[MarkLogic Dev General] Regarding md5

[Manoj]

Hi wayne,
    I have attached  the sample files i created and the xquery code for
which md5 comaprison returned false.

Thanks & Regards
Manoj

On Wed, Dec 29, 2010 at 2:57 AM, Jason Hunter <jhunter at marklogic.com> wrote:

> It returns true for me.  You're 100% sure you're getting false?
>
> -jh-
>
> On Dec 28, 2010, at 11:47 PM, Manoj wrote:
>
> Hi Wayne,
>   Thanks for the suggestion. We will try using the xdmp:quote function
> before calculating md5.
>
> Another thing we noticed but forgot to mention earlier is given below
>
> In file1.xml we stored the following content <root><a>a</a><b>b</b></root>
> and in file2.xml we store <root><a>a</a><z><x>b</x></z></root>
>
> when we executed the following code
> let $a := fn:doc('/file1.xml')
> let $b := fn:doc('/file2.xml')
> let $x := xdmp:md5($a)
> let $y := xdmp:md5($b)
>
> return (deep-equal($x,$y))
>
> This returned false. This is more or less similar to first part of the
> earlier code but the current one returns a document node. Ideally in this
> case also the md5 should return same for both the $x and $y right? can you
> throw some light?
>
>
> Thanks & Regards
> Manoj
>
>
> On Wed, Dec 29, 2010 at 2:16 AM, Wayne Feick <Wayne.Feick at marklogic.com>wrote:
>
>>  Hi Manoj,
>>
>> The md5 function takes a string, so you're only acting on the character data. Try using xdmp:quote() to turn the XML tree into text and then calling md5() on the quoted text.
>>
>> Wayne
>>
>> Manoj <manojjayaraman at gmail.com> wrote:
>>
>>
>>  Hi all,
>>    I was trying my hand on the xdmp:md5 api as we intended to use it for
>> our project. When we trying to understand how this md5 api works and were
>> trying some scenarios. One such scenario which we tested is given below
>>
>> let $xml1 :=<root><a>a</a><b>b</b></root>
>> let $xml2 :=<root><a>a</a><z><x>b</x></z></root>
>> let $xml11 :='<root><a>a</a><b>b</b></root>'
>> let $xml21 :='<root><a>a</a><z><x>b</x></z></root>'
>> let $a := xdmp:md5($xml1)
>> let $b := xdmp:md5($xml2)
>> let $a1 := xdmp:md5($xml11)
>> let $b1 := xdmp:md5($xml21)
>> return (deep-equal($a,$b),deep-equal($a1,$b1))
>>  In the above code md5 value for $a and $b are identical inspite of $xml2
>> having additional node. Where as $a1 and $b1 returned different md5 values.
>> It would be great if someone can throw some light on how md5 value is
>> generated in marklogic and what are things it considers while generating the
>> md5 value.
>>
>> Regards,
>> Manoj
>>
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>>
>>
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