Adds a new map widget to the 2.0 search templates. It is shown initially
in the sidebar but it is expanded when the user needs to draw an area.
It uses Leaflet and Leaflet.draw.
Otherwise you get this exception when the date on the document has time
zone information, as dates as stored without it on the database:
TypeError: can't compare offset-naive and offset-aware datetimes
This backend does not use the spatial field on Solr, but indexes the
area and coordinates of the dataset's extent. On query time, a boost
function is used to calculate a ratio between the query area and the
dataset extent, which will give a value of 0 for areas that don't
overlap and 1 for a perfect fit. The same function is used both for
sorting and filtering.
To return correct results on a spatial query, rectangle geometries must
be defined in counter-clockwise order [1]. This changeset adds a small
sanity check to before_index when we are dealing with a Polygon geometry
that has 5 coordinate pairs. Shapely is used to generate a LinearRing
from the polygon coordinates and check if they are ccw. If not, they are
reordered and a new polygon is generated so the WKT sent to Solr is
properly ordered.
The GeoJSON template used for extents in the base spatial harvester has
been also updated to define the coordinates counter-clockwise.
[1]
http://wiki.apache.org/solr/SolrAdaptersForLuceneSpatial4#JTS_.2BAC8_WKT_.2BAC8_Polygon_notes
When the 'ckanext.spatial.search_backend' config option is set to
'solr', the extension will index geometries stored in the 'spatial'
extra on the spatial field of the Solr index (named 'spatial_geom').
This is done on the 'before_index' extension point.
Also, when doing a query, if the same config option is in place, the
necessary fq parameter will be set to pass the spatial query to Solr.
Some common problems:
* Whitespace, tabs, line feeds and plus signs: should be handled by
float()
* Text: log error and skip creation of spatial extra
* Same set of 2 coords for extent: create point instead of polygon
Note that the bbox values are stored as they are in the bbox-xx-yy
extras
The 'guess_resource_format' function looks for common patterns in popular
geospatial services and file extensions. It just looks at the provided URL,
it does not attempt to perform any remote check. By default, it will use the
mimetypes module if no match was found before to try to guess the format.
On the previous version, all resources in documents of type 'service' were
queried to see if they were actually WMS. This is no longer the case,
but services flagged as 'wms' can be verified if the following setting
is set to True: ckanext.spatial.harvest.validate_wms
Some improvements on the endpoints that return the contents of the
harvest objects:
* Nicer URLs with redirects to the old ones
* Returning the raw harvest object content is available on the main
harvest extension, so just redirect there
* Support for showing the original document of a harvest object, if
present
* Suport for defining a custom XSLT for the HTML view, via
ckanext.spatial.harvest.xslt_html_content
ckanext.spatial.harvest.xslt_html_content_original
The import CLI reruns the import stage for the last current objects, so
when running it, the previous objects don't need to be changed. Any
date check is overridden to force the update of the package.
This can be set instance wide on the ini file with
ckanext.spatial.harvest.continue_on_validation_errors
or per source, adding continue_on_validation_errors=true to the source
config.
You don't need to create a 'harvest' sysadmin user any more.
By default this will be the internal site admin user. This is the
recommended setting, but if necessary it can be overridden by
the `ckanext.spatial.harvest.user_name` config option, eg to
support the old hardcoded 'harvest' user
This can be overridden by custom harvesters willing to support non ISO
formats (like FGDC). It is called whrn the original_document and
original_format harvest object extras are present. Custom harvesters are
responsible for transforming the original document to ISO.
Prior to the merging of the new spatial harvesters, the existing ones
based on Gemini and UKLP have been moved to their own namespace
(ckanext.spatial.harvesters.gemini). The plugin points have been updated
so users currently using these harvesters will still be able to use them
as normal.
The base harvester (SpatialHarvester) has been updated with new methods,
most significally '_get_package_dict' and 'import_stage'. Note that
SpatialHarvester now extends HarvesterBase on ckanext-harvest, which had
some of its methods updated.
TODO: still some geo.data.gov specific bits!
Changes in multiplicity to support the ISO 19115 spec rather than just
the Gemini 2 one. Thanks to @dread for his help on this.
Summary of the changes:
* dataset-reference-date: Set to 1..*
Note that there was a bug with mutliple values allowed per date.
Returned object should now be like:
"dataset-reference-date": [{"type": "creation", "value": "2004-02"},
{"type": "revision", "value": "2006-07-03"}]
* metadata-languge: Set to 0..1
* resource-type: Set to *. That means that a list is now returned
* bbox: Set to *. Note that bboxes are now returned as objects such as:
[{"north":xxx, "south":xxx,, "east":xxx, "west":xxx}, {"north":xxx,
"south":xxx,, "east":xxx, "west":xxx}]
The existing Gemini based harvesters and validators have been adapted,
all tests pass.
Add new mandatory fields when creating sources, status dict has new
keys, CKAN lower cases formats, take into account harvest source
datasets.
Added a local getcapabilities response to avoid remote 404s.
Note that the TestValidation tests need to be fixed, as 27c4ee81e
removed the validation from the gather stage.
- Added a config option ('ckanext.spatial.use_postgis_sorting') to
activate this as this behaviour will be deprecated in the future
in favour of Solr 4 spatial sorting capabilities.
Also fixed the tests
Conflicts:
ckanext/spatial/plugin.py
Reverting changes for "#276 Coupled Resource" on master as it is INSPIRE-specific. Moving to datagovuk/ckanext-spatial branch dgu.
This reverts commit 91e547a622.
Reverting changes for "#276 Coupled Resource" on master as it is INSPIRE-specific. Moving to datagovuk/ckanext-spatial branch dgu.
This reverts commit ecd6036efe.
Reverting changes for "#276 Coupled Resource" on master as it is INSPIRE-specific. Moving to datagovuk/ckanext-spatial branch dgu.
This reverts commit 01536873b9.
Conflicts:
ckanext/spatial/harvesters.py
Reverting changes for "#276 Coupled Resource" on master as it is INSPIRE-specific. Moving to datagovuk/ckanext-spatial branch dgu.
This reverts commit 3f627d9700.
amercader
Ian Ward
kindly
David Read