private Object deserializeInstance(
IndentedLogger indentedLogger,
boolean isReadonly,
boolean isHandleXInclude,
ConnectionResult connectionResult)
throws Exception {
final Object resultingDocument;
// Create resulting instance whether entire instance is replaced or not, because this:
// 1. Wraps a Document within a DocumentInfo if needed
// 2. Performs text nodes adjustments if needed
try {
if (!isReadonly) {
// Resulting instance must not be read-only
// TODO: What about configuring validation? And what default to choose?
resultingDocument =
TransformerUtils.readDom4j(
connectionResult.getResponseInputStream(),
connectionResult.resourceURI,
isHandleXInclude,
true);
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug("", "deserializing to mutable instance");
} else {
// Resulting instance must be read-only
// TODO: What about configuring validation? And what default to choose?
// NOTE: isApplicationSharedHint is always false when get get here.
// isApplicationSharedHint="true" is handled above.
resultingDocument =
TransformerUtils.readTinyTree(
XPathCache.getGlobalConfiguration(),
connectionResult.getResponseInputStream(),
connectionResult.resourceURI,
isHandleXInclude,
true);
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug("", "deserializing to read-only instance");
}
} catch (Exception e) {
throw new XFormsSubmissionException(
submission,
e,
"xforms:submission: exception while reading XML response.",
"processing instance replacement",
new XFormsSubmitErrorEvent(
containingDocument,
submission,
XFormsSubmitErrorEvent.ErrorType.PARSE_ERROR,
connectionResult));
}
return resultingDocument;
}
private XFormsContainingDocument createDocumentFromStore(
RequestParameters parameters, boolean isInitialState, boolean disableUpdates) {
final boolean isServerState = parameters.getEncodedClientStaticState() == null;
final XFormsState xformsState;
if (isServerState) {
// State must be found by UUID in the store
final ExternalContext externalContext = NetUtils.getExternalContext();
final XFormsStateStore stateStore = XFormsStateStoreFactory.instance(externalContext);
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
LOG_TYPE,
"Getting document state from store.",
"current cache size",
Integer.toString(XFormsDocumentCache.instance().getCurrentSize()),
"current store size",
Long.toString(stateStore.getCurrentSize()),
"max store size",
Long.toString(stateStore.getMaxSize()));
final ExternalContext.Session session =
externalContext.getRequest().getSession(XFormsStateManager.FORCE_SESSION_CREATION);
xformsState = stateStore.findState(session, parameters.getUUID(), isInitialState);
if (xformsState == null) {
// 2014-11-12: This means that 1. We had a valid incoming session and 2. we obtained a lock
// on the
// document, yet we didn't find it. This means that somehow state was not placed into or
// expired from
// the state store.
throw new SessionExpiredException(
"Unable to retrieve XForms engine state. Unable to process incoming request.");
}
} else {
// State comes directly with request
xformsState =
new XFormsState(
scala.Option.<String>apply(null),
parameters.getEncodedClientStaticState(),
DynamicState.apply(parameters.getEncodedClientDynamicState()));
}
// Create document
final XFormsContainingDocument document =
new XFormsContainingDocument(xformsState, disableUpdates);
assert isServerState
? document.getStaticState().isServerStateHandling()
: document.getStaticState().isClientStateHandling();
return document;
}
public void execute(
XFormsActionInterpreter actionInterpreter,
PropertyContext propertyContext,
String targetId,
XFormsEventObserver eventObserver,
Element actionElement,
XBLBindings.Scope actionScope,
boolean hasOverriddenContext,
Item overriddenContext) {
final XFormsContainingDocument containingDocument = actionInterpreter.getContainingDocument();
final String controlIdAttributeValue =
XFormsUtils.namespaceId(containingDocument, actionElement.attributeValue("control"));
if (controlIdAttributeValue == null)
throw new OXFException("Missing mandatory 'control' attribute on xforms:control element.");
final String resolvedControlStaticId;
{
// Resolve AVT
resolvedControlStaticId =
actionInterpreter.resolveAVTProvideValue(
propertyContext, actionElement, controlIdAttributeValue, true);
if (resolvedControlStaticId == null) return;
}
final Object controlObject =
actionInterpreter.resolveEffectiveControl(
propertyContext, actionElement, resolvedControlStaticId);
if (controlObject instanceof XFormsControl) {
// Dispatch event to control object
containingDocument.dispatchEvent(
propertyContext,
new XFormsFocusEvent(containingDocument, (XFormsEventTarget) controlObject));
} else {
// "If there is a null search result for the target object and the source object is an XForms
// action such as
// dispatch, send, setfocus, setindex or toggle, then the action is terminated with no
// effect."
final IndentedLogger indentedLogger = actionInterpreter.getIndentedLogger();
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
"xforms:setfocus",
"control does not refer to an existing control element, ignoring action",
"control id",
resolvedControlStaticId);
}
}
public void replace(
PropertyContext propertyContext,
ConnectionResult connectionResult,
XFormsModelSubmission.SubmissionParameters p,
XFormsModelSubmission.SecondPassParameters p2) {
// Set new instance document to replace the one submitted
final XFormsInstance replaceInstanceNoTargetref =
submission.findReplaceInstanceNoTargetref(p.refInstance);
if (replaceInstanceNoTargetref == null) {
// Replacement instance or node was specified but not found
//
// Not sure what's the right thing to do with 1.1, but this could be done
// as part of the model's static analysis if the instance value is not
// obtained through AVT, and dynamically otherwise. However, in the dynamic
// case, I think that this should be a (currently non-specified by XForms)
// xforms-binding-error.
