Question 1

How to install Yomu on Ubuntu with Java?

Accepted Answer

First, install Java using `apt-get install default-jre`, then add `gem 'yomu'` to your Gemfile and run `bundle install`. The README notes the JRE requirement, so ensure Java is available before gem installation.

Question 2

Yomu vs PDF::Reader for Ruby PDF parsing?

Accepted Answer

Yomu uses Apache Tika for PDFs, offering multi-format support but with Java overhead and potential performance lag. PDF::Reader is a native Ruby gem focused solely on PDFs, often faster and lighter but limited to that format.

Question 3

Can Yomu extract images from documents like PDFs?

Accepted Answer

The README only mentions text and metadata extraction; for image extraction, you'd need to check Apache Tika's capabilities directly, as Yomu may not expose all Tika features, requiring custom integration.

Question 4

How to handle corrupted files with Yomu?

Accepted Answer

Yomu may raise exceptions based on Tika's parsing errors; wrap calls in begin-rescue blocks and validate file integrity beforehand. Since it's a wrapper, error messages might be generic, so logging and fallback strategies are advisable.

Question 5

Is Yomu good for batch processing thousands of documents?

Accepted Answer

While functional, the Java integration can lead to high memory usage and slower processing; for large batches, consider performance testing and possibly using dedicated services or native libraries for specific formats.

Question 6

Yomu or Tika Server for a Ruby microservice?

Accepted Answer

Yomu bundles Tika as a jar, simplifying setup but with embedded limitations. Tika Server offers more scalability and control via HTTP API, but requires separate deployment and management, adding operational overhead.

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