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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

Unreleased

7.1.0 - 2024-08-13

Added

  • Serialization format TriG is now supported for Logical Targets (fixes GitHub issue 225).

Fixed

  • Crash when null is returned in an XPath function for subject generation (fixes GitHub issue 236)
  • Update to DataIO 1.3.1: DATAIO_NULL value occurring in RDF output when CSV quoted string has newline character in it (fixes GitHub issue 238)
  • RML Test report script: remove newlines from R2RML targ name

7.0.0 - 2024-06-07

Fixed

  • Gitlab CI R2RML test cases compliance
  • Gitlab CI Maven Central retrying on failure due to Maven Central server problems
  • Gitlab CI Docker Hub deployment fixed
  • Update DataIO dependency to 1.1.0 (fixes GitLab issue 274)
  • R2RML Test Report CI script failed in development due to missing pip parameter.
  • Optimization for self-joins without join conditions (fixes Gitlab issue 275)
  • Optimization for self joins with join condition.
  • Updated junit to 5.10.0
  • Updated jena to 4.9.0
  • Updated testcontainers to 1.18.3
  • Added explicit dependency on json-smart, since it was an indirect dependency which changed scope
  • Updated idlab-functions-java to 1.3.2, fixing an issue with IncRML
  • Updated dataio to 1.2.0
  • Changed scope of json-path dependency to runtime

Changed

Added

  • Translation to new RML. Only for Core.

6.5.1 - 2023-12-06

Fixed

  • Upgrade logback-classic to 1.4.14.
  • Upgrade wiremock-jre8 to 2.35.1.

6.5.0 - 2023-12-06

Changed

  • Update dependency on idlab-functions-java to 1.3.1. This implies three things:
    • The namespace for IDLab functions FnO descriptions changed, so RMLMapper loads the old and the new one to remain compatible;
    • All tests in RMLMapper use the new namespace;
    • Stateful functions use a more compact and efficient state.
  • Update dependency on function-agent-java to 1.2.0, the first version released on Maven Central.
  • Upgraded rdf4j-client dependency to version 4.3.8
  • Compile regex patterns for RDF4J store only once for performance.

Fixed

  • Setting option disable-automatic-eof-marker in a configuration file has no effect (see GitLab issue #269).
  • Start adhering to Keep a Changelog from now on (Improvements -> Changed).
  • Compatibility issue with old IDLab functions FnO descriptions (see GitLab issue #270)

Added

  • Test case for working with CSV logical sources without header.

[6.4.0] - 2023-11-14

Added

  • Test handling Windows CRLF line ending for CSV files (issue #201)
  • Added test for empty column handling in csv logical source files (issue #159)

Improvements

  • Tests: let Java handle temporary files.
  • pom: upgrade maven-surefire-plugin to 3.2.2
  • pom: upgrade nexus-staging-maven-plugin to 1.6.13
  • pom: upgrade json-path to 2.8.0
  • pom: upgrade logback-classic to 1.4.11
  • resources: rml-ldes: avoid symlinks
  • pom: upgrade RDB connectors (postgresql 42.6.0, mssql-jdbc 12.4.2.jre11, ojdbc11 23.3.0.23.09, mysql-connector-j 8.2.0)

Changed

  • Use the DataIO library to handle access to files.
  • Requires Java 17 language level.
  • Refactoring to use interfaces where possible (e.g. ArrayList -> List).

Fixed

  • Test cases: add array initializers to avoid bugs.
  • Use correct prefix for EventStreamTargets in tests.
  • Refactoring of Executor: code deduplication
  • Document --disable-automatic-eof-marker option.

6.3.0 - 2023-11-14

Improvements

  • Add support for detecting additions, modifications, and deletions in a Knowledge Graph with FnO functions.
  • Verify LDES EventStreamTarget output for additions, modifications, and deletions.
  • Added RML-LDES test-cases.
  • Added test for mapping with CSV file where column does not match header

Changed

  • Build Docker image in two stages, reducing the final image size.
  • LDES EventStreamTarget properties are now all optional.
  • Removed usage of legacy RDF model, using RDF4J instead.

