IsGlobalAuthorFunction.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.condition.interpreter;

import org.olat.course.editor.CourseEditorEnv;
import org.olat.course.run.userview.UserCourseEnvironment;

/**
 * @author Felix Jost
 *
 */
public class IsGlobalAuthorFunction extends AbstractFunction {
	
	public static final String name = "isGlobalAuthor";

	/**
	 * @param userCourseEnv
	 */
	public IsGlobalAuthorFunction(UserCourseEnvironment userCourseEnv) {
		super(userCourseEnv);
	}

	/**
	 * @see com.neemsoft.jmep.FunctionCB#call(java.lang.Object[])
	 */
	public Object call(Object[] inStack) {
		/*
		 * expression check only if cev != null
		 */
		CourseEditorEnv cev = getUserCourseEnv().getCourseEditorEnv();
		if (cev != null) {
			// return a valid value to continue with condition evaluation test
			return defaultValue();
		}

		boolean isGlobalAuthor = getUserCourseEnv().getIdentityEnvironment().getRoles().isAuthor();
		return isGlobalAuthor? ConditionInterpreter.INT_TRUE: ConditionInterpreter.INT_FALSE;
	}

	protected Object defaultValue() {
		return ConditionInterpreter.INT_TRUE;
	}

}