The basexgui startup file now contains:
BASEX_JVM="-Xmx8g -Xss4m $BASEX_JVM"
It helped the script a long way, but eventually it had to kneel. It works
fine though, on smaller datasets.
Maybe there is some other way to get the data over. I'll have a talk with
the guys providing the OAI-endpoint.
Thanks for the pointer to Xss!
Lars
2016-05-11 14:38 GMT+02:00 Dirk Kirsten <d...@basex.org>:
> Hello Lars,
>
> if you have a deep recursion Java will at some point hit its stack size
> limit. Have you already tried to simply increase the Java stack size, e.g.
> by passing the parameter -Xss2m to the JVM?
>
> Cheers
> Dirk
>
>
> On 05/11/2016 01:43 PM, Lars Johnsen wrote:
>
> The following code generates the error "Stack Overflow: try tail
> recursion?"
>
> The code reads in bibliographic data using OAI-PMH and updates a database
> for each chunk of data. With OAI-PMH, only part of the data is available
> for each request, so the server returns a resumption token if there are
> more data available.
>
> The xquery function making the queries is implemented recursively preceded
> by a database update request (see the last two lines) for each call. Is it
> db:add() that causes the stack overflow? The recursion cannot be placed
> further towards the end!
>
> declare %updating function local:getResumption($token) {
> if (empty($token)) then
> ()
> else
> let $http-request := http:send-request($http-option, $URL ||
> $token)
> let $result :=
> if ($http-request instance of node()) then
> $http-request
> else
> <http-err>{$http-request}</http-err>
>
> let $resume := $result//oai:resumptionToken/text()
> return (
> db:add($database,element chunk {$result//oai:metadata}, $path)
> ,
> local:getResumption($resume)
> )
> };
>
> Best,
> Lars
>
>
> --
> Dirk Kirsten, BaseX GmbH, http://basexgmbh.de
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>
