/*
    *
    * 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.operation;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.dbunit.database.IDatabaseConnection;
  import org.dbunit.dataset.Column;
  import org.dbunit.dataset.DataSetException;
  import org.dbunit.dataset.ITable;
  import org.dbunit.dataset.ITableMetaData;
  
  import java.util.BitSet;
  
  /**
   * Inserts the dataset contents into the database. This operation assumes that
   * table data does not exist in the database and fails if this is not the case.
   * To prevent problems with foreign keys, tables must be sequenced appropriately
   * in dataset.
   *
   * @author Manuel Laflamme
   * @version $Revision$
   * @since Feb 18, 2002
   */
  public class InsertOperation extends AbstractBatchOperation
  {
  
      /**
       * Logger for this class
       */
      private static final Logger logger = LoggerFactory.getLogger(InsertOperation.class);
  
      InsertOperation()
      {
      }
  
      ////////////////////////////////////////////////////////////////////////////
      // AbstractBatchOperation class
  
      public OperationData getOperationData(ITableMetaData metaData,
              BitSet ignoreMapping, IDatabaseConnection connection) throws DataSetException
      {
      	if (logger.isDebugEnabled())
      	{
      		logger.debug("getOperationData(metaData={}, ignoreMapping={}, connection={}) - start",
      				metaData, ignoreMapping, connection);
      	}
  
          Column[] columns = metaData.getColumns();
  
          // insert
          final StringBuilder sqlBuffer = new StringBuilder(128);
          sqlBuffer.append("insert into ");
          sqlBuffer.append(getQualifiedName(connection.getSchema(),
                  metaData.getTableName(), connection));
  
          // columns
          sqlBuffer.append(" (");
          String columnSeparator = "";
          for (int i = 0; i < columns.length; i++)
          {
              if (!ignoreMapping.get(i))
              {
                  // escape column name
                  String columnName = getQualifiedName(null,
                          columns[i].getColumnName(), connection);
                  sqlBuffer.append(columnSeparator);
                  sqlBuffer.append(columnName);
                  columnSeparator = ", ";
              }
          }
  
          // values
          sqlBuffer.append(") values (");
          String valueSeparator = "";
          for (int i = 0; i < columns.length; i++)
          {
              if (!ignoreMapping.get(i))
              {
                 sqlBuffer.append(valueSeparator);
                 sqlBuffer.append("?");
                 valueSeparator = ", ";
             }
         }
         sqlBuffer.append(")");
 
         return new OperationData(sqlBuffer.toString(), columns);
     }
 
     protected BitSet getIgnoreMapping(ITable table, int row) throws DataSetException
     {
     	logger.debug("getIgnoreMapping(table={}, row={}) - start", table, row);
 
         Column[] columns = table.getTableMetaData().getColumns();
 
         BitSet ignoreMapping = new BitSet();
         for (int i = 0; i < columns.length; i++)
         {
             Column column = columns[i];
             Object value = table.getValue(row, column.getColumnName());
             if (value == ITable.NO_VALUE
                 || (value == null && column.isNotNullable() && column.hasDefaultValue()))
             {
                 ignoreMapping.set(i);
             }
         }
         return ignoreMapping;
     }
 
     protected boolean equalsIgnoreMapping(BitSet ignoreMapping, ITable table,
             int row) throws DataSetException
     {
     	logger.debug("equalsIgnoreMapping(ignoreMapping={}, table={}, row={}) - start",
     			 ignoreMapping, table, row);
 
         Column[] columns = table.getTableMetaData().getColumns();
 
         for (int i = 0; i < columns.length; i++)
         {
             boolean bit = ignoreMapping.get(i);
             Object value = table.getValue(row, columns[i].getColumnName());
             if ((bit && value != ITable.NO_VALUE) || (!bit && value == ITable.NO_VALUE))
             {
                 return false;
             }
         }
 
         return true;
     }
 }