Re: [basex-talk] Is it right query using ft:search ?

19 Nov 2013

      Hello John,

I guess your second query isn't really doing what you intend it to do.
Actually, it will yield the same output as your first query (the child
step /MainDesc will only have the effect that fragments without MainDesc
as a child will be filtered out). I guess the following query should
work (at least if I understood correctly what you are trying to achieve):

for $x in ft:search("docMaster", ("emf","waves"), map{'mode':='all
words'})/parent::*:MainDesc/parent::*:Doc
return $x/DocTitle/text()

Thereby, you using the parent step you assure that the found text node
was actually inside a MainDesc node.

Please also note that there is a difference between an ancestor step and
a parent step and as you seem to know your structure it might be easier
and faster to simply use parent.

Cheers,
Dirk

On 19/11/13 09:08, John Best wrote:
...
Hi Team,
Below is my XML Structure -
<Docs>
 <Doc>
    <DocTitle C="1"></DocTitle>
    <MainDesc></MainDesc>
    <FullDesc></FullDesc>
 </Doc>
 <Doc>
    <DocTitle C="2"></DocTitle>
    <MainDesc></MainDesc>
    <FullDesc></FullDesc>
 </Doc>
............
............
</Docs>
I have to search the Full Text DB of above documents
with 3 different options -
1. Complete Document
2. Only in MainDesc (Main Description)
3. Only in FullDesc (Full Description)
Below is the query, using ft:search, for the first options, mentioned above
for $x in ft:search("docMaster", ("emf","waves"), map{'mode':='all
words'})/ancestor::*:Doc
return $x/DocTitle/text()
Now, this is for the 2nd options, i.e; for MainDesc -
for $x in ft:search("docMaster", ("emf","waves"), map{'mode':='all
words'})/ancestor::*:Doc/MainDesc
return $x/DocTitle/text()
Is it right ? I am little bit confused..
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