submission
.getXBLContainer(containingDocument)
.dispatchEvent(
propertyContext, new XFormsBindingExceptionEvent(containingDocument, submission));
} else {
final NodeInfo destinationNodeInfo =
submission.evaluateTargetRef(
propertyContext,
p.xpathContext,
replaceInstanceNoTargetref,
p.submissionElementContextItem);
if (destinationNodeInfo == null) {
// Throw target-error
// XForms 1.1: "If the processing of the targetref attribute fails,
// then submission processing ends after dispatching the event
// xforms-submit-error with an error-type of target-error."
throw new XFormsSubmissionException(
submission,
"targetref attribute doesn't point to an element for replace=\"instance\".",
"processing targetref attribute",
new XFormsSubmitErrorEvent(
containingDocument,
propertyContext,
submission,
XFormsSubmitErrorEvent.ErrorType.TARGET_ERROR,
connectionResult));
}
// This is the instance which is effectively going to be updated
final XFormsInstance updatedInstance =
containingDocument.getInstanceForNode(destinationNodeInfo);
if (updatedInstance == null) {
throw new XFormsSubmissionException(
submission,
"targetref attribute doesn't point to an element in an existing instance for replace=\"instance\".",
"processing targetref attribute",
new XFormsSubmitErrorEvent(
containingDocument,
propertyContext,
submission,
XFormsSubmitErrorEvent.ErrorType.TARGET_ERROR,
connectionResult));
}
// Whether the destination node is the root element of an instance
final boolean isDestinationRootElement =
updatedInstance.getInstanceRootElementInfo().isSameNodeInfo(destinationNodeInfo);
if (p2.isReadonly && !isDestinationRootElement) {
// Only support replacing the root element of an instance when using a shared instance
throw new XFormsSubmissionException(
submission,
"targetref attribute must point to instance root element when using read-only instance replacement.",
"processing targetref attribute",
new XFormsSubmitErrorEvent(
containingDocument,
propertyContext,
submission,
XFormsSubmitErrorEvent.ErrorType.TARGET_ERROR,
connectionResult));
}
final IndentedLogger detailsLogger = getDetailsLogger(p, p2);
// Obtain root element to insert
final NodeInfo newDocumentRootElement;
final XFormsInstance newInstance;
{
// Create resulting instance whether entire instance is replaced or not, because this:
// 1. Wraps a Document within a DocumentInfo if needed
// 2. Performs text nodes adjustments if needed
if (!p2.isReadonly) {
// Resulting instance must not be read-only
if (detailsLogger.isDebugEnabled())
detailsLogger.logDebug(
"",
"replacing instance with mutable instance",
"instance",
updatedInstance.getEffectiveId());
newInstance =
new XFormsInstance(
updatedInstance.getEffectiveModelId(),
updatedInstance.getId(),
(Document) resultingDocument,
connectionResult.resourceURI,
resultingRequestBodyHash,
p2.username,
p2.password,
p2.isCache,
p2.timeToLive,
updatedInstance.getValidation(),
p2.isHandleXInclude,
XFormsProperties.isExposeXPathTypes(containingDocument));
} else {
// Resulting instance must be read-only
if (detailsLogger.isDebugEnabled())
detailsLogger.logDebug(
"",
"replacing instance with read-only instance",
"instance",
updatedInstance.getEffectiveId());
newInstance =
new ReadonlyXFormsInstance(
updatedInstance.getEffectiveModelId(),
updatedInstance.getId(),
(DocumentInfo) resultingDocument,
connectionResult.resourceURI,
resultingRequestBodyHash,
p2.username,
p2.password,
p2.isCache,
p2.timeToLive,
updatedInstance.getValidation(),
p2.isHandleXInclude,
XFormsProperties.isExposeXPathTypes(containingDocument));
}
newDocumentRootElement = newInstance.getInstanceRootElementInfo();
}
// Perform insert/delete. This will dispatch xforms-insert/xforms-delete events.
// "the replacement is performed by an XForms action that performs some
// combination of node insertion and deletion operations that are
// performed by the insert action (10.3 The insert Element) and the
// delete action"
if (isDestinationRootElement) {
// Optimized insertion for instance root element replacement
// Handle new instance and associated event markings
final XFormsModel replaceModel = newInstance.getModel(containingDocument);
replaceModel.handleUpdatedInstance(propertyContext, newInstance, newDocumentRootElement);
// Dispatch xforms-delete event
// NOTE: Do NOT dispatch so we are compatible with the regular root element replacement
// (see below). In the future, we might want to dispatch this, especially if
// XFormsInsertAction dispatches xforms-delete when removing the root element
// updatedInstance.getXBLContainer(containingDocument).dispatchEvent(pipelineContext, new
// XFormsDeleteEvent(updatedInstance, Collections.singletonList(destinationNodeInfo), 1));
// Dispatch xforms-insert event
// NOTE: use the root node as insert location as it seems to make more sense than pointing
// to the earlier root element
newInstance
.getXBLContainer(containingDocument)
.dispatchEvent(
propertyContext,
new XFormsInsertEvent(
containingDocument,
newInstance,
Collections.singletonList((Item) newDocumentRootElement),
null,
newDocumentRootElement.getDocumentRoot(),
"after",
null,
null,
true));
} else {
// Generic insertion
final List<NodeInfo> destinationCollection = Collections.singletonList(destinationNodeInfo);
// Perform the insertion
// Insert before the target node, so that the position of the inserted node
// wrt its parent does not change after the target node is removed
final List insertedNode =
XFormsInsertAction.doInsert(
propertyContext,
containingDocument,
detailsLogger,
"before",
destinationCollection,
destinationNodeInfo.getParent(),
Collections.singletonList(newDocumentRootElement),
1,
false,
true);
if (!destinationNodeInfo
.getParent()
.isSameNodeInfo(destinationNodeInfo.getDocumentRoot())) {
// The node to replace is NOT a root element
// Perform the deletion of the selected node
XFormsDeleteAction.doDelete(
propertyContext, containingDocument, detailsLogger, destinationCollection, 1, true);
}
// Perform model instance update
// Handle new instance and associated event markings
// NOTE: The inserted node NodeWrapper.index might be out of date at this point because:
// * doInsert() dispatches an event which might itself change the instance
// * doDelete() does as well
// Does this mean that we should check that the node is still where it should be?