Fixed

  • Don't close output streams that don't need closing.
  • Add url decoders to file paths so special characters and spaces work.
  • Test cases: add array initializers to avoid bugs.

6.2.2 - 2023-10-05

Fixed

  • Fixed self-joins with join conditions (internal issue #199)
  • Upgrade to rdfhdt to 3.0.10 (issue #215)
  • Improve docs on deduplication (issue #214)
  • Handle plain old Java Arrays as well for FnO return values
  • Update dependency to idlab-functions-java, fixing issue #218

Changed

  • Dockerfile: switched to Eclipse OpenJDK Docker base image because OpenJDK is deprecated
  • CI: dropped GitHub release automation
  • CI: verify if token is valid

Improvements

  • Heavily increased performance of RMLMapper through several optimizations

6.2.1 - 2023-07-06

Fixed

  • Updated idlab-functions-java to v1.0.0
  • CSVW 1025 testcase now reads correct logical source

6.2.0 - 2023-06-22

Fixed

  • Updated function-agent-java to v1.1.0
  • Updated grel-functions-java to v0.9.1
  • Updated idlab-functions-java to v0.3.1
  • Updated junit to 5.9.1
  • Updated testcontainers to 1.17.6
  • Updated logback to 1.4.5
  • Updated Saxon-HE to 11.4
  • Updated postgresql to 42.5.1
  • Detect non existing files early (issue 223)
  • Subject of LDES event stream has wrong IRI (internal GitLab issue #253)
  • MS SQLServer JDBC driver was only for tests on classpath (internal GitLab issue #255)
  • Normalising Double numbers from RDBs went wrong (internal GitLab issue #256, GitHub issue #206)

Changed

  • tree:view and ldes:retentionPolicy are omitted when generating LDES metadata.

Added

  • A new Maven profile no-buildnumber disables using and updating buildNumber.properties.
  • Mocked DBpedia Spotlight service (issue #250)
  • Update dynamic-loading in README.md

6.1.3 - 2022-12-20

Fixed

  • Reraise execeptions from executor, so that CLI exits with non-zero exit code in the event of errors in execution (issue 194)

6.1.2 - 2022-11-22

6.1.1 - 2022-11-21

6.1.0 - 2022-11-21

Changed

  • Require Java 11+
  • Port all tests to Junit 5
  • Database tests are executed with a fresh instance of the required database in a Docker container
  • Update of function libraries IDLab functions, GREL functions, Function Agent
  • Removed need for (deprecated) SecurityManager

Fixed

  • Dropped dependency on Guava
  • Dropped explicit dependency on Jetty
  • Dropped dependency on mariaDB4j
  • RDF4JStore had wrong regex to check for Literals when they have a language tag or data type.
  • Updated RDF4J to 4.2.1
  • Updated Jena to 4.6.1
  • Updated indirect dependencies to Xerces 2.12.2
  • Updated mysql-connector-java to 8.0.31
  • Updated postgresql to 42.5.0
  • Updated mssql-jdbc to 11.2.1.jre11
  • Updated com.fasterxml.jackson.core.* dependencies to 2.14.0
  • Updated jsoup to 1.15.3
  • Updated opencsv to 5.7.1
  • Updated poi-ooxml to 5.2.3
  • Updated testcontainers to 1.17.5
  • Updated mybatis to 3.5.11
  • Updated ojdbc8 21.6.0.0.1 to ojdbc11 21.7.0.0
  • Force Wiremock to use commons-fileupload 1.4
  • Main: Output paths can again be fully relative
  • Dropped dependency on com.spotify.docker-client (issue 231)
  • Running multiple pipelines should no longer interfere with each other (issue 245)
  • Fixed TriplesMaps detection of MappingConformer issue 251
  • NamedNodeGenerator now checks if the given IRI is valid (issue 249)

Added

  • pom.xml: Added Testcontainers library dependencies for databases we test on
  • pom.xml: Added JUnit5 dependencies
  • Check for changelog changes in a separate lint stage during CI.

