/**
* 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.assessment.EfficiencyStatement;
import org.olat.course.assessment.EfficiencyStatementManager;
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.userview.UserCourseEnvironment;
/**
* Description:<br>
* Get the score of a node in using the efficiency statement from another course
* Initial Date: 11.08.2005 <br>
* @author gnaegi
*/
public class GetScoreWithCourseIdFunction extends AbstractFunction {
public static final String name = "getScoreWithCourseId";
/**
* Default constructor to use the current date
*
* @param userCourseEnv
*/
public GetScoreWithCourseIdFunction(UserCourseEnvironment userCourseEnv) {
super(userCourseEnv);
}
/**
* @see com.neemsoft.jmep.FunctionCB#call(java.lang.Object[])
*/
public Object call(Object[] inStack) {
/*
* argument check
*/
if (inStack.length > 2) {
return handleException(new ArgumentParseException(ArgumentParseException.NEEDS_FEWER_ARGUMENTS, name, "", "error.fewerargs",
"solution.provideone.nodereference"));
} else if (inStack.length < 2) { return handleException( new ArgumentParseException(ArgumentParseException.NEEDS_MORE_ARGUMENTS, name, "",
"error.moreargs", "solution.provideone.nodereference")); }
/*
* argument type check
*/
//TODO argument check courseRepoEntryKey
Long courseRepoEntryKey;
try{
courseRepoEntryKey = Long.decode((String) inStack[0]) ;
}catch(NumberFormatException nfe) {
return handleException( new ArgumentParseException(ArgumentParseException.WRONG_ARGUMENT_FORMAT, name, "",
"error.argtype.coursnodeidexpeted", "solution.example.node.infunction"));
}
if (!(inStack[1] instanceof String)) return handleException( new ArgumentParseException(ArgumentParseException.WRONG_ARGUMENT_FORMAT, name, "",
"error.argtype.coursnodeidexpeted", "solution.example.node.infunction"));
String childId = (String) inStack[1];
/*
* no integrity check can be done - other course might not exist anymore
*/
CourseEditorEnv cev = getUserCourseEnv().getCourseEditorEnv();
if (cev != null) { return defaultValue(); }
/*
* the real function evaluation which is used during run time
*/
EfficiencyStatementManager esm = EfficiencyStatementManager.getInstance();
EfficiencyStatement es = esm.getUserEfficiencyStatement(courseRepoEntryKey, getUserCourseEnv().getIdentityEnvironment().getIdentity());
if (es == null) return defaultValue();
Double score = esm.getScore(childId, es);
if (score == null) return defaultValue();
// finally check existing value
return score;
}
/**
* @see org.olat.course.condition.interpreter.AbstractFunction#defaultValue()
*/
protected Object defaultValue() {
return new Double(Double.MIN_VALUE);
}
}