private Stage2CacheableState readStaticState(
PipelineContext pipelineContext,
ExternalContext externalContext,
IndentedLogger indentedLogger,
XFormsStaticState[] staticState) {
final StaticStateBits staticStateBits =
new StaticStateBits(pipelineContext, externalContext, indentedLogger, null);
{
final XFormsStaticState cachedState =
XFormsStaticStateCache.instance()
.getDocument(pipelineContext, staticStateBits.staticStateDigest);
if (cachedState != null && cachedState.getMetadata().checkBindingsIncludes()) {
// Found static state in cache
indentedLogger.logDebug("", "found up-to-date static state by digest in cache");
staticState[0] = cachedState;
} else {
// Not found static state in cache OR it is out of date, create and initialize static state
// object
// NOTE: In out of date case, could clone static state and reprocess instead?
if (cachedState != null)
indentedLogger.logDebug("", "found out-of-date static state by digest in cache");
else indentedLogger.logDebug("", "did not find static state by digest in cache");
staticState[0] =
new XFormsStaticState(
pipelineContext,
staticStateBits.staticStateDocument,
staticStateBits.staticStateDigest,
staticStateBits.metadata);
// Store in cache
XFormsStaticStateCache.instance().storeDocument(pipelineContext, staticState[0]);
}
}
// Update input dependencies object
return new Stage2CacheableState(
staticStateBits.annotatedTemplate, staticStateBits.staticStateDigest);
}
public static void outputResponseDocument(
final PipelineContext pipelineContext,
final ExternalContext externalContext,
final IndentedLogger indentedLogger,
final SAXStore annotatedDocument,
final XFormsContainingDocument containingDocument,
final XMLReceiver xmlReceiver)
throws SAXException, IOException {
final List<XFormsContainingDocument.Load> loads = containingDocument.getLoadsToRun();
if (containingDocument.isGotSubmissionReplaceAll()) {
// 1. Got a submission with replace="all"
// NOP: Response already sent out by a submission
// TODO: modify XFormsModelSubmission accordingly
indentedLogger.logDebug("", "handling response for submission with replace=\"all\"");
} else if (loads != null && loads.size() > 0) {
// 2. Got at least one xforms:load
// Send redirect out
// Get first load only
final XFormsContainingDocument.Load load = loads.get(0);
// Send redirect
final String redirectResource = load.getResource();
indentedLogger.logDebug(
"", "handling redirect response for xforms:load", "url", redirectResource);
// Set isNoRewrite to true, because the resource is either a relative path or already contains
// the servlet context
externalContext.getResponse().sendRedirect(redirectResource, null, false, false, true);
// Still send out a null document to signal that no further processing must take place
XMLUtils.streamNullDocument(xmlReceiver);
} else {
// 3. Regular case: produce an XHTML document out
final ElementHandlerController controller = new ElementHandlerController();
// Register handlers on controller (the other handlers are registered by the body handler)
{
controller.registerHandler(
XHTMLHeadHandler.class.getName(), XMLConstants.XHTML_NAMESPACE_URI, "head");
controller.registerHandler(
XHTMLBodyHandler.class.getName(), XMLConstants.XHTML_NAMESPACE_URI, "body");
// Register a handler for AVTs on HTML elements
final boolean hostLanguageAVTs =
XFormsProperties
.isHostLanguageAVTs(); // TODO: this should be obtained per document, but we only
// know about this in the extractor
if (hostLanguageAVTs) {
controller.registerHandler(
XXFormsAttributeHandler.class.getName(),
XFormsConstants.XXFORMS_NAMESPACE_URI,
"attribute");
controller.registerHandler(
XHTMLElementHandler.class.getName(), XMLConstants.XHTML_NAMESPACE_URI);
}
// Swallow XForms elements that are unknown
controller.registerHandler(
NullHandler.class.getName(), XFormsConstants.XFORMS_NAMESPACE_URI);
controller.registerHandler(
NullHandler.class.getName(), XFormsConstants.XXFORMS_NAMESPACE_URI);
controller.registerHandler(NullHandler.class.getName(), XFormsConstants.XBL_NAMESPACE_URI);
}
// Set final output
controller.setOutput(new DeferredXMLReceiverImpl(xmlReceiver));
// Set handler context
controller.setElementHandlerContext(
new HandlerContext(
controller, pipelineContext, containingDocument, externalContext, null));
// Process the entire input
annotatedDocument.replay(
new ExceptionWrapperXMLReceiver(controller, "converting XHTML+XForms document to XHTML"));
}
containingDocument.afterInitialResponse();
}
private void gatherInputDependencies(
PipelineContext pipelineContext,
XFormsContainingDocument containingDocument,
IndentedLogger indentedLogger,
Stage1CacheableState stage1CacheableState) {
final String forwardSubmissionHeaders =
XFormsProperties.getForwardSubmissionHeaders(containingDocument);
// Add static instance source dependencies for top-level models
// TODO: check all models/instances
final XFormsStaticState staticState = containingDocument.getStaticState();
for (final Model model :
staticState.getModelsForScope(staticState.getXBLBindings().getTopLevelScope())) {
for (final Instance instance : model.instancesMap().values()) {
if (instance.dependencyURL() != null) {
final String resolvedDependencyURL =
XFormsUtils.resolveServiceURL(
pipelineContext,
containingDocument,
instance.element(),
instance.dependencyURL(),
ExternalContext.Response.REWRITE_MODE_ABSOLUTE);
if (!instance.isCacheHint()) {
stage1CacheableState.addReference(
null,
resolvedDependencyURL,
instance.xxformsUsername(),
instance.xxformsPassword(),
instance.xxformsPassword(),
forwardSubmissionHeaders);
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
"",
"adding document cache dependency for non-cacheable instance",
"instance URI",
resolvedDependencyURL);
} else {
// Don't add the dependency as we don't want the instance URI to be hit
// For all practical purposes, globally shared instances must remain constant!