6.0.0 - 2022-07-04

Changed

  • Run all tests in parallel on CI infrastructure
  • Upgrade Function Agent to v0.1.0

Fixed

  • Upgrade postgresql JDBC driver to 42.3.3
  • Rename logback.xml to logback-test.xml in test resources (see issue 240)
  • If exception occurs while mapping data, already processed data gets written to output file
  • Properly close resources such as input streams
  • Github release notes are now properly extracted
  • Discard UTF Byte-Order-Marks (BOM) (see issue 171)
  • Dropped lib directory for functions as we now use a separate FnO Function Agent

Added

  • IDLabFunctions: added functions lookup and lookupWithDelimiter
  • IDLabFunctionsTest: added unit tests for lookup functions
  • IDLabFunctionsTest: relocate csv files used by tests for lookup function
  • IDLabFunctions: silence stack trace
  • CSVW: filter out rows with a comment prefix
  • Output file path now gets checked before the mapping
  • .gitignore: ignore vscode files
  • pom.xml: add Saxon-HE v11.3 dependency
  • XMLRecord: adjusted to use Saxon
  • XMLRecordFactory: adjusted to use Saxon
  • SaxNamespaceResolver: added class for resolving namespaces in Saxon. This fixes (#154)[#154].
  • Added unit tests for XPath 2/3 expressions and functions
  • Loggers across the codebase have been updated to use parameterized strings
  • Add support for WoT OAuth2 Security Scheme (see issue 212)
  • Integration of independent function handler

5.0.0 - 2022-03-11

  • TestCore: enable debug logs when VERBOSE env variable is set (see issue 230)
  • Switched to fork of ODFtoolkit (see issue 237)

Added

  • Add support for LDES Logical Target
  • Add support for generating unique reproducible IRIs for LDES

Changed

  • Write LDES state to disk when mapping execution is complete.
  • Removed deprecated execute() and executeWithFunction() methods, and refactored the executeV5() executeWithFunctionV5() method to execute() and executeWithFunction().

Fixed

  • Clarified Readme for quick start
  • No cartesian product when referring to the same logical source (see issue 28])
    • If you still want the cartesian product, update your mappings to refer to different logical sources with the same contents
  • Upgraded jetty-server and jetty-security to 9.4.44.v20210927
  • Upgraded wiremock-jre8 to 2.32.0
  • Upgraded ch.qos.logback to 1.2.10
  • Upgraded commons-cli to 1.5.0
  • Upgraded com.jayway.jsonpath to 2.7.0
  • Upgraded ch.vorburger.mariaDB4j to 2.5.3
  • Upgraded com.microsoft.sqlserver to 10.2.0.jre8
  • Upgraded com.fasterxml.jackson.core to 2.13.1
  • Upgraded org.jsoup to 1.14.3
  • Upgraded org.apache.poi to 5.0.0
  • Resources: functions_grel: use xsd:integer (see issue 234)
  • Print error if referenceformulation is unsupported

Changed

  • Upgrade postgresql JDBC driver to 42.3.2 (see issue 146)

4.15.0 - 2022-02-01

Fixed

  • Bump buildnumber during release (see issue 227)
  • Always include xml: prefix (see issue 144)
  • normalizeDate function uses wrong pattern (see issue 228)
  • CI: only publish -all.jar releases on Github (see issue 145)
  • CI: make use of templates

Changed

  • CSVRecordFactory: Replace Apache CSV library with OpenCSV to be able to differentiate between empty string and null (see issue 140)
  • CI: use Gitlab's own mirror feature instead of mirroring in a CI job.
  • CI: enforce CHANGELOG updates.
  • Added functions to normalize dates and datetimes.

Added

  • JSONRecordFactory: support JSONL files (see issue 221).

4.14.3 - 2022-01-13

Fixed

  • Github CLI needs to specify a repo to create a release.

4.14.2 - 2022-01-13

Fixed

  • Maven Central automatic builds fixed.
  • Upstream R2RML test cases.
  • Correctly install Github CLI in CI.

