Re: [Geotools-devel] Encoding GML and Xlink

Rob van Swol Tue, 20 Apr 2010 23:59:53 -0700

Hi,
To answer my own question:
1) changing SurfacePropertyType into GeometryPropertyType in the schema and creating an empty Geometry does the trick!
2) looking at the code I discovered that the check on existing id's is done based on the id of the feature NOT on the id of the geometry! I am able to produce different gml:Polygon elements with the same gml:id.
[ Since I am using a DefaultFeatureCollection I cannot test if duplicate id's are handled correctly, because the FeatureCollection does not accept duplicate id's.

3) Remains one issue: the gml:boundedBy element of the featuremember refering to the geometry of the first is NULL; is there a way to repair this? (Or to leave this element out?)

Regards,
Rob van Swol

Here is the new result:

<?xml version="1.0" encoding="UTF-8"?>
<gml:FeatureCollection
    xsi:schemaLocation="http://geomatics.nlr.nl/IMDTool IMDTool.xsd http://www.opengis.net/gml http://schemas.opengis.net/gml/3.1.1/base/gml.xsd"
    xmlns:imdt="http://geomatics.nlr.nl/IMDTool"
    xmlns:gml="http://www.opengis.net/gml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <gml:featureMembers>
        <imdt:Effect gml:id="E1">
            <gml:boundedBy>
                <gml:Envelope srsName="http://www.opengis.net/gml/srs/epsg.xml#28992">
                    <gml:lowerCorner>127200.0 493100.0</gml:lowerCorner>
                    <gml:upperCorner>130000.0 495100.0</gml:upperCorner>
                </gml:Envelope>
            </gml:boundedBy>
            <imdt:id>E1</imdt:id>
            <imdt:title>effect1</imdt:title>
            <imdt:xeffecten></imdt:xeffecten>
            <imdt:xmaatregelen>M1</imdt:xmaatregelen>
            <imdt:geometrie>
                
                <gml:Polygon gml:id="piet">
                    <gml:name>piet</gml:name>
                    <gml:exterior>
                        <gml:LinearRing>
                            <gml:posList>127200.0 493100.0 127200.0 495100.0 130000.0 495100.0 130000.0 493100.0 127200.0 493100.0</gml:posList>
                        </gml:LinearRing>
                    </gml:exterior>
                </gml:Polygon>
            </imdt:geometrie>
        </imdt:Effect>
        <imdt:Effect gml:id="E2">
            <gml:boundedBy>
                <gml:Null>unknown</gml:Null>
            </gml:boundedBy>
            <imdt:id>E2</imdt:id>
            <imdt:title>Eerste effect</imdt:title>
            <imdt:xeffecten></imdt:xeffecten>
            <imdt:xmaatregelen>M1</imdt:xmaatregelen>
            <imdt:geometrie href=""/>
        </imdt:Effect>
    </gml:featureMembers>
</gml:FeatureCollection>
On 21-4-2010 3:51, Ben Caradoc-Davies wrote:

Andrea,

is XSIdRegistry turned off for simple features, for performance and 
memory reasons? I recall a discussion ...


Kind regards,
Ben.


On 20/04/10 20:46, Rob van Swol wrote:

Hi,
I have a simple GML3 Application schema which I use to encode a featurecollection to a gml document. However I do not succeed in getting duplicate gml:id's in geometry elements to be replaced by xlink:href attributes. Even worse: duplicate id's are accepted while I thought that the XSDIdRegistry would take care of that.
I am using geotools 2.6.3
Any suggestions?
Regards,

National Aerospace Laboratory - NLR

Dr. R.W. (Rob) van Swol

Senior Scientist
Space Department

Phone	+31(0)527 24 8252
E-mail	vans...@nlr.nl

NLR Dedicated to innovation in aerospace

The NLR disclaimer is valid for NLR e-mail messages.

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Re: [Geotools-devel] Encoding GML and Xlink

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