I have attempted to extend this fiddle
https://jsfiddle.net/rn3ja9n4/
here
https://jsfiddle.net/thyfoubq/32/
but it is unclear what I should use to power the dc.selectmenu or if the it is even capable of working in the multi-key scenario.
Is this possible?
I have tried several variations of this but i can't seem to get the filter to work with the composite key or the single branch key
var storedim =ndx.dimension(function(d){ return [d.store]})
var storegroup =storedim.group()
storeselect
.dimension(storedim)
.group(storegroup)
.multiple(true)
.size(5)
.controlsUseVisibility(true)
.title(kv => kv.key);
----------------------- possible solution that appears to work---------
---change the group to remove empty bins
var suppliersSumGroup = remove_empty_bins(suppliersSumDistinct.group().reduceSum( d => d.earnings ));
function remove_empty_bins(source_group) {
return {
all:function () {
return source_group.all().filter(function(d) {
return d.value !=0; //appears to work borrowed from another SO post
//unsure which one but it seems logical and works for this example
});
}
};
}
Related
I have a group for which elements after reduction look like this pseudocode :
{
key:"somevalue",
value: {
sum: the_total,
names:{
a: a_number,
b: b_number,
c:c_number
}
}
}
In my dc-js geoChoropleth graph the valueAccessor is (d) => d.value.sum
In my title, I would like to use the names component of my reduction. But when I use .title((d) => {...}), I can onjly access the key and the value resulting from the valueAccessor function instead of the original record.
Is that meant to be ?
This is a peculiarity of the geoChoropleth chart.
Most charts bind the group data directly to chart elements, but since the geoChoropleth chart has two sources of data, the map and the group, it binds the map data and hides the group data.
Here is the direct culprit:
_renderTitles (regionG, layerIndex, data) {
if (this.renderTitle()) {
regionG.selectAll('title').text(d => {
const key = this._getKey(layerIndex, d);
const value = data[key];
return this.title()({key: key, value: value});
});
}
}
It is creating key/value objects itself, and the value, as you deduced, comes from the valueAccessor:
_generateLayeredData () {
const data = {};
const groupAll = this.data();
for (let i = 0; i < groupAll.length; ++i) {
data[this.keyAccessor()(groupAll[i])] = this.valueAccessor()(groupAll[i]);
}
return data;
}
Sorry this is not a complete answer, but I would suggest adding a pretransition handler that replaces the titles, or alternately, using the key passed to the title accessor to lookup the data you need.
As I noted in the issue linked above, I think this is a pretty serious design bug.
Is there a way in JXA to get multiple properties from multiple objects with a single call?
For example, I want to get name and enabled property from menu items which can be done for each individual property as follows:
Application("System Events").processes.byName('Finder').menuBars[0].menuBarItems.name()
Application("System Events").processes.byName('Finder').menuBars[0].menuBarItems.enabled()
but is it possible to get them with a single function call? Something like:
Application("System Events").processes.byName('Finder').menuBars[0].menuBarItems.select('name', 'enabled')
I know, that I can iterate through the menuBarItems and collect properties from .properties() method, but this approach is too slow, that's why I'm looking for other options.
UPDATE
I'm looking for better performance, not for nicer syntax, i.e. I want properties to be retrieved in a single call to System Events.
I'd probably do it like this:
sys = Application('com.apple.systemevents');
FinderProc = sys.processes['Finder'];
FinderMenuBarItems = FinderProc.menuBars[0].menuBarItems();
Array.from(FinderMenuBarItems,x=>[x.name(),x.enabled()]);
By first converting the object to an array, this allows one to map each element and retrieve the desired properties for all in one go. The code is split over several lines for ease of reading.
EDIT: added on 2019-07-27
Following on from your comment regarding Objective-C implementation, I had a bit of time today to write a JSObjc script. It does the same thing as the vanilla JXA version above, and, yes, it clearly makes multiple function calls, which is necessary. But it's performing these functions at a lower level than System Events (which isn't involved at all here), so hopefully you'll find it more performant.
ObjC.import('ApplicationServices');
ObjC.import('CoreFoundation');
ObjC.import('Foundation');
ObjC.import('AppKit');
var err = {
'-25211':'APIDisabled',
'-25206':'ActionUnsupported',
'-25205':'AttributeUnsupported',
'-25204':'CannotComplete',
'-25200':'Failure',
'-25201':'IllegalArgument',
'-25202':'InvalidUIElement',
'-25203':'InvalidUIElementObserver',
'-25212':'NoValue',
'-25214':'NotEnoughPrecision',
'-25208':'NotImplemented',
'-25209':'NotificationAlreadyRegistered',
'-25210':'NotificationNotRegistered',
'-25207':'NotificationUnsupported',
'-25213':'ParameterizedAttributeUnsupported',
'0':'Success'
};
var unwrap = ObjC.deepUnwrap.bind(ObjC);
var bind = ObjC.bindFunction.bind(ObjC);
bind('CFMakeCollectable', [ 'id', [ 'void *' ] ]);
Ref.prototype.nsObject = function() {
return unwrap($.CFMakeCollectable(this[0]));
}
function getAttrValue(AXUIElement, AXAttrName) {
var e;
var _AXAttrValue = Ref();
e = $.AXUIElementCopyAttributeValue(AXUIElement,
AXAttrName,
_AXAttrValue);
if (err[e]!='Success') return err[e];
return _AXAttrValue.nsObject();
}
function getAttrValues(AXUIElement, AXAttrNames){
var e;
var _AXAttrValues = Ref();
e = $.AXUIElementCopyMultipleAttributeValues(AXUIElement,
AXAttrNames,
0,
_AXAttrValues);
if (err[e]!='Success') return err[e];
return _AXAttrValues.nsObject();
}
function getAttrNames(AXUIElement) {
var e;
var _AXAttrNames = Ref();
e = $.AXUIElementCopyAttributeNames(AXUIElement, _AXAttrNames);
if (err[e]!='Success') return err[e];
return _AXAttrNames.nsObject();
}
(() => {
const pid_1 = $.NSWorkspace.sharedWorkspace
.frontmostApplication
.processIdentifier;
const appElement = $.AXUIElementCreateApplication(pid_1);
const menuBar = getAttrValue(appElement,"AXMenuBar");
const menuBarItems = getAttrValue(menuBar, "AXChildren");
return menuBarItems.map(x => {
return getAttrValues(x, ["AXTitle", "AXEnabled"]);
});
})();
In the code following this description, I am trying to find and remove all these bad ListConfig objects that didn't have a group object set. It is correctly finding them, however it does not remove them. Is there something I am missing in the following code?