final XFormsModel updatedModel = updatedInstance.getModel(containingDocument);
updatedModel.handleUpdatedInstance(
propertyContext, updatedInstance, (NodeInfo) insertedNode.get(0));
}
// Dispatch xforms-submit-done
dispatchSubmitDone(propertyContext, connectionResult);
}
}
public Runnable replace(
final ConnectionResult connectionResult,
XFormsModelSubmission.SubmissionParameters p,
XFormsModelSubmission.SecondPassParameters p2) {
// Set new instance document to replace the one submitted
final XFormsInstance replaceInstanceNoTargetref =
submission.findReplaceInstanceNoTargetref(p.refInstance);
if (replaceInstanceNoTargetref == null) {
// Replacement instance or node was specified but not found
//
// Not sure what's the right thing to do with 1.1, but this could be done
// as part of the model's static analysis if the instance value is not
// obtained through AVT, and dynamically otherwise.
//
// Another option would be to dispatch, at runtime, an xxforms-binding-error event.
// xforms-submit-error is
// consistent with targetref, so might be better.
throw new XFormsSubmissionException(
submission,
"instance attribute doesn't point to an existing instance for replace=\"instance\".",
"processing instance attribute",
new XFormsSubmitErrorEvent(
containingDocument,
submission,
XFormsSubmitErrorEvent.ErrorType.TARGET_ERROR,
connectionResult));
} else {
final NodeInfo destinationNodeInfo =
submission.evaluateTargetRef(
p.xpathContext, replaceInstanceNoTargetref, p.submissionElementContextItem);
if (destinationNodeInfo == null) {
// Throw target-error
// XForms 1.1: "If the processing of the targetref attribute fails,
// then submission processing ends after dispatching the event
// xforms-submit-error with an error-type of target-error."
throw new XFormsSubmissionException(
submission,
"targetref attribute doesn't point to an element for replace=\"instance\".",
"processing targetref attribute",
new XFormsSubmitErrorEvent(
containingDocument,
submission,
XFormsSubmitErrorEvent.ErrorType.TARGET_ERROR,
connectionResult));
}
// This is the instance which is effectively going to be updated
final XFormsInstance updatedInstance =
containingDocument.getInstanceForNode(destinationNodeInfo);
if (updatedInstance == null) {
throw new XFormsSubmissionException(
submission,
"targetref attribute doesn't point to an element in an existing instance for replace=\"instance\".",
"processing targetref attribute",
new XFormsSubmitErrorEvent(
containingDocument,
submission,
XFormsSubmitErrorEvent.ErrorType.TARGET_ERROR,
connectionResult));
}
// Whether the destination node is the root element of an instance
final boolean isDestinationRootElement =
updatedInstance.instanceRoot().isSameNodeInfo(destinationNodeInfo);
if (p2.isReadonly && !isDestinationRootElement) {
// Only support replacing the root element of an instance when using a shared instance
throw new XFormsSubmissionException(
submission,
"targetref attribute must point to instance root element when using read-only instance replacement.",
"processing targetref attribute",
new XFormsSubmitErrorEvent(
containingDocument,
submission,
XFormsSubmitErrorEvent.ErrorType.TARGET_ERROR,
connectionResult));
}
final IndentedLogger detailsLogger = getDetailsLogger(p, p2);
// Obtain root element to insert
if (detailsLogger.isDebugEnabled())
detailsLogger.logDebug(
"",
p2.isReadonly
? "replacing instance with read-only instance"
: "replacing instance with mutable instance",
"instance",
updatedInstance.getEffectiveId());
// Perform insert/delete. This will dispatch xforms-insert/xforms-delete events.
