How can I get a list of rated files in folders/subfolders?

Question

I use a star rating system to select which photos I need to work on. Each subject has their own folder. Within each subject's folder are subfolders, one for each time I have a photo shoot with them. The hierarchy looks something like this.....
MainFolder
     Subject1
          Shoot1
          Shoot2
     Subject2
          Shoot1
     Subject3
          Shoot1
          Shoot2
          Shoot3
          Shoot4
     Subject4
          Shoot1
And so on. The image files are within each "Shoot" folder. The thing I'd like to accomplish is to have a way that I can start with the main folder and check through all subfolders where image files are and build a listing of all rated image files that I can parse through to see which images I need to work on.
Ideally I'd like to have them sorted from highest to lowest rating. I can do this by stepping through each folder and file within, checking the rating of each file, and continuing. What I'd really prefer to speed things up is to know if there is a way to check a folder's contents and filter it by rating. First, extract all the 5-star rated filenames, then 4-star, then 3-star, and so on. I cannot find anything in the documentation for Bridge scripting that allows for sorting/filtering folder contents. I currently have over 40,000 image files so checking through them one at a time even with a script would be a task which is why I'd like to know if there is a scripting method to filter out ratings within folders.
Any help would be greatly appreciated. I can write the script...at least most of it I think...but things would go so much nicer for me with a filter/sort.

Answer 1

How right you are Mark, you know I am gradually going senile
This will do the same but will allow re-runs without re-creating the collections or adding duplicates.
#target bridge
var folders =[];
var topLevel = app.document.presentationPath;
folders = FindAllFolders(topLevel, folders);
folders.unshift(topLevel);
//Create 5 collections to put the files into
var FiveStars = FourStars = ThreeStars = TwoStars = OneStar = undefined;
var colls =app.getCollections();
for(var a in colls){
    if(colls[a].name == "Five Stars") FiveStars= colls[a];
    if(colls[a].name == "Four Stars") FourStars= colls[a];
    if(colls[a].name == "Three Stars") ThreeStars= colls[a];
    if(colls[a].name == "Two Stars") TwoStars= colls[a];
    if(colls[a].name == "One Star") OneStar= colls[a];
if(FiveStars == undefined) FiveStars = app.createCollection("Five Stars");
if(FourStars == undefined) FourStars = app.createCollection("Four Stars");
if(ThreeStars == undefined) ThreeStars = app.createCollection("Three Stars");
if(TwoStars == undefined) TwoStars = app.createCollection("Two Stars");
if(OneStar == undefined) OneStar = app.createCollection("One Star");
for(var a in folders){
var PictureFiles = Folder(folders[a]).getFiles(/\.(jpg|jpe|jpeg|gif|eps|dng|bmp|tif|tiff|psd|crw|cr2|rle|dib|cin|dpx|ps|pcd|pict|vda|icb|vst|wbm|sct|pbm|flm|psb|exr|pcx|pdp|nef|dcr|dc2|erf|raf|orf|tga|mrw|mos|srf|pic|pct|pxr|pdd|pef|png|x3f|raw)$/i);
for(var p in PictureFiles){
var Rating  = new Thumbnail(PictureFiles[p]).rating;
if(Rating == undefined) Rating = 0;
switch(Number(Rating)){
    case 0 : break; /* No Rating */
    case 1 : if(!app.isCollectionMember(OneStar,new Thumbnail(PictureFiles[p]))) app.addCollectionMember(OneStar,new Thumbnail(PictureFiles[p])); break;
    case 2 : if(!app.isCollectionMember(TwoStars,new Thumbnail(PictureFiles[p]))) app.addCollectionMember(TwoStars,new Thumbnail(PictureFiles[p])); break;
    case 3 : if(!app.isCollectionMember(ThreeStars,new Thumbnail(PictureFiles[p]))) app.addCollectionMember(ThreeStars,new Thumbnail(PictureFiles[p])); break;
    case 4 : if(!app.isCollectionMember(FourStars,new Thumbnail(PictureFiles[p]))) app.addCollectionMember(FourStars,new Thumbnail(PictureFiles[p])); break;
    case 5 : if(!app.isCollectionMember(FiveStars,new Thumbnail(PictureFiles[p]))) app.addCollectionMember(FiveStars,new Thumbnail(PictureFiles[p])); break;
    default : break;
function FindAllFolders( srcFolderStr, destArray) {
var fileFolderArray = Folder( srcFolderStr ).getFiles();
for ( var i = 0; i < fileFolderArray.length; i++ ) {
  var fileFoldObj = fileFolderArray[i];
  if ( fileFoldObj instanceof File ) {  
  } else {
         destArray.push( Folder(fileFoldObj) );
  FindAllFolders( fileFoldObj.toString(), destArray );
return destArray;