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Changelog

[0.15.0] - 2021-08-11

  • added WMEToJSON-Converters to support new json-explanation feature in rete

[0.14.0] - 2021-06-28

  • create temporary (i.e., non-persistent) entities with Entity::createTemporary
  • added EC<Component> to UtilBuildin

[0.13.0] - 2021-05-31

  • changed plugin structure to separate plugin instances for multiple sempr cores
  • added componentQuery to RDFPlugin: An extended SPARQL query that also fetches c++ objects associated with ids
  • added builtins to deal with dates

[0.12.0] - 2021-03-15

  • added createEntity builtin
  • added idIsURI flag to entity, to allow skipping the automatic "sempr:" prefix
  • added geometry builtins:
    • geo:buffer
    • geo:difference
    • geo:fromWKT
    • geo:toWKT
    • geo:WGSFromUTM

[0.11.0] - 2021-02-19

  • added geo:intersects builtin
  • added createEntity builtin
  • load plugins from SEMPR_PLUGINS_PATH env variable
  • changed ECWME to include tags. This allows inferring a tag in rules

[0.10.0] - 2020-11-19

  • Added several geometry builtins:
    • geo:area
    • geo:intersection
    • geo:union
    • geo:unionAll (union on GROUP BY results)

[0.9.3] - 2020-10-14

  • Added (template) method to access loaded plugins

[0.9.2] - 2020-10-09

  • Fix: LoadTriplesFromFile builtin support for constants
  • (Mainly releasing this to trigger a build with rete 0.7.0)

[0.9.1] - 2020-09-04

  • GeoDistanceNode now returns float values, for compatibility with rete comparison builtins (le, ge, lt, gt, eq, neq). At some point I should probably change it all to doubles...
  • Fixed: URI representation of entities is now properly returned in an interpretation of rete::TriplePart (previously: std::string), whereas the std::string interpretation now returns the pure id.
  • For compatibility with newer geos versions, the geometry component now contains a unique_ptr to geos::geom::Geometry.

[0.9.0] - 2020-09-01

  • Added: Plugins that register node builders and default rules
  • Fixed/Updated: Using rete v0.6.0 with a new accessor system and fixed string/triple handling.
  • Requires C++14 now.

[0.8.2] - 2020-07-31

  • Fix: Removed leftover -std=c++17 flag from and added missing flag to link boost_system to the pkg config file
  • Updated/fixed: sempr.hpp had some old includes and missed some new ones
  • Updated README

[0.8.1] - 2020-05-27

  • Changed install path of the library, in order to not having to mess with LD_LIBRARY_PATH. (It's <install-dir>/lib/libsempr_core.so now, instead of <install-dir>/lib/sempr/libsempr_core.so)

[0.8.0] - 2020-05-12

  • Added FindCereal.cmake
  • Fix/Adjustment: Let the core explicitely handle rules. This is a change done together with rete v0.3.0 since which the RuleParser no longer adds the production nodes to the rete::Network, but instead returns Rule-objects which when deconstructed also remove the respective nodes from the network. This fix keeps those alive.
  • Added ConstructRules-Node. This allows us to handle rules as data, by only hard-coding a single rule (or a very limited set of rules) that has a ConstructRules-effect and thus creates/removes rules as a result of the inference process.
  • Added a simple TextComponent (in order to store rules as data).
  • Added toString method for ECNode. (Requires rete v0.4.0)

[0.7.0] - 2020-04-24

  • Fix: Wrong relative include path in a header file
  • Fix: Added a specialization of rete::util::to_string for GeosGeometryInterface
  • EntityAccessor now inherits StringAccessor, in which case it returns the entity id in a URI format, i.e.: Entity_1 -> <sempr:Entity_1>. This allows an easy usage in rules without an extra builtin to extract the id.
  • Added geo:distance(?dist ?geo1 ?geo2)
  • Added geo:UTMFromWGS(?geoOut ?geoIn ?utmZone) which transforms a geometry that is specified in WGS84 lon/lat coordinates into a UTM coordinate system, in which e.g. distance calculations with geo:distance make sense.

[0.6.0] - 2020-04-08

  • Added method to TriplePropertyMapEntry that returns the current type
  • Added loadFromJSON and saveToJSON methods to component. These are implemented in a SEMPR_COMPONENT macro that needs to be added to all components

[0.5.1] - 2020-03-27

  • Fix: Multiple wrong include paths
  • Fix: Some ComponentName defs were missing
  • Fix: ECAccessor now registers its type, making it usable in rules/builders

[0.5.0] - 2020-03-24

  • Removed dependency to ODB
  • Added serialization with cereal
  • Added SeparateFileStorage module

[0.4.0] - 2020-03-23

  • Added components and nodes to use with RDF triples: TripleDocument, TriplePropertyMap
  • Added FileWatcher and a corresponding file:exists builtin to trigger rules when a local file changes
  • Changed gitlab-ci to use a qt5 build of soprano

[0.3.1] - 2020-03-05

There has been a complete rework of the internal structure. Entities are only containers for components, which in turn represent (independent) data types. The core of sempr is a rule based rete reasoner, and entity-component pairs are made accessible to it. What has former been thought of as a processing module is now supposed to be implemented in a rule, as a combination of complex preconditions (previously implemented by listening to entity-events) and the rules effect (previously the body of the processEvent method).

[0.2.0] - 2018-08-09

Added

  • SemanticEntity for typesafe RDF-exposure of member variables
  • RDFVector (previously RDFEntity)

Changed

  • GEOS as replacement for GDAL
  • Global coordinate systems now based on geographiclib
  • RDFEntity is now an interface for iterable RDF containers
  • registerChildEntity now public

Fixed

  • Problems with accessing/comparing RDFPropertyMap-entries
  • libsqlite3-dev dependency in CMakeLists

[0.1.0] - 2018-07-06 - Initial Release with GDAL support.