JavaScript 加入couchdb

Posted 2021-05-20

MAP
function(doc) {
  if(doc.doc_type == "User"){
    emit(doc._id , doc);
   }
  else if(doc.doc_type == "Message"){
    emit(doc.owner, doc)
  } 
}

REDUCE
function(keys, values)
{
  var result = {"messages":[]};
  for(var i=0; i<values.length; i++){
   if(values[i].doc_type == "User"){
     for(v in values[i]){
      result[v] = values[i][v];
     }  
   }
   else if(values[i].doc_type == "Message"){
    result['messages'].push( values[i] );
   } 
  }

  return result;
}