geopython · tomkralidis · May 23, 2025 · Jun 5, 2026 · kalxas · Jun 4, 2026
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
@@ -130,6 +130,7 @@ jobs:
         pip3 install -r requirements-pubsub.txt
         pip3 install .
         pip3 install GDAL==`gdal-config --version`
+        pip3 install --force-reinstall https://github.com/geopython/pygeofilter/archive/main.zip
     - name: setup test data ⚙️
       run: |
         pybabel compile -d locale -l es

diff --git a/docs/source/cql.rst → docs/source/cql2.rst b/docs/source/cql.rst → docs/source/cql2.rst
@@ -1,9 +1,9 @@
-.. _cql:
+.. _cql2:
 
-CQL support
-===========
+CQL2 support
+============
 
-OGC Common Query Language (`CQL2`_) is a generic language designed to provide enhanced query and subset/filtering to (primarily) feature and record data.
+`OGC Common Query Language`_ (CQL2) is a generic language designed to provide enhanced query and subset/filtering to (primarily) feature and record data.
 
 Providers
 ---------
@@ -14,7 +14,7 @@ for current provider support.
 Limitations
 -----------
 
-Support of CQL is limited to `Basic CQL2 <https://docs.ogc.org/is/21-065r2/21-065r2.html#cql2-core>`_ and thus it allows to query with the
+Support is limited to `Basic CQL2 <https://docs.ogc.org/is/21-065r2/21-065r2.html#cql2-core>`_ and thus it allows to query with the
 following predicates:
 
 * comparison predicates
@@ -24,9 +24,9 @@ following predicates:
 Formats
 -------
 
-Supported providers leverage the CQL2 dialect with the JSON encoding `CQL-JSON <https://docs.ogc.org/is/21-065r2/21-065r2.html#cql2-json>`_.
+Supported providers leverage the CQL2 dialect with the JSON encoding `CQL JSON <https://docs.ogc.org/is/21-065r2/21-065r2.html#cql2-json>`_.
 
-PostgreSQL supports both `CQL2 JSON <https://docs.ogc.org/is/21-065r2/21-065r2.html#cql2-json>`_ and `CQL text <https://docs.ogc.org/is/21-065r2/21-065r2.html#cql2-text>`_ dialects.
+PostgreSQL supports both `CQL JSON <https://docs.ogc.org/is/21-065r2/21-065r2.html#cql2-json>`_ and `CQL Text <https://docs.ogc.org/is/21-065r2/21-065r2.html#cql2-text>`_ dialects.
 
 Queries
 ^^^^^^^
@@ -83,7 +83,7 @@ Or
     ]
   }'
 
-The same ``BETWEEN`` query using HTTP GET request formatted as CQL text and URL encoded as below:
+The same ``BETWEEN`` query using HTTP GET request formatted as CQL2 text and URL encoded as below:
 
 .. code-block:: bash
 
@@ -103,25 +103,10 @@ An ``EQUALS`` example for a specific property:
     ]
   }'
 
-A ``CROSSES`` example via an HTTP GET request.  The CQL text is passed via the ``filter`` parameter.
+A ``S_CROSSES`` example via an HTTP GET request.  The CQL2 text is passed via the ``filter`` parameter.
 
 .. code-block:: bash
 
-  curl "http://localhost:5000/collections/hot_osm_waterways/items?f=json&filter=CROSSES(foo_geom,%20LINESTRING(28%20-2,%2030%20-4))"
+  curl "http://localhost:5000/collections/hot_osm_waterways/items?f=json&filter=S_CROSSES(foo_geom,%20LINESTRING(28%20-2,%2030%20-4))"
 
