/*
    *
    * 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.dataset;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Default table implementation backed by a simple java in-memory list.
   * 
   * @author Manuel Laflamme
   * @version $Revision$
   * @since Feb 17, 2002
   */
  public class DefaultTable extends AbstractTable
  {
  
      /**
       * Logger for this class
       */
      private static final Logger logger = LoggerFactory.getLogger(DefaultTable.class);
  
      private final ITableMetaData _metaData;
      private final List _rowList;
  
      /**
       * Creates a new empty table with specified metadata and values.
       * @deprecated Use public mutators to initialize table values instead
       */
      public DefaultTable(ITableMetaData metaData, List list)
      {
          _metaData = metaData;
          _rowList = list;
      }
  
      /**
       * Creates a new empty table having the specified name.
       */
      public DefaultTable(String tableName)
      {
          _metaData = new DefaultTableMetaData(tableName, new Column[0]);
          _rowList = new ArrayList();
      }
  
      /**
       * Creates a new empty table with specified metadata and values.
       * @deprecated Use public mutators to initialize table values instead
       */
      public DefaultTable(String tableName, Column[] columns, List list)
      {
          _metaData = new DefaultTableMetaData(tableName, columns);
          _rowList = list;
      }
  
      /**
       * Creates a new empty table with specified metadata.
       */
      public DefaultTable(String tableName, Column[] columns)
      {
          _metaData = new DefaultTableMetaData(tableName, columns);
          _rowList = new ArrayList();
      }
  
      public DefaultTable(ITableMetaData metaData)
      {
          _metaData = metaData;
          _rowList = new ArrayList();
      }
  
      /**
       * Inserts a new empty row. You can add values with {@link #setValue}.
       */
      public void addRow() throws DataSetException
      {
          logger.debug("addRow() - start");
  
          int columnCount = _metaData.getColumns().length;
         _rowList.add(new Object[columnCount]);
     }
 
     /**
      * Inserts a new row initialized with specified array of values.
      * @param values The array of values. Each value correspond to the column at the
      * same index from {@link ITableMetaData#getColumns}.
      * @see #getTableMetaData
      */
     public void addRow(Object[] values) throws DataSetException
     {
         logger.debug("addRow(values={}) - start", values);
 
         _rowList.add(values);
     }
 
     /**
      * Inserts all rows from the specified table.
      * @param table The source table.
      */
     public void addTableRows(ITable table) throws DataSetException
     {
         logger.debug("addTableRows(table={}) - start", table);
 
         try
         {
             Column[] columns = _metaData.getColumns();
             if (columns.length <= 0)
             {
             	logger.warn("The table '" + table + "' does not have any columns. Cannot add table rows. This should never happen...");
             	return;
             }
             
             for (int i = 0; ; i++)
             {
                 Object[] rowValues = new Object[columns.length];
                 for (int j = 0; j < columns.length; j++)
                 {
                     Column column = columns[j];
                     rowValues[j] = table.getValue(i, column.getColumnName());
                 }
                 _rowList.add(rowValues);
             }
         }
         catch(RowOutOfBoundsException e)
         {
             // end of table
         	// ignore error.
         }
     }
 
     /**
      * Replaces the value at the specified position in this table with the specified value.
      * @param row The row index
      * @param column The column name
      * @param value The value to store at the specified location
      * @return the value previously at the specified location
      * @throws RowOutOfBoundsException if the row index is out of range
      * @throws NoSuchColumnException if the column does not exist
      * @throws DataSetException if an unexpected error occurs
      */
     public Object setValue(int row, String column, Object value)
             throws RowOutOfBoundsException, NoSuchColumnException, DataSetException
     {
         if(logger.isDebugEnabled())
             logger.debug("setValue(row={}, column={}, value={}) - start", row, column, value);
 
         assertValidRowIndex(row);
 
         Object[] rowValues = (Object[])_rowList.get(row);
         int columnIndex = getColumnIndex(column);
         Object oldValue = rowValues[columnIndex];
         rowValues[columnIndex] = value;
         return oldValue;
     }
 
     ////////////////////////////////////////////////////////////////////////////
     // ITable interface
 
     public ITableMetaData getTableMetaData()
     {
         return _metaData;
     }
 
     public int getRowCount()
     {
         return _rowList.size();
     }
 
     public Object getValue(int row, String column) throws DataSetException
     {
         if(logger.isDebugEnabled())
             logger.debug("getValue(row={}, column={}) - start", Integer.toString(row), column);
 
         assertValidRowIndex(row);
 
         Object[] rowValues = (Object[])_rowList.get(row);
         return rowValues[getColumnIndex(column)];
     }
 
     public String toString()
     {
     	final StringBuilder sb = new StringBuilder();
     	sb.append(getClass().getName()).append("[");
     	sb.append("_metaData=").append(this._metaData == null ? "null" : this._metaData.toString());
     	sb.append(", _rowList.size()=").append(this._rowList == null ? "null" : ""+this._rowList.size());
     	sb.append("]");
     	return sb.toString();
     }
 }