// TODO: replace with ReflectiveCache implementation.
public static Object construct(Class clazz) {
try {
return clazz.newInstance();
} catch (Throwable t) {
throw UniversalRuntimeException.accumulate(
t, "Could not create instance of " + clazz + " using default constructor");
}
}
private boolean handleHelperDone() {
Logger.log.info("Done handling helper in view: " + viewParameters.viewID);
// Removing hack
tsh.clearTokenState(IN_HELPER_INDICATOR);
ELReference elref =
(ELReference)
tsh.getTokenState(
TOKEN_STATE_PREFIX
+ viewParameters.viewID
+ HelperViewParameters.POST_HELPER_BINDING);
ParameterList paramlist =
(ParameterList)
tsh.getTokenState(
TOKEN_STATE_PREFIX + viewParameters.viewID + POST_HELPER_BINDING_PARAMLIST);
statePreservationManager.scopeRestore();
if (paramlist != null) {
for (int i = 0; i < paramlist.size(); i++) {
UIParameter param = (UIParameter) paramlist.get(i);
if (param instanceof UIELBinding) {
bma.setBeanValue(
((UIELBinding) param).valuebinding.value,
beanLocator,
((UIELBinding) param).rvalue,
null,
false);
}
}
}
String methodBinding = elref == null ? null : elref.value;
Object beanReturn = null;
if (methodBinding != null) {
ShellInfo shells = bma.fetchShells(methodBinding, beanLocator, true);
beanReturn = bma.invokeBeanMethod(shells, null);
}
ViewParameters originParams =
(ViewParameters)
tsh.getTokenState(
TOKEN_STATE_PREFIX + viewParameters.viewID + POST_HELPER_ARI2_VIEWPARAMS);
ARIResult ariresult = ari.interpretActionResult(viewParameters, beanReturn);
ariprocessor.interceptActionResult(ariresult, originParams, ariresult);
String urlToRedirectTo = ViewParamUtil.getAnyFullURL(ariresult.resultingView, vsh);
try {
response.sendRedirect(urlToRedirectTo);
} catch (IOException e) {
throw UniversalRuntimeException.accumulate(e, "Error redirecting to url: " + urlToRedirectTo);
}
return true;
}
private boolean handleHelperStart() {
Logger.log.info("Handling helper start in view: " + viewParameters.viewID);
View view = new View();
List producersList = viewResolver.getProducers(viewParameters.viewID);
if (producersList.size() != 1) {
throw new IllegalArgumentException(
"There is not exactly one view producer for the view: " + viewParameters.viewID);
}
ViewComponentProducer vp = (ViewComponentProducer) producersList.get(0);
statePreservationManager.scopeRestore();
vp.fillComponents(view.viewroot, viewParameters, null);
statePreservationManager.scopePreserve();
UIOutput helperId = (UIOutput) view.viewroot.getComponent(HelperViewParameters.HELPER_ID);
UICommand helperBinding =
(UICommand) view.viewroot.getComponent(HelperViewParameters.POST_HELPER_BINDING);
tsh.putTokenState(
TOKEN_STATE_PREFIX + viewParameters.viewID + HelperViewParameters.HELPER_ID,
helperId.getValue());
if (helperBinding != null) {
tsh.putTokenState(
TOKEN_STATE_PREFIX + viewParameters.viewID + HelperViewParameters.POST_HELPER_BINDING,
helperBinding.methodbinding);
// Support for a ParameterList on the UICommand
if (helperBinding.parameters != null) {
tsh.putTokenState(
TOKEN_STATE_PREFIX + viewParameters.viewID + POST_HELPER_BINDING_PARAMLIST,
helperBinding.parameters);
}
}
// We need to save these ViewParameters for ActionResultInterceptors
tsh.putTokenState(
TOKEN_STATE_PREFIX + viewParameters.viewID + POST_HELPER_ARI2_VIEWPARAMS, viewParameters);
// Hack to know if we're in the helper
tsh.putTokenState(IN_HELPER_INDICATOR, IN_HELPER_INDICATOR);
String helperToolPath = bup.getBaseURL() + viewParameters.viewID + IN_HELPER_PATH;
tsh.putTokenState(
helperId.getValue() + Tool.HELPER_DONE_URL,
bup.getBaseURL() + viewParameters.viewID + HELPER_FINISHED_PATH);
try {
response.sendRedirect(helperToolPath);
} catch (IOException e) {
throw UniversalRuntimeException.accumulate(
e, "IOException when trying to redirect to helper tool");
}
return true;
}
/**
* Copies text from input to output, converting newlines into XHTML <br/> elements. The
* supplied streams WILL be closed!