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
"",
"not adding document cache dependency for cacheable instance",
"instance URI",
resolvedDependencyURL);
}
}
}
}
// Set caching dependencies if the input was actually read
// TODO: check all models/instances
// Q: should use static dependency information instead? what about schema imports and instance
// replacements?
for (final XFormsModel currentModel : containingDocument.getModels()) {
// Add schema dependencies
final String[] schemaURIs = currentModel.getSchemaURIs();
// TODO: We should also use dependencies computed in XFormsModelSchemaValidator.SchemaInfo
if (schemaURIs != null) {
for (final String currentSchemaURI : schemaURIs) {
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
"", "adding document cache dependency for schema", "schema URI", currentSchemaURI);
stage1CacheableState.addReference(
null,
currentSchemaURI,
null,
null,
null,
forwardSubmissionHeaders); // TODO: support username / password on schema refs
}
}
}
// TODO: Add @src attributes from controls? Not used often.
// Set caching dependencies for XBL inclusions
{
final XFormsStaticState.Metadata metadata = containingDocument.getStaticState().getMetadata();
final Set<String> includes = metadata.getBindingsIncludes();
if (includes != null) {
for (final String include : includes) {
stage1CacheableState.addReference(null, "oxf:" + include, null, null, null, null);
}
}
}
}
public StaticStateBits(
PipelineContext pipelineContext,
ExternalContext externalContext,
IndentedLogger indentedLogger,
String existingStaticStateDigest) {
final boolean computeDigest = isLogStaticStateInput || existingStaticStateDigest == null;
indentedLogger.startHandleOperation(
"", "reading input", "existing digest", existingStaticStateDigest);
final TransformerXMLReceiver documentReceiver =
TransformerUtils.getIdentityTransformerHandler();
final LocationDocumentResult documentResult = new LocationDocumentResult();
documentReceiver.setResult(documentResult);
final XMLUtils.DigestContentHandler digestReceiver =
computeDigest ? new XMLUtils.DigestContentHandler("MD5") : null;
final XMLReceiver extractorOutput;
if (isLogStaticStateInput) {
extractorOutput =
computeDigest
? new TeeXMLReceiver(
documentReceiver, digestReceiver, getDebugReceiver(indentedLogger))
: new TeeXMLReceiver(documentReceiver, getDebugReceiver(indentedLogger));
} else {
extractorOutput =
computeDigest ? new TeeXMLReceiver(documentReceiver, digestReceiver) : documentReceiver;
}
// Read the input through the annotator and gather namespace mappings
//
// Output of annotator is:
//
// o annotated page template (TODO: this should not include model elements)
// o extractor
//
// Output of extractor is:
//
// o static state document
// o optionally: digest
// o optionally: debug output
//
readInputAsSAX(
pipelineContext,
INPUT_ANNOTATED_DOCUMENT,
new XFormsAnnotatorContentHandler(
annotatedTemplate,
new XFormsExtractorContentHandler(extractorOutput, metadata),
metadata));
this.staticStateDocument = documentResult.getDocument();
this.staticStateDigest =
computeDigest ? NumberUtils.toHexString(digestReceiver.getResult()) : null;
assert !isLogStaticStateInput
|| existingStaticStateDigest == null
|| this.staticStateDigest.equals(existingStaticStateDigest);
indentedLogger.endHandleOperation("computed digest", this.staticStateDigest);
}
private void doIt(
final PipelineContext pipelineContext,
XMLReceiver xmlReceiver,
final URIProcessorOutputImpl processorOutput,
String outputName) {
final ExternalContext externalContext = XFormsUtils.getExternalContext(pipelineContext);
final IndentedLogger indentedLogger =
XFormsContainingDocument.getIndentedLogger(
XFormsToXHTML.logger, XFormsServer.getLogger(), LOGGING_CATEGORY);
// ContainingDocument and XFormsState created below
final XFormsContainingDocument[] containingDocument = new XFormsContainingDocument[1];
final boolean[] cachedStatus = new boolean[] {false};
final Stage2CacheableState stage2CacheableState;
if (TEST_STATE == null) {
// Read and try to cache the complete XForms+XHTML document with annotations
stage2CacheableState =
(Stage2CacheableState)
readCacheInputAsObject(
pipelineContext,
getInputByName(INPUT_ANNOTATED_DOCUMENT),
