Hello Ivan, Thank you for the clarification.
It seems that there is an error at one page of the documentation [1], where the function 'file_to_string_session' is mentioned, but It doesn't seem to exist (Undefined procedure). I'll use file_to_string_output. Cristian. [1] http://docs.openlinksw.com/virtuoso/fn_xper_doc.html On Fri, Nov 13, 2009 at 4:35 PM, Ivan Mikhailov <[email protected]> wrote: > Christian, > > You may wish to use string session instead of string. > file_to_string_output() will produce one without even placing whole text > to memory (if it's longer than the threshold then most of it will stay > on disk). At the same time string session is a valid input for both > xper_doc() and xtree_doc(). > > The unsupported case of big XML is when a string value in the tree is > longer than 10M, i.e. 10Mb block of text without a single tag. The only > practical case I can recall for such an oddity is an ill formed mail in > HTML format that is a forward of a mail with huge attachment, so the > text of the attachment is placed into enormous "paragraph". The email > like that will not be parsed by both > xtree_doc() and xper_doc() because 10Mb is an universal and strick > threshold for strings in Virtuoso, even if strings are just parts of > bigger structures, not standalone values of some variables. > > For most of XSLTs, xtree is much better than xper nowadays, because > you'll probably never see an XML that does not fit into the RAM of a > modern PC. XPER allows to fetch a small portion of a big document > without loading it all in memory or to handle data bigger than the > amount of available RAM; an XSLT transformation on a PC does not belong > to any of these two cases if it process the whole document. > > Ivan. > > On Fri, 2009-11-13 at 16:06 -0300, Cristian Vasquez wrote: >> Sorry, >> >> It was an error when trying load an entity object using xtree_doc from >> a string longer than 10 megabytes. >> this issue was solved using xper_doc to operate over an 'XPER entity'. >> >> Thank you for your answer. >> >> Cristian. >> >> On Fri, Nov 13, 2009 at 2:28 PM, Ivan Mikhailov >> <[email protected]> wrote: >> > Aldo, >> > >> > What limit do you mean? We've handled tens of megabytes of XML as XML >> > trees and gigabytes of XMLs as "persistent XMLs" without any issues. >> > >> > Best Regards, >> > >> > Ivan Mikhailov >> > OpenLink Software >> > http://virtuoso.openlinksw.com > > >
