Apache Daffodil 4.2.0

<dependency>
  <groupId>org.apache.daffodil</groupId>
  <artifactId>daffodil-core_3</artifactId>
  <version>4.2.0</version>
</dependency>

libraryDependencies += "org.apache.daffodil" %% "daffodil-core" % "4.2.0"

[apache-daffodil]
name=Apache Daffodil
baseurl=https://apache.jfrog.io/artifactory/daffodil-rpm/
enabled=1
gpgkey=https://downloads.apache.org/daffodil/KEYS
gpgcheck=1
repo_gpgcheck=0

sudo dnf install apache-daffodil

Release Notes

This release focused on bugs fixed and performance improvements. A number of changes resulted in deprecation or backwards incompatible changes. See Deprecation/Compatibility section for more details.

This release requires Java 17 or newer, and Scala 3.3.x. It was tested with Java 17, 21, and 25, and Scala 3.3.7. We recommend Java 25 for the best performance.

New Features

Of note is the addition of a new infosetWalkerMode property that can be used provide performance improvements in some schemas that aren't very large. Note that in cases of large infosets or if memory is a concern, the default infosetWalkerMode of "streaming" should be used.

• [DAFFODIL-182] - option for having xsi:type added to infoset
• [DAFFODIL-3070] - Support non-streaming InfosetWalker
• [DAFFODIL-3082] - Make GZIP layer compression level configurable

Miscellaneous Bugs/Improvements

• [DAFFODIL-1598] - Unparser: For strings that truncate, the dfdl:valueLength function cannot suspend
• [DAFFODIL-3068] - SonarCloud Scan Unable to import Scoverage report files
• [DAFFODIL-3072] - Float/double -0.0 leads to incorrect validation errors with daffodil validation
• [DAFFODIL-3073] - Use of varargs in serialized classes can lead to reload incompatibilities
• [DAFFODIL-3074] - stringAsXML always creates empty elements
• [DAFFODIL-3075] - FuzzData in core catching the wrong Exception
• [DAFFODIL-3077] - XMLUtils comparison relies on specific ICU versions
• [DAFFODIL-3078] - TDML Runner XML differences output twice
• [DAFFODIL-3079] - Saving schema leads to "Invariant broken. No value for delay. Containing object not initialized?"
• [DAFFODIL-3081] - Configure codecov to not fail on master branch merges
• [DAFFODIL-3083] - Update deprecated URL constructor in XercesValidator
• [DAFFODIL-3086] - Remove Fractional Microseconds support from TDML Runner
• [DAFFODIL-2909] - stringAsXML: TDML XML Comparison fails on mixed content XML or other non-DFDL-conforming XML
• [DAFFODIL-3027] - Compare Daffodil Performance on Java 17 and 25
• [DAFFODIL-3071] - Remove retrievedManaged/useCoursier Settings
• [DAFFODIL-3089] - Set default infosetWalkerMode to "streaming"

Deprecation/Compatibility

• [DAFFODIL-2909] - stringAsXML: TDML XML Comparison fails on mixed content XML or other non-DFDL-conforming XML

  Previous versions of Daffodil used the ScalaXMLInfosetInputter/Outputter as the default inputter/outputter for TDML Runner, this version changed it to XMLTextInfosetInputter/Outputter since it supports the stringsAsXml feature. Note that for this implementation, we check the actual infoset for the presence of XMLTextInfoset.stringAsXML (currently stringAsXML) and don't normalize CRLF to LF for that element

• [DAFFODIL-182] - option for having xsi:type added to infoset

  Previous versions of Daffodil could sometimes use scientific notation when outputting elements with an xs:decimal type, which XSD does not allow. Daffodil now always outputs xs:decimal types using standard decimal notation without any exponent part.

Dependency Changes

The following dependencies have been added, updated, or removed:

Core

• Apache Commons IO 2.22.0 (update)
• ICU4J 78.3 (update)
• SLF4J 2.0.18 (update)
• FasterXML Woodstox Core 7.2.1 (update)

Code Generation

• OS Lib 0.11.8 (update)

Command Line Interface

• JLine 4.2.1 (update)

Schematron Validator

• Saxon-HE 13.0 (update)