> Is there any way to fetch the fields of the searched
> documents at once rather than looping through the
> found documents one by one....because it consumes lots
> of time and time increases by magnitude if the no. of
> documents found are more.
>
> This is how I am fetching the found documents ..
>
> count=1500000 (no. of documents found)
>
> for(int i=0 ; i < count;i++ )
> {
> Document doc =
> hits.doc(i);
> fields[i] =
> Long.parseLong(doc.get("FIELD"));
> }
>
> This takes around 2.5 minutes for fetching 1500000
> records which is unacceptable.
>
> Regards
> Karan
1.5 million in 2.5 minutes gives me 100 microseconds per iteration. (
correct me if I messed up the math. ) I'd be willing to bet the
Long.parseLong() is a significant part of that time because it iterates
through each character. You should profile your code, a simple
-Xrunhprof:cpu=samples should suffice. If the parse is a significant
percentage of total run time, > 30% or so. You can save iterations in
the parse by encoding and decoding using a very high radix, probably 36,
so it would be alphanumeric.
-vito
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