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Copyright © 2016 Open Geospatial Consortium.
service=WFS version=2.5.0
xmlns=http:www.someserver.commyns xmlns:cw=http:schemas.cubewerx.comnamespacesnull
xmlns:fes=http:www.opengis.netfes2.5 xmlns:wfs=http:www.opengis.netwfs2.5
xmlns:xsi=http:www.w3.org2001XMLSchema-instance xsi:schemaLocation=http:www.opengis.netwfs2.5
http:www.pvretano.comschemaswfs2.5wfs.xsd http:schemas.cubewerx.comnamespacesnull
http:www.pvretano.comcubewerxcubeserv.cgi?datastore=ows11amp;service=WFSa mp;version=2.5amp;request=DescribeFeatureTypeamp;typeName=wwAccess
wfs:Insert wwAccess
Geometry gml:Point gml:id=GID1 srsName=urn:ogc:def:crs:EPSG::4326
gml:pos-43.603 172.574gml:pos gml:Point
Geometry uidWWMH-4078uid
AccessTypeStandard ManholeAccessType SourceId2604S00330SourceId
LocationCeNon VerifiedLocationCe NearestPru1NearestPru
HansenId63945HansenId n5734056.64n
e2475523.95e WwAccessID4078WwAccessID
Compkey8148Compkey HeightAbov30.8HeightAbov
Constructi1Constructi Depth0.9Depth
MaintenancCity Water and WasteMaintenanc ServiceStaIn ServiceServiceSta
YearLaid1983-01-01YearLaid SAPInternaIE000000000010754107SAPInterna
LastEditDa2013-10-18LastEditDa LastEditUsCCITY\TredinnickCLastEditUs
Photo mimeType=imagejpeg9j4AAQSkZJRgABAQEAZABkAAD2wBDAAIBAQIBAQICAgICAgICAwUDA
wMDAwYEBAMFBwYHBwcG BwcICQsJCAgKCAcHCg0KCgsMDAwMBwkODw0MDgsMDAz2wBDAQICAgMDAwYDAwYMCAcIDAwMDAwM
DAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAzwAARCAISArwDAREA AhEBAxEB8QAHQAAAAcBAQEAAAAAAAAAAAAAAQIDBAUGBwAICfEAEsQAAECBAQFAgQEBAQFAgUB
CQECEQADBCEFEjFBBhMiUWEHcQgUMoEjQpGhUrHB0RUz4fAJFiRi8UNyFyY0U5IlNXMYGYKTY6Ky -- more base64 data here removed for the sake of brevity --
ajwCjieof9yhCapM5wpQLjfwI9A39pjg4Jh4JywtIC1AZhvG1PFQ58mYEVU3nJEmWBMYX P90pfAlKaarInqVqN4vDckbwANhzTVU3lpPMmODrmMasv93+IDx+A+kVk3kpFmf8A5GNXD+En
Lz2pH+G1c0LR+LM+kmMWv9oPNbglZ9XN58r8WZdzGGEQ3kISK2cxFmXEYv8A4Yseyayd zkizNFfmPaLxEgjPrp7Sxpv0D85h2T+438f8ASAJ7nZPhoto
wwAccess wfs:Insert
wfs:Transaction
Simply POSTing this message to the servers transaction controller resource will create a new instance of the wwAccess feature that also includes a photo valued property.
Copyright © 2016 Open Geospatial Consortium.
