MapFlattener

Convert nested Maps into flat Maps and then expand them back!

Easy to use

Create an instance of the MapFlattener class

MapFlattener mapFlattener = new MapFlattener();

By default, key concatenation uses dots, but you can override this like so

mapFlattener.withSeparator("$");

Now you can start flattening and expanding maps

// flatten it!
Map<String, Object> flattenedMap = mapFlattener.flattenMap(map);

// expand it!
Map<String, Object> map = mapFlattener.expandMap(flattenedMap);

Check out the tests for more examples

Pull it from Maven Central!

You can pull from the central maven repository, just add this to your pom.xml file's <dependencies> section:

<dependency>
    <groupId>com.nathanmyles</groupId>
    <artifactId>mapflattener</artifactId>
    <version>1.0</version>
</dependency>

License

This project is licensed under The Apache License, Version 2.0.