// "the replacement is performed by an XForms action that performs some
// combination of node insertion and deletion operations that are
// performed by the insert action (10.3 The insert Element) and the
// delete action"
// NOTE: As of 2009-03-18 decision, XForms 1.1 specifies that deferred event handling flags
// are set instead of
// performing RRRR directly.
final DocumentInfo newDocumentInfo =
wrappedDocumentInfo != null
? wrappedDocumentInfo
: XFormsInstance.createDocumentInfo(
resultingDocumentOrDocumentInfo, updatedInstance.instance().exposeXPathTypes());
if (isDestinationRootElement) {
// Optimized insertion for instance root element replacement
// Update the instance (this also marks it as modified)
updatedInstance.update(
Option.<InstanceCaching>apply(instanceCaching), newDocumentInfo, p2.isReadonly);
final NodeInfo newDocumentRootElement = updatedInstance.instanceRoot();
// Call this directly, since we are not using insert/delete here
updatedInstance.model().markStructuralChange(updatedInstance);
// Dispatch xforms-delete event
// NOTE: Do NOT dispatch so we are compatible with the regular root element replacement
// (see below). In the future, we might want to dispatch this, especially if
// XFormsInsertAction dispatches xforms-delete when removing the root element
// updatedInstance.getXBLContainer(containingDocument).dispatchEvent(pipelineContext, new
// XFormsDeleteEvent(updatedInstance, Collections.singletonList(destinationNodeInfo), 1));
// Dispatch xforms-insert event
// NOTE: use the root node as insert location as it seems to make more sense than pointing
// to the earlier root element
Dispatch.dispatchEvent(
new XFormsInsertEvent(
containingDocument,
updatedInstance,
Collections.singletonList((Item) newDocumentRootElement),
null,
newDocumentRootElement.getDocumentRoot(),
"after"));
} else {
// Generic insertion
updatedInstance.markModified();
final NodeInfo newDocumentRootElement = DataModel.firstChildElement(newDocumentInfo);
final List<NodeInfo> destinationCollection = Collections.singletonList(destinationNodeInfo);
// Perform the insertion
// Insert before the target node, so that the position of the inserted node
// wrt its parent does not change after the target node is removed
// This will also mark a structural change
XFormsInsertAction.doInsert(
containingDocument,
detailsLogger,
"before",
destinationCollection,
destinationNodeInfo.getParent(),
Collections.singletonList(newDocumentRootElement),
1,
false,
true);
if (!destinationNodeInfo
.getParent()
.isSameNodeInfo(destinationNodeInfo.getDocumentRoot())) {
// The node to replace is NOT a root element
// Perform the deletion of the selected node
XFormsDeleteAction.doDelete(
containingDocument, detailsLogger, destinationCollection, 1, true);
}
// Update model instance
// NOTE: The inserted node NodeWrapper.index might be out of date at this point because:
// * doInsert() dispatches an event which might itself change the instance
// * doDelete() does as well
// Does this mean that we should check that the node is still where it should be?
}
// Dispatch xforms-submit-done
return submission.sendSubmitDone(connectionResult);
}
}
public void execute(
XFormsActionInterpreter actionInterpreter,
Element actionElement,
Scope actionScope,
boolean hasOverriddenContext,
Item overriddenContext) {
final XFormsContainingDocument containingDocument = actionInterpreter.containingDocument();
// Resolve all attributes as AVTs
final String dialogStaticOrEffectiveId = actionInterpreter.resolveAVT(actionElement, "dialog");
final String neighborEffectiveId;
{
final String neighborStaticOrEffectiveId =
actionInterpreter.resolveAVT(actionElement, "neighbor");
final XFormsControl neighbor =
(XFormsControl)
((neighborStaticOrEffectiveId != null)
? actionInterpreter.resolveOrFindByEffectiveId(
actionElement, neighborStaticOrEffectiveId)
: null);
neighborEffectiveId = (neighbor != null) ? neighbor.getEffectiveId() : null;
}
final boolean constrainToViewport;
{
final String constrain = actionInterpreter.resolveAVT(actionElement, "constrain");
constrainToViewport = !"false".equals(constrain);
}
if (dialogStaticOrEffectiveId != null) {
// Dispatch xxforms-dialog-open event to dialog
final Object controlObject =
actionInterpreter.resolveOrFindByEffectiveId(actionElement, dialogStaticOrEffectiveId);
if (controlObject instanceof XXFormsDialogControl) {
final XXFormsDialogControl targetDialog = (XXFormsDialogControl) controlObject;
// Remove focus if any
containingDocument.setClientFocusEffectiveControlId(null);
final XFormsEvent newEvent =
new XXFormsDialogOpenEvent(
containingDocument, targetDialog, neighborEffectiveId, constrainToViewport);
addContextAttributes(actionInterpreter, actionElement, newEvent);
targetDialog.getXBLContainer(containingDocument).dispatchEvent(newEvent);
// Check if form author has set focus while dialog was opening, and if not focus on dialog
final String currentFocusEffectiveId =
containingDocument.getClientFocusControlEffectiveId();
if (currentFocusEffectiveId == null && targetDialog.isVisible())
targetDialog
.getXBLContainer()
.dispatchEvent(new XFormsFocusEvent(containingDocument, targetDialog));
} else {
final IndentedLogger indentedLogger = actionInterpreter.indentedLogger();
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
"xxforms:show",
"dialog does not refer to an existing xxforms:dialog element, ignoring action",
"dialog id",
dialogStaticOrEffectiveId);
}
}
}
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);
}
}
}
}
private XFormsContainingDocument createDocumentFromStore(
RequestParameters parameters, boolean isInitialState, boolean disableUpdates) {
final boolean isServerState = parameters.getEncodedClientStaticState() == null;
final XFormsState xformsState;
if (isServerState) {
// State must be found by UUID in the store
final ExternalContext externalContext = NetUtils.getExternalContext();
final XFormsStateStore stateStore = XFormsStateStoreFactory.instance(externalContext);
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
LOG_TYPE,
"Getting document state from store.",
"current cache size",
