/** {@inheritDoc} */
public void initialize(WikiEngine engine, Properties props)
throws NoRequiredPropertyException, IOException {
m_engine = engine;
m_luceneDirectory = engine.getWorkDir() + File.separator + LUCENE_DIR;
int initialDelay =
TextUtil.getIntegerProperty(props, PROP_LUCENE_INITIALDELAY, LuceneUpdater.INITIAL_DELAY);
int indexDelay =
TextUtil.getIntegerProperty(props, PROP_LUCENE_INDEXDELAY, LuceneUpdater.INDEX_DELAY);
m_analyzerClass = TextUtil.getStringProperty(props, PROP_LUCENE_ANALYZER, m_analyzerClass);
// FIXME: Just to be simple for now, we will do full reindex
// only if no files are in lucene directory.
File dir = new File(m_luceneDirectory);
log.info("Lucene enabled, cache will be in: " + dir.getAbsolutePath());
try {
if (!dir.exists()) {
dir.mkdirs();
}
if (!dir.exists() || !dir.canWrite() || !dir.canRead()) {
log.error("Cannot write to Lucene directory, disabling Lucene: " + dir.getAbsolutePath());
throw new IOException("Invalid Lucene directory.");
}
String[] filelist = dir.list();
if (filelist == null) {
throw new IOException(
"Invalid Lucene directory: cannot produce listing: " + dir.getAbsolutePath());
}
} catch (IOException e) {
log.error("Problem while creating Lucene index - not using Lucene.", e);
}
// Start the Lucene update thread, which waits first
// for a little while before starting to go through
// the Lucene "pages that need updating".
LuceneUpdater updater = new LuceneUpdater(m_engine, this, initialDelay, indexDelay);
updater.start();
}
/**
* Performs a full Lucene reindex, if necessary.
*
* @throws IOException If there's a problem during indexing
*/
protected void doFullLuceneReindex() throws IOException {
File dir = new File(m_luceneDirectory);
String[] filelist = dir.list();
if (filelist == null) {
throw new IOException(
"Invalid Lucene directory: cannot produce listing: " + dir.getAbsolutePath());
}
try {
if (filelist.length == 0) {
//
// No files? Reindex!
//
Date start = new Date();
IndexWriter writer = null;
log.info("Starting Lucene reindexing, this can take a couple minutes...");
Directory luceneDir = new SimpleFSDirectory(dir, null);
try {
writer = getIndexWriter(luceneDir);
Collection allPages = m_engine.getPageManager().getAllPages();
for (Iterator iterator = allPages.iterator(); iterator.hasNext(); ) {
WikiPage page = (WikiPage) iterator.next();
try {
String text =
m_engine
.getPageManager()
.getPageText(page.getName(), WikiProvider.LATEST_VERSION);
luceneIndexPage(page, text, writer);
} catch (IOException e) {
log.warn("Unable to index page " + page.getName() + ", continuing to next ", e);
}
}
Collection allAttachments = m_engine.getAttachmentManager().getAllAttachments();
for (Iterator iterator = allAttachments.iterator(); iterator.hasNext(); ) {
Attachment att = (Attachment) iterator.next();
try {
String text = getAttachmentContent(att.getName(), WikiProvider.LATEST_VERSION);
luceneIndexPage(att, text, writer);
} catch (IOException e) {
log.warn("Unable to index attachment " + att.getName() + ", continuing to next", e);
}
}
} finally {
close(writer);
}
Date end = new Date();
log.info(
"Full Lucene index finished in "
+ (end.getTime() - start.getTime())
+ " milliseconds.");
} else {
log.info("Files found in Lucene directory, not reindexing.");
}
} catch (NoClassDefFoundError e) {
log.info("Lucene libraries do not exist - not using Lucene.");
} catch (IOException e) {
log.error("Problem while creating Lucene index - not using Lucene.", e);
} catch (ProviderException e) {
log.error("Problem reading pages while creating Lucene index (JSPWiki won't start.)", e);
throw new IllegalArgumentException("unable to create Lucene index");
} catch (Exception e) {
log.error("Unable to start lucene", e);
}
}