2011/5/23 Christian Grün <christian.gruen@gmail.com>

..and a last one: I'm glad to tell you that we've just added the
ft:count() function to our full-text module:

http://docs.basex.org/wiki/Full-Text_Functions#ft:count

Now you can either count the total number of occurrences of search
terms in your documents:

  let $terms := ('gauguin', 'pissarro')
  return ft:count( //*[text() contains text { $terms } ] )

...or return them hit by hit as e.g. follows:

  for $doc in doc('test')
  let $terms := ('gauguin', 'pissarro')
  for $hit score $s in $doc//*[text() contains text { $terms }]

  let $c := ft:count($hit[text() contains text { $terms }])

  return <hit score="{ $s }" count="{ $c }">{ $hit }</hit>

Please download the latest snapshot of BaseX to get the new feature working:

http://files.basex.org/releases/latest/

Christian
___________________________

On Mon, May 23, 2011 at 12:47 AM, Christian Grün

<christian.gruen@gmail.com> wrote:
> Wiard,
>
> Leo just gave me a hint that our ft:mark() function can used as well
> to count the number of occurrences of terms in a full-text query. I
> hope that the following example gives you some clue:
>
> for $doc in doc('test')
> let $terms := ('gauguin', 'pissarro')
> for $hit score $s in $doc//*[text() contains text { $terms }]
> let $c := count(ft:mark($hit[text() contains text { $terms }])/mark)
> return <hit score="{ $s }" count="{ $c }">{ $hit }</hit>
>
> Note that, in this case, the contains text expression must be specified twice.
> Christian
> ___________________________
>
> On Mon, May 23, 2011 at 12:32 AM, Christian Grün
> <christian.gruen@gmail.com> wrote:
>> Dear Wiard,
>>
>>>   for $n score $s in $doc//*[text() contains text {'gauguin','pissarro'}all
>>> ]
>>> return <hit score='{ $s }'>{ $n, count($n) }</hit>
>>> }
>>> </document>
>>> In my count($n) I get only the number 1.
>>
>> true, that doesn't make sense. I'm sorry it's not possible (at least
>> for now) to count the number of occurrences of search terms in a
>> single hit. It could make sense, however, to extend our own set of
>> full-text functions..
>>
>> http://docs.basex.org/wiki/Full-Text_Functions
>>
>> ..with a new function that counts the number of full-text matches;
>> something like:
>>
>> ft:count ( $node[ . contains text { "a", "b" } ] )
>>
>> Suggestions from everyone are welcome.
>> Christian
>> _____________________
>>
>> On Sun, May 22, 2011 at 5:40 PM, Wiard Vasen <wiard.vasen@gmail.com> wrote:
>>> Hi Christian,
>>> This weekend I tried to make a query which counts the number of times a
>>> certain combination of terms occurs in my repository of xml-files.
>>> I didn't succeed in finding a way to count the number of occurrences.
>>> Could you help me with this?
>>> I have attached the result-file from the query to this mail.
>>> As you have said in your last mail, the found letters have to be put in a
>>> sequence. After that the items in the sequence have to be counted.
>>> I was thinking of a method like:
>>> let $sequence := ( a method to get the items from the result)
>>>
>>> let $count := count($sequence)
>>>
>>> return
>>> <results>
>>> <count>{$count}</count>
>>> <items>
>>> {for $item in $sequence
>>> return
>>> <item>{$item}</item>
>>> }
>>> </items>
>>> </results>
>>>
>>>
>>>
>>> let $range := 1 to 800
>>> for $doc in collection('brievenvangogh')
>>> let $uri := base-uri($doc),
>>>    $num := substring($uri, string-length($uri) - 6, 3)
>>> where $num castable as xs:integer
>>> and xs:integer($num) = $range
>>> return <document uri='{$uri}'>{
>>>   for $n score $s in $doc//*[text() contains text {'gauguin','pissarro'}all
>>> ]
>>> return <hit score='{ $s }'>{ $n, count($n) }</hit>
>>> }
>>> </document>
>>> In my count($n) I get only the number 1.
>>
>