4.14.1 - 2022-01-13

Fixed

  • Mirror development branch to Github when releasing new versions.
  • Github Release stage works now properly.
  • Build newer version during deployment.

4.14.0 - 2022-01-13

Added

  • Mapper_Postgres_CSV_Test: Add test RMLTC1027 to check whether NULLs are ignored in PostgreSQL (see issue 159)
  • IDLabFunctions: add isNull function (see issue 219).
  • Replaced PowerMock with WireMock (see issue 45)
  • FunctionModel: Change the way Lists are processed to take into account generic types
  • CSVW: Add support for csvw:null (see issue 217)
  • FnO: improve error messages for incomplete descriptions (see issue 222)
  • CSVW: Ignore nulls instead of removing (see issue 224)

Fixed

  • Update RELEASE.md with up-to-date notes for releasing new versions (see issue 218).
  • RELEASE: Fixed Maven Central deployment instructions (see issue 223)
  • AccessFactory: Do not clean SPARQL queries by default (see issue 214)

4.13.0 - 2021-11-22

Fixed

  • update dependencies
  • cleaned up code
  • fixed undefined prefixes
  • CI: fix MS SQL Server docker image name
  • pom: mark Jena, Docker, Jetty and Fuseki as test dependencies (see issue 127)
  • XMLRecord: fallback to STRING if NODESET fails (see issue 128)
  • Tests: Updated RML test-cases 0002i and 0003a to no longer expect an error. (see issue 130)
  • Tests: Added test case 0002k where no sqlVersion is present, as its presence is not mandatory.
  • README: mention RML questions repository (see issue 216)
  • XML parsing: allow parsing of fully namespaced xml by injecting xml source's namespaces in the XPath compiler (see issue 134)
  • R2RML: No longer add sqlVersion 2008, as its presence is not mandatory.
  • CSVRecordFactory: allow empty column names (see issue 124)

Added

  • Main: add piping support of mapping rules (see issue 124)
  • Logging: Log loaded functions when in verbose mode (see issue 136)
  • Mapper_MySQL_R2RML_Test: Add information regarding non-compliance of MySQL for certain tests cases (see issue 189)
  • Tests: Add test RMLTC1027 to check whether NULLs are ignored properly for various data sources (see issue 159)

4.12.0 - 2021-08-02

Fixed

  • R2RML: floating point differences between RDBs (see issue 203)
  • R2RML: do not percent-encode binary data (see issue 184)
  • R2RML: handle binary data differences between RDBs (see issue 200)
  • Create an empty output file for empty JSON arrays as well (see issue 98)
  • Always output UTF-8 encoded RDF (see issue 119)
  • Refactor RDB records for better NULL and empty string handling (see issue 131)
  • Align R2RML test cases with kg-construct/r2rml-test-cases (see issue 211)

Added

  • FunctionLoader: throw error on missing function parameters (see issue 125)
  • HTMLRecordFactory: add CSS3 selector support (see issue 52)
  • CSVRecordFactory: add spreadsheet support (see issue 42)
  • IDLabFunctions: add slugify to default idlab-fn functions (see issue 209)
  • RDBAccess: add XML support for PostgreSQL RDB (see issue 51)
  • AccessFactory: add WoT BearerSecurity scheme (see issue 195)
  • README: add clarification on where to find standalone release jars (see issue 174)

4.11.0 - 2021-07-05

Added

  • R2RML test cases (see issue 192)
  • DCAT support

Fixed

  • R2RML support: handle booleans correctly (see issue 187)
  • W3C Formats Namespace: use http instead of https

4.10.1 - 2021-06-15

Fixed

  • README Markdown rendering and links
  • Follow HTTP redirects for Web APIs (see issue 196)

4.10.0 - 2021-05-05

Added

  • Added support for named graphs in RDFJStore.
  • Support for Logical Target and exporting to a local file with various serializations and compression, or a SPARQL endpoint using SPARQL UPDATE queries.
  • W3C Web of Things Web API access support to retrieve data from Web API with token authentication.

