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Re: Searching object using AND and OR

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Andrew Poulos <ap_prog@hotmail.com> wrote:

> I've got a large (potentially hundreds of indexes) object that looks 
> something like
> 
> var obj = {
>    "a":["apple","banana"],
>    "b":["fish","apple","car","run","jump"],
>    "c":["car,"truck","motorcycle","banana"],
>    "d":["banana","boat","car","bicycle"],
>    ...
> };
> 
> Where array elements can only be individual words.
> 
> Its straightforward enough to go through the object and return all 
> indexes where a "search" word matches an element in the index's array 
> but I'm stuck trying to work out how to even approach allowing the use 
> of "AND" and "OR".
> 
> For example, to search for
>    banana AND (bicycle OR motorcycle)
> would return "c" and "d".
> 
> Andrew Poulos

Using your object format...

Example to case-sensitively search for:
banana AND (bicycle OR motorcycle)

var obj = {
  "a":["apple","banana"],
  "b":["fish","apple","car","run","jump"],
  "c":["car","truck","motorcycle","banana"],
  "d":["banana","boat","car","bicycle"]
};

var result = [];

//test each obj arrays
for (var i in obj) {
  //skip array if no banana
  if (obj[i].indexOf('banana') < 0) continue;
  //check for bicycle or motorcycle
  //in each array element
  for (var j = 0; j < obj[i].length; j++) {
    if (
      (obj[i][j] == 'bicycle') ||
      (obj[i][j] == 'motorcycle')
    ) {
      //found one. save result
      result.push(i);
      //no need to search further
      break;
    }
  }
}

console.log(result);
//shows: ["c", "d"]

//or...
console.log(result.join(''));
//shows: cd

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Searching object using AND and OR Andrew Poulos <ap_prog@hotmail.com> - 2012-10-11 09:36 +1100
  Re: Searching object using AND and OR Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-10-11 01:13 +0200
  Re: Searching object using AND and OR Dr J R Stockton <reply1241@merlyn.demon.co.uk.invalid> - 2012-10-11 20:00 +0100
    Re: Searching object using AND and OR Gene Wirchenko <genew@ocis.net> - 2012-10-11 16:39 -0700
  Re: Searching object using AND and OR JJ <jaejunks_at@_googlemail_dot._com> - 2012-10-12 13:25 +0000

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