Hi Michael,
I suggest for any reasonable size dataset you use the StreamingParser:
StreamingParser parser =
new StreamingParser(configuration,"//gml:featureMember");
try{
Feature f = null;
while ( ( f = parser.parse() ) != null ) {
...
}
}...
}
Some more info about streaming here:
http://docs.codehaus.org/display/GEOTDOC/GML+XML+Support
-Justin
Michael Lutz wrote:
> We are running into big memory problems when trying to parse large GML
> files containing WFS feature collections (e.g. 25000 points, about 25MB
> as GML) using the following code:
>
> public static FeatureCollection readFromInputStream(InputStream in) {
> Configuration configuration = new WFSConfiguration();
> Parser parser = new Parser(configuration);
> try{
> FeatureCollection fc = (FeatureCollection) parser.parse( in );
> in.close();
> return fc;
> } ...
> }
>
> For this example, the used memory goes up to 800MB. After the parsing,
> it goes down again to around 60MB.
>
> Any ideas why this is, and where we should be looking for memory leaks?
>
> Cheers,
> Michael
>
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--
Justin Deoliveira
The Open Planning Project
http://topp.openplans.org
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