In https://codereview.qt-project.org/#/c/99815/ implemented in QT 5.5,
doubles are converted to strings using '%.17g', so short decimal values
might be expanded to long strings depending on their values.
https://wiki.qt.io/New_Features_in_Qt_5.7 has a logic to avoid this, but
if we select carefully the double to have both an exact binary and decimal
representation, that can work will all versions.
$ python -c "print('%.17g' % 9.7)"
9.6999999999999993
$ python -c "print('%.17g' % 1.25)"
1.25
Second part of qgis/QGIS-Enhancement-Proposals#53
(QEP 35: WFS provider enhancements)
- URI parameter with sql with SELECT / FROM / JOIN / WHERE / ORDER BY clauses
- handle WFS 2.0 joins
- handle DateTime fields
- enable "Only request features overlapping the view extent" by default (and memorize the settings)
- rework DescribeFeatureType parsing to handle responses with several documents, and some support for attribute types being complexType
- rework feature transfer between downloader and iterator so as to avoid uncontrolled RAM usage when the iterator cannot keep up with the downloader
- turn on WAL journaling for better reader / writer concurrency
- add retry logic based on the 'Max retry in case of tile request errors' setting (renamed 'Max retry in case of tile or feature request errors')
- error to MessageBar in case of failed download
- in progress dialog, add a "Hide" button to mask the dialog
- improve automated testing
- add testing of the GUI of QgsWFSSourceSelect
Move the QgsExpression::Interval class out to its own QgsInterval
class, extend with new methods and add tests
Add a typedef to keep API compatibility for 2.16
This change makes the current atlas feature (and additionally all
attributes of related child features) available to the source of
a composer HTML item, allowing the item to dynamically adjust
its rendered HTML in response to the feature's properties. An
example use case is dynamically populating a HTML table with
all the attributes of related child features for the atlas
feature.
To use this, the HTML source must implement a "setFeature(feature)"
JavaScript function. This function is called whenever the atlas
feature changes, and is passed the atlas feature (+related attributes)
as a GeoJSON Feature.
Sponsored by Kanton of Zug, Switzerland
The previous setting for include WKT when copying features has been
replaced with a choice of copying features as "Plain text, attributes
only", "Plain text, WKT geometry" and a new "GeoJSON" option.
When set to "GeoJSON", copying features in QGIS will place a GeoJSON
text representation of the features on the clipboard for easy
pasting into other applications/javascript code.
Sponsored by North Road
