> -----Original Message----- > From: UMN MapServer Users List > [mailto:[EMAIL PROTECTED] On Behalf Of Maarten Plieger > Sent: 19 October, 2007 5:44 AM > To: [email protected] > Subject: [UMN_MAPSERVER-USERS] Serving many shapefiles through WFS > > Hi all, > Maybe someone can help me out with this problem: > What is the best solution for serving thousands of shapefiles > through a Web Feature Service? > These shapefiles are files with daily observations. Every day > a new shapefile is generated and needs to be served. >
If you're serving observations, you might want to consider MapServer's OGC Sensor Observation Service (SOS) support. > Currently I make use of a script which reads the directory > with the names of the shapefiles, this script creates for > each shapefile a layer in the mapfile. This means that there > is a layer for each shapefile, resulting in many layers. The > disadvantage is that the map file will grow to infinite in > time, because every day a new file is added to the mapfile. > > In the case of a WMS, it is possible to make use of a > TILEINDEX which contains the names of these shapefiles and > their corresponding time/date of observation. With the WMS > TIME parameter one can select the desired file. In this case > only one layer is needed, the file with the TILEINDEX is the > only thing that needs to be updated. > > It seems that this is not possible with a Web Feature > Service. Am i right with this? > So how can i serve all these shapefiles through WFS? > WFS 1.0.0 doesn't support the TIME parameter natively. SOS supports eventtime as part of the GetObservation operation. I've setup a dummy TILEINDEX'd dataset and have tried a GetObservation request: (tests are doing using trunk): http://devgeo.cciw.ca/cgi-bin/mapserv/sostest?service=SOS&version=1.0.0&; request=GetObservation&offering=Water&observedproperty=WaterQuality&resp onseFormat=text/xml;%20subtype=om/0.0.0 http://devgeo.cciw.ca/cgi-bin/mapserv/sostest?service=SOS&version=1.0.0&; request=GetObservation&offering=Water&observedproperty=test_op&responseF ormat=text/xml;%20subtype=om/0.0.0&eventtime=%3Cgml:TimePeriod%3E%3Cgml: beginPosition%3E2001-07-11%3C/gml:beginPosition%3E%3Cgml:endPosition%3E2 007-07-13%3C/gml:endPosition%3E%3C/gml:TimePeriod%3E ...which renders no results, but it should. I will look further into this. ..Tom > Thanks in advance, > Maarten Plieger >
