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1
28
29 package com.caucho.server.dispatch;
30
31 import com.caucho.config.ConfigException;
32 import com.caucho.jsp.Page;
33 import com.caucho.jsp.QServlet;
34 import com.caucho.make.AlwaysModified;
35 import com.caucho.util.L10N;
36 import com.caucho.util.Log;
37
38 import javax.servlet.FilterChain  ;
39 import javax.servlet.ServletContext ;
40 import javax.servlet.ServletException ;
41 import javax.servlet.ServletRequest ;
42 import javax.servlet.ServletResponse ;
43 import javax.servlet.http.HttpServletRequest ;
44 import javax.servlet.http.HttpServletResponse ;
45 import java.io.IOException ;
46 import java.io.PrintWriter ;
47 import java.util.logging.Level ;
48 import java.util.logging.Logger ;
49
50
53 public class PrecompilePageFilterChain implements FilterChain {
54 private static final Logger log = Log.open(PageFilterChain.class);
55 private static final L10N L = new L10N(PageFilterChain.class);
56
57 private QServlet _servlet;
58 private ServletContext _servletContext;
59
60
65 PrecompilePageFilterChain(QServlet servlet)
66 {
67 _servlet = servlet;
68 }
69
70 static FilterChain create(ServletInvocation invocation,
71 PageFilterChain pageChain)
72 {
73 String query = invocation.getQueryString();
74
75 if (query == null)
76 return pageChain;
77
78 int p = query.indexOf("jsp_precompile");
79
80 if (p < 0)
81 return pageChain;
82
83 String tail = query.substring(p + "jsp_precompile".length());
84
85 if (tail.startsWith("=\"true\"") ||
86 tail.startsWith("=true") ||
87 ! tail.startsWith("=")) {
88 if (invocation instanceof Invocation) {
89 Invocation inv = (Invocation) invocation;
90
91 inv.setDependency(AlwaysModified.create());
92 }
93
94 return new PrecompilePageFilterChain(pageChain.getServlet());
95 }
96 else if (tail.startsWith("=\"false\"") ||
97 tail.startsWith("=false")) {
98 return pageChain;
100 }
101 else
102 return new ExceptionFilterChain(new ConfigException("jsp_precompile requires a true or false value at '" + tail + "'."));
103 }
104
105
108 public void setServletContext(ServletContext servletContext)
109 {
110 _servletContext = servletContext;
111 }
112
113
116 public ServletContext getServletContext()
117 {
118 return _servletContext;
119 }
120
121
127 public void doFilter(ServletRequest request, ServletResponse response)
128 throws ServletException , IOException
129 {
130 HttpServletRequest req = (HttpServletRequest ) request;
131 HttpServletResponse res = (HttpServletResponse ) response;
132
133 try {
134 Page page = _servlet.getPage(req, res);
135
136 if (page == null) {
137 res.sendError(res.SC_NOT_FOUND);
138 return;
139 }
140 } catch (Exception e) {
141 log.log(Level.FINER, e.toString(), e);
142
143 throw new ServletException (e);
144 }
145
146 PrintWriter out = res.getWriter();
147 out.println("Precompiled page.");
148 }
149 }
150 |
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