Changed

  • Use RDF4JStore by default (see issue 108).
  • Public API of the Executor has been updated and is available under <method>V5, the old API is still available but deprecated. In a future release, the old API will be removed and the new one will drop the V5 suffix.

Fixed

  • Add remark about duplicate removal and serialization format performance (see issue 108).
  • Treat empty values in CSV columns as NULL values in RDBs (see issue 188).
  • Fixed reloading the function every iteration, hopefully this gives a speed boost
  • Fix R2RML conversion of multiple Triples Maps (see issue 186).
  • Fix datatype retrieval when RDB colum names are quoted (see issue 185).

4.9.4 - 2021-03-19

Changed

  • Link to our Docker images on Dockerhub in README (see issue 109)

Fixed

  • Support @ in JSONPath (see issue 178)
  • JSONRecord: ignore 'null' values in JSONArray as well (see issue 103)

4.9.3 - 2021-03-05

Fixed

  • Docker build (see issue 106)
  • Consistent builds with Maven

4.9.2 - 2021-03-04

Changed

  • Endpoints of Oracle and DBpedia Spotlight for tests
  • getColumnLabel instead of getColumnName (see issue 92)
  • Updated dependencies
    • added FnO Grel v0.6.1 which adds toTitlecase, lastIndexOfMapping, sha1, md5

Fixed

  • support SQL queries that have unnamed columns

Added

  • Add Logical Target support
  • Add Web of Things support
  • Add compression support

4.9.1 - 2020-12-04

Added

  • Support commas in JSONPath

Fixed

  • Handling of boolean/any FnO parameters (see MR 116)
  • Print descriptive error when mapping file does not exist or is invalid Turtle (see Github issue 54)
  • Print mapping file path as debug instead of a warning (see issue 172)

4.9.0 - 2020-09-14

Added

Fixed

  • Fix CSVW with tab (see issues 168 and 169)

4.8.2 - 2020-08-17

Added

  • Support function on SubjectMap that generates blank nodes (see issue 167)

Changed

  • Updated licenses on the README

Fixed

  • Documentation updated to reflect metadata generation
  • Function objects with types other than String/Boolean don't get discarded (see issue 165)
  • Generating metadata in different RDF format (see issue 68)

4.8.1 - 2020-07-03

Changed

  • updated grel-functions-java to 0.5.2

Fixed

  • ObjectMap with type Blank Node is ignored (see issue 164)
  • Support double quotes in references of RDBs (see issue 163)

4.8.0 - 2020-05-25

Added

  • Oracle driver information in README (see issue 142)
  • Support Oracle databases (see issue 160)

Changed

  • Functions support more datatypes: be/ugent/rml/functions/FunctionUtils.java

Removed

4.7.0 - 2020-03-09

Added

  • support for list-style parameter arguments for functions (see test rml-fno-test-cases/RMLFNOTC0023-CSV)

Changed

  • conform with latest https://fno.io spec
    • the old way of describing a link to a JAVA library is currently still supported
  • usage of external GREL functions library
    • by default, these classes are loaded, even when the function file parameter has another file
    • moved some functions to IDLabFunctions
  • FunctionLoader takes a store as constructor, not a file
  • for now, allow fallback on old FnO IRIs
  • dynamic function libraries (i.e., jars) are found relative to the cwd
  • renamed Utils::getInputStreamFromMOptionValue to Utils::getInputStreamFromFileOrContentString
  • changed URL of remote data file src/test/resources/test-cases/RMLTC1003-CSV/mapping.ttl
  • moved IDLabFunction tests to its canonical place
  • added idlab-fn:inRange function
  • in TestFunctionCore: doPreloadMapping just adds up to the existing functions_idlab.ttl descriptions to avoid duplication
    • random generator defaults to "random_string_here" to avoid space characters.

