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From David Kerber <dcker...@verizon.net>
Subject Re: Code performance question #2
Date Mon, 07 Aug 2006 16:29:59 GMT
See my response to Peter; I can't control the format of that data string 
(it's from a different application).  I just need to split out the data 
fields and store them away in a disk file.  Or am I missing the point of 
your suggestion?

Dave


Leon Rosenberg wrote:

> thats ugly, why don't you tokenize it into string pairs, store the
> pairs and works with them?
> leon
>
> On 8/7/06, David Kerber <dckerber@verizon.net> wrote:
>
>> This code is part of a servlet running in TC 5.5.12, jre ver 1.5.0.6.
>>
>> I use this code to break out individual data fields from a line which is
>> structured as  "a=11111&b=22222&c=333333333&d=44444&e=5".  It is
>> executed for over 2 million data lines per day, so this routine is
>> executed over 10 million times per day.  All the fields are short ( < 10
>> chars) except the 5th one, which can be up to about 40 characters.  Is
>> there a more cpu-efficient way of doing this, or is this about as good
>> as it gets?
>>
>>     private static String getField ( String fieldName, String 
>> dataString ) {
>>         Integer    ii, kk;
>>
>>         ii = dataString.indexOf( fieldName + "=" );
>>         if (ii == -1 ) return null;
>>         kk = dataString.indexOf( "&", ii );
>>         if ( kk.equals( -1 )) {
>>             kk = dataString.length();
>>         }
>>         return ( dataString.substring( ii + 2, kk ));
>>     }
>>
>> TIA!
>> Dave
>



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