new CacheableInputReader() {
public Object read(
PipelineContext pipelineContext, ProcessorInput processorInput) {
// Compute annotated XForms document + static state document
final Stage1CacheableState stage1CacheableState = new Stage1CacheableState();
final Stage2CacheableState stage2CacheableState;
final XFormsStaticState[] staticState = new XFormsStaticState[1];
{
// Store dependencies container in state before reading
((Stage2TransientState) XFormsToXHTML.this.getState(pipelineContext))
.stage1CacheableState =
stage1CacheableState;
// Read static state from input
stage2CacheableState =
readStaticState(
pipelineContext, externalContext, indentedLogger, staticState);
}
// Create containing document and initialize XForms engine
// NOTE: Create document here so we can do appropriate analysis of caching
// dependencies
final XFormsURIResolver uriResolver =
new XFormsURIResolver(
XFormsToXHTML.this,
processorOutput,
pipelineContext,
INPUT_ANNOTATED_DOCUMENT,
URLGenerator.DEFAULT_HANDLE_XINCLUDE);
containingDocument[0] =
new XFormsContainingDocument(
pipelineContext,
staticState[0],
stage2CacheableState.getAnnotatedTemplate(),
uriResolver);
// Gather set caching dependencies
gatherInputDependencies(
pipelineContext,
containingDocument[0],
indentedLogger,
stage1CacheableState);
return stage2CacheableState;
}
@Override
public void foundInCache() {
cachedStatus[0] = true;
}
},
false);
TEST_STATE = DO_TEST_STATE ? stage2CacheableState : null;
} else {
stage2CacheableState = TEST_STATE;
}
try {
// Create containing document if not done yet
if (containingDocument[0] == null) {
assert cachedStatus[0];
// In this case, we found the static state digest and more in the cache, but we must now
// create a new XFormsContainingDocument from this information
indentedLogger.logDebug(
"",
"annotated document and static state digest obtained from cache",
"digest",
stage2CacheableState.getStaticStateDigest());
final XFormsStaticState staticState;
{
final XFormsStaticState cachedState =
XFormsStaticStateCache.instance()
.getDocument(pipelineContext, stage2CacheableState.getStaticStateDigest());
if (cachedState != null && cachedState.getMetadata().checkBindingsIncludes()) {
// Found static state in cache
indentedLogger.logDebug("", "found up-to-date static state by digest in cache");
staticState = cachedState;
} else {
// Not found static state in cache OR it is out of date, create static state from input
// NOTE: In out of date case, could clone static state and reprocess instead?
if (cachedState != null)
indentedLogger.logDebug("", "found out-of-date static state by digest in cache");
else indentedLogger.logDebug("", "did not find static state by digest in cache");
final StaticStateBits staticStateBits =
new StaticStateBits(
pipelineContext,
externalContext,
indentedLogger,
stage2CacheableState.getStaticStateDigest());
staticState =
new XFormsStaticState(
pipelineContext,
staticStateBits.staticStateDocument,
stage2CacheableState.getStaticStateDigest(),
staticStateBits.metadata);
// Store in cache
XFormsStaticStateCache.instance().storeDocument(pipelineContext, staticState);
}
}
final XFormsURIResolver uriResolver =
new XFormsURIResolver(
XFormsToXHTML.this,
processorOutput,
pipelineContext,
INPUT_ANNOTATED_DOCUMENT,
URLGenerator.DEFAULT_HANDLE_XINCLUDE);
containingDocument[0] =
new XFormsContainingDocument(
pipelineContext,
staticState,
stage2CacheableState.getAnnotatedTemplate(),
uriResolver);
} else {
assert !cachedStatus[0];
indentedLogger.logDebug(
"", "annotated document and static state digest not obtained from cache.");
}
// Output resulting document
if (outputName.equals("document")) {
// Normal case where we output XHTML
outputResponseDocument(
pipelineContext,
externalContext,
indentedLogger,
stage2CacheableState.getAnnotatedTemplate(),
containingDocument[0],
xmlReceiver);
} else {
// Output in test mode
testOutputResponseState(
pipelineContext, containingDocument[0], indentedLogger, xmlReceiver);
}
// Notify state manager
XFormsStateManager.instance().afterInitialResponse(pipelineContext, containingDocument[0]);
} catch (Throwable e) {
indentedLogger.logDebug("", "throwable caught during initialization.");
throw new OXFException(e);
}
}