Dear list,
unfortunately Firefox splits xml nodes with a length greater than 4096
Bytes into several nodes. Due to that some format readers of OpenLayers
run into problems.
Let's take a look at WMSGetFeatureInfo-Format reader
(OpenLayers/lib/OpenLayers/Format/WMSGetFeatureInfo.js) especially at
this part of parseAttributes-function:
if (child.nodeType == 1) {
var grandchildren = child.childNodes;
if (grandchildren.length == 1) {
var grandchild = grandchildren[0];
if (grandchild.nodeType == 3 ||
grandchild.nodeType == 4) {
var name = (child.prefix) ?
child.nodeName.split(":")[1] :
child.nodeName;
var value = grandchild.nodeValue.replace(
this.regExes.trimSpace, "");
attributes[name] = value;
}
}
}
Here in Firefox with a node value length greater than 4096 there will be
more than one grandchildren and the whole attribute will be skipped.
This behaviour is to be found in several other format reader like
parseAttributes-function in OpenLayers/lib/OpenLayers/Format/GML.js.
One possible first workaround for that may be adding functionality to
merge nodeValues of all following grandchildren i.e.:
if (grandchildren.length > 1) {
var m = grandchildren.length;
var combinedText = '';
for (var j = 0; j < m; ++j) {
var oneGrandchild = grandchildren[j];
if (oneGrandchild.nodeType == 3 ||
oneGrandchild.nodeType == 4) {
combinedText +=
oneGrandchild.nodeValue.replace(this.regExes.trimSpace, "");
}
}
attributes[name] = combinedText;
}
Is this a known problem with format readers in combination with firefox
and node values with a length greater than 4096? Are there any existing
plans to solve this problem or even ideas for that?
Any comments appreciated!
Best,
Thorsten
--
Diplom-Informatiker Thorsten Müller
-Information Technology Consultant-
terrestris GmbH& Co. KG
Irmintrudisstraße 17
53111 Bonn
Tel: ++49 (0)228 / 96 28 99 -52
Fax: ++49 (0)228 / 96 28 99 -57
Email: [email protected]
Web: http://www.terrestris.de
Amtsgericht Bonn, HRA 6835
Komplementärin: terrestris Verwaltungs GmbH
vertreten durch: Hinrich Paulsen, Till Adams
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