v2.5.0

Added

• Support for relational databases using JDBC.
• Parameter parallelism setting the maximum number of parallel operations.
• Script change-version.sh to update the version of RMLStreamer in required files.

Fixed

• Updated Function Agent to v1.1.0
• Updated GREL Functions to v0.9.1
• Updated IDLab Functions to v0.2.0
• Use <maven.compiler.release> property in pom.xml to set Java version to 11.
• Allow a relative path (to the working dir) as output directory when writing to file.
• Fixed bug in extracting namespaces from XML element (internal issue #161)

v2.4.2

Fixed

• The stand-alone docker image was based on a x86 architecture only. Now others are supported as well.

Changed

• Updated Function Agent to v0.2.1

v2.4.1

Added

• Possibility to run stand-alone, with Flink embedded.

Changed

• Updated Flink from version 1.14.4 to 1.14.5
• Updated Docker example

Fixed

• Passing omitting optional parameter function-descriptions resulted in program crash.
• Functions used on other levels than Predicate Map or Object Map caused RMLStreamer to crash
• Functions returning null no longer cause RMLStreamer logging an error message.
• Multiple values for same function argument (array) were not passed correctly to function

Full Changelog: v2.4.0...v2.4.1

Release 2.4.0

• Use of external FnO function handling component
• Use docker cp for copying files between Docker containers.
• Updated Flink from verion 1.14.0 to 1.14.4

Release 2.3.0 - RMLStreamer-SISO

Added

• Data stream joins using dynamic windowing

Release 2.2.2

Changed

• Updated Log4J from version 2.16.0 to 2.17.0 due to CVE-2021-45105.

Release 2.2.1

Changed

• Updated Log4J from version 2.15.0 to 2.16.0 due to CVE-2021-45046.

Release 2.2.0

Added

• Logical target compression for files: gzip, zip, xz.
• WebSocket support for Logical Source via WoT description.
• Added scopt dependency

Changed

• Updated Flink from version 1.12.3 to 1.14.0
• Updated SLF4J from version 1.7.26 to 1.7.32
• Updated Log4J from version 2.13.3 to 2.15.0
• Updated Jena from version 3.11.0 to 4.3.1
• Updated JayWay JsonPath from version 2.3.0 to 2.6.0
• Updated JsonSurfer Jackson from version 1.6.0 to 1.6.2
• Updated Moquette from version 0.13 to 0.15

Fixed

• Objects generated by functions with term type IRI were quoted, resulting in a wrong IRI.
  (GitHub issue #33, internal issue #140)
• Updated Log4J to a version protected against Log4Shell
  (Internal issue #146).

Release 2.1.1

Added

• Support for using Web of Things descriptions in logical soure and logical target, as described in Van Assche et al
  and Target in RML specification.
  The current imlementation is a proof-of-concept. As WoT data source RMLStreamer supports MQTT streams;
  as logical target a file dump is supported.

Changed

• Updated JsonSurfer from version 1.5.1 to 1.6.0
• Updated Flink from version 1.11.3 to 1.12.3

Fixed

• Function loading didn't always work because the toString method was called on the Uri to a function instead of
  the value method. (Internal issue #132).

Release 2.1.0

Added

• Support for functions on a per-record basis using the Function Ontology.

Changed

• Updated Flink from version 1.10.0 to 1.11.3
• Updated Kafka from version 2.2.2 to 2.4.1 (more versions supported using the universal connector)
• Updated VTD-XML from version 2.11 to 2.13.4

Removed

• Drop support for Java 8, only Java 11 supported.
• TCP PUSH support disabled: this code relies on development version of Apache Bahir.

Fixed

• Cyclic reference of parent triples maps leads to a stack overflow error (GitHub issue #19, Internal issue #108)
• In some cases not all triples maps were applied when joins (static-static and static-streams) are involved (fixed together with issue above).
• Writing to file when input streams are involved is now possible (See GitHub issue #8, internal issue #107).
• XML/XPath handling was erroneous (See GitHub issue #24, internal issue #124).