnabled())         log.debug("String_Node_Str" + sqlStr);
        stat=conn.prepareStatement(sqlStr);
        adapter.process(stat,sql,entity);
        stat.execute();
        updateCount=stat.getUpdateCount();
        stat.close();
        statIsClosed=true;
        if (null != callback)         context.setResult(callback.invoke(conn,null,this));
      }
  finally {
        if (!statIsClosed)         Daos.safeClose(stat);
      }
    }
 else {
      Statement stat=null;
      try {
        stat=conn.createStatement();
        stat.execute(sql.toString());
        stat.close();
        if (null != callback)         context.setResult(callback.invoke(conn,null,this));
      }
  finally {
        if (!statIsClosed)         Daos.safeClose(stat);
      }
    }
  }
 catch (  SQLException e) {
    throw new DaoException(format("String_Node_Str",sql.toString(),sql.toPreparedStatementString()),e);
  }
}