Hi,
You oculd create a wfs getFeature request with a Filter matching a unique value
of your object to locate.
You’ll get back a result with you can parse to find the geometry of the object
and call setCentre on the map or so or zoomToExtent.
Other way to do is is you have already a Vector Layer with wfs protocol added
to it something like this:
function findObject(propertyName, uniqueValue) {
var uniqueFilter = new
OpenLayers.Filter.Comparison(
{
type:
OpenLayers.Filter.Comparison.EQUAL_TO,
property:
propertyName,
value:
uniqueValue
}
);
var response = wfsLayer.protocol.read({
maxFeatures: 1,
filter: uniqueFilter,
callback: function(result)
{zoomToTheExtentOfTheResultingFeature(result);}
});
}
function zoomToTheExtentOfTheResultingFeature(result) {
if (result.features.length > 0) {
var feature = result.features[0];
//var center =
feature.geometry.getBounds().getCenterLonLat();
//map.setCenter(center);
var ext = feature.geometry.getBounds();
map.zoomToExtent(ext);
}
}
Hope this helps
Cheers Kris
From: users-boun...@openlayers.org [mailto:users-boun...@openlayers.org] On
Behalf Of fsalas
Sent: Thursday, April 30, 2009 5:53 PM
To: users@openlayers.org
Subject: [OpenLayers-Users] Locate objetcts in the maps
Importance: High
Hi all,
I have a little problem..
I need locate one objetcs Ej. lake,house , etc. by your fields value. And make
a Zoom to extend this objects
How impements this code , I have geoserver.
Does anyone have a function for this task?
Regards
Francisco Salas
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