restli - While working w/ some rest.li services I found I needed to translate some of their data-structs to more usable/logical components... in JavaScript. This is what I have so far and it has been serving me well; however, I will concede that there may be a better approach :) Either case, creating this gist allows me to `npm install` without …

index.js

/**
TODO: these come back from restli requests... should we do anything w/ them?
X-LinkedIn-Type: com.linkedin.restli.common.ActionResponse
X-LinkedIn-Sub-Type: com.linkedin.janus.rest.api.JsonContentModel

*/

var keys = {
  '0': 'string',
  '1': 'int',
  '2': 'long',
  '5': 'boolean',
  '10': 'com.linkedin.janus.rest.api.List',
  '11': 'com.linkedin.janus.rest.api.Map',
  '13': 'com.linkedin.janus.rest.api.R2ContentModel',
  '21': 'com.linkedin.janus.rest.api.Location',
  '23': 'com.linkedin.janus.rest.api.GeoLocation',
  '26': 'com.linkedin.janus.rest.api.MonthYear',
  '27': 'com.linkedin.janus.rest.api.Duration',
  '28': 'com.linkedin.janus.rest.api.RichText',
  '31': 'com.linkedin.janus.rest.api.Locale',
  '32': 'com.linkedin.janus.rest.api.R2ContentMap',
  'company': 'company',
  'positions': 'positions',
  'memberArticleSet': 'memberArticleSet',
  'miniProfile': 'miniProfile',
  'multipleMiniProfiles': 'multipleMiniProfiles',
  'multipleMiniProfilePictures': 'multipleMiniProfilePictures',
  'M': 'M'
};

var fns = {
  'string': function(obj) {
    return obj.element['string'];
  },
  'int': function(obj) {
    return obj.element['int'];
  },
  'long': function(obj) {
    return obj.element['long'];
  },
  'boolean': function(obj) {
    return obj.element['boolean'];
  },
  'positions': function(obj) {
    return obj.contentMap.mapField;
  },
  'company': function(obj) {
    return obj.contentMap.mapField;
  },
  'M': function(obj) {
    return obj.duration; //TODO: any math here?
  },
  'memberArticleSet': function(obj) {
    return obj.contentMap.article || {};
  },
  'miniProfile': function(obj) {
    return obj.contentMap.mapField;
  },
  'multipleMiniProfiles': function(obj) {
    return obj.contentMap.mapField;
  },
  'multipleMiniProfilePictures': function(obj) {
    return obj.contentMap.mapField;
  },
  'com.linkedin.janus.rest.api.List': function(obj) {
    var visitedObj = obj
      .element['com.linkedin.janus.rest.api.List']
      .elements
      .map(function(element){
        return visit(element);
      });
    return visitedObj;
  },
  'com.linkedin.janus.rest.api.Map': function(obj) {
    var visitedObj = obj.element['com.linkedin.janus.rest.api.Map'].element;
    visitedObj = visitedObj.map(function(element) {
      var newO = {},
        k = visit(element.key),
        v = visit(element.value);
      newO[k] = v;
      return newO;
    });
    return visitedObj;
  },
  'com.linkedin.janus.rest.api.R2ContentModel': function(obj) {
    return obj.element['com.linkedin.janus.rest.api.R2ContentModel'].base;
  },
  'com.linkedin.janus.rest.api.Location': function(obj) {
    return obj.element['com.linkedin.janus.rest.api.Location'];
  },
  'com.linkedin.janus.rest.api.GeoLocation': function(obj) {
    return obj.element['com.linkedin.janus.rest.api.GeoLocation'];
  },
  'com.linkedin.janus.rest.api.MonthYear': function(obj) {
    return obj.element['com.linkedin.janus.rest.api.MonthYear'];
  },
  'com.linkedin.janus.rest.api.Duration': function(obj) {
    return obj.element['com.linkedin.janus.rest.api.Duration'];
  },
  'com.linkedin.janus.rest.api.RichText': function(obj) {
    return obj.element['com.linkedin.janus.rest.api.RichText'].rawText; // also include s a field called rtData and is an array. was empty, not sure what to do w/ it.
  },
  'com.linkedin.janus.rest.api.Locale': function(obj) {
    return obj.element['com.linkedin.janus.rest.api.Locale'];
  },
  'com.linkedin.janus.rest.api.R2ContentMap': function(obj) {
    return obj.element['com.linkedin.janus.rest.api.R2ContentMap'].mapField;
  }
};

function visit(obj){
  var visitedObj = obj;
  while (typeof(visitedObj.type) !== 'undefined' && typeof(visitedObj.type) !== 'object') {
    try{
      visitedObj = fns[keys[visitedObj.type]](visitedObj);
    }catch(unknownVisitor) {
      console.log('unknown visitor',visitedObj);
      throw unknownVisitor;
    }
  }
  return visitedObj;
}

function transform(obj) {
  var keys = typeof(obj) === 'object' && Object.keys(obj);
  if (keys) {
    keys.forEach(function(key) {
      var o = obj[key],
        visited = visit(o);

      obj[key] = visited;
      transform(visited);
    });
  }else if (Array.isArray(obj)){
    obj = obj.map(function(element) {
      transform(element);
      return visit(element);
    });
  }
  return obj;
}
module.exports = {
  transform: transform
};

package.json

{
  "name": "restli",
  "author": "Matt Powell",
  "description": "tbd",
  "main": "./index.js",
  "version": "0.0.1"
}

Now, you can run this: npm install https://gist.github.com/mattpowell/4976003/download