funstaff_tika:
    tika_path:       /path/to/tika-app-1.0.jar
    output_format:   ~  # default: xml
    output_encoding: ~  # default: UTF-8
    logging:         ~  # Use the Symfony2 default. Force the logging with this param.

$tika = $this->get('funstaff.tika')
        ->setOutputFormat('text')
        ->addDocument('foo', '/path/to/foo')
        ->extractContent();

$tika = $this->get('funstaff.tika')
        ...
        ->extractMetadata();

$tika = $this->get('funstaff.tika')
        ...
        ->extractAll();

foreach ($tika->getDocuments() as $document) {
    $content = $document->getContent();
    $metadata = $document->getMetadata();
    $author = $metadata->get('Author');
}