comparison: src/main/java/de/uapcore/lightpit/AbstractLightPITServlet.java
src/main/java/de/uapcore/lightpit/AbstractLightPITServlet.java
- changeset 47
- 57cfb94ab99f
- parent 45
- cc7f082c5ef3
- child 53
- 6a8498291606
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| 46:1574965c7dc7 | 47:57cfb94ab99f |
|---|---|
| 37 import javax.servlet.http.HttpServlet; | 37 import javax.servlet.http.HttpServlet; |
| 38 import javax.servlet.http.HttpServletRequest; | 38 import javax.servlet.http.HttpServletRequest; |
| 39 import javax.servlet.http.HttpServletResponse; | 39 import javax.servlet.http.HttpServletResponse; |
| 40 import javax.servlet.http.HttpSession; | 40 import javax.servlet.http.HttpSession; |
| 41 import java.io.IOException; | 41 import java.io.IOException; |
| 42 import java.lang.reflect.Constructor; | |
| 42 import java.lang.reflect.Method; | 43 import java.lang.reflect.Method; |
| 43 import java.lang.reflect.Modifier; | 44 import java.lang.reflect.Modifier; |
| 44 import java.sql.Connection; | 45 import java.sql.Connection; |
| 45 import java.sql.SQLException; | 46 import java.sql.SQLException; |
| 46 import java.util.*; | 47 import java.util.*; |
| 223 public void setDynamicFragment(HttpServletRequest req, String fragmentName) { | 224 public void setDynamicFragment(HttpServletRequest req, String fragmentName) { |
| 224 req.setAttribute(Constants.REQ_ATTR_FRAGMENT, Functions.dynFragmentPath(fragmentName)); | 225 req.setAttribute(Constants.REQ_ATTR_FRAGMENT, Functions.dynFragmentPath(fragmentName)); |
| 225 } | 226 } |
| 226 | 227 |
| 227 /** | 228 /** |
| 229 * @param req the servlet request object | |
| 230 * @param location the location where to redirect | |
| 231 * @see Constants#REQ_ATTR_REDIRECT_LOCATION | |
| 232 */ | |
| 233 public void setRedirectLocation(HttpServletRequest req, String location) { | |
| 234 if (location.startsWith("./")) { | |
| 235 location = location.replaceFirst("\\./", Functions.baseHref(req)); | |
| 236 } | |
| 237 req.setAttribute(Constants.REQ_ATTR_REDIRECT_LOCATION, location); | |
| 238 } | |
| 239 | |
| 240 /** | |
| 228 * Specifies the name of an additional stylesheet used by the module. | 241 * Specifies the name of an additional stylesheet used by the module. |
| 229 * <p> | 242 * <p> |
| 230 * Setting an additional stylesheet is optional, but quite common for HTML | 243 * Setting an additional stylesheet is optional, but quite common for HTML |
| 231 * output. | 244 * output. |
| 232 * <p> | 245 * <p> |
| 236 * @param req the servlet request object | 249 * @param req the servlet request object |
| 237 * @param stylesheet the name of the stylesheet | 250 * @param stylesheet the name of the stylesheet |
| 238 */ | 251 */ |
| 239 public void setStylesheet(HttpServletRequest req, String stylesheet) { | 252 public void setStylesheet(HttpServletRequest req, String stylesheet) { |
| 240 req.setAttribute(Constants.REQ_ATTR_STYLESHEET, Functions.enforceExt(stylesheet, ".css")); | 253 req.setAttribute(Constants.REQ_ATTR_STYLESHEET, Functions.enforceExt(stylesheet, ".css")); |
| 254 } | |
| 255 | |
| 256 /** | |
| 257 * Obtains a request parameter of the specified type. | |
| 258 * The specified type must have a single-argument constructor accepting a string to perform conversion. | |
| 259 * The constructor of the specified type may throw an exception on conversion failures. | |
| 260 * | |
| 261 * @param req the servlet request object | |
| 262 * @param clazz the class object of the expected type | |
| 263 * @param name the name of the parameter | |
| 264 * @param <T> the expected type | |
| 265 * @return the parameter value or an empty optional, if no parameter with the specified name was found | |
| 266 */ | |
| 267 public<T> Optional<T> getParameter(HttpServletRequest req, Class<T> clazz, String name) { | |
| 268 final String paramValue = req.getParameter(name); | |
| 269 if (paramValue == null) return Optional.empty(); | |
| 270 if (clazz.equals(String.class)) return Optional.of((T)paramValue); | |
| 271 try { | |
| 272 final Constructor<T> ctor = clazz.getConstructor(String.class); | |
| 273 return Optional.of(ctor.newInstance(paramValue)); | |
| 274 } catch (ReflectiveOperationException e) { | |
| 275 throw new RuntimeException(e); | |
| 276 } | |
| 277 | |
| 241 } | 278 } |
| 242 | 279 |
| 243 private void forwardToFullView(HttpServletRequest req, HttpServletResponse resp) | 280 private void forwardToFullView(HttpServletRequest req, HttpServletResponse resp) |
| 244 throws IOException, ServletException { | 281 throws IOException, ServletException { |
| 245 | 282 |
| 285 resp.setLocale(sessionLocale); | 322 resp.setLocale(sessionLocale); |
| 286 LOG.trace("Continuing session {} with language {}", session.getId(), sessionLocale); | 323 LOG.trace("Continuing session {} with language {}", session.getId(), sessionLocale); |
| 287 } | 324 } |
| 288 | 325 |
| 289 // set some internal request attributes | 326 // set some internal request attributes |
| 327 req.setAttribute(Constants.REQ_ATTR_BASE_HREF, Functions.baseHref(req)); | |
| 290 req.setAttribute(Constants.REQ_ATTR_PATH, Functions.fullPath(req)); | 328 req.setAttribute(Constants.REQ_ATTR_PATH, Functions.fullPath(req)); |
| 291 Optional.ofNullable(moduleInfo).ifPresent((proxy) -> req.setAttribute(Constants.REQ_ATTR_MODULE_INFO, proxy)); | 329 Optional.ofNullable(moduleInfo).ifPresent((proxy) -> req.setAttribute(Constants.REQ_ATTR_MODULE_INFO, proxy)); |
| 292 | 330 |
| 293 // obtain a connection and create the data access objects | 331 // obtain a connection and create the data access objects |
| 294 final var db = (DatabaseFacade) req.getServletContext().getAttribute(DatabaseFacade.SC_ATTR_NAME); | 332 final var db = (DatabaseFacade) req.getServletContext().getAttribute(DatabaseFacade.SC_ATTR_NAME); |