4.6.0 - 2019-11-19

Added

  • R2RML support

Changed

  • QuadFactory (removes need for explicit RDF4J store)
  • SQLTestCore created, used between RML SQL tests and R2RML tests

Fixed

  • Username without password is possible
  • Completed prefixes in some test mappings
  • Generation of blank nodes via Object Maps
  • FnO IRI

4.5.1 - 2019-09-04

Fixed

  • Absolute paths for data source files

4.5.0 - 2019-08-06

Added

  • Support for rml:languageMap (see issue 9 of the RML Test cases)

Fixed

4.4.2 - 2019-07-15

Added

  • Configure no-response bot for Github (issue 35)
  • Dockerfile
  • Add table of contents to README
  • Refactor data access and records
  • Test case for CSV with special characters

Fixed

  • Base IRI is read from the mapping doc when using CLI

4.4.1 - 2019-06-17

Added

  • Javadoc generation

Fixed

  • A file that is mentioned multiple times in the mapping doc is not re-read multiple times
  • Turtle output contains datatypes and languages

4.4.0 - 2019-05-16

Added

  • support for CSVW
  • Support for combining multiple mappings files

Changed

  • Print function-file path when doing verbose debugging

Fixed

  • FileNotFoundException: actually show which file wasn't found
  • Non-conforming language tags are detected

4.3.3 - 2019-03-15

Added

  • Non-equals function and getMimeType function
  • LICENSE file (MIT) (fixes #25)

Fixed

  • rdf prefix in some test cases
  • specified turtle output in cli help and readme (fixes #23)

4.3.2 - 2019-02-27

Added

  • DBpedia spotlight can be used as a default NER function within a mapping document
  • functions added, to be used for conditions

Fixed

  • updated UML diagrams
  • fixed #21 (thanks @mariapoveda)
  • support for -- and updates of -- a whole lot more test cases
  • Transform data from databases according to their datatypes, where applicable
  • Works with @base in mapping
  • Use Exception instead of Error (almost everywhere)
  • Validate URI
  • rml:query instead of rr:query
  • maven dependency before jitpack dependency to prevent json-ld conflict (#19 thanks @duschu)

4.3.1 - 2019-01-15

Fixed

  • filtering of quads in SimpleQuadStore

4.3.0 - 2018-12-17

Added

  • SPARQL endpoint support

Changed

  • rdf4j version bump to 2.4.1

4.2.0 - 2018-11-14

Added

  • support for SPARQL
  • output format: hdt

Fixed

  • local build on Windows 7 works
  • object with template with an array as input ? return multiple objects

4.1.0 - 2018-10-15

Added

  • output formats: turtle, trig, trix, jsonld
  • functions with list input
  • metadata generation

Changed

  • use environment variable for RDB testing
  • all (including templating) works with function generators

Fixed

  • double join condition
  • support quote in literal
  • function file path not passed on to the function loader when using the CLI
  • when parsing a string into an RDF term, take into account @ is not always a language tag
  • parenttriplesmap handling null values
  • config file

4.0.0 - 2018-09-03

Added

  • support for config file
  • no difference between triples and quads when writing output to file

0.2.1 - 2018-08-14

Fixed

  • Create valid temp file for prepackaged functions jars
  • Use GrelProcessor.class by default instead of GrelFunctions.jar

0.2.0 - 2018-08-09

Added

  • support for functions on Predicate Maps
  • support for functions on Graph Maps
  • support for relational databases (MySQL, PostgreSQL, and SQLServer)

0.1.6 - 2018-08-07

Fixed

  • If no valid graph IRI could be generate, add triple to default graph instead of crashing

0.1.5 - 2018-08-06

Fixed

  • Correct printing of predicates of quads

0.1.4 - 2018-07-16

Fixed

  • Content negotiation done right

0.1.3 - 2018-07-16

Fixed

  • If JSONPath gives a null, just don't create a triple instead of crashing

0.1.2 - 2018-07-02

Fixed

  • getting a resource file doesn't give null pointer exception when using the packaged jar

0.1.1 - 2018-07-02

Fixed

  • outputting quads in stdout correctly

0.1.0 - 2018-07-02

Added

  • support for accessing CSV data sources
  • support for accessing JSON data sources with JSONPath
  • support for accessing XML data sources with XPath
  • support for accessing local files
  • support for accessing remote files (via HTTP GET)
  • basic support for functions