ResultSetMetaData.java

/**
 * C-JDBC: Clustered JDBC.
 * Copyright (C) 2002-2004 French National Institute For Research In Computer
 * Science And Control (INRIA).
 * Contact: c-jdbc@objectweb.org
 * 
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation; either version 2.1 of the License, or any later
 * version.
 * 
 * This library 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 Lesser General Public License
 * for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *
 * Initial developer(s): Emmanuel Cecchet.
 * Contributor(s): __________________.
 */

package org.objectweb.cjdbc.driver;

import java.sql.SQLException;

/**
 * ResultSet metadata provided for pretty printing of the ResultSet by a
 * console.
 * 
 * @author <a href="mailto:Emmanuel.Cecchet@inria.fr">Emmanuel Cecchet</a>
 * @version 1.0
 */
public class ResultSetMetaData implements java.sql.ResultSetMetaData
{
  private DriverResultSet rs;

  /**
   * Constructs a ResultSetMetaData from a C-JDBC ResultSet.
   * 
   * @param rs the ResultSet
   */
  public ResultSetMetaData(DriverResultSet rs)
  {
    this.rs = rs;
  }

  /**
   * @see java.sql.ResultSetMetaData#getColumnCount()
   */
  public int getColumnCount() throws SQLException
  {
    return rs.nbOfColumns;
  }

  /**
   * @see java.sql.ResultSetMetaData#isAutoIncrement(int)
   */
  public boolean isAutoIncrement(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].isAutoIncrement();
  }

  /**
   * @see java.sql.ResultSetMetaData#isCaseSensitive(int)
   */
  public boolean isCaseSensitive(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].isCaseSensitive();
  }

  /**
   * @see java.sql.ResultSetMetaData#isSearchable(int)
   */
  public boolean isSearchable(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].isSearchable();
  }

  /**
   * @see java.sql.ResultSetMetaData#isCurrency(int)
   */
  public boolean isCurrency(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].isCurrency();
  }

  /**
   * @see java.sql.ResultSetMetaData#isNullable(int)
   */
  public int isNullable(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].isNullable();
  }

  /**
   * @see java.sql.ResultSetMetaData#isSigned(int)
   */
  public boolean isSigned(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].isSigned();
  }

  /**
   * @see java.sql.ResultSetMetaData#getColumnDisplaySize(int)
   */
  public int getColumnDisplaySize(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].getColumnDisplaySize();
  }

  /**
   * @see java.sql.ResultSetMetaData#getColumnLabel(int)
   */
  public String getColumnLabel(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].getFieldName();
  }

  /**
   * @see java.sql.ResultSetMetaData#getColumnName(int)
   */
  public String getColumnName(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].getFieldName();
  }

  /**
   * @see java.sql.ResultSetMetaData#getSchemaName(int)
   */
  public String getSchemaName(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].getFullName();
  }

  /**
   * @see java.sql.ResultSetMetaData#getPrecision(int)
   */
  public int getPrecision(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].getPrecision();
  }

  /**
   * @see java.sql.ResultSetMetaData#getScale(int)
   */
  public int getScale(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].getScale();
  }

  /**
   * @see java.sql.ResultSetMetaData#getTableName(int)
   */
  public String getTableName(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].getTableName();
  }

  /**
   * @see java.sql.ResultSetMetaData#getCatalogName(int)
   */
  public String getCatalogName(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return "";
  }

  /**
   * @see java.sql.ResultSetMetaData#getColumnType(int)
   */
  public int getColumnType(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].getSqlType();
  }

  /**
   * @see java.sql.ResultSetMetaData#getColumnTypeName(int)
   */
  public String getColumnTypeName(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].getTypeName();
  }

  /**
   * @see java.sql.ResultSetMetaData#isReadOnly(int)
   */
  public boolean isReadOnly(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].isReadOnly();
  }

  /**
   * @see java.sql.ResultSetMetaData#isWritable(int)
   */
  public boolean isWritable(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].isWritable();
  }

  /**
   * @see java.sql.ResultSetMetaData#isDefinitelyWritable(int)
   */
  public boolean isDefinitelyWritable(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].isDefinitelyWritable();
  }

  /**
   * @see java.sql.ResultSetMetaData#getColumnClassName(int)
   */
  public String getColumnClassName(int column) throws SQLException
  {
    if ((column < 1) || (column > rs.nbOfColumns))
      throw new SQLException("Invalid column index " + column);
    return rs.fields[column - 1].getColumnClassName();
  }

}

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