|
1
24 package org.riotfamily.pages.mapping;
25
26 import java.io.IOException  ;
27 import java.util.Collection ;
28 import java.util.Iterator ;
29
30 import javax.servlet.ServletException ;
31 import javax.servlet.http.HttpServletRequest ;
32 import javax.servlet.http.HttpServletResponse ;
33
34 import org.riotfamily.common.web.filter.FilterPlugin;
35 import org.riotfamily.common.web.filter.PluginChain;
36 import org.riotfamily.pages.Page;
37 import org.riotfamily.pages.PageLocation;
38 import org.riotfamily.pages.Site;
39 import org.riotfamily.pages.dao.PageDao;
40 import org.riotfamily.riot.security.AccessController;
41 import org.springframework.transaction.PlatformTransactionManager;
42 import org.springframework.transaction.TransactionDefinition;
43 import org.springframework.transaction.TransactionStatus;
44 import org.springframework.transaction.support.DefaultTransactionDefinition;
45
46
58 public class FolderFilterPlugin extends FilterPlugin {
59
60 private static final TransactionDefinition TX_DEF =
61 new DefaultTransactionDefinition();
62
63 private PageDao pageDao;
64
65 private PageLocationResolver locationResolver;
66
67 private PlatformTransactionManager tx;
68
69
70 public FolderFilterPlugin(PageDao pageDao,
71 PageLocationResolver locationResolver,
72 PlatformTransactionManager tx) {
73
74 this.pageDao = pageDao;
75 this.locationResolver = locationResolver;
76 this.tx = tx;
77 }
78
79 public void doFilter(HttpServletRequest request,
80 HttpServletResponse response, PluginChain pluginChain)
81 throws IOException , ServletException {
82
83 boolean requestHandled = false;
84 String uri = request.getRequestURI();
85 if (uri.lastIndexOf('.') < uri.lastIndexOf('/')) {
86 TransactionStatus status = tx.getTransaction(TX_DEF);
87 try {
88 Collection indexPages = getIndexPages(request);
89 if (indexPages != null) {
90 requestHandled = true;
91 sendRedirect(indexPages, request, response);
92 }
93 }
94 catch (Exception ex) {
95 tx.rollback(status);
96 throw new ServletException (ex);
97 }
98 tx.commit(status);
99 }
100 if (!requestHandled) {
101 pluginChain.doFilter(request, response);
102 }
103 }
104
105 private boolean isRequestable(Page page) {
106 return page.isEnabled() || AccessController.isAuthenticatedUser();
107 }
108
109 private Collection getIndexPages(HttpServletRequest request) {
110 Collection childPages = null;
111 PageLocation location = locationResolver.getPageLocation(request);
112 if (location != null) {
113 if ("/".equals(location.getPath())) {
114 Site site = pageDao.getSite(location.getSiteName());
115 childPages = pageDao.findRootNode(site).getChildPages(location.getLocale());
116 }
117 else {
118 Page page = pageDao.findPage(location);
119 if (page != null && page.isFolder()) {
120 childPages = page.getChildPages();
121 }
122 }
123 }
124 return childPages;
125 }
126
127 private void sendRedirect(Collection pages, HttpServletRequest request,
128 HttpServletResponse response) throws IOException {
129
130 String url = getFirstRequestableChildPageUrl(pages);
131 if (url != null) {
132 response.sendRedirect(response.encodeRedirectURL(
133 request.getContextPath() + url));
134 }
135 else {
136 response.sendError(HttpServletResponse.SC_NOT_FOUND);
137 }
138 }
139
140 private String getFirstRequestableChildPageUrl(Collection pages) {
141 Iterator it = pages.iterator();
142 while (it.hasNext()) {
143 Page page = (Page) it.next();
144 if (isRequestable(page)) {
145 return locationResolver.getUrl(page);
146 }
147 }
148 return null;
149 }
150 }
151 |
Popular Tags |
Java API By Example, From Geeks To Geeks.