/**
* 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) 1999-2006 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <p>
*/
package org.olat.course.statistic.aggregation;
import java.util.Calendar;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import org.olat.core.commons.persistence.DBFactory;
import org.olat.core.commons.persistence.DBQuery;
import org.olat.core.logging.activity.LogModule;
import org.olat.core.logging.activity.LoggingObject;
import org.olat.course.condition.ExtendedCondition;
import org.olat.course.condition.operators.Operator;
import org.olat.course.nodes.CourseNodeFactory;
/**
*
* Description:<br>
* The class provides a simple node aggregation.
*
* <P>
* Initial Date: 10.12.2009 <br>
* @author bja
*/
public class SimpleNodeAggregation implements IAggregation {
private Long resId;
private int aggregation = 0;
private Date begin;
private Date end;
private List<ExtendedCondition> conditions;
private boolean hasANDConnection;
/**
* @param resId
* @param begin
* @param end
* @param conditions
* @param hasANDConnection
*/
public SimpleNodeAggregation(Long resId, Date begin, Date end, List<ExtendedCondition> conditions, boolean hasANDConnection) {
this.resId = resId;
this.begin = begin;
this.end = end;
this.conditions = conditions;
this.hasANDConnection = hasANDConnection;
calculate();
}
private void calculate() {
// get all LoggingObjects which have a target or parent resource from type CourseNode
List loggingObjects = executeAggregation();
// get registered node aliases like fo, den, st, and so on
List<String> courseNodeAliases = CourseNodeFactory.getInstance().getRegisteredCourseNodeAliases();
// count all LoggingObjects which have not a course node resourceable type two times
int count = 0;
for (Object o : loggingObjects) {
LoggingObject loggingObject = (LoggingObject) o;
if(!(courseNodeAliases.contains(loggingObject.getTargetResType()) && courseNodeAliases.contains(loggingObject.getParentResType()))) {
count++;
}
}
setAggregation(count);
}
private List executeAggregation() {
String query = "select v from org.olat.core.logging.activity.LoggingObject v "
+ "where (v.resourceAdminAction = :resAdminAction) "
+ "AND ((v.targetResId = :resId) OR (v.parentResId = :resId)) ";
// date
if (begin != null) {
query = query.concat(" AND (v.creationDate >= :createdAfter)");
}
if (end != null) {
query = query.concat(" AND (v.creationDate < :createdBefore)");
}
// conditions
String[] values = new String[conditions.size()];
if(conditions.size() > 0) {
query = query.concat(" AND (");
boolean firstIteration = true;
int i = 0;
for(Iterator<ExtendedCondition> iterator = conditions.iterator(); iterator.hasNext();) {
ExtendedCondition extendedCondition = iterator.next();
String attribute = extendedCondition.getAttribute();
int position = LogModule.getUserPropertyPosition(attribute);
Operator operator = extendedCondition.getOperator();
String value = extendedCondition.getValue();
// Is position equal to 0 then the list userProperties doesn't contain the value of attribute.
if (position > 0 && operator.buildSQLStatement(attribute, value).length() > 0) {
values[i] = value;
String connection = "";
if(!firstIteration) {
connection = " " + (hasANDConnection?"AND":"OR") + " ";
}
query = query.concat(connection + operator.buildSQLStatement("v.userProperty"+position, ":value"+i));
i++;
}
if (firstIteration) firstIteration = false;
}
query = query.concat(")");
}
DBQuery dbQuery = DBFactory.getInstance().createQuery(query);
dbQuery.setBoolean("resAdminAction", false);
dbQuery.setString("resId", Long.toString(resId));
if (begin != null) {
dbQuery.setDate("createdAfter", begin);
}
if (end != null) {
Calendar cal = Calendar.getInstance();
cal.setTime(end);
cal.add(Calendar.DAY_OF_MONTH, 1);
end = cal.getTime();
dbQuery.setDate("createdBefore", end);
}
if(values.length > 0) {
int i = 0;
for (String value : values) {
dbQuery.setString("value"+i, value);
i++;
}
}
return dbQuery.list();
}
private void setAggregation(int a) {
this.aggregation = a;
}
@Override
public int getAggregation() {
return this.aggregation;
}
}