Integer.toString(XFormsDocumentCache.instance().getCurrentSize()),
"current store size",
Long.toString(stateStore.getCurrentSize()),
"max store size",
Long.toString(stateStore.getMaxSize()));
final ExternalContext.Session session =
externalContext.getRequest().getSession(XFormsStateManager.FORCE_SESSION_CREATION);
xformsState = stateStore.findState(session, parameters.getUUID(), isInitialState);
if (xformsState == null) {
// Oops, we couldn't find the state in the store
final String UNABLE_TO_RETRIEVE_XFORMS_STATE_MESSAGE =
"Unable to retrieve XForms engine state.";
final String PLEASE_RELOAD_PAGE_MESSAGE =
"Please reload the current page. Note that you will lose any unsaved changes.";
// Produce exception
final ExternalContext.Session currentSession =
externalContext.getRequest().getSession(false);
final String message;
if (currentSession == null || currentSession.isNew()) {
// This means that no session is currently existing, or a session exists but it is newly
// created
message = "Your session has expired. " + PLEASE_RELOAD_PAGE_MESSAGE;
} else {
// There is a session and it is still known by the client
message = UNABLE_TO_RETRIEVE_XFORMS_STATE_MESSAGE + " " + PLEASE_RELOAD_PAGE_MESSAGE;
}
indentedLogger.logError("", message);
throw new OXFException(message);
}
} else {
// State comes directly with request
xformsState =
new XFormsState(
scala.Option.<String>apply(null),
parameters.getEncodedClientStaticState(),
DynamicState.apply(parameters.getEncodedClientDynamicState()));
}
// Create document
final XFormsContainingDocument document =
new XFormsContainingDocument(xformsState, disableUpdates);
assert isServerState
? document.getStaticState().isServerStateHandling()
: document.getStaticState().isClientStateHandling();
return document;
}
public void execute(
XFormsActionInterpreter actionInterpreter,
Element actionElement,
Scope actionScope,
boolean hasOverriddenContext,
Item overriddenContext) {
final IndentedLogger indentedLogger = actionInterpreter.indentedLogger();
final XFormsContainingDocument containingDocument = actionInterpreter.containingDocument();
final XFormsContextStack contextStack = actionInterpreter.actionXPathContext();
final String atAttribute = actionElement.attributeValue("at");
final String originAttribute = actionElement.attributeValue("origin");
final String contextAttribute = actionElement.attributeValue(XFormsConstants.CONTEXT_QNAME);
// Extension: allow position to be an AVT
final String resolvedPositionAttribute =
actionInterpreter.resolveAVT(actionElement, "position");
// Extension: xxf:default="true" AVT requires that recalculate apply default values on the
// inserted nodes.
final boolean setRequireDefaultValues =
"true"
.equals(
actionInterpreter.resolveAVT(
actionElement, XFormsConstants.XXFORMS_DEFAULTS_QNAME));
// "2. The Node Set Binding node-set is determined."
final List<Item> collectionToBeUpdated;
{
final BindingContext currentBindingContext = contextStack.getCurrentBindingContext();
collectionToBeUpdated =
currentBindingContext.newBind()
? currentBindingContext.nodeset()
: XFormsConstants.EMPTY_ITEM_LIST;
}
final boolean isEmptyNodesetBinding =
collectionToBeUpdated == null || collectionToBeUpdated.size() == 0;
// "1. The insert context is determined."
// "The insert action is terminated with no effect if [...] a. The context attribute is not
// given and the Node
// Set Binding node-set is the empty node-set."
if (contextAttribute == null && isEmptyNodesetBinding) {
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug("xf:insert", "context is empty, terminating");
return;
}
// Handle insert context (with @context attribute)
final Item insertContextItem;
if (hasOverriddenContext) {
// "If the result is an empty nodeset or not a nodeset, then the insert action is terminated
// with no effect. "
if (overriddenContext == null || !(overriddenContext instanceof NodeInfo)) {
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
"xf:insert", "overridden context is an empty nodeset or not a nodeset, terminating");
return;
} else {
insertContextItem = overriddenContext;
}
} else {
insertContextItem = contextStack.getCurrentBindingContext().getSingleItem();
}
// "The insert action is terminated with no effect if [...] b. The context attribute is given,
// the insert
// context does not evaluate to an element node and the Node Set Binding node-set is the empty
// node-set."
// NOTE: In addition we support inserting into a context which is a document node
if (contextAttribute != null
&& isEmptyNodesetBinding
&& !DataModel.isElement(insertContextItem)
&& !DataModel.isDocument(insertContextItem)) {
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
"xf:insert",
"insert context is not an element node and binding node-set is empty, terminating");
return;
}
// "3. The origin node-set is determined."
final List<Item> originObjects;
{
if (originAttribute == null) {
originObjects = null;
} else {
// There is an @origin attribute
// "If the origin attribute is given, the origin node-set is the result of the evaluation of
// the
// origin attribute in the insert context."
originObjects =
actionInterpreter.evaluateKeepItems(
actionElement, Collections.singletonList(insertContextItem), 1, originAttribute);
// "The insert action is terminated with no effect if the origin node-set is the empty
// node-set."
if (originObjects.size() == 0) {
if (indentedLogger.isDebugEnabled())
indentedLogger.logDebug("xf:insert", "origin node-set is empty, terminating");
return;
}
}
}
// "4. The insert location node is determined."
int insertionIndex;
{
if (isEmptyNodesetBinding) {
// "If the Node Set Binding node-set empty, then this attribute is ignored"
insertionIndex = 0;
} else if (atAttribute == null) {
// "If the attribute is not given, then the default is the size of the Node Set Binding
// node-set"
insertionIndex = collectionToBeUpdated.size();
} else {
// "a. The evaluation context node is the first node in document order from the Node Set
// Binding
// node-set, the context size is the size of the Node Set Binding node-set, and the context
// position is 1."
