Source Code Cross Referenced for HostedModeServletContextProxy.java in  » Ajax » GWT » com » google » gwt » dev » shell » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » GWT » com.google.gwt.dev.shell 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2007 Google Inc.
003:         * 
004:         * Licensed under the Apache License, Version 2.0 (the "License"); you may not
005:         * use this file except in compliance with the License. You may obtain a copy of
006:         * the License at
007:         * 
008:         * http://www.apache.org/licenses/LICENSE-2.0
009:         * 
010:         * Unless required by applicable law or agreed to in writing, software
011:         * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
012:         * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
013:         * License for the specific language governing permissions and limitations under
014:         * the License.
015:         */
016:        package com.google.gwt.dev.shell;
017:
018:        import com.google.gwt.dev.cfg.ModuleDef;
019:
020:        import java.io.File;
021:        import java.io.IOException;
022:        import java.io.InputStream;
023:        import java.net.MalformedURLException;
024:        import java.net.URL;
025:        import java.util.Enumeration;
026:        import java.util.Set;
027:
028:        import javax.servlet.RequestDispatcher;
029:        import javax.servlet.Servlet;
030:        import javax.servlet.ServletContext;
031:        import javax.servlet.ServletException;
032:
033:        /**
034:         * ServletContext proxy that implements the getResource and getResourceAsStream
035:         * members so that they can work with the {@link GWTShellServlet}.
036:         */
037:        class HostedModeServletContextProxy implements  ServletContext {
038:            private final ServletContext context;
039:            private final ModuleDef moduleDef;
040:            private final File outputDir;
041:
042:            HostedModeServletContextProxy(ServletContext context,
043:                    ModuleDef moduleDef, File outputDir) {
044:                this .context = context;
045:                this .moduleDef = moduleDef;
046:                this .outputDir = outputDir;
047:            }
048:
049:            /**
050:             * @param arg0
051:             * @return
052:             * @see javax.servlet.ServletContext#getAttribute(java.lang.String)
053:             */
054:            public Object getAttribute(String arg0) {
055:                return context.getAttribute(arg0);
056:            }
057:
058:            /**
059:             * @return
060:             * @see javax.servlet.ServletContext#getAttributeNames()
061:             */
062:            public Enumeration<String> getAttributeNames() {
063:                return context.getAttributeNames();
064:            }
065:
066:            /**
067:             * @param arg0
068:             * @return
069:             * @see javax.servlet.ServletContext#getContext(java.lang.String)
070:             */
071:            public ServletContext getContext(String arg0) {
072:                return context.getContext(arg0);
073:            }
074:
075:            /**
076:             * @param arg0
077:             * @return
078:             * @see javax.servlet.ServletContext#getInitParameter(java.lang.String)
079:             */
080:            public String getInitParameter(String arg0) {
081:                return context.getInitParameter(arg0);
082:            }
083:
084:            /**
085:             * @return
086:             * @see javax.servlet.ServletContext#getInitParameterNames()
087:             */
088:            public Enumeration<?> getInitParameterNames() {
089:                return context.getInitParameterNames();
090:            }
091:
092:            /**
093:             * @return
094:             * @see javax.servlet.ServletContext#getMajorVersion()
095:             */
096:            public int getMajorVersion() {
097:                return context.getMajorVersion();
098:            }
099:
100:            /**
101:             * @param arg0
102:             * @return
103:             * @see javax.servlet.ServletContext#getMimeType(java.lang.String)
104:             */
105:            public String getMimeType(String arg0) {
106:                return context.getMimeType(arg0);
107:            }
108:
109:            /**
110:             * @return
111:             * @see javax.servlet.ServletContext#getMinorVersion()
112:             */
113:            public int getMinorVersion() {
114:                return context.getMinorVersion();
115:            }
116:
117:            /**
118:             * @param arg0
119:             * @return
120:             * @see javax.servlet.ServletContext#getNamedDispatcher(java.lang.String)
121:             */
122:            public RequestDispatcher getNamedDispatcher(String arg0) {
123:                return context.getNamedDispatcher(arg0);
124:            }
125:
126:            /**
127:             * @param arg0
128:             * @return
129:             * @see javax.servlet.ServletContext#getRealPath(java.lang.String)
130:             */
131:            public String getRealPath(String arg0) {
132:                return context.getRealPath(arg0);
133:            }
134:
135:            /**
136:             * @param arg0
137:             * @return
138:             * @see javax.servlet.ServletContext#getRequestDispatcher(java.lang.String)
139:             */
140:            public RequestDispatcher getRequestDispatcher(String arg0) {
141:                return context.getRequestDispatcher(arg0);
142:            }
143:
144:            /**
