Question

Does iReport support MapReduce ? (with MongoDB)

I would like to know if I can put a Map Reduce query in this windows, or if not on the report on jasperserver (When You upload you .jrxml you have a “Query” tab)

Thanks

Answer 1

Yes, it does. For example:

{
  collectionName : 'dataByZipCode',
  sort : {
    'value.population' : -1,
  },
  mapReduce : {
    map : 'function () {
               emit (this.state, {population : this.pop});
             }',
    reduce : 'function (key, values) {
                  var total = 0;
                  for( var index = 0; index < values.length; index ++) {
                    total += values[index].population;
                  }
                  return {population : total}
               }',
    out : 'totalPopulation'
  }
}

See the Jaspersoft MongoDB Connector Query Reference