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7.4 Update a multimedia-valued property
Updating a feature with a multimedia value proceeds in the usual manner; a Transaction
message is posted to the transaction handler of the server. Multimedia values can either
be encoded in-line or referenced in which case the server shall retrieve the multimedia value prior to updating the feature. Here is an example of an update message that updates
the value of the Photo property in the wwAccess feature:
?xml version=1.0 ? wfs:Transaction
version=2.5.0 service=WFS
xmlns=http:www.someserver.commyns xmlns:cw=http:schemas.cubewerx.comnamespacesnull
xmlns:fes=http:www.opengis.netfes2.5 xmlns:wfs=http:www.opengis.netwfs2.5
xmlns:xsi=http:www.w3.org2001XMLSchema-instance xsi:schemaLocation=http:www.opengis.netwfs2.5
http:www.pvretano.comschemaswfs2.5wfs.xsd http:schemas.cubewerx.comnamespacesnull
http:www.pvretano.comcubewerxcubeserv.cgi?datastore=ows11amp;servi ce=WFSamp;version=2.5amp;request=DescribeFeatureTypeamp;typeName=wwA
ccess wfs:Update typeName=wwAccess
wfs:Property wfs:ValueReferencePhotowfs:ValueReference
wfs:Value Photo
mimeType=imagejpeg9j4AAQSkZJRgABAQAAAQABAADgA7Q1JFQVRPUjogZ2Qta nBlZyB2MS4wICh1c2luZyBJSkcg
SlBFRyB2NjIpLCBxdWFsaXR5ID0gNjUK9sAQwALCAgKCAcLCgkKDQwLDREcEhEPDxEiGRo UHCkk
KyooJCcnLTJANy0wPTAnJzhMOT1DRUhJSCs2T1VORlRAR0hF9sAQwEMDQ0RDxEhEhIhRS4 nLkVF
RUVFRUVFRUVFRUVFRUVFRUVFRUVFRUVFRUVFRUVFRUVFRUVFRUVFRUVFRUVFRUVF8AAEQg BgAHg
... more base64 encoded image data here -- 8ZjG51B92FZwY2aCTc4IqyjVTjli7yx99CpvOiHLaPvsVpcklJy2Kg1LAI8v+BClWaL
JJlj AO+xUdLE1kwEsbHI4DCk9io7mRmkpN6wB5fzpN63h+dc50C0lJvX+8Pzo3reH50hC5o
Jpu5f 7wOk3rAHh+dADqKbuX+8Pzo3LAHhQA6k60m5f7wOk3D1H50wFpabuHqPzo3D+8PzpAK
aa33T RuH94fnSMw2nkdPWgD2Q==Photo
wfs:Value wfs:Property
fes:Filter fes:ResourceId
rid=CWFID.WWACCESS.0.34723.BA89DFD04C0B73161F20020000 fes:Filter
wfs:Update wfs:Transaction
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Copyright © 2016 Open Geospatial Consortium.
7.5 Query
7.5.1 Feature query
In a query response, the CubeWerx server encodes multimedia property values by reference rather than encoding the values in-line in order to keep the bulk of the response
down. Here is an example of a REST URL that returns a wwAccess feature with a photo:
http:www.pvretano.comcubewerxcubeservdefaultwfs2.5.0ows11wwAccessCWFI D.WWACCESS.0.34729.BA89DFD04C0B73161F20020000
. Resolving the href URL that is the value of the Photo property will retrieve the image.
Although not yet implemented in the CubeWerx server, in the future a client would be able to use the resolve parameters see OGC 09-025r2 clause 7.6.4 to control whether
the multimedia data is encoded in-line or not [resolve=none|local means that the value is referenced; resolve=remote|all means that the value is encoded in-line in the response].
NOTE 1: If you follow the above link in your browser, the response may be HTML as the browser sets the Accept header to prefer HTML output. Adding the f parameter allows GML to
be returned: http:www.pvretano.comcubewerxcubeservdefaultwfs2.5.0ows11wwAccessCWFID.WW
ACCESS.0.34729.BA89DFD04C0B73161F20020000?f=applicationgml2Bxml;20version=3 .2
NOTE 2: The editor is still working of the GeoJSON
generation of multimedia values but the pattern will be that established for GML i.e. the value shall be encoded either in line or by
reference depending on the value of the resolve query parameter.
7.5.2 Property Value query
Getting the multimedia value of a property is simply a matter of using a GetPropertyValue
operation or referencing the property values URL. Here is an example of the latter:
http:www.pvretano.comcubewerxcubeservdefaultwfs2.5.0ows11wwAccessCWFI D.WWACCESS.0.34709.BA89DFD04C0B73161F20020000photo?f=applicationgml
2Bxml;+version=3.2 .
This is very nice but it would be better to be able to stream the actual or native binary value without the response container. In this way a client, say a browser, can handle the
multimedia value in whatever manner it has been configured to do so e.g. a browser could display a photo, or play the audio or video clip.
The initial idea for streaming multimedia values from a WFS was to define a new operation, similar to the one found in the
CSW-ebRIM profile of the catalogue , called
GetRepositoryItem . However, a better approach is to use what is already defined in the
WFS; that is, the GetPropertyValue
operation.
