QueryTableIterator.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 java.sql.SQLException;
- import java.util.List;
- import org.dbunit.database.QueryDataSet.TableEntry;
- import org.dbunit.dataset.DataSetException;
- import org.dbunit.dataset.ITable;
- import org.dbunit.dataset.ITableIterator;
- import org.dbunit.dataset.ITableMetaData;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
- /**
- * Iterator used to iterate over a list of tables using a specific query for retrieving
- * data for every table.
- *
- * @author Manuel Laflamme
- * @author gommma (gommma AT users.sourceforge.net)
- * @author Last changed by: $Author$
- * @version $Revision$ $Date$
- * @since 1.5.6 (Sep 15, 2003)
- */
- public class QueryTableIterator implements ITableIterator
- {
- /**
- * Logger for this class
- */
- private static final Logger logger = LoggerFactory.getLogger(QueryTableIterator.class);
- private final List _tableEntries;
- private final IDatabaseConnection _connection;
- private IResultSetTable _currentTable;
- private int _index = -1;
- /**
- * @param tableEntries list of {@link TableEntry} objects
- * @param connection The database connection needed to load data
- */
- public QueryTableIterator(List tableEntries, IDatabaseConnection connection)
- {
- if (tableEntries == null) {
- throw new NullPointerException(
- "The parameter 'tableEntries' must not be null");
- }
- if (connection == null) {
- throw new NullPointerException(
- "The parameter 'connection' must not be null");
- }
-
- _tableEntries = tableEntries;
- _connection = connection;
- _currentTable = null;
- }
- ////////////////////////////////////////////////////////////////////////////
- // ITableIterator interface
- /**
- * {@inheritDoc}
- */
- public boolean next() throws DataSetException
- {
- logger.debug("next() - start");
- _index++;
- // Ensure previous table is closed
- if (_currentTable != null)
- {
- _currentTable.close();
- _currentTable = null;
- }
- return _index < _tableEntries.size();
- }
- public boolean nextWithoutClosing()
- {
- _index++;
- _currentTable = null;
- return _index < _tableEntries.size();
- }
- /**
- * {@inheritDoc}
- */
- public ITableMetaData getTableMetaData() throws DataSetException
- {
- logger.debug("getTableMetaData() - start");
- QueryDataSet.TableEntry entry = (QueryDataSet.TableEntry)_tableEntries.get(_index);
- // No query specified, use metadata from dataset
- if (entry.getQuery() == null)
- {
- try
- {
- ITable table = _connection.createTable(entry.getTableName());
- return table.getTableMetaData();
- }
- catch (SQLException e)
- {
- throw new DataSetException(e);
- }
- }
- else
- {
- return getTable().getTableMetaData();
- }
- }
- /**
- * {@inheritDoc}
- */
- public ITable getTable() throws DataSetException
- {
- logger.debug("getTable() - start");
- if (_currentTable == null)
- {
- try
- {
- QueryDataSet.TableEntry entry = (QueryDataSet.TableEntry)_tableEntries.get(_index);
- // No query specified, use table from dataset
- if (entry.getQuery() == null)
- {
- _currentTable = (IResultSetTable)_connection.createTable(entry.getTableName());
- }
- else
- {
- DatabaseConfig config = _connection.getConfig();
- IResultSetTableFactory factory = (IResultSetTableFactory)config.getProperty(
- DatabaseConfig.PROPERTY_RESULTSET_TABLE_FACTORY);
- _currentTable = factory.createTable(entry.getTableName(), entry.getQuery(), _connection);
- }
- }
- catch (SQLException e)
- {
- throw new DataSetException(e);
- }
- }
- return _currentTable;
- }
- }