Apache Daffodil (incubating)
Apache Daffodil (incubating) is the open source implementation of the Data Format Description Language (DFDL), a specification created by the Open Grid Forum. DFDL is capable of describing many data formats, including textual and binary, commercial record-oriented, scientific and numeric, modern and legacy, and many industry standards. It leverages XML technology and concepts, using a subset of W3C XML schema type system and annotations to describe such data. Daffodil uses this description to parse data into an infoset represented as XML or JSON, easily capable of ingestion, validation, and transformation.
For more information about Daffodil, see https://daffodil.apache.org/.
- JDK 7 or higher
- SBT 0.13.8 or higher
SBT is the officially supported tool to build Daffodil, run all tests, create packages, and more. Below are some of the more common commands used for Daffodil development.
Note that compiling and running all Daffodil tests works best with at least 6GB of memory, more than is usually provided by default. We recommended that you supply
-mem 6144either as an sbt option (e.g.
sbt -mem 6144 test) or edit
/etc/sbt/sbtoptsto increase the available memory when running the below commands.
$ sbt compile
The following command runs all unit tests.
$ sbt test
The following command runs all command line interface tests.
$ sbt it:test
Command Line Interface
The following command creates Linux and Windows shell scripts in
daffodil-cli/target/universal/stage/bin/. See the Command Line Interface documentation for details on its usage.
$ sbt daffodil-cli/stage
This following command generates an Apache RAT report in
target/rat.txt and errors if any unapproved licenses are found.
$ sbt ratCheck
Daffodil is licensed under the Apache License, v2.0