-A ``DWITHIN`` example via HTTP GET and using a custom CRS for the filter geometry:
-
-.. code-block:: bash
-
-  curl "http://localhost:5000/collections/beni/items?filter=DWITHIN(geometry,POINT(1392921%205145517),100,meters)&filter-crs=http://www.opengis.net/def/crs/EPSG/0/3857"
-
-
-The same example, but this time providing a geometry in EWKT format:
-
-.. code-block:: bash
-
-  curl "http://localhost:5000/collections/beni/items?filter=DWITHIN(geometry,SRID=3857;POINT(1392921%205145517),100,meters)"
-
-Note that the CQL text has been URL encoded. This is required in curl commands but when entering in a browser, plain text can be used e.g. ``CROSSES(foo_geom, LINESTRING(28 -2, 30 -4))``.
-
-.. _`CQL2`: https://docs.ogc.org/is/21-065r2/21-065r2.html
+.. _`OGC Common Query Language`: https://docs.ogc.org/is/21-065r2/21-065r2.html
diff --git a/docs/source/index.rst b/docs/source/index.rst
@@ -45,7 +45,7 @@ reference documentation on all aspects of the project.
    plugins
    html-templating
    crs
-   cql
+   cql2
    language
    development
    ogc-compliance

diff --git a/docs/source/publishing/ogcapi-features.rst b/docs/source/publishing/ogcapi-features.rst
@@ -115,7 +115,7 @@ To publish an Elasticsearch index, the following are required in your index:
 The ES provider also has the support for the CQL queries as indicated in the table above.
 
 .. seealso::
-  :ref:`cql` for more details on how to use Common Query Language (CQL) to filter the collection with specific queries.
+  :ref:`cql2` for more details on how to use Common Query Language (CQL) to filter the collection with specific queries.
 
 .. _ERDDAP Tabledap Service:
 
@@ -292,7 +292,7 @@ These are optional and if not specified, the default from the engine will be use
 This provider has support for the CQL queries as indicated in the Provider table above.
 
 .. seealso::
-  :ref:`cql` for more details on how to use Common Query Language (CQL) to filter the collection with specific queries.
+  :ref:`cql2` for more details on how to use Common Query Language (CQL) to filter the collection with specific queries.
 
 
 OGR
@@ -432,7 +432,7 @@ To publish an OpenSearch index, the following are required in your index:
 The OpenSearch provider also has the support for the CQL queries as indicated in the table above.
 
 .. seealso::
-  :ref:`cql` for more details on how to use Common Query Language (CQL) to filter the collection with specific queries.
+  :ref:`cql2` for more details on how to use Common Query Language (CQL) to filter the collection with specific queries.
 
 .. _Oracle:
 
@@ -730,7 +730,7 @@ block contains the necessary socket connection information.
 This provider has support for the CQL queries as indicated in the Provider table above.
 
 .. seealso::
-  :ref:`cql` for more details on how to use Common Query Language (CQL) to filter the collection with specific queries.
+  :ref:`cql2` for more details on how to use Common Query Language (CQL) to filter the collection with specific queries.
 
 SQLiteGPKG
 ^^^^^^^^^^

diff --git a/docs/source/publishing/ogcapi-records.rst b/docs/source/publishing/ogcapi-records.rst
@@ -54,7 +54,7 @@ To publish an Elasticsearch index, the following are required in your index:
 The ES provider also has the support for the CQL queries as indicated in the table above.
 
 .. seealso::
-  :ref:`cql` for more details on how to use Common Query Language (CQL) to filter the collection with specific queries.
+  :ref:`cql2` for more details on how to use Common Query Language (CQL) to filter the collection with specific queries.
 
 TinyDBCatalogue
 ^^^^^^^^^^^^^^^

diff --git a/pygeoapi/api/itemtypes.py b/pygeoapi/api/itemtypes.py
@@ -43,7 +43,7 @@
 from typing import Any, Tuple, Union
 import urllib.parse
 
-from pygeofilter.parsers.ecql import parse as parse_ecql_text
+from pygeofilter.parsers.cql2_text import parse as parse_cql2_text
 from pygeofilter.parsers.cql2_json import parse as parse_cql2_json
 from pyproj.exceptions import CRSError
 
