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Clojure Extended: Java interop

Ivan Grishaev

Get the power of the Java platform in Clojure projects. Theory plus five practical chapters borrowed from real business tasks

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About

About

About the Book

This paper is focused on one narrow theme: how to use Java capabilities in Clojure. There are plenty of tutorials and books about Clojure so far, but most of them consider their readers as new ones in programming. There is no room for extended topics as the result.

Java interop is one of such topics. You will learn how to reuse proven Java libraries to get the results quickly. We will go through several business cases. In each of them, you are going to solve a problem by writing Clojure code that relies on Java capabilities. All the cases are real and borrowed from the projects I've been worked on personally.

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ClojureJavaFunctional Programming

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Author

About the Author

Ivan Grishaev

An IT engineer enjoys Clojure and Lisp-family languages. Run my blog on both English and Russian. Do winter sports. A father of two. Russia, Voronezh.

Contents

Table of Contents

Introduction

  1. Two answers
  2. Reusing Java code
  3. IO capabilities
  4. Source code problems
  5. Your career growth
  6. What is that book about
  7. The structure

Java interoperability basics

  1. Importing classes
  2. How to initiate an object
  3. Static methods
  4. Object methods
  5. Nested classes
  6. Universal Java access
  7. Reflection
  8. Rest Java arguments
  9. Type hints
  10. Best practices
  11. Conclusion

Parsing User-Agent header

  1. Meet UA Detector
  2. Setting up a namespace
  3. To Clojure recursive pattern
  4. Processing nested objects
  5. The final view
  6. Conclusion

Sanitizing HTML

  1. The problem of raw HTML
  2. First steps with Jsoup
  3. Custom sanitizing logic
  4. Dealing with Iframes
  5. Conclusion

Boosting up your JDBC driver

  1. Setting up the database
  2. Testing DB from Clojure
  3. Basic Java types
  4. Dealing with enumeration types
  5. Meet database json(b) types
  6. Connecting json(b) with Clojure
  7. Theory of database arrays
  8. Practising with arrays
  9. Conclusion

IO Pipeline

  1. The task briefing
  2. Technical proposal
  3. Preparing a draft
  4. Building IO pipeline
  5. Save the results
  6. Conclusion

Processes and Browser automation

  1. What is a Webdriver
  2. Obtaining a Webderiver
  3. Manage a process in Clojure
  4. Starting the server
  5. Play with Webdriver API
  6. Getting down the process
  7. Conclusion
  8. Summary

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