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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.

v1.0.0-rc.4 - 2025-02-27

Changed

  • Added Basic Spatial Functions with additional Spatial Literals definition, which defines a class that has only S_INTERSECTS over all geometry data types
  • Renamed Basic Spatial Operators to Basic Spatial Functions
  • Renamed Spatial Operators to Spatial Functions
  • Renamed Temporal Operators to Temporal Functions
  • Renamed Array Operators to Array Functions
  • Accent- and Case-insensitive Comparison conformance classes have been split into two conformance classes, Accent-insensitive Comparison and Case-insensitive Comparison
  • Renamed Custom Function to Functions
  • Remove recommendation to use fully-qualified property names as queryables.

v1.0.0-rc.3 - 2023-10-18

Added

  • IsInListPredicate example

Changed

  • Fixed several issues with OpenAPI specification
  • Basic Spatial Operators in CQL2 now only requires BBOX and POINT support, so the text and examples were updated to account for this.
  • Fixed the CQL2 JSON between operator example to use 3 items array

Added

v1.0.0-rc.2 - 2022-11-01

Changed

  • Update language on catalog-level queryables
  • Fix several examples

v1.0.0-rc.1 - 2022-03-17

Added

  • Filter Extension - the CQL2 Accent and Case-insensitive Comparison (http://www.opengis.net/spec/cql2/1.0/conf/accent-case-insensitive-comparison) conformance class adds the ACCENTI and CASEI functions for case-insensitive comparison. These replace the UPPER and LOWER psuedo-functions that were previously part of the Advanced Comparison Operators class.

Changed

  • Specifications now use the term "must" instead of "shall". The semantics of these words are identical.
  • Conformance class for Item Search Filter is now https://api.stacspec.org/v1.0.0-beta.5/item-search#filter, whereas before it was incorrectly stated as https://api.stacspec.org/v1.0.0-beta.5/item-search#filter:item-search-filter

v1.0.0-beta.5 - 2022-01-14

Changed

  • Filter Extension updates to align with changes to OAFeat CQL2 spec
    • Updated all "CQL" usages to "CQL2"
    • Most conformance class URIs are now prefixed with http://www.opengis.net/spec/cql2/ instead of http://www.opengis.net/spec/ogcapi-features-3/
    • Conformance classes http://www.opengis.net/spec/ogcapi-features-3/1.0/conf/basic-cql, http://www.opengis.net/spec/ogcapi-features-3/1.0/conf/cql-text, and http://www.opengis.net/spec/ogcapi-features-3/1.0/conf/cql-json have had cql replaced with cql2 (in addition to the prefix change) to become http://www.opengis.net/spec/cql2/1.0/conf/basic-cql2, http://www.opengis.net/spec/cql2/1.0/conf/cql2-text, and http://www.opengis.net/spec/cql2/1.0/conf/cql2-json
    • Significant changes to CQL2 JSON format, now using op and args structure
    • Spatial operator INTERSECTS is now S_INTERSECTS
    • Temporal operator ANYINTERACTS is now T_INTERSECTS
    • Updated Example 3 (now Example 5) to make it clear that property to property comparisons require the Property-Property Comparisons conformance class
    • The CQL2 Case-insensitive Comparison (http://www.opengis.net/spec/cql2/1.0/conf/case-insensitive-comparison) conformance class that adds UPPER/LOWER terms or function CASEI for case-insensitive comparison has not been added to this spec yet, since the definition in CQL2 is in flux.

Fixed

  • Filter Extension - examples of using intervals and timestamps in CQL2 were incorrect and have been fixed
  • Filter Extension - examples are updated so that text and json examples are equivalent

v1.0.0-beta.4 - 2021-10-05

Changed

  • Filter Extension - query language is now referred to as "CQL2" rather than CQL
  • Filter Extension now uses OAFeat Part 3 conformance class URIs
  • Filter Extension - The following changes have been made to the Filter Extension conformance classes to align with changes to the OAFeat CQL draft. All classes whose names have changed also have changed conformance URI strings.
    • "Basic CQL" now includes the "not equal" operator (<>)
    • "Basic CQL" has always supported datetime comparisons, but this is now explicitly mentioned
    • "Enhanced Comparison Operators" has been renamed "Advanced Comparison Operators". This is the same as the OAFeat CQL definition, except that it does not require the upper and lower functions.
    • "Enhanced Spatial Operators" has been renamed to just "Spatial Operators" (not to be confused with Basic Spatial Operators)
    • "Basic Temporal Operators" and "Enhanced Temporal Operators" have merged into "Temporal Operators"
    • "Functions" has been renamed "Custom Functions"
    • "Arithmetic" has been renamed "Arithmetic Expressions"
    • "Arrays" has been renamed "Array Operators"
    • "Queryable Second Operand" has been renamed "Property-Property Comparisons"

v1.0.0-beta.3 - 2021-08-06

Changed

[v1.0.0-beta.2] - 2021-06-01

Added

  • Added Filter extension to integrate OAFeat Part 3 CQL

Older versions

See the stac-api-spec CHANGELOG for STAC API releases prior to or equal to version v1.0.0-rc.2.