Hi!
I’m using GeoServer 2.4.4 (GeoWebCache v1.5.0).
I’m currently serving a layer of point (latitude/longitude) data from a PostGIS table and have enabled direct integration GWC caching. This all works a treat when no CQL filter is supplied…
My (generated) GWC layer configuration file is…
LayerInfoImpl-43ac45ed:143e39ae9ed:-7ffa
true
sentinel:hotspot_current
image/jpeg
image/png
EPSG:900913
EPSG:4326
4
4
STYLES
sentinel-legacy
0
Requesting a tile and looking at the result in FireBug gives me…
Response Headers
Cache-Control |
max-age=600 |
|---|---|
Content-Disposition |
inline; filename=blah_blah.png |
Content-Type |
image/png |
Date |
Mon, 10 Feb 2014 02:53:22 GMT |
Etag |
8528c0ee4f3307e0a303a2949d671801 |
Last-Modified |
Mon, 10 Feb 2014 02:52:53 GMT |
Server |
Apache-Coyote/1.1 |
Transfer-Encoding |
chunked |
geowebcache-cache-result |
HIT |
geowebcache-crs |
EPSG:900913 |
geowebcache-gridset |
EPSG:900913 |
geowebcache-layer |
blah:blah_layer |
geowebcache-tile-bounds |
15028131.254999999,-5009377.085000001,17532819.797500003,-2504688.5425000004 |
geowebcache-tile-index |
[14, 6, 4] |
Beautiful.
If I then add a CQL FILTER to my request it, as expected, misses the cache due to the CQL FILTER…
Response Headers
Cache-Control |
max-age=600, must-revalidate |
|---|---|
Content-Disposition |
inline; filename=blah_blah.png |
Content-Type |
image/png |
Date |
Mon, 10 Feb 2014 02:57:59 GMT |
Expires |
Mon, 10 Feb 2014 03:07:59 GMT |
Server |
Apache-Coyote/1.1 |
Transfer-Encoding |
chunked |
geowebcache-cache-result |
MISS |
geowebcache-miss-reason |
no parameter filter exists for CQL_FILTER |
So, I added a CQL FILTER parameter which added the following to my GWC layer configuration…
STYLES
sentinel-legacy
CQL_FILTER
^(.*)$
But when I try my request again it now misses the cache complaining about the FILTER parameter…
Response Headers
Cache-Control |
max-age=600, must-revalidate |
|---|---|
Content-Disposition |
inline; filename=blah_blah.png |
Content-Type |
image/png |
Date |
Mon, 10 Feb 2014 03:08:53 GMT |
Expires |
Mon, 10 Feb 2014 03:18:53 GMT |
Server |
Apache-Coyote/1.1 |
Transfer-Encoding |
chunked |
geowebcache-cache-result |
MISS |
geowebcache-miss-reason |
no parameter filter exists for FILTER |
If I similarly add a parameter for FILTER (even though I’m not explicitly sending it?) then my config file now gets…
STYLES
sentinel-legacy
FILTER
^(.*)$
CQL_FILTER
^(.*)$
But when I try my request again then I get an exception…
<?xml version="1.0" encoding="UTF-8" standalone="no"?>java.lang.NullPointerException
null
And in my geoserver log file….
2014-02-10 14:13:07,280 ERROR [geoserver.ows] -
java.lang.NullPointerException
at java.util.regex.Matcher.getTextLength(Matcher.java:1234)
at java.util.regex.Matcher.reset(Matcher.java:308)
at java.util.regex.Matcher.(Matcher.java:228)
at java.util.regex.Pattern.matcher(Pattern.java:1088)
at org.geowebcache.filter.parameters.RegexParameterFilter.getMatcher(RegexParameterFilter.java:49)
at org.geowebcache.filter.parameters.RegexParameterFilter.applies(RegexParameterFilter.java:87)
at org.geoserver.gwc.GWC.filterApplies(GWC.java:884)
at org.geoserver.gwc.GWC.isCachingPossible(GWC.java:823)
at org.geoserver.gwc.GWC.prepareRequest(GWC.java:647)
at org.geoserver.gwc.GWC.dispatch(GWC.java:631)
at org.geoserver.gwc.wms.CachingWebMapService.invoke(CachingWebMapService.java:83)
at org.geoserver.gwc.wms.CachingWebMapService.invoke(CachingWebMapService.java:54)
Any clues on what I am doing wrong?
Thanks heaps!
Simon Oldfield
National Earth Observation Group | Environmental Geoscience Division | GEOSCIENCE AUSTRALIA
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