/**
* 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 java.util.List;
import org.olat.core.CoreSpringFactory;
import org.olat.core.id.Identity;
import org.olat.core.logging.OLog;
import org.olat.core.logging.Tracing;
import org.olat.core.util.StringHelper;
import org.olat.course.editor.CourseEditorEnv;
import org.olat.course.groupsandrights.CourseGroupManager;
import org.olat.course.run.userview.UserCourseEnvironment;
import org.olat.group.BusinessGroupService;
/**
* @author Felix Jost
*
*/
public class InLearningGroupFunction extends AbstractFunction {
private static final OLog log = Tracing.createLoggerFor(InLearningGroupFunction.class);
public final String name;
/**
* @param userCourseEnv
*/
public InLearningGroupFunction(UserCourseEnvironment userCourseEnv, String fnName) {
super(userCourseEnv);
this.name = fnName;
}
/**
* @see com.neemsoft.jmep.FunctionCB#call(java.lang.Object[])
*/
@Override
public Object call(Object[] inStack) { /*
* argument check
*/
if (inStack.length > 1) {
return handleException( new ArgumentParseException(ArgumentParseException.NEEDS_FEWER_ARGUMENTS, name, "", "error.fewerargs",
"solution.provideone.groupname"));
} else if (inStack.length < 1) { return handleException( new ArgumentParseException(ArgumentParseException.NEEDS_MORE_ARGUMENTS, name, "",
"error.moreargs", "solution.provideone.groupname")); }
/*
* argument type check
*/
if (!(inStack[0] instanceof String)) return handleException( new ArgumentParseException(ArgumentParseException.WRONG_ARGUMENT_FORMAT, name, "",
"error.argtype.groupnameexpected", "solution.example.name.infunction"));
String groupName = (String)inStack[0];
groupName = groupName != null ? groupName.trim() : null;
/*
* check reference integrity
*/
CourseEditorEnv cev = getUserCourseEnv().getCourseEditorEnv();
if (cev != null) {
if (!cev.existsGroup(groupName)) { return handleException( new ArgumentParseException(ArgumentParseException.REFERENCE_NOT_FOUND, name, groupName,
"error.notfound.name", "solution.checkgroupmanagement")); }
// remember the reference to the node id for this condtion
cev.addSoftReference("groupId", groupName, false);
// return a valid value to continue with condition evaluation test
return defaultValue();
}
//the real function evaluation which is used during run time
if(StringHelper.isLong(groupName)) {
try {
Long groupKey = Long.parseLong(groupName);
return getUserCourseEnv().isIdentityInCourseGroup(groupKey) ? ConditionInterpreter.INT_TRUE: ConditionInterpreter.INT_FALSE;
} catch (NumberFormatException e) {
log.error("" + groupName, e);
}
}
CourseGroupManager cgm = getUserCourseEnv().getCourseEnvironment().getCourseGroupManager();
List<Long> groupKeys = CoreSpringFactory.getImpl(BusinessGroupService.class).toGroupKeys(groupName, cgm.getCourseEntry());
if(!groupKeys.isEmpty()) {
Identity ident = getUserCourseEnv().getIdentityEnvironment().getIdentity();
return cgm.isIdentityInGroup(ident, groupKeys.get(0)) ? ConditionInterpreter.INT_TRUE: ConditionInterpreter.INT_FALSE;
}
return ConditionInterpreter.INT_FALSE;
}
@Override
protected Object defaultValue() {
return ConditionInterpreter.INT_TRUE;
}
}