@@ -84,7 +84,10 @@
     'http://www.opengis.net/spec/ogcapi-features-3/1.0/conf/queryables-query-parameters',  # noqa
     'http://www.opengis.net/spec/ogcapi-features-4/1.0/conf/create-replace-delete',  # noqa
     'http://www.opengis.net/spec/ogcapi-features-5/1.0/conf/schemas',
-    'http://www.opengis.net/spec/ogcapi-features-5/1.0/conf/core-roles-features'  # noqa
+    'http://www.opengis.net/spec/ogcapi-features-5/1.0/conf/core-roles-features',  # noqa
+    'http://www.opengis.net/spec/cql2/1.0/conf/cql2-text',
+    'http://www.opengis.net/spec/cql2/1.0/conf/basic-cql2'
+
 ]
 
 CONFORMANCE_CLASSES_RECORDS = [
@@ -488,7 +491,7 @@ def get_collection_items(
 
     if cql_text is not None:
         try:
-            filter_ = parse_ecql_text(cql_text)
+            filter_ = parse_cql2_text(cql_text)
             filter_ = modify_pygeofilter(
                 filter_,
                 filter_crs_uri=filter_crs_uri,
@@ -522,8 +525,8 @@ def get_collection_items(
 
     LOGGER.debug('Processing filter-lang parameter')
     filter_lang = request.params.get('filter-lang')
-    # Currently only cql-text is handled, but it is optional
-    if filter_lang not in [None, 'cql-json', 'cql-text']:
+    filter_langs = [None, 'cql-json', 'cql-text', 'cql2-text', 'cql2-json']
+    if filter_lang not in filter_langs:
         msg = 'Invalid filter language'
         return api.get_exception(
             HTTPStatus.BAD_REQUEST, headers, request.format,

diff --git a/pygeoapi/formatter/csv_.py b/pygeoapi/formatter/csv_.py
@@ -2,7 +2,7 @@
 #
 # Authors: Tom Kralidis <tomkralidis@gmail.com>
 #
-# Copyright (c) 2022 Tom Kralidis
+# Copyright (c) 2026 Tom Kralidis
 #
 # Permission is hereby granted, free of charge, to any person
 # obtaining a copy of this software and associated documentation
@@ -66,12 +66,12 @@ def write(self, options: dict = {}, data: dict = None) -> str:
 
         :returns: string representation of format
         """
-        type = data.get('type', '')
-        LOGGER.debug(f'Formatting CSV from data type: {type}')
+        type_ = data.get('type', '')
+        LOGGER.debug(f'Formatting CSV from data type: {type_}')
 
-        if 'Feature' in type or 'features' in data:
+        if 'Feature' in type_ or 'features' in data:
             return self._write_from_geojson(options, data)
-        elif 'Coverage' in type or 'coverages' in data:
+        elif 'Coverage' in type_ or 'coverages' in data:
             return self._write_from_covjson(options, data)
 
     def _write_from_geojson(

diff --git a/tests/api/test_api.py b/tests/api/test_api.py
@@ -589,7 +589,7 @@ def test_conformance(config, api_):
 
     assert isinstance(root, dict)
     assert 'conformsTo' in root
-    assert len(root['conformsTo']) == 42
+    assert len(root['conformsTo']) == 44
     assert 'http://www.opengis.net/spec/ogcapi-features-2/1.0/conf/crs' \
            in root['conformsTo']
 

diff --git a/tests/other/test_crs.py b/tests/other/test_crs.py
@@ -2,7 +2,7 @@
 #
 # Authors: Tom Kralidis <tomkralidis@gmail.com>
 #
-# Copyright (c) 2025 Tom Kralidis
+# Copyright (c) 2026 Tom Kralidis
 #
 # Permission is hereby granted, free of charge, to any person
 # obtaining a copy of this software and associated documentation
@@ -33,7 +33,7 @@
 import pytest
 from pyproj.exceptions import CRSError
 import pygeofilter.ast
-from pygeofilter.parsers.ecql import parse
+from pygeofilter.parsers.cql2_text import parse
 from pygeofilter.values import Geometry
 from shapely.geometry import Point
 
@@ -201,7 +201,7 @@ def test_transform_bbox():
 