// "b. The return value is processed according to the rules of the XPath function round()"
final String insertionIndexString =
actionInterpreter.evaluateAsString(
actionElement, collectionToBeUpdated, 1, "round(" + atAttribute + ")");
// "c. If the result is in the range 1 to the Node Set Binding node-set size, then the
// insert
// location is equal to the result. If the result is non-positive, then the insert location
// is
// 1. Otherwise, the result is NaN or exceeds the Node Set Binding node-set size, so the
// insert
// location is the Node Set Binding node-set size."
// Don't think we will get NaN with XPath 2.0...
insertionIndex =
"NaN".equals(insertionIndexString)
? collectionToBeUpdated.size()
: Integer.parseInt(insertionIndexString);
// Adjust index to be in range
if (insertionIndex > collectionToBeUpdated.size())
insertionIndex = collectionToBeUpdated.size();
if (insertionIndex < 1) insertionIndex = 1;
}
}
final String normalizedPosition;
{
if (resolvedPositionAttribute == null) {
// Default value
normalizedPosition = "after";
} else if ("after".equals(resolvedPositionAttribute)
|| "before".equals(resolvedPositionAttribute)) {
// Specified value
normalizedPosition = resolvedPositionAttribute;
} else {
// Invalid value
if (indentedLogger.isInfoEnabled())
indentedLogger.logWarning(
"xf:insert",
"invalid position attribute, defaulting to \"after\"",
"value",
resolvedPositionAttribute);
normalizedPosition = "after";
}
}
doInsert(
containingDocument,
indentedLogger,
normalizedPosition,
collectionToBeUpdated,
(NodeInfo) insertContextItem,
originObjects,
insertionIndex,
true,
true,
setRequireDefaultValues);
}
public static List<NodeInfo> doInsert(
XFormsContainingDocument containingDocument,
IndentedLogger indentedLogger,
String positionAttribute,
List collectionToBeUpdated,
NodeInfo insertContextNodeInfo,
List<Item> originItems,
int insertionIndex,
boolean doClone,
boolean doDispatch,
boolean requireDefaultValues) {
final boolean isEmptyNodesetBinding =
collectionToBeUpdated == null || collectionToBeUpdated.size() == 0;
final NodeInfo insertLocationNodeInfo;
if (isEmptyNodesetBinding) {
// Insert INTO a node
// "If the Node Set Binding node-set is not specified or empty, the insert location node is
// the insert
// context node."
// "a. If the Node Set Binding node-set is not specified or empty, the target location depends
// on the
// node type of the cloned node. If the cloned node is an attribute, then the target location
// is before
// the first attribute of the insert location node. If the cloned node is not an attribute,
// then the
// target location is before the first child of the insert location node."
insertLocationNodeInfo = insertContextNodeInfo;
} else {
// Insert BEFORE or AFTER a node
insertLocationNodeInfo = (NodeInfo) collectionToBeUpdated.get(insertionIndex - 1);
}
// Identify the instance that actually changes
final XFormsInstance modifiedInstanceOrNull =
(containingDocument != null)
? containingDocument.getInstanceForNode(insertLocationNodeInfo)
: null;
// NOTE: The check on `hasAnyCalculationBind` is not optimal: we should check whether
// specifically there are any xxf:default which can touch this
// instance, ideally.
// NOTE: We do this test here so that we don't unnecessarily annotate nodes.
final boolean applyDefaults =
requireDefaultValues
&& modifiedInstanceOrNull != null
&& modifiedInstanceOrNull.model().staticModel().hasDefaultValueBind()
&& containingDocument
.getXPathDependencies()
.hasAnyCalculationBind(
modifiedInstanceOrNull.model().staticModel(),
modifiedInstanceOrNull.getPrefixedId());
// "3. The origin node-set is determined."
// "5. Each node in the origin node-set is cloned in the order it appears in the origin
// node-set."
final List<Node> sourceNodes;
final List<Node> clonedNodes;
{
final List<Node> clonedNodesTemp;
if (originItems == null) {
// There are no explicitly specified origin objects, use node from Node Set Binding node-set
// "If the origin attribute is not given and the Node Set Binding node-set is empty, then
// the origin
// node-set is the empty node-set. [...] The insert action is terminated with no effect if
// the
// origin node-set is the empty node-set."
if (isEmptyNodesetBinding) {
if (indentedLogger != null && indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
"xf:insert", "origin node-set from node-set binding is empty, terminating");
return Collections.emptyList();
}
// "Otherwise, if the origin attribute is not given, then the origin node-set consists of
// the last
// node of the Node Set Binding node-set."
final Node singleSourceNode =
XFormsUtils.getNodeFromNodeInfoConvert(
(NodeInfo) collectionToBeUpdated.get(collectionToBeUpdated.size() - 1));
// TODO: check namespace handling might be incorrect. Should use
// copyElementCopyParentNamespaces() instead?