145:             * @param arg0
146:             * @return
147:             * @throws MalformedURLException
148:             * @see javax.servlet.ServletContext#getResource(java.lang.String)
149:             */
150:            public URL getResource(String path) throws MalformedURLException {
151:                String moduleContext = "/" + moduleDef.getName() + "/";
152:                if (!path.startsWith(moduleContext)) {
153:                    // This path is in a different context; just return null
154:                    return null;
155:                }
156:
157:                // Try to get the resource from the application's public path
158:                URL url = moduleDef.findPublicFile(path.substring(moduleContext
159:                        .length()));
160:                if (url == null) {
161:                    // Otherwise try the path but rooted in the output directory
162:                    File requestedFile = new File(outputDir, path.substring(1));
163:                    if (requestedFile.exists()) {
164:                        url = requestedFile.toURI().toURL();
165:                    }
166:                }
167:
168:                return url;
169:            }
170:
171:            /**
172:             * @param arg0
173:             * @return
174:             * @see javax.servlet.ServletContext#getResourceAsStream(java.lang.String)
175:             */
176:            public InputStream getResourceAsStream(String arg0) {
177:                URL url;
178:                try {
179:                    url = getResource(arg0);
180:                    if (url != null) {
181:                        return url.openStream();
182:                    }
183:                } catch (MalformedURLException e) {
184:                    // Ignore the exception; return null
185:                } catch (IOException e) {
186:                    // Ignore the exception; return null
187:                }
188:
189:                return null;
190:            }
191:
192:            /**
193:             * 
194:             * @param path
195:             * @return
196:             * @see javax.servlet.ServletContext#getResourcePaths(java.lang.String)
197:             */
198:            public Set<String> getResourcePaths(String path) {
199:                return context.getResourcePaths(path);
200:            }
201:
202:            /**
203:             * @return
204:             * @see javax.servlet.ServletContext#getServerInfo()
205:             */
206:            public String getServerInfo() {
207:                return context.getServerInfo();
208:            }
209:
210:            /**
211:             * @param arg0
212:             * @return
213:             * @throws ServletException
214:             * @deprecated
215:             * @see javax.servlet.ServletContext#getServlet(java.lang.String)
216:             */
217:            @Deprecated
218:            public Servlet getServlet(String arg0) throws ServletException {
219:                return context.getServlet(arg0);
220:            }
221:
222:            /**
223:             * @return
224:             * @see javax.servlet.ServletContext#getServletContextName()
225:             */
226:            public String getServletContextName() {
227:                return context.getServletContextName();
228:            }
229:
230:            /**
231:             * @return
232:             * @deprecated
233:             * @see javax.servlet.ServletContext#getServletNames()
234:             */
235:            @Deprecated
236:            public Enumeration<String> getServletNames() {
237:                return context.getServletNames();
238:            }
239:
240:            /**
241:             * @return
242:             * @deprecated
243:             * @see javax.servlet.ServletContext#getServlets()
244:             */
245:            @Deprecated
246:            public Enumeration<Servlet> getServlets() {
247:                return context.getServlets();
248:            }
249:
250:            /**
251:             * @param arg0
252:             * @param arg1
253:             * @deprecated
254:             * @see javax.servlet.ServletContext#log(java.lang.Exception,
255:             *      java.lang.String)
256:             */
257:            @Deprecated
258:            public void log(Exception arg0, String arg1) {
259:                context.log(arg0, arg1);
260:            }
261:
262:            /**
263:             * @param arg0
264:             * @see javax.servlet.ServletContext#log(java.lang.String)
265:             */
266:            public void log(String arg0) {
267:                context.log(arg0);
268:            }
269:
270:            /**
271:             * @param arg0
272:             * @param arg1
273:             * @see javax.servlet.ServletContext#log(java.lang.String,java.lang.Throwable)
274:             */
275:            public void log(String arg0, Throwable arg1) {
276:                context.log(arg0, arg1);
277:            }
278:
279:            /**
280:             * @param arg0
281:             * @see javax.servlet.ServletContext#removeAttribute(java.lang.String)
282:             */
283:            public void removeAttribute(String arg0) {
284:                context.removeAttribute(arg0);
285:            }
286:
287:            /**
288:             * @param arg0
289:             * @param arg1
290:             * @see javax.servlet.ServletContext#setAttribute(java.lang.String,java.lang.Object)
291:             */
292:            public void setAttribute(String arg0, Object arg1) {
293:                context.setAttribute(arg0, arg1);
294:            }
295:        }
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