10 API changes between v3.0 and v3.1

lightmare edited this page 2019-08-12 16:45:45 +02:00

Table of Contents

• Removed
• Changed
• Added

Compiler must now support c++14 to build Mapnik 3.1.x

Removed

TODO

Changed

• PostGIS: Variables in postgis SQL queries must now additionally be wrapped in ! (refs #3618):

-- Mapnik 3.0
SELECT ... WHERE trait = @variable

-- Mapnik 3.1
SELECT ... WHERE trait = !@variable!

• PostGIS & PGraster: The table/geometry_table/raster_table parameter in XML style must be quoted if it would need quoting in SQL query (for example if it's a reserved word or multiple words; refs #3618):

<!-- Mapnik 3.0 -->
<Parameter name="geometry_table">rolling stones</Parameter>

<!-- Mapnik 3.1 -->
<Parameter name="geometry_table">"rolling stones"</Parameter>

• load_map() with strict=true throws an exception on duplicate style names (refs #3770, #3917).

Added

• PGraster: Variable interpolation just like PostGIS plugin (refs #3618).
• PostGIS & PGraster: Datasource parameter application_name (refs #3984).
• Geobuf input plugin (refs 3715).
• Layers can be nested, comp-op and opacity on Layer level are supported (refs 3474).
• extend option of TextSymbolizer (refs 3512).
• Text simple placement C for no displacement (refs #3596).
• angled-point placement of MarkersSymbolizer (refs 3782).

TODO