public void search(
String searchTerm, Set<Integer> categories, Set<String> languages, String sortBy) {
if (searcher == null) {
System.err.println("Searching before searcher was initialized.");
return;
}
// fetch from cache if searchterm is null
if (searchTerm == null) searchTerm = lastSearchTerm;
lastCategories = categories;
lastLanguages = languages;
lastSearchTerm = searchTerm;
lastSortBy = sortBy;
try {
lastResults = searcher.search(searchTerm, categories, languages);
lastResults = sortResults(lastResults, sortBy);
for (SearcherListener listener : listListeners) {
listener.onSearch(lastResults);
}
} catch (ParseException e) {
Alert.alert(MessageType.WARNING, "The search string is not valid.", window);
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private void init(final SyncWindow window) {
this.window = window;
final Path searchPath = FileSystems.getDefault().getPath("res", "pdfs");
Path indexPath = FileSystems.getDefault().getPath("res", "index");
IndexFactory factory = new MMapIndexFactory(indexPath);
searcher = new Searcher(factory, searchPath);
// check if index is built - build it if not
if (!searcher.indexExists()) {
System.out.println("Index is not built.");
IndexTask indexTask = new IndexTask(searcher, window);
TaskListener<Integer> taskListener =
new TaskListener<Integer>() {
@Override
public void taskExecuted(Task<Integer> task) {
if (task.getResult() != 0) {
System.out.println("Index built.");
// do first search on init to avoid index searcher caching overhead on user search
try {
searcher.search("piglet");
} catch (IOException | ParseException e) {
e.printStackTrace();
}
} else {
Alert.alert(
MessageType.ERROR,
"No pdf files found in \"" + searchPath.toAbsolutePath() + "\".",
window);
System.out.println("No files added to index.");
}
window.progress.setEnabled(false);
window.progress.setVisible(false);
}
@Override
public void executeFailed(Task<Integer> task) {
System.err.println(task.getFault());
}
};
indexTask.execute(new TaskAdapter<Integer>(taskListener));
}
}