*/
public void copyReader(Reader r, PrintOutputStream pos) {
BufferedReader br = new BufferedReader(r);
XMLWriter xmlw = new XMLWriter(pos);
try {
while (true) {
String line = br.readLine();
if (line == null) break;
xmlw.write(line);
// TODO: make some kind of "XMLFilterWriter" architecture if necessary
// writeEncodeLinks(xmlw, line);
xmlw.writeRaw("<br/>");
}
} catch (Throwable t) {
throw UniversalRuntimeException.accumulate(t, "Error rendering text as HTML");
} finally {
StreamCloseUtil.closeReader(r);
pos.close();
}
}
public boolean handle() {
ZipViewParams zvp;
if (viewparams instanceof ZipViewParams) {
zvp = (ZipViewParams) viewparams;
} else {
return false;
}
log.debug("Handling zip");
OutputStream resultsOutputStream = null;
try {
resultsOutputStream = response.getOutputStream();
} catch (IOException ioe) {
throw UniversalRuntimeException.accumulate(
ioe, "Unable to get response stream for Download All Zip");
}
Assignment2 assignment = assignmentLogic.getAssignmentById(zvp.assignmentId);
String siteTitle = externalLogic.getSiteTitle(assignment.getContextId());
String zipFolderName = assignment.getTitle() + "-" + siteTitle;
zipFolderName = zipExporter.escapeZipEntry(zipFolderName, "_");
response.setHeader("Content-disposition", "inline; filename=" + zipFolderName + ".zip");
response.setContentType("application/zip");
zipExporter.getSubmissionsZip(resultsOutputStream, zvp.assignmentId);
if (resultsOutputStream != null) {
try {
resultsOutputStream.close();
} catch (IOException e) {
log.warn("IOException attempting to close resultsOutputStream while downloading zip file");
}
}
return true;
}
public AnyViewParameters handleException(Exception e, ViewParameters viewparams) {
if (viewParametersPredicate.accept(viewparams)) {
try {
if (e instanceof SecurityException || e instanceof PermissionException) {
Logger.log.info("Sending HTTP status 401 for exception ", e);
httpServletResponse.sendError(401, e.getLocalizedMessage());
} else {
Logger.log.info("Sending HTTP status 500 for exception ", e);
httpServletResponse.sendError(500, e.getLocalizedMessage());
}
try { // Jetty will refuse to allow access to Writer after sendError
e.printStackTrace(httpServletResponse.getWriter());
} catch (IllegalStateException e3) {
e.printStackTrace(new PrintStream(httpServletResponse.getOutputStream()));
}
} catch (Exception e2) {
throw UniversalRuntimeException.accumulate(e2, "Error setting HTTP response code");
}
NoViewParameters togo = new NoViewParameters();
togo.errorredirect = "1";
return togo;
}
return null;
}
private boolean handleHelperHelper(final String pathBeyondViewID) {
Logger.log.info(
"Handling helper in view: "
+ viewParameters.viewID
+ " pathBeyondViewID: "
+ pathBeyondViewID);
String helperId =
(String)
tsh.getTokenState(
TOKEN_STATE_PREFIX + viewParameters.viewID + HelperViewParameters.HELPER_ID);
if (pathBeyondViewID.endsWith(".helper")) {
int i = pathBeyondViewID.lastIndexOf('/');
if (i >= 0) {
String helperName = pathBeyondViewID.substring(i + 1);
String toolName = pathBeyondViewID.substring(0, i);
i = helperName.lastIndexOf('.');
helperName = helperName.substring(0, i);
Logger.log.debug("new helper name" + helperName);
Logger.log.debug("tool name" + toolName);
tsh.putTokenState(TOKEN_STATE_PREFIX + viewParameters.viewID + "orig-helper-id", helperId);
tsh.putTokenState(
TOKEN_STATE_PREFIX + viewParameters.viewID + "helper-tool-name", toolName);
helperId = helperName;
tsh.putTokenState(
TOKEN_STATE_PREFIX + viewParameters.viewID + HelperViewParameters.HELPER_ID, helperId);
}
}
String origToolName =
(String) tsh.getTokenState(TOKEN_STATE_PREFIX + viewParameters.viewID + "helper-tool-name");
if (origToolName != null && pathBeyondViewID.endsWith(origToolName)) {
helperId =
(String) tsh.getTokenState(TOKEN_STATE_PREFIX + viewParameters.viewID + "orig-helper-id");
Logger.log.debug("returning to " + helperId);
tsh.putTokenState(
TOKEN_STATE_PREFIX + viewParameters.viewID + HelperViewParameters.HELPER_ID, helperId);
tsh.clearTokenState(TOKEN_STATE_PREFIX + viewParameters.viewID + "helper-tool-name");
tsh.clearTokenState(TOKEN_STATE_PREFIX + viewParameters.viewID + "orig-helper-id");