final Node singleClonedNode = Dom4jUtils.createCopy(singleSourceNode);
sourceNodes = Collections.singletonList(singleSourceNode);
clonedNodesTemp = Collections.singletonList(singleClonedNode);
} else {
// There are explicitly specified origin objects
// "The insert action is terminated with no effect if the origin node-set is the empty
// node-set."
if (originItems.size() == 0) {
if (indentedLogger != null && indentedLogger.isDebugEnabled())
indentedLogger.logDebug("xf:insert", "origin node-set is empty, terminating");
return Collections.emptyList();
}
// "Each node in the origin node-set is cloned in the order it appears in the origin
// node-set."
sourceNodes = new ArrayList<Node>(originItems.size()); // set to max possible size
clonedNodesTemp = new ArrayList<Node>(originItems.size());
for (final Object currentObject : originItems) {
if (currentObject instanceof NodeInfo) {
// This is the regular case covered by XForms 1.1 / XPath 1.0
// NOTE: Don't clone nodes if doClone == false
final Node sourceNode =
XFormsUtils.getNodeFromNodeInfoConvert((NodeInfo) currentObject);
final Node clonedNode =
doClone
? (sourceNode instanceof Element)
? ((Element) sourceNode).createCopy()
: (Node) sourceNode.clone()
: sourceNode;
sourceNodes.add(sourceNode);
clonedNodesTemp.add(clonedNode);
} else if (currentObject instanceof AtomicValue) {
// This is an extension: support sequences containing atomic values
// Convert the result to a text node
final String stringValue = ((Item) currentObject).getStringValue();
final Text textNode = DocumentFactory.createText(stringValue);
sourceNodes.add(
null); // there is no source node for this cloned node, it's a source item
clonedNodesTemp.add(textNode);
} else throw new IllegalStateException();
}
}
// Remove instance data from cloned nodes and perform Document node adjustment
for (int i = 0; i < clonedNodesTemp.size(); i++) {
final Node clonedNodeTemp = clonedNodesTemp.get(i);
if (clonedNodeTemp instanceof Element) {
// Element node
if (applyDefaults) InstanceDataOps.setRequireDefaultValueRecursively(clonedNodeTemp);
else InstanceDataOps.removeRecursively(clonedNodeTemp);
clonedNodeTemp.detach();
} else if (clonedNodeTemp instanceof Attribute) {
// Attribute node
if (applyDefaults) InstanceDataOps.setRequireDefaultValueRecursively(clonedNodeTemp);
else InstanceDataOps.removeRecursively(clonedNodeTemp);
clonedNodeTemp.detach();
} else if (clonedNodeTemp instanceof Document) {
// Document node
final Element clonedNodeTempRootElement = clonedNodeTemp.getDocument().getRootElement();
if (clonedNodeTempRootElement == null) {
// Can be null in rare cases of documents without root element
clonedNodesTemp.set(
i, null); // we support having a null node further below, so set this to null
} else {
if (applyDefaults)
InstanceDataOps.setRequireDefaultValueRecursively(clonedNodeTempRootElement);
else InstanceDataOps.removeRecursively(clonedNodeTempRootElement);
// We can never really insert a document into anything at this point, but we assume that
// this means the root element
clonedNodesTemp.set(i, clonedNodeTempRootElement.detach());
}
} else {
// Other nodes
clonedNodeTemp.detach();
}
}
clonedNodes = clonedNodesTemp;
}
// "6. The target location of each cloned node or nodes is determined"
// "7. The cloned node or nodes are inserted in the order they were cloned at their target
// location
// depending on their node type."
// Find actual insertion point and insert
final int insertLocationIndexWithinParentBeforeUpdate;
final List<Node> insertedNodes;
final String beforeAfterInto;
if (isEmptyNodesetBinding) {
// Insert INTO a node
insertLocationIndexWithinParentBeforeUpdate =
findNodeIndexRewrapIfNeeded(insertLocationNodeInfo);
final Node insertLocationNode =
XFormsUtils.getNodeFromNodeInfo(insertContextNodeInfo, CANNOT_INSERT_READONLY_MESSAGE);
insertedNodes = doInsert(insertLocationNode, clonedNodes, modifiedInstanceOrNull, doDispatch);
beforeAfterInto = "into";
// Normalize text nodes if needed to respect XPath 1.0 constraint
{
boolean hasTextNode = false;
for (Node clonedNode : clonedNodes) {
hasTextNode |= clonedNode != null && (clonedNode instanceof Text);
}
if (hasTextNode) Dom4jUtils.normalizeTextNodes(insertLocationNode);
}
} else {
// Insert BEFORE or AFTER a node
insertLocationIndexWithinParentBeforeUpdate =
findNodeIndexRewrapIfNeeded(insertLocationNodeInfo);
final Node insertLocationNode =
XFormsUtils.getNodeFromNodeInfo(insertLocationNodeInfo, CANNOT_INSERT_READONLY_MESSAGE);
final Document insertLocationNodeDocument = insertLocationNode.getDocument();
if (insertLocationNodeDocument != null
&& insertLocationNodeDocument.getRootElement() == insertLocationNode) {
// "c. if insert location node is the root element of an instance, then that instance root
// element
// location is the target location. If there is more than one cloned node to insert, only
// the
// first node that does not cause a conflict is considered."
insertedNodes =
doInsert(
insertLocationNode.getDocument(), clonedNodes, modifiedInstanceOrNull, doDispatch);
beforeAfterInto = positionAttribute; // TODO: ideally normalize to "into document node"?
