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Amazon open-sources Ion – a binary and text interchangable, typed JSON-superset

Amazon Ion Java

A Java implementation of the Ion data notation .

Setup

This repository contains a git submodule called ion-tests , which holds test data used by ion-java ‘s unit tests.

The easiest way to clone the ion-java repository and initialize its ion-tests submodule is to run the following command.

$ git clone --recursive https://github.com/amznlabs/ion-java.git ion-java 

Alternatively, the submodule may be initialized independently from the clone by running the following commands.

$ git submodule init $ git submodule update 

The submodule points to the tip of the branch of the ion-tests repository specified in ion-java ‘s .gitmodules file.

ion-java may now be built and installed into the local Maven repository with the following command.

$ mvn install 

Pulling in Upstream Changes

To pull upstream changes into ion-java , start with a simple git pull . This will pull in any changes to ion-java itself (including any changes to its .gitmodules file), but not any changes to the ion-tests submodule. To make sure the submodule is up-to-date, use the following command.

$ git submodule update --remote 

This will fetch and update the ion-tests submodule from the ion-tests branch currently specified in the .gitmodules file.

For detailed walkthroughs of git submodule usage, see the Git Tools documentation .

Depending on the Library

To start using ion-java in your code with Maven, insert the following dependency into your project’s pom.xml :

<dependency>   <groupId>software.amazon.ion</groupId>   <artifactId>ion-java</artifactId>   <version>1.0.0</version> </dependency> 

Using the Library

A great way to get started is to use the Ion cookbook . The API documentation will give a lot of detailed information about how to use the library.

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