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ResultSetUtil.java

/*
 Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
 

  The MySQL Connector/J is licensed under the terms of the GPLv2
  <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
  There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
  this software, see the FLOSS License Exception
  <http://www.mysql.com/about/legal/licensing/foss-exception.html>.

  This program is free software; you can redistribute it and/or modify it under the terms
  of the GNU General Public License as published by the Free Software Foundation; version 2
  of the License.

  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU General Public License for more details.

  You should have received a copy of the GNU General Public License along with this
  program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
  Floor, Boston, MA 02110-1301  USA


 
 */
package com.mysql.jdbc.util;

import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;

/**
 * Utilities for dealing with result sets (used in testcases and profiler).
 * 
 * @author Mark Matthews
 * 
 * @version $Id$
 */
00039 public class ResultSetUtil {

      public static StringBuffer appendResultSetSlashGStyle(
                  StringBuffer appendTo, ResultSet rs) throws SQLException {
            ResultSetMetaData rsmd = rs.getMetaData();

            int numFields = rsmd.getColumnCount();
            int maxWidth = 0;

            String[] fieldNames = new String[numFields];

            for (int i = 0; i < numFields; i++) {
                  fieldNames[i] = rsmd.getColumnLabel(i + 1);

                  if (fieldNames[i].length() > maxWidth) {
                        maxWidth = fieldNames[i].length();
                  }
            }

            int rowCount = 1;

            while (rs.next()) {
                  appendTo.append("*************************** ");
                  appendTo.append(rowCount++);
                  appendTo.append(". row ***************************\n");

                  for (int i = 0; i < numFields; i++) {
                        int leftPad = maxWidth - fieldNames[i].length();

                        for (int j = 0; j < leftPad; j++) {
                              appendTo.append(" ");
                        }

                        appendTo.append(fieldNames[i]);
                        appendTo.append(": ");

                        String stringVal = rs.getString(i + 1);

                        if (stringVal != null) {
                              appendTo.append(stringVal);
                        } else {
                              appendTo.append("NULL");
                        }

                        appendTo.append("\n");
                  }

                  appendTo.append("\n");
            }

            return appendTo;
      }
}

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