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; 018 019 020import org.apache.wicket.util.io.IClusterable; 021 022/** 023 * Unique identifier of a page instance 024 * 025 * @author igor.vaynberg 026 */ 027public class PageReference implements IClusterable 028{ 029 private static final long serialVersionUID = 1L; 030 031 private final int pageId; 032 033 /** 034 * Constructor 035 * 036 * @param pageId 037 */ 038 public PageReference(int pageId) 039 { 040 this.pageId = pageId; 041 } 042 043 /** 044 * @return The page that the this PageReference references 045 */ 046 public Page getPage() 047 { 048 return (Page)Session.get().getPageManager().getPage(pageId); 049 } 050 051 /** 052 * Gets pageId. 053 * 054 * @return pageId 055 */ 056 public int getPageId() 057 { 058 return pageId; 059 } 060 061 062 /** 063 * @see java.lang.Object#hashCode() 064 */ 065 @Override 066 public int hashCode() 067 { 068 return pageId; 069 } 070 071 /** 072 * @see java.lang.Object#equals(java.lang.Object) 073 */ 074 @Override 075 public boolean equals(Object obj) 076 { 077 if (this == obj) 078 { 079 return true; 080 } 081 if (obj == null) 082 { 083 return false; 084 } 085 if (getClass() != obj.getClass()) 086 { 087 return false; 088 } 089 PageReference other = (PageReference)obj; 090 return getPageId() == other.getPageId(); 091 } 092 093 094}