3 import org.ibex.util.*;
8 import javax.servlet.*;
9 import javax.servlet.http.*;
10 import com.thoughtworks.xstream.*;
11 import org.prevayler.*;
12 import org.prevayler.implementation.snapshot.*;
14 public class Servlet extends HttpServlet {
16 private ServletScope servletscope = null;
18 private Prevayler prevayler;
20 private ServletContext cx = null;
22 public void destroy() { try {
23 synchronized(this.getClass()) {
24 Prevayler privatePrevayler = prevayler;
25 if (prevayler == null) return;
27 Prevalence.destroy(cx, prevayler);
29 } catch (Exception e) { e.printStackTrace(); } }
31 public void init(ServletConfig sc) throws ServletException {
32 cx = sc.getServletContext();
33 prevayler = Prevalence.getPrevayler(cx);
36 public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException { doGet(request, response); }
37 public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
38 servletscope = new ServletScope(request, response, cx);
39 path = cx.getRealPath(((HttpServletRequest)request).getServletPath());
40 Reader xmlreader = new InputStreamReader(new FileInputStream(path));
41 new Template(servletscope, new JSScope(servletscope), xmlreader).wrap(null).toXML(response.getWriter());
44 public class ServletScope extends JSScope {
45 HttpServletRequest request;
46 HttpServletResponse response;
48 public String getRealPath(String s) { return cx.getRealPath(s); }
49 public ServletScope(ServletRequest request, ServletResponse response, ServletContext cx) {
51 this.request = (HttpServletRequest)request;
52 this.response = (HttpServletResponse)response;
55 private JS params = new JS() {
56 public Object get(Object key) { return request.getParameter(JS.toString(key)); }
57 public Enumeration keys() { return request.getParameterNames(); }
59 private JS cookies = new JS() {
61 public Object get(Object key) { return request.getCookie(JS.toString(key)); }
62 public Enumeration keys() { return request.getCookieNames(); }
65 private JS sessionAttributes = new JS() {
66 public Object get(Object key) { return request.getSession(true).getAttribute(JS.toString(key)); }
67 public void put(Object key, Object val) {
68 if (val == null) request.getSession(true).removeAttribute(JS.toString(key));
69 else request.setAttribute(JS.toString(key), val); }
70 public Enumeration keys() { return request.getSession(true).getAttributeNames(); }
72 private JS requestHeader = new JS() {
73 public Object get(Object key) { return request.getHeader(JS.toString(key)); }
74 public Enumeration keys() { return request.getHeaderNames(); }
76 private JS responseHeader = new JS() {
77 public void put(Object key, Object val) { response.setHeader(JS.toString(key), JS.toString(val)); }
81 /** lets us put multi-level get/put/call keys all in the same method */
82 private class Sub extends JS {
84 Sub(Object key) { this.key = key; }
85 public void put(Object key, Object val) throws JSExn {
86 ServletScope.this.put(JS.toString(this.key) + "." + JS.toString(key), val); }
87 public Object get(Object key) throws JSExn {
88 return ServletScope.this.get(JS.toString(this.key) + "." + JS.toString(key)); }
89 public Object call(Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
90 return ServletScope.this.callMethod(this.key, a0, a1, a2, rest, nargs);
92 public Object callMethod(Object method, Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
93 return ServletScope.this.callMethod(JS.toString(this.key) + "."
94 + JS.toString(method), a0, a1, a2, rest, nargs);
97 private Sub getSub(String key) { return new Sub(key); }
99 public Object callMethod(Object method, final Object a, final Object b, Object c, Object[] rest, int nargs) throws JSExn {
101 case "prevalent.query":
103 return prevayler.execute(new Prevalence.JSQuery(JS.cloneWithNewParentScope((JS)a, null)));
104 } catch (Exception e) {
106 throw new RuntimeException(e); }
108 case "session.invalidate": request.getSession(true).invalidate(); return null;
110 String path = JS.toString(a);
111 if (path.indexOf("..") != -1) throw new JSExn("cannot use .. in paths");
112 File f = new File(cx.getRealPath("/") + File.separatorChar + path);
113 if (!f.isDirectory()) return null;
114 String[] contents = f.list();
115 JSArray ret = new JSArray(contents.length);
116 for(int i=0; i<contents.length; i++) ret.addElement(contents[i]);
121 public Object get(Object key) throws JSExn {
124 case "arg": return null;
125 case "prevalent": return prevalent;
126 case "request": return getSub("request");
127 case "request.user": return request.getRemoteUser();
128 case "request.header": return requestHeader;
129 case "request.method": return request.getMethod();
130 case "request.remote": return getSub("request.remote");
131 case "request.remote.ip": return request.getRemoteAddr();
132 case "request.remote.host": return request.getRemoteHost();
133 case "request.ssl": return request.isSecure();
134 case "request.path": return request.getPathInfo();
135 case "response": return getSub("response");
136 case "response.header": return responseHeader;
137 case "session": return getSub("session");
138 case "session.attr": return sessionAttributes;
139 case "session.created": return new JSDate(request.getSession(true).getCreationTime());
140 case "session.accessed": return new JSDate(request.getSession(true).getLastAccessedTime());
141 case "session.invalidate": return METHOD;
142 case "page": return getSub("page");
143 case "page.lastmodified": return new JSDate(new File(path).lastModified());
144 case "context": return getSub("context");
145 case "context.list": return METHOD;
146 case "params": return params;
147 case "cookie": return cookies;
151 public void put(Object key, Object val) throws JSExn {
153 //#switch(JS.toString(key))
154 case "response.code": response.setStatus(JS.toInt(val));
155 case "response.redirect": response.sendRedirect(JS.toString(val));
156 case "response.contentType": response.setContentType(JS.toString(val));
158 try { prevayler.execute(new Prevalence.JSTransaction(JS.cloneWithNewParentScope((JS)val, null)));
159 } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); }
161 } catch (IOException e) {