Hello all,
So I'm creating a community-mapbuilder application, and I think to
myself, "hey, I'll have a 'search' feature here'.
I create the page, have it submit a filter like this to my SDE-backed
geoserver featureCollection:
<Filter>
<PropertyIsLike wildcard,singlechar,escape>
<PropertyName>STREET_NAME</PropertyName>
<Literal>%MAIN%</Literal>
</PropertyIsLike>
</Filter>
However, it gives me back EVERY feature in the collection.
Hmm. I try a few different things, but while it's definitely getting
the LIKE filter into its internal Query representation: (here's a log
snippit)
[FINE] org.vfny.geoserver.wfs.responses.FeatureResponse - Query is
Query []
feature type: massgis:GISDATA.NAVTEQRDS_ARC
filter: [ ST_NAME is like %MAIN% ]
[properties: ST_NAME]
To gt2: Query: []
feature type: GISDATA.NAVTEQRDS_ARC
filter: [ ST_NAME is like %MAIN% ]
[properties: ST_NAME]
It's just NOT working.
So I delve a bit deeper, and have the ArcSDEQuery tell me what filter
it's using. In getSeSQLConstruct() there's a test like this (around
line 983):
if (!Filter.NONE.equals(sqlFilter)) {
...get the where clause for this query...
}
So I added an else to this if statement like so:
else {
LOGGER.warning("Filter was 'FILTER.NONE'");
}
Lo-and-behold, the line "Filter was 'FILTER.NONE'" appears in my log.
Weird! This is totally a supported filter as far as SDE is
concerned...why wouldn't it be showing up?
So I trace back and up through the geotools stack, and discover than in
the base-class org.geotools.filter.SQLEncoder on line 175 (also in
GT-2.2.x, by the way) the method "createFilterCapabilities()" creates
the default filter capabilities for a generic SQL encoder...and *doesn't
include* LIKE as a supported filter.
I went and added the line:
capabilities.addType(AbstractFilter.LIKE);
to that method, and everything worked just fine for me.
After all that, my question is as follows:
* Is this intentional? Is 'LIKE' excluded from the default filter
capabilities because some query engines just don't support 'LIKE' at
all? Or is this an oversight?
If it's an oversight, I can provide a patch to 2.2.x and 2.1.x
quickly...it's a one-liner.
If it's NOT an oversight, I can provide a patch to 2.2.x and 2.1.x to
get SDE support for LIKE filters, because (after all) it *does* in-fact
support them.
Anyone else bumped into this?
--saul
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