[SR-Users] how to match exact string value in mtree (Uri Shacked)

[Javier Gallart]

Hi

Maybe I didn't understand your scenario, but I don't see how to do it with
the dialplan module. Let's say you have two entries in your dialplan table:
09555333 (this should go first)
09555*
If your string is 09555444 you will still get the second entry....


Regards

Javi



On Fri, Feb 17, 2012 at 3:11 PM, Uri Shacked <ushacked at gmail.com> wrote:

> hi,
>
> what do you think about the Dialplan module? it can probably do the trick
> as well...
>
> cheers,
>
> On Fri, Feb 17, 2012 at 10:18 AM, Daniel-Constantin Mierla <
> miconda at gmail.com> wrote:
>
>> Hello,
>>
>>
>> On 2/16/12 2:51 PM, Javier Gallart wrote:
>>
>> Hello Uri
>>
>> I had similar needs and I found the ndb_redis module more suited for that
>> type of task. Instead of a tree you have a hash like this: tname tprefix
>> tvalue. If you do a hget nts $avp(DID) and you get a not null value you
>> have found your exact match. It works very  well for me and the time it
>> takes for that "query" is barely noticeable. Of course redis does not
>> address items like persistence, etc the same way a rdbms does.
>>
>>
>> for hash tables in config, the alternative is using htable module. Then
>> the selection is done on exact match, no prefix matching. mtree is suitable
>> for storing keys that are composed from a limited set of characters (like
>> numbers, 0-9 digits only), otherwise becomes too memory consuming. For keys
>> that are composed from any character and need exact match, hash table
>> structures are more suitable, no matter if it is via htable module or
>> something else like redis.
>>
>> Cheers,
>> Daniel
>>
>>   Hope it helps.
>>
>> Regards
>>
>> Javi
>>
>> On Thu, Feb 16, 2012 at 12:00 PM, <sr-users-request at lists.sip-router.org>wrote:
>>
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>>>   1. how to match exact string value in mtree (Uri Shacked)
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>>> ----------------------------------------------------------------------
>>>
>>> Message: 1
>>> Date: Thu, 16 Feb 2012 12:54:50 +0200
>>> From: Uri Shacked <ushacked at gmail.com>
>>> Subject: [SR-Users] how to match exact string value in mtree
>>> To: "SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) -
>>>        Users   Mailing List" <sr-users at lists.sip-router.org>
>>> Message-ID:
>>>        <CAMMbDhTFNXAE-K88=
>>> AeMjO7AnA_QJV3Ajj3AH-AxemXN3ze6HQ at mail.gmail.com>
>>> Content-Type: text/plain; charset="iso-8859-1"
>>>
>>> Hi,
>>>
>>> I am using Mtree to match prefix numbers, some of them starts with 0 or
>>> characters like D for example.
>>> so, the mtree param is like this:
>>>
>>> modparam("mtree", "db_url", CFGDB)
>>> modparam("mtree", "mtree",
>>> "name=nts;dbtable=service_numbers_view;type=0;")
>>> modpmodparam("mtree", "char_list", "0123456789*+#YMDabcdefgh")
>>> modparam("mtree", "pv_value", "$avp(mtval)")
>>> modparam("mtree", "pv_values", "$avp(mtvals)")
>>>
>>> The thing is, that i tried all:
>>>
>>> if(!mt_match("nts", "$avp(DID)","1"))
>>> if(!mt_match("nts", "$avp(DID)","2"))
>>> if(!mt_match("nts", "$avp(DID)","0"))
>>>
>>> and lets say i have the both prefix in the nts mtree:
>>> 09555
>>> 09555333
>>>
>>> And the prefix i search for is  $avp(DID)=09555444
>>>
>>> I allwasy get the 09555 because it is the longest match.
>>> I need exact match.....
>>>
>>> how do i do that?
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>>
>>
>>
>> _______________________________________________
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>>
>> --
>> Daniel-Constantin Mierla -- http://www.asipto.comhttp://linkedin.com/in/miconda -- http://twitter.com/miconda
>>
>>
>
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