Thanks Andreas,
This sort of code snippet is invaluable to me and anyone else who may need
it.
I have some questions below.
On 8/1/07, Andreas Hocevar < [EMAIL PROTECTED]> wrote:
>
> Al,
>
> On 8/1/07, Al Byers < [EMAIL PROTECTED]> wrote:
> > I have a case where I have several compatible, regional, road datasets
> for
> > one state and I would like to simplify my coding. Is this a place for
> > MergeModel or is there a better way to combine these datasets.
>
> MergeModel is definitely a way to go. The following config snippets
> should get you going:
What is the advantage of using MergeModel vs. loading my layers into the
mainPane owsContext ResourceList (which works. I can't get the MergeModel
approach to work. I am tracing thru to see what is going on). Do you only
use MergeModel for doing WFS queries?
<Model id="model1">
> <defaultModelUrl>model1.xml</defaultModelUrl>
> </Model>
> <Model id="model2">
> <defaultModelUrl>model2.xml</defaultModelUrl>
> </Model>
> <MergeModel id="mergeModel">
> <widgets>
> <GmlRendererOL...
> ...>
> </widgets>
> <merges>
> <merge>model1</merge>
> <merge>model2</merge>
> </merges>
> <idXPath>//gml:featureMember/*</idXPath>
> <idAttribute>fid</idAttribute>
Are these two lines above required if I just want to display layers on the
map?
</MergeModel>
I am going to paste in my config file just in case it may help:
<Model id="central">
<defaultModelUrl>central.xml</defaultModelUrl>
</Model>
<MergeModel id="mergemodel">
<widgets>
<GmlRendererOL id="mergeGmlRenderer">
<htmlTagId>mainMapPane</htmlTagId>
<targetModel>mainMap</targetModel>
<mapContainerId>mainMapContainer</mapContainerId>
<lineColor>#FF0000</lineColor>
<lineWidth>1</lineWidth>
<pointDiameter>20</pointDiameter>
</GmlRendererOL>
</widgets>
<merges>
<merge>central</merge>
</merges>
</MergeModel>
The <merge> tags bring in your source models. the first will be
> rendered on top, the last on bottom (if you use GmlRenderer).
>
> <idXPath> is the xpath to your node that has the feature id
> <idAttribute> is the name of the feature id attribute
> These two are needed to add a sourceModel attribute to each feature in
> the same element that holds the feature id attribute.
>
> I hope this helps.
>
> Regards,
> Andreas.
>
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