evaljs mapreduce - testing the new API

README.md

How to run

1. Get index.js and test.js in the same (otherwise empty) directory.
2. Execute the following commands:

npm install pouchdb memdown pouchdb-abstract-mapreduce evaljs
node test.js

index.js

var abstractMapReduce = require('pouchdb-abstract-mapreduce');
var evaljs = require('evaljs');

var methods = abstractMapReduce({
  name: 'evaljsviews',
  mapper: function (mapFunDef, emit) {
    var env = new evaljs.Environment({emit: emit});
    return env.gen('(' + mapFunDef + ')')();
  },
  reducer:  function (reduceFunDef) {
    // TODO
  },
  ddocValidator: function (ddoc, viewName) {
    // TODO
  }
});

exports.evaljsQuery = methods.query;
exports.evaljsViewCleanup = methods.viewCleanup;

test.js

var PouchDB = require('pouchdb');
var plugin = require('./index');

PouchDB.plugin(plugin);

var db = new PouchDB('test', {db: require('memdown')});
db.bulkDocs([
  {
    _id: '_design/test',
    views: {
      test: {
        map: function (doc) {
          // a relatively 'complicated' view
          for (var i = 0; i < doc.roles.length; i++) {
            var role = doc.roles[i];
            if (role.indexOf('a') === -1) {
              emit(role);
            }
          }
        }.toString()
      }
    }
  },
  {
    roles: ['b', 'c', 'a']
  },
  {
    roles: ['e', 'f', 'b']
  }
]).then(function () {
  return db.evaljsQuery('test/test');
}).then(function (resp) {
  console.log(resp.rows.map(function (item) {
    return item.key; // [ 'b', 'b', 'c', 'e', 'f' ]
  }));
});