TaskCommitHandler.java

package se.chalmers.dat255.grupp12;

import java.sql.SQLException;

/**
 * Created with IntelliJ IDEA.
 * User: Haggan
 * Date: 2013-10-16
 * Time: 15:22
 * To change this template use File | Settings | File Templates.
 */
public class TaskCommitHandler extends CommitHandler {

	public TaskCommitHandler(ClientChangeList changes, User user) {
		super(changes,user);
	}

	/**
	 * Insert a new Task to the database
	 * @param m
	 */
	@Override
	public void insert(Modification m) {
		// For structure
		Task task = m.getTask();
		int listId = m.getListId();
		if(listId < 0) {
			listId = changes.getNewId(listId);
		}
		try{
			db.insertTask(task, listId);
		} catch (SQLException e) {
			e.printStackTrace();
		}

	}

	/**
	 * Update an existing task on the database
	 * The modification handled contains a Change which contains a String type
	 * which tells what type of update is to be made
	 * The task is updated accordingly
	 *
	 * @param m - The modification containing the needed information
	 */
	@Override
	public void update(Modification m) {
		Modification.Change change = m.getChange();
		String newValue = change.getTo();

		try {
			Task task = db.getTask(m.getTaskId());
			String type = change.getType();
			switch (type) {
				case Constants.TASK_TITLE:
					task.setTitle(newValue);
					break;
				case Constants.TASK_CONTENT:
					task.setContent(newValue);
					break;
				case Constants.TASK_PRIO:
					task.setPriority(Task.Priority.valueOf(newValue));
					break;
				case Constants.TASK_ISDONE:
					task.isDone(Boolean.parseBoolean(newValue));
					break;
				case Constants.TASK_DUEDATE:
					task.setDate(Utils.parseDate(newValue));
					break;
				case Constants.TASK_ASSIGNUSER:
					System.out.println(newValue + user + task);
					if (Boolean.parseBoolean(newValue)) {
						db.assignUserToTask(task.getId(), user);
						task.assignUser(user);
					} else {
						db.removeUserFromTask(task.getId(), user.getId());
						task.removeUser(user);
					}
					return;     //No update in tasks-table in database
				default:
					throw new UnsupportedOperationException("List change property not implemented:" + type);
			}
			db.updateTask(task.getId(),task);
		} catch (SQLException | DataNotFoundException e) {
			e.printStackTrace();
		}
	}

	/**
	 * Removes a task from the database
	 *
	 * @param m - A modification containing the needed information
	 */
	@Override
	public void delete(Modification m) {
		try {
			db.deleteTask(m.getTaskId());
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}
}