StatusManager.java

/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <hr>
* <a href="http://www.openolat.org">
* OpenOLAT - Online Learning and Training</a><br>
* This file has been modified by the OpenOLAT community. Changes are licensed
* under the Apache 2.0 license as the original file.
*/

package org.olat.course.nodes.ta;

import org.olat.core.id.Identity;
import org.olat.core.manager.BasicManager;
import org.olat.course.nodes.CourseNode;
import org.olat.course.properties.CoursePropertyManager;
import org.olat.course.run.userview.UserCourseEnvironment;
import org.olat.properties.Property;

/**
 * Store the status of a task. The task status will be stored in the DB property table.
 * 
 * <P>
 * Initial Date:  24.04.2006 <br>
 * @author guretzki
 */
public class StatusManager extends BasicManager {
	private static StatusManager statusManager = new StatusManager();

	// Name used to save user STATUS-FORM data in the properties table
	public static final String PROPERTY_KEY_STATUS = "TASK_STATUS";

	/**
	 * @return Return singleton instance
	 */
	public static StatusManager getInstance() {
		return statusManager;
	}

	private StatusManager() {
	// singleton
	}

	/**
	 * Initializes the user profile with the data from the database
	 * 
	 * @param ident The current Subject
	 */
	public void loadStatusFormData(StatusForm statusForm, CourseNode node, UserCourseEnvironment userCourseEnv) {
		Identity identity = userCourseEnv.getIdentityEnvironment().getIdentity();
		CoursePropertyManager cpm = userCourseEnv.getCourseEnvironment().getCoursePropertyManager();
		Property statusProperty;

		statusProperty = cpm.findCourseNodeProperty(node, identity, null, PROPERTY_KEY_STATUS);
		if (statusProperty == null) {
			// found no status property => init DEFAULT value
			statusForm.setSelectedStatus(StatusForm.STATUS_VALUE_INITIAL);
		} else {
			String value = statusProperty.getStringValue();
			statusForm.setSelectedStatus(value);
		}
	}

	public void saveStatusFormData(StatusForm statusForm, CourseNode node, UserCourseEnvironment userCourseEnv) {
		Identity identity = userCourseEnv.getIdentityEnvironment().getIdentity();
		String selectedKey = statusForm.getSelectedStatus();
		
		CoursePropertyManager cpm = userCourseEnv.getCourseEnvironment().getCoursePropertyManager();
		Property statusProperty;

		statusProperty = cpm.findCourseNodeProperty(node, identity, null, PROPERTY_KEY_STATUS);
		if (statusProperty == null) {
			statusProperty = cpm.createCourseNodePropertyInstance(node, identity, null, PROPERTY_KEY_STATUS, null, null,selectedKey, null);
			cpm.saveProperty(statusProperty);
		} else {
			statusProperty.setStringValue(selectedKey);
			cpm.updateProperty(statusProperty);
		}	  
	}
	
}