>That is horrible, and now I need to think :-(
>Ah - please reverse aWriter.close() and trans.commit().
Thats not going to do anything since I can see that its not in a
transaction when its in the while() loop.
IE. while its processing I can open another connection to the database
and see the updates its making in the while() loop. If it were in a
transaction then I couldnt see the updates until the commit.
dave
ps. The "invalid state" is happening because the updates arent in a
transaction. When the exception occurs there's no rollback.
pps. My "equalsExact" change isnt a performance improvement -- its a bug
fix. Its completely wrong the way it is. Right now you cannot flip the
direction of linestrings nor can you fix invalid geometries! If you try,
you'll either get no updating or exceptions.
private void process() throws Exception
{
DefaultTransaction trans = new DefaultTransaction();
FeatureWriter aWriter =
ds.getFeatureWriter(table_name,trans);
while (aWriter.hasNext())
{
Feature f = aWriter.next(); // get a feature
Geometry g = (Geometry) f.getAttribute(source_column);
Geometry g_gen = generalize(g,tolerance);
f.setAttribute(dest_colum,g_gen); // modify it
aWriter.write(); // write it to DB
}
trans.commit();
aWriter.close();
}
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