There's a single way to call the method, it's that you don't always have to supply the query item. The method signature is
queryByAttributes (map (mapObj, qitem (string), qstring (string), mode (int)); The qstring is given in a format compatible with the underlying driver. For the database drivers it's basically a where-clause. For others you use MapServer expression syntax. Some expression types (e.g. string matches or regex) require the qitem. To do a partial match you could use a regex, for example: layer.queryByAttributes(map, "myfield", "/myregex/", mapscript.MS_MULTIPLE); Steve From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Berend Veldkamp Sent: Friday, January 22, 2010 6:22 AM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] queryByAttributes syntax Hi, Where can I find more information about the queryByAttributes() function? I found http://mapserver.org/mapscript/php/index.html#layerobj-class , but it is not very detailed. By trial and error I found that for a PostGIS layer, I should use this syntax: layer.queryByAttributes(map, null, "myfield='searchValue'", mapscript.MS_MULTIPLE); but for shapefiles, it seems it should be: layer.queryByAttributes(map, "myfield", "searchValue", mapscript.MS_MULTIPLE); I am trying to write some generic code, but that's hard if there is no single way to call this method. Also, I haven't found a way yet to do a partial match on a shapefile (PostGIS supports 'LIKE') Regards, Berend Veldkamp
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