/**
* 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.
* <p>
*/
package org.olat.course.condition.interpreter.score;
import org.olat.course.condition.interpreter.AbstractFunction;
import org.olat.course.condition.interpreter.ArgumentParseException;
import org.olat.course.editor.CourseEditorEnv;
import org.olat.course.run.scoring.ScoreAccounting;
import org.olat.course.run.userview.UserCourseEnvironment;
/**
* Description:<br>
* @author Felix Jost
*/
public class GetScoreFunction extends AbstractFunction {
public static final String name = "getScore";
/**
* Default constructor to use the current date
* @param userCourseEnv
*/
public GetScoreFunction(UserCourseEnvironment userCourseEnv) {
super(userCourseEnv);
}
/**
* @see com.neemsoft.jmep.FunctionCB#call(java.lang.Object[])
*/
public Object call(Object[] inStack) {
/*
* argument check
*/
if (inStack.length > 1) {
return handleException( new ArgumentParseException(ArgumentParseException.NEEDS_FEWER_ARGUMENTS, name, "", "error.fewerargs",
"solution.provideone.nodereference"));
} else if (inStack.length < 1) { return handleException( new ArgumentParseException(ArgumentParseException.NEEDS_MORE_ARGUMENTS, name, "",
"error.moreargs", "solution.provideone.nodereference")); }
/*
* argument type check
*/
if (!(inStack[0] instanceof String)) return handleException( new ArgumentParseException(ArgumentParseException.WRONG_ARGUMENT_FORMAT, name, "",
"error.argtype.coursnodeidexpeted", "solution.example.node.infunction"));
String childId = (String) inStack[0];
/*
* check reference integrity
*/
CourseEditorEnv cev = getUserCourseEnv().getCourseEditorEnv();
if (cev != null) {
if (!cev.existsNode(childId)) { return handleException( new ArgumentParseException(ArgumentParseException.REFERENCE_NOT_FOUND, name, childId,
"error.notfound.coursenodeid", "solution.copypastenodeid")); }
if (!cev.isAssessable(childId)) { return handleException(new ArgumentParseException(ArgumentParseException.REFERENCE_NOT_FOUND, name,
childId, "error.notassessable.coursenodid", "solution.takeassessablenode")); }
// remember the reference to the node id for this condtion
cev.addSoftReference("courseNodeId", childId);
// return a valid value to continue with condition evaluation test
return defaultValue();
}
/*
* the real function evaluation which is used during run time
*/
ScoreAccounting sa = getUserCourseEnv().getScoreAccounting();
Float score = sa.evalScoreOfCourseNode(childId);
Double dscore = new Double(score.doubleValue());
return dscore;
}
protected Object defaultValue() {
return new Double(Double.MIN_VALUE);
}
}