/**

  * SQL-DK

  * Copyright © 2014 František Kučera (frantovo.cz)

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License, or

  * (at your option) any later version.

  *

  * This program 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 General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. If not, see <http://www.gnu.org/licenses/>.

  */

 package info.globalcode.jdbc.loopback;

 import java.sql.SQLException;

 import java.sql.SQLWarning;

 import java.sql.Types;

 import java.util.ArrayList;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 /**

  *

  * @author Ing. František Kučera (frantovo.cz)

  */

 public class PreparedStatement extends AbstractPreparedStatement {

 	private Map<Integer, ObjectParameter> parameters = new HashMap<>();

 	private List<Object[]> table;

 	private ResultSetMetaData metadata = new ResultSetMetaData();

 	@Override

 	public void setObject(int parameterIndex, Object data, int targetSqlType) throws SQLException {

 		parameters.put(parameterIndex, new ObjectParameter(data, targetSqlType));

 	}

 	@Override

 	public boolean execute() throws SQLException {

 		if (parameters.size() < 1) {

 			throw new SQLException("Missing first parameter (column count)");

 		} else {

 			int columnCount = Integer.valueOf((String) parameters.get(1).getData());

 			for (int i = 0; i < columnCount; i++) {

 				String label = parameters.get(1 + i + 1).getData().toString();

 				metadata.addColumn(new ResultSetMetaData.ColumnDescriptor(Types.VARCHAR, "VARCHAR", label, label));

 			}

 			int cellIndex = 0;

 			table = new ArrayList<>();

 			Object[] currentRow = null;

 			for (int parameterNumber = (1 + columnCount + 1); true; parameterNumber++) {

 				ObjectParameter data = parameters.get(parameterNumber);

 				if (data == null) {

 					break;

 				} else {

 					int columnIndex = cellIndex % columnCount;

 					cellIndex++;

 					if (columnIndex == 0) {

 						currentRow = new Object[columnCount];

 						table.add(currentRow);

 					}

 					currentRow[columnIndex] = data.getData();

 				}

 			}

 			return true;

 		}

 	}

 	@Override

 	public java.sql.ResultSet getResultSet() throws SQLException {

 		return new ResultSet(metadata, table);

 	}

 	@Override

 	public int getUpdateCount() throws SQLException {

 		return -1;

 	}

 	@Override

 	public boolean getMoreResults() throws SQLException {

 		return false;

 	}

 	@Override

 	public void close() throws SQLException {

 	}

 	@Override

 	public SQLWarning getWarnings() throws SQLException {

 		return null;

 	}

 	@Override

 	public void clearWarnings() throws SQLException {

 	}

 }