Adding functions in search index of loudant

Question

I have a Json document in cloudant as:

{
  \"_id\": \"3-f812228f45b5f4e4962505561953ew245\",
  \"_rev\": \"3-f812228f45b5f4e496250556195372b2\",
  \"wiki_page\":         


        

Answer 1

Update

Your update looks good, but there is still one issue: you are not returning the list from the permuteword function. I believe you also need to remove calls to console.log. Once I did these two things I was able to get it to work with Cloudant using the following search queries (I also changed your hard-coded call with "african lion" back to doc.name):

default:"african"
default:"african lion"
default:"lion"
default:"lion african"

Here is the final script:

function(doc){
  var list = [];
  function permute(ss, used, res, level, list){
    if(level==ss.length&&res!==""){
        list.push(res);
        return;
    }
    for(var i=0; i<ss.length; i++){
        if (used[i]===true){
          continue;
        }

        if(level>=0){
          if (res!="" && list.indexOf(res)<0){
              list.push(res.trim());
          }

          used[i]=true;
          permute(ss, used, res+" "+ss[i], level+1, list)
          used[i]=false;
        }
      }
  }
  function permuteword(s){
    var ss=s.split(" ");
    var used = [];
    var res = "";
    list = [];
    permute(ss, used, res, 0, list);
    return list;
  }

  if (doc.name) {
    var contentIndex=permuteword(doc.name);
    for(var i=0; i<contentIndex.length; i++){
      index("default", contentIndex[i]);
    }
  }
}

Updated JSFiddle:

https://jsfiddle.net/14e7L3gw/1/

Original Answer

I believe there are issues with your Javascript. The permuteword function is not returning any results. See this JSFiddle:

https://jsfiddle.net/14e7L3gw/

Note: I added some logging and commented out the call to index. Run with your browser debugger to see the output.

Here is what is happening:

1. The first call to permuteword calls permute(["african","lion"], [], "", 0, []);
2. The first if in permuteword fails because level (0) != ss.length() (2) and res == "".
3. Then the function loops through ss, but never does anything because level = 0.
4. Ultimately permuteword returns an empty array, so nothing gets indexed.