/**
* Process index terms.
*
* @param theInput input document
* @return read index terms
* @throws ProcessException if processing index terms failed
*/
public IndexPreprocessResult process(final Document theInput) throws ProcessException {
final DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = null;
try {
documentBuilder = documentBuilderFactory.newDocumentBuilder();
} catch (final ParserConfigurationException e) {
throw new RuntimeException("Unable to create a document builder: " + e.getMessage(), e);
}
final Document doc = documentBuilder.newDocument();
final Node rootElement = theInput.getDocumentElement();
final ArrayList<IndexEntry> indexes = new ArrayList<IndexEntry>();
final IndexEntryFoundListener listener =
new IndexEntryFoundListener() {
public void foundEntry(final IndexEntry theEntry) {
indexes.add(theEntry);
}
};
final Node node = processCurrNode(rootElement, doc, listener)[0];
doc.appendChild(node);
doc.getDocumentElement().setAttribute(XMLNS_ATTRIBUTE + ":" + this.prefix, this.namespace_url);
return new IndexPreprocessResult(doc, (IndexEntry[]) indexes.toArray(new IndexEntry[0]));
}
public void createAndAddIndexGroups(
final IndexEntry[] theIndexEntries,
final IndexConfiguration theConfiguration,
final Document theDocument,
final Locale theLocale) {
final IndexComparator indexEntryComparator = new IndexComparator(theLocale);
final IndexGroup[] indexGroups =
indexGroupProcessor.process(theIndexEntries, theConfiguration, theLocale);
final Element rootElement = theDocument.getDocumentElement();
final Element indexGroupsElement = theDocument.createElementNS(namespace_url, "index.groups");
indexGroupsElement.setPrefix(prefix);
for (final IndexGroup group : indexGroups) {
// Create group element
final Node groupElement = theDocument.createElementNS(namespace_url, "index.group");
groupElement.setPrefix(prefix);
// Create group label element and index entry childs
final Element groupLabelElement = theDocument.createElementNS(namespace_url, "label");
groupLabelElement.setPrefix(prefix);
groupLabelElement.appendChild(theDocument.createTextNode(group.getLabel()));
groupElement.appendChild(groupLabelElement);
final Node[] entryNodes =
transformToNodes(group.getEntries(), theDocument, indexEntryComparator);
for (final Node entryNode : entryNodes) {
groupElement.appendChild(entryNode);
}
indexGroupsElement.appendChild(groupElement);
}
rootElement.appendChild(indexGroupsElement);
}