 @pytest.mark.parametrize('original_filter, filter_crs, storage_crs, geometry_colum_name, expected', [  # noqa
     pytest.param(
-        'INTERSECTS(geometry, POINT(1 1))',
+        'S_INTERSECTS(geometry, POINT(1 1))',
         'http://www.opengis.net/def/crs/OGC/1.3/CRS84',
         None,
         None,
@@ -212,7 +212,7 @@ def test_transform_bbox():
         id='passthrough'
     ),
     pytest.param(
-        'INTERSECTS(geometry, POINT(1 1))',
+        'S_INTERSECTS(geometry, POINT(1 1))',
         'http://www.opengis.net/def/crs/OGC/1.3/CRS84',
         None,
         'custom_geom_name',
@@ -223,7 +223,7 @@ def test_transform_bbox():
         id='unnested-geometry-name'
     ),
     pytest.param(
-        'some_attribute = 10 AND INTERSECTS(geometry, POINT(1 1))',
+        'some_attribute = 10 AND S_INTERSECTS(geometry, POINT(1 1))',
         'http://www.opengis.net/def/crs/OGC/1.3/CRS84',
         None,
         'custom_geom_name',
@@ -238,31 +238,7 @@ def test_transform_bbox():
         id='nested-geometry-name'
     ),
     pytest.param(
-        '(some_attribute = 10 AND INTERSECTS(geometry, POINT(1 1))) OR '
-        'DWITHIN(geometry, POINT(2 2), 10, meters)',
-        'http://www.opengis.net/def/crs/OGC/1.3/CRS84',
-        None,
-        'custom_geom_name',
-        pygeofilter.ast.Or(
-            pygeofilter.ast.And(
-                pygeofilter.ast.Equal(
-                    pygeofilter.ast.Attribute(name='some_attribute'), 10),
-                pygeofilter.ast.GeometryIntersects(
-                    pygeofilter.ast.Attribute(name='custom_geom_name'),
-                    Geometry({'type': 'Point', 'coordinates': (1, 1)})
-                ),
-            ),
-            pygeofilter.ast.DistanceWithin(
-                pygeofilter.ast.Attribute(name='custom_geom_name'),
-                Geometry({'type': 'Point', 'coordinates': (2, 2)}),
-                distance=10,
-                units='meters',
-            )
-        ),
-        id='complex-filter-name'
-    ),
-    pytest.param(
-        'INTERSECTS(geometry, POINT(12.512829 41.896698))',
+        'S_INTERSECTS(geometry, POINT(12.512829 41.896698))',
         'http://www.opengis.net/def/crs/OGC/1.3/CRS84',
         'http://www.opengis.net/def/crs/EPSG/0/3004',
         None,
@@ -273,7 +249,7 @@ def test_transform_bbox():
         id='unnested-geometry-transformed-coords'
     ),
     pytest.param(
-        'some_attribute = 10 AND INTERSECTS(geometry, POINT(12.512829 41.896698))',  # noqa
+        'some_attribute = 10 AND S_INTERSECTS(geometry, POINT(12.512829 41.896698))',  # noqa
         'http://www.opengis.net/def/crs/OGC/1.3/CRS84',
         'http://www.opengis.net/def/crs/EPSG/0/3004',
         None,
@@ -288,31 +264,7 @@ def test_transform_bbox():
         id='nested-geometry-transformed-coords'
     ),
     pytest.param(
-        '(some_attribute = 10 AND INTERSECTS(geometry, POINT(12.512829 41.896698))) OR '  # noqa
-        'DWITHIN(geometry, POINT(12 41), 10, meters)',
-        'http://www.opengis.net/def/crs/OGC/1.3/CRS84',
-        'http://www.opengis.net/def/crs/EPSG/0/3004',
-        None,
-        pygeofilter.ast.Or(
-            pygeofilter.ast.And(
-                pygeofilter.ast.Equal(
-                    pygeofilter.ast.Attribute(name='some_attribute'), 10),
-                pygeofilter.ast.GeometryIntersects(
-                    pygeofilter.ast.Attribute(name='geometry'),
-                    Geometry({'type': 'Point', 'coordinates': (2313682.387730346, 4641308.550187246)})  # noqa
-                ),
-            ),
-            pygeofilter.ast.DistanceWithin(
-                pygeofilter.ast.Attribute(name='geometry'),
-                Geometry({'type': 'Point', 'coordinates': (2267681.8892602, 4543101.513292163)}),  # noqa
-                distance=10,
-                units='meters',
-            )
-        ),
-        id='complex-filter-transformed-coords'
-    ),
-    pytest.param(
-        'INTERSECTS(geometry, SRID=3857;POINT(1392921 5145517))',
+        'S_INTERSECTS(geometry, SRID=3857;POINT(1392921 5145517))',
         'http://www.opengis.net/def/crs/OGC/1.3/CRS84',
         'http://www.opengis.net/def/crs/EPSG/0/3004',
         None,
@@ -323,7 +275,7 @@ def test_transform_bbox():
         id='unnested-geometry-transformed-coords-explicit-input-crs-ewkt'
     ),
     pytest.param(
-        'INTERSECTS(geometry, POINT(1392921 5145517))',
+        'S_INTERSECTS(geometry, POINT(1392921 5145517))',
         'http://www.opengis.net/def/crs/EPSG/0/3857',
         'http://www.opengis.net/def/crs/EPSG/0/3004',
         None,
@@ -334,7 +286,7 @@ def test_transform_bbox():
         id='unnested-geometry-transformed-coords-explicit-input-crs-filter-crs'
     ),
     pytest.param(
-        'INTERSECTS(geometry, SRID=3857;POINT(1392921 5145517))',
+        'S_INTERSECTS(geometry, SRID=3857;POINT(1392921 5145517))',
         'http://www.opengis.net/def/crs/OGC/1.3/CRS84',
         'http://www.opengis.net/def/crs/EPSG/0/3004',
         None,
@@ -345,7 +297,7 @@ def test_transform_bbox():
         id='unnested-geometry-transformed-coords-ewkt-crs-overrides-filter-crs'
     ),
     pytest.param(
-        'INTERSECTS(geometry, POINT(12.512829 41.896698))',
+        'S_INTERSECTS(geometry, POINT(12.512829 41.896698))',
         'http://www.opengis.net/def/crs/OGC/1.3/CRS84',
         'http://www.opengis.net/def/crs/EPSG/0/3004',
         'custom_geom_name',

