findNodesByXPath within resolveReference unreliable
Posted: Tue May 05, 2015 8:30 am
Hi,
I implemented my own ValidatingAuthorReferenceResolver class (derived from DITAConRefResolver) and need to use findNodesByXPath inside resolveReference. In priciple this works fine but when the reference is resolved for the first time (after adding the element to be resolved or modifying in in text mode and switching to author mode) the result is wrong. A refresh always resolves it but with the increasing use of this feature also the annoyance grows.
Here is a minimized sample:
Now when adding an element resolveReferenceTest within the body of a topic (as root element) the exception "No parent" is thrown. In other cases (with more content in the file) the name of another element is displayed!?
Is there anything I can do about it? Maybe automatically do a refresh on a suitable event? (I can't call DocumentController.refreshNodeReferences inside resolveReference since it results in a recursion).
I implemented my own ValidatingAuthorReferenceResolver class (derived from DITAConRefResolver) and need to use findNodesByXPath inside resolveReference. In priciple this works fine but when the reference is resolved for the first time (after adding the element to be resolved or modifying in in text mode and switching to author mode) the result is wrong. A refresh always resolves it but with the increasing use of this feature also the annoyance grows.
Here is a minimized sample:
Code: Select all
public boolean hasReferences(AuthorNode node) {
if (node.getName().equals("resolveReferenceTest")) return true;
return super.hasReferences(node);
}
@Override
public String getDisplayName(AuthorNode node) {
if (node.getName().equals("resolveReferenceTest")) return "resolveReferenceTest";
return super.getDisplayName(node);
}
@Override
public String getReferenceSystemID(AuthorNode node, AuthorAccess authorAccess) {
if (node.getName().equals("resolveReferenceTest")) return node.getXMLBaseURL().toExternalForm();
return super.getReferenceSystemID(node, authorAccess);
}
@Override
public String getReferenceUniqueID(AuthorNode node) {
if (node.getName().equals("resolveReferenceTest")) return "resolveReferenceTest";
return super.getReferenceUniqueID(node);
}
@Override
public SAXSource resolveReference(AuthorNode node, String systemID, AuthorAccess authorAccess, EntityResolver entityResolver) throws ReferenceResolverException {
if (node.getName().equals("resolveReferenceTest")) {
try {
AuthorNode[] results = authorAccess.getDocumentController().findNodesByXPath("parent::*", node, true, true, false, false);
if (results.length == 1) {
final String resultString = "<p>Parent: " + results[0].getDisplayName() + "</p>";
logger.info("resultString: " + resultString);
return new SAXSource(
authorAccess.getXMLUtilAccess().newNonValidatingXMLReader(),
new InputSource(new StringReader(resultString)));
} else {
throw new ReferenceResolverException("No parent", true, true);
}
} catch (AuthorOperationException e) {
throw new ReferenceResolverException(e.getMessage(), true, true);
}
}
return super.resolveReference(node, systemID, authorAccess, entityResolver);
}
@Override
public void checkTarget(AuthorNode node, AuthorDocument targetDocument) throws ValidatingReferenceResolverException {
if (node.getName().equals("resolveReferenceTest")) return;
super.checkTarget(node, targetDocument);
}Is there anything I can do about it? Maybe automatically do a refresh on a suitable event? (I can't call DocumentController.refreshNodeReferences inside resolveReference since it results in a recursion).