// NOTE: Don't need to normalize text nodes in this case, as no new text node is inserted
} else {
// "d. Otherwise, the target location is immediately before or after the insert location
// node, based on the position attribute setting or its default."
if (insertLocationNode instanceof Attribute) {
// Special case for "next to an attribute"
// NOTE: In XML, attributes are unordered. dom4j handles them as a list so has order, but
// the XForms spec shouldn't rely on attribute order. We could try to keep the order, but
// it
// is harder as we have to deal with removing duplicate attributes and find a reasonable
// insertion strategy.
// TODO: Don't think we should even do this now in XForms 1.1
insertedNodes =
doInsert(
insertLocationNode.getParent(), clonedNodes, modifiedInstanceOrNull, doDispatch);
} else {
// Other node types
final Element parentNode = insertLocationNode.getParent();
final List<Node> siblingElements = parentNode.content();
final int actualIndex = siblingElements.indexOf(insertLocationNode);
// Prepare insertion of new element
final int actualInsertionIndex;
if ("before".equals(positionAttribute)) {
actualInsertionIndex = actualIndex;
} else {
// "after"
actualInsertionIndex = actualIndex + 1;
}
// "7. The cloned node or nodes are inserted in the order they were cloned at their target
// location depending on their node type."
boolean hasTextNode = false;
int addIndex = 0;
insertedNodes = new ArrayList<Node>(clonedNodes.size());
for (Node clonedNode : clonedNodes) {
if (clonedNode != null) { // NOTE: we allow passing some null nodes so we check on null
if (!(clonedNode instanceof Attribute || clonedNode instanceof Namespace)) {
// Element, text, comment, processing instruction node
siblingElements.add(actualInsertionIndex + addIndex, clonedNode);
insertedNodes.add(clonedNode);
hasTextNode |= clonedNode instanceof Text;
addIndex++;
} else {
// We never insert attributes or namespace nodes as siblings
if (indentedLogger != null && indentedLogger.isDebugEnabled())
indentedLogger.logDebug(
"xf:insert",
"skipping insertion of node as sibling in element content",
"type",
Node$.MODULE$.nodeTypeName(clonedNode),
"node",
clonedNode instanceof Attribute
? Dom4jUtils.attributeToDebugString((Attribute) clonedNode)
: clonedNode.toString());
}
}
}
// Normalize text nodes if needed to respect XPath 1.0 constraint
if (hasTextNode) Dom4jUtils.normalizeTextNodes(parentNode);
}
beforeAfterInto = positionAttribute;
}
}
// Whether some nodes were inserted
final boolean didInsertNodes = insertedNodes != null && insertedNodes.size() > 0;
// Log stuff
if (indentedLogger != null && indentedLogger.isDebugEnabled()) {
if (didInsertNodes)
indentedLogger.logDebug(
"xf:insert",
"inserted nodes",
"count",
Integer.toString(insertedNodes.size()),
"instance",
(modifiedInstanceOrNull != null) ? modifiedInstanceOrNull.getEffectiveId() : null);
else indentedLogger.logDebug("xf:insert", "no node inserted");
}
// "XForms Actions that change the tree structure of instance data result in setting all four
// flags to true"
if (didInsertNodes && modifiedInstanceOrNull != null) {
// NOTE: Can be null if document into which delete is performed is not in an instance, e.g. in
// a variable
modifiedInstanceOrNull.markModified();
modifiedInstanceOrNull
.model()
.markStructuralChange(
scala.Option.<XFormsInstance>apply(modifiedInstanceOrNull),
FlaggedDefaultsStrategy$.MODULE$);
}
// Gather list of modified nodes
final List<NodeInfo> insertedNodeInfos;
if (didInsertNodes && modifiedInstanceOrNull != null) {
// Instance can be null if document into which delete is performed is not in an instance, e.g.
// in a variable
final DocumentWrapper documentWrapper =
(DocumentWrapper) modifiedInstanceOrNull.documentInfo();
insertedNodeInfos = new ArrayList<NodeInfo>(insertedNodes.size());
for (Node insertedNode : insertedNodes)
insertedNodeInfos.add(documentWrapper.wrap(insertedNode));
} else {
insertedNodeInfos = Collections.emptyList();
}
// "4. If the insert is successful, the event xforms-insert is dispatched."
// XFormsInstance handles index and repeat items updates
if (doDispatch && didInsertNodes && modifiedInstanceOrNull != null) {
// Adjust insert location node and before/after/into in case the root element was replaced
final NodeInfo adjustedInsertLocationNodeInfo;
final String adjustedBeforeAfterInto;
final NodeInfo parent =
insertedNodeInfos.get(0).getNodeKind() == org.w3c.dom.Node.ELEMENT_NODE
? insertedNodeInfos.get(0).getParent()
: null;
if (parent != null && parent.equals(parent.getDocumentRoot())) {
// Node was inserted under document node
adjustedInsertLocationNodeInfo = parent.getDocumentRoot();
adjustedBeforeAfterInto = "into";
} else {
adjustedInsertLocationNodeInfo = rewrapIfNeeded(insertLocationNodeInfo);
adjustedBeforeAfterInto = beforeAfterInto;
}
Dispatch.dispatchEvent(
new XFormsInsertEvent(
modifiedInstanceOrNull,
insertedNodeInfos,
originItems,
adjustedInsertLocationNodeInfo,
adjustedBeforeAfterInto,
insertLocationIndexWithinParentBeforeUpdate));
}
return insertedNodeInfos;
}