diff --git a/tests/provider/test_postgresql_provider.py b/tests/provider/test_postgresql_provider.py
@@ -57,7 +57,7 @@
 import pyproj
 from shapely.geometry import shape as geojson_to_geom
 
-from pygeofilter.parsers.ecql import parse
+from pygeofilter.parsers.cql2_text import parse
 
 from pygeoapi.api import API
 from pygeoapi.api.itemtypes import (
@@ -410,7 +410,7 @@ def test_get_not_existing_item_raise_exception(config):
          80835475, 80835478, 80835483, 80835486]),
     ("osm_id BETWEEN 80800000 AND 80900000 AND waterway = 'stream'",
         [80835470]),
-    ("osm_id BETWEEN 80800000 AND 80900000 AND waterway ILIKE 'sTrEam'",
+    ("osm_id BETWEEN 80800000 AND 80900000 AND CASEI(waterway) LIKE CASEI('sTrEam')",  # noqa
         [80835470]),
     ("osm_id BETWEEN 80800000 AND 80900000 AND waterway LIKE 's%'",
         [80835470]),
@@ -421,7 +421,7 @@ def test_get_not_existing_item_raise_exception(config):
     ("osm_id BETWEEN 80800000 AND 80900000 AND BBOX(foo_geom, 29, -2.8, 29.2, -2.9)",  # noqa
         [80827793, 80835470, 80835472, 80835483, 80835489]),
     ("osm_id BETWEEN 80800000 AND 80900000 AND "
-        "CROSSES(foo_geom,  LINESTRING(29.091 -2.731, 29.253 -2.845))",
+        "S_CROSSES(foo_geom,  LINESTRING(29.091 -2.731, 29.253 -2.845))",
         [80835470, 80835472, 80835489])
 ])
 def test_query_cql(config, cql, expected_ids):