mapnik/tests/visual_tests/styles/road-casings-non-grouped-rendering.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE Map[]>
<Map srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over" background-color="#dfd8c9">
  <Parameters>
    <Parameter name="sizes">600,600</Parameter>
    <Parameter name="bbox">1477001.12245,6890242.37746,1480004.49012,6892244.62256</Parameter>
  </Parameters>

<Style name="marking" filter-mode="first">
  <Rule>
    <Filter>([class] = 'railways')</Filter>
    <LineSymbolizer stroke="#ffffff" stroke-width="1.8" stroke-dasharray="5, 5" />
  </Rule>
</Style>
<Style name="fill" filter-mode="first">
  <Rule>
    <Filter>([class] = 'minorroads')</Filter>
    <LineSymbolizer stroke-width="2.5" stroke="#ffffff" stroke-linecap="round" />
  </Rule>
  <Rule>
    <Filter>([class] = 'mainroads')</Filter>
    <LineSymbolizer stroke-width="4" stroke="#ff9999" stroke-linecap="round" />
  </Rule>
  <Rule>
    <Filter>([class] = 'motorways')</Filter>
    <LineSymbolizer stroke-width="6" stroke="#ff6666" stroke-linecap="round" />
  </Rule>
  <Rule>
    <Filter>([class] = 'railways')</Filter>
    <LineSymbolizer stroke-width="3" stroke="#333333" stroke-linecap="round" />
  </Rule>
</Style>
<Style name="bridge" filter-mode="first">
  <Rule>
    <Filter>([class] = 'railways') and ([bridge] = 1)</Filter>
    <LineSymbolizer stroke-width="6" stroke="#ffffff" />
  </Rule>
</Style>
<Style name="casing" filter-mode="first">
  <Rule>
    <Filter>([class] = 'railways') and ([bridge] = 1)</Filter>
    <LineSymbolizer stroke-width="8" stroke="#333333" />
  </Rule>
  <Rule>
    <Filter>([class] = 'minorroads')</Filter>
    <LineSymbolizer stroke-width="3" stroke="#a69269" />
  </Rule>
  <Rule>
    <Filter>([class] = 'mainroads')</Filter>
    <LineSymbolizer stroke-width="5" stroke="#ff0000" />
  </Rule>
  <Rule>
    <Filter>([class] = 'motorways')</Filter>
    <LineSymbolizer stroke-width="8" stroke="#990000" />
  </Rule>
</Style>
<Layer name="layer"
  srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over">
    <StyleName>casing</StyleName>
    <StyleName>bridge</StyleName>
    <StyleName>fill</StyleName>
    <StyleName>marking</StyleName>
    <Datasource>
       <Parameter name="file">../data/grouped-rendering.sqlite</Parameter>
       <Parameter name="table">(SELECT fid, geometry, type, tunnel, bridge, oneway, class, z_order, CAST((z_order / 10.0) AS INTEGER) AS z
FROM roads ORDER BY z_order) AS road</Parameter>
       <Parameter name="type">sqlite</Parameter>
    </Datasource>
  </Layer>

</Map>