}
ActiveTool helperTool = activeToolManager.getActiveTool(helperId);
String baseUrl = bup.getBaseURL();
int hostStart = baseUrl.indexOf("://") + 3;
int hostEnd = baseUrl.indexOf('/', hostStart);
String contextPath = baseUrl.substring(hostEnd);
contextPath += viewParameters.viewID;
contextPath += IN_HELPER_PATH;
String helperPathInfo = pathInfo[0] + "/" + pathInfo[1];
request.removeAttribute(Tool.NATIVE_URL);
// this is the forward call
try {
helperTool.help(request, response, contextPath, helperPathInfo);
} catch (ToolException e) {
throw UniversalRuntimeException.accumulate(
e,
"ToolException when trying to call help. HelperId: "
+ helperId
+ " contextPath: "
+ contextPath
+ " pathInfo: "
+ pathInfo);
}
return true;
}
// This method is almost entirely dialect-invariant - awaiting final
// factorisation of RenderSystem
public int renderComponent(
RenderSystemContext rsc, UIContainer context, UIComponent torendero, XMLLump lump) {
int lumpindex = lump.lumpindex;
XMLLump[] lumps = lump.parent.lumps;
int nextpos = -1;
XMLLump outerendopen = lump.open_end;
XMLLump outerclose = lump.close_tag;
nextpos = outerclose.lumpindex + 1;
XMLLumpList payloadlist =
lump.downmap == null ? null : lump.downmap.headsForID(XMLLump.PAYLOAD_COMPONENT);
XMLLump payload = payloadlist == null ? null : payloadlist.lumpAt(0);
boolean iselide = lump.rsfID.startsWith(XMLLump.ELISION_PREFIX);
XMLLump endopen = outerendopen;
XMLLump close = outerclose;
XMLLump uselump = lump;
HashMap attrcopy = new HashMap();
attrcopy.putAll((payload == null ? uselump : payload).attributemap);
attrcopy.remove(XMLLump.ID_ATTRIBUTE);
TagRenderContext rendercontext =
new TagRenderContext(
attrcopy, uselump, endopen, close, rsc.pos, rsc.xmlw, nextpos, iselide);
idRelationRewriter.rewrite(rsc.idrewritemap, rendercontext, context);
// if there is no peer component, it might still be a static resource holder
// that needs URLs rewriting.
// we assume there is no payload component here, since there is no producer
// ID that might govern selection. So we use "outer" indices.
if (torendero == null) {
if (lump.rsfID.indexOf(XMLLump.SCR_PREFIX) == (iselide ? 1 : 0)) {
String scrname = lump.rsfID.substring(XMLLump.SCR_PREFIX.length() + (iselide ? 1 : 0));
StaticComponentRenderer scr = scrc.getSCR(scrname);
if (scr == null) {
Logger.log.info(
"Warning: unrecognised static component renderer reference with key "
+ scrname
+ " at lump "
+ lump.toString());
scr = NullRewriteSCR.instance;
}
int tagtype = RenderUtil.renderSCR(scr, rsc.collecteds, rendercontext);
nextpos =
tagtype == ComponentRenderer.LEAF_TAG
? outerclose.lumpindex + 1
: outerendopen.lumpindex + 1;
} else {
if (rsc.debugrender) {
renderDebugMessage(
rsc,
"Leaf component missing which was expected with template id "
+ lump.rsfID
+ " at "
+ lump.toString());
}
}
} else {
// else there IS a component and we are going to render it. First make
// sure we render any preamble.
if (payload != null) {
rendercontext.endopen = payload.open_end;
rendercontext.close = payload.close_tag;
rendercontext.uselump = payload;
RenderUtil.dumpTillLump(lumps, lumpindex, payload.lumpindex, rsc.pos);
lumpindex = payload.lumpindex;
}
rsc.IDassigner.adjustForID(attrcopy, torendero);
decoratormanager.decorate(torendero.decorators, uselump.getTag(), attrcopy);
// ALWAYS dump the tag name, this can never be rewritten. (probably?!)
rendercontext.openTag();
if (torendero instanceof UIBasicListMember) {
torendero = RenderUtil.resolveListMember(rsc.view, (UIBasicListMember) torendero);
}
try {
componentRenderer.renderComponent(torendero, rsc.view, rendercontext);
} catch (Exception e) {
throw UniversalRuntimeException.accumulate(
e,
"Error rendering component "
+ torendero.getClass()
+ " with full ID "
+ torendero.getFullID()
+ " at template location "
+ rendercontext.uselump);
}
// if there is a payload, dump the postamble.
if (payload != null) {
// the default case is initialised to tag close
if (rendercontext.nextpos == nextpos) {
RenderUtil.dumpTillLump(
lumps, rendercontext.close.lumpindex + 1, outerclose.lumpindex + 1, rsc.pos);
}
}
nextpos = rendercontext.nextpos;
}
return nextpos;
}
