Hi,
I want to check if there is likely to be any problem with memory exhaustion
in the following scenario.
I will have text documents stored in a MarkLogic database that I will to
update using a large number of consecutive search/replaces, then finally
convert to XML.
It seems obvious to me that I could easily run out of memory if I adopt this
approach (and have hundreds of replaces applied to large text documents). In
this trivial example, I am simply converting the word "Document" to
"DOCUMENT" in three steps, which I would obviously do in one for real, but
just to show the method I originally considered...
let $Text :=
".............................................................. (large text
document).............................."
let $NewText1 := fn:replace($Text, "Doc", "DOC")
let $NewText2 := fn:replace($NewText1, "ume", "UME"))
let $NewText3 := fn:replace($NewText2, "nt", "NT"))
let $XML := xdmp:unquote($NewText3)
return
$XML
I am assuming that each variable contains a variant of the text document, so
memory will quickly become exhausted.
However, if I use xdmp:set(), would that solve the problem, because the
first variable content is being replaced, and the later variables have no
content at all?...
let $Text :=
".............................................................. (large text
document).............................."
let $NewText1 := fn:replace($Text, "Doc", "DOC")
let $NewText2 := xdmp:set($NewText1, fn:replace($NewText1, "ume",
"UME"))
let $NewText3 := xdmp:set($NewText1, fn:replace($NewText1, "nt", "NT"))
let $XML := xdmp:unquote($NewText1)
return
$XML
Or would I still expect old text to still be occupying memory (lack of
string garbage collection)?
Thanks,
Neil.
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