001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.devutils.inspector;
018
019import org.apache.wicket.Session;
020import org.apache.wicket.core.util.lang.WicketObjects;
021import org.apache.wicket.model.IModel;
022import org.apache.wicket.util.lang.Bytes;
023
024/**
025 * Calculates
026 */
027public class SessionSizeModel implements IModel<Bytes>
028{
029        private static final long serialVersionUID = 1L;
030
031        /**
032         * Construct.
033         * 
034         */
035        public SessionSizeModel()
036        {
037        }
038
039        @Override
040        public Bytes getObject()
041        {
042                Bytes result = null;
043                if (Session.exists())
044                {
045                        long sizeOfSession = Session.get().getSizeInBytes();
046                        if (sizeOfSession > -1)
047                        {
048                                result = Bytes.bytes(sizeOfSession);
049                        }
050                }
051
052
053                return result;
054        }
055}