ForwardOnlyResultSetTable.java
- /*
- *
- * The DbUnit Database Testing Framework
- * Copyright (C)2002-2004, DbUnit.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 (at your option) 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
- *
- */
- package org.dbunit.database;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
- import org.dbunit.dataset.Column;
- import org.dbunit.dataset.DataSetException;
- import org.dbunit.dataset.ITableMetaData;
- import org.dbunit.dataset.RowOutOfBoundsException;
- import java.sql.ResultSet;
- import java.sql.SQLException;
- /**
- * @author Manuel Laflamme
- * @since Apr 10, 2003
- * @version $Revision$
- */
- public class ForwardOnlyResultSetTable extends AbstractResultSetTable
- {
- /**
- * Logger for this class
- */
- private static final Logger logger = LoggerFactory.getLogger(ForwardOnlyResultSetTable.class);
- private int _lastRow = -1;
- private boolean _eot = false; // End of table flag
- public ForwardOnlyResultSetTable(ITableMetaData metaData,
- ResultSet resultSet) throws SQLException, DataSetException
- {
- super(metaData, resultSet);
- }
- public ForwardOnlyResultSetTable(ITableMetaData metaData,
- IDatabaseConnection connection) throws DataSetException, SQLException
- {
- super(metaData, connection);
- }
- public ForwardOnlyResultSetTable(String tableName, String selectStatement,
- IDatabaseConnection connection) throws DataSetException, SQLException
- {
- super(tableName, selectStatement, connection);
- }
- // //////////////////////////////////////////////////////////////////////////
- // ITable interface
- public int getRowCount()
- {
- throw new UnsupportedOperationException();
- }
- public Object getValue(int row, String columnName) throws DataSetException
- {
- if(logger.isDebugEnabled())
- logger.debug("getValue(row={}, columnName={}) - start", Integer.toString(row), columnName);
- try
- {
- // Move cursor forward up to specified row
- while (!_eot && row > _lastRow)
- {
- _eot = !_resultSet.next();
- _lastRow++;
- }
- if (row < _lastRow)
- {
- throw new UnsupportedOperationException("Cannot go backward!");
- }
- if (_eot || row > _lastRow)
- {
- // Proactively close the resultset
- close();
- throw new RowOutOfBoundsException(row + " > " + _lastRow);
- }
- int columnIndex = getColumnIndex(columnName);
- Column column = _metaData.getColumns()[columnIndex];
- return column.getDataType().getSqlValue(columnIndex + 1, _resultSet);
- }
- catch (SQLException e)
- {
- throw new DataSetException(e);
- }
- }
- /**
- * {@inheritDoc}
- */
- public String toString()
- {
- StringBuilder sb = new StringBuilder(2000);
- sb.append(super.toString());
- sb.append(", ");
- sb.append(getClass().getName()).append("[");
- sb.append("_eot=[").append(_eot).append("], ");
- sb.append("_lastRow=[").append(_lastRow).append("]");
- sb.append("]");
- return sb.toString();
- }
- }