var Groups = [];
function queryForGroups(callback) {
var Group = Parse.Object.extend("Group");
var query = new Parse.Query(Group);
query.limit(1000);
query.find().then(function(result) {
Groups = result;
callback();
});
};
function removeConfigs(){
var Config = Parse.Object.extend("ListConfig");
var query = new Parse.Query(Config);
query.limit(10000);
query.notContainedIn("group", Groups);
query.find().then(function(configs){
return Parse.Object.destroyAll(configs, {useMasterKey:true});
});
}
function removeBadConfigs() {
queryForGroups(function() {
removeConfigs();
});
};
removeBadConfigs();
The code could be a little cleaner with respect to mixing promises, callbacks and an unnecessary global. Beyond that, it looks like it should work as long as your data model supports it. Specifically, your ListConfig object must have a "group" property, and it must have a Parse.Object value set for that property. The most common error I've seen is something like this:
var myGroup = // a parse object of type Group
myListConfig.set("group", myGroup.id); // WRONG
myListConfig.set("group", myGroup); // RIGHT
Assuming you've got that right, then it's mysterious why you're not seeing some deletes, but here's the code cleaned up with promises...
function queryForGroups() {
let query = new Parse.Query("Group")
query.limit(1000);
return query.find();
};
function removeConfigsWithGroups(groups){
let query = new Parse.Query("Config");
query.notContainedIn("group", groups);
return query.find().then(function(configs){
return Parse.Object.destroyAll(configs, {useMasterKey:true});
});
}
function removeBadConfigs() {
return queryForGroups(function(groups) {
return removeConfigsWithGroups(groups);
});
};
removeBadConfigs();
I figured it out. I removed "useMasterKey: true" because 1) it isn't needed for objects not with elevated privileges and 2) I was not running it in Cloud Code.
There is a function that first gets all zones in an environment and then when he found these zones for each zone it will do an api call for the borderpoints.
All fetches get executed but the problem is that in the then for the first fetch if I try to write out the length of the zones or try to do a .foreach I get 0.
I know this is because it runs async and it is not yet loaded on the moment I do the console.log but I tought it should be. That's why we use the .then isn't it? to wait until the data has been loaded.
To be clear: I'm looking for a way to make zones.length give back the real length of the array of objects and be evaluated immediately instead of 0. I can't find out how:
Here is the code.
getZones(){
var that = this;
var zones = new Array();
fetch('api/environment/zone/1').then(function(response){
response.json().then(function(data){
data.forEach(function(element){
zones[element.zoneID] = element;
zones[element.zoneID].points = [];
fetch('api/zone/point/'+element.zoneID).then(function(response){
response.json().then(function(data){
data.forEach(function(element){
zones[element.zoneID].points.push(element);
});
}); //closing of data inner fetch.
});
});
});
}).then(function(response){
console.log(zones); //this gives all zones
console.log(zones.length); //this one gives 0
//the for each is never executed because it's still 0.
zones.forEach(function(element){
console.log(element);
});
});
}
Already a big thanks for the fast Reaction and help.
In the end I fixed it in a more beautiful way:
getZones2(){
var that = this;
var zones = [];
fetch('api/environment/zone/1')
.then(res => res.json())
.then((json) => {
Promise.all(
json.map(
element => fetch('api/zone/point/' + element.zoneID)
.then(res => res.json())
)
).then(datas => {
json.forEach((element, i) => {
zones[element.zoneID] = element
zones[element.zoneID].points = datas[i]
})
console.log(zones);
zones.forEach(function(response){
that.makeZone(response.name,response.zoneID,response.points);
})
})
});
}
The calls to fetch returns an Promise and that is async. So your second .then executes before even the code inside the first then completes because, your first then contains another fetch function being called which is async. You can have a logic like below to wait until you get all points data and the proceed with your logic.
getZones(){
var that = this;
// var zones = new Array();
// this function gets called finally.
// Do what you want to do with zones and points here.
var gotAllZones = function(zones) {
console.log(zones); //this gives all zones
console.log(Object.keys(zones).length); //this one gives 0
Object.keys(zones).forEach(function(index){
console.log(zones[index]);
});
}
fetch('api/environment/zone/1').then(function(response){
response.json().then(function(data){
//decleare zones to be a object. Based on your code `zones` is not an array
var zones = {};
var pointsDone = 0; // declare how many points api has been completed. Initially its `0`
data.forEach(function(element){
zones[element.zoneID] = element;
zones[element.zoneID].points = [];
fetch('api/zone/point/'+element.zoneID).then(function(response){
response.json().then(function(innerData){
innerData.forEach(function(element){
zones[element.zoneID].points.push(element);
});
pointsDone++; //each time we are done with one. we increment the value.
// we check if we are done collecting all points data
// if so we can call the final function.
if(pointsDone === data.length) {
gotAllZones(zones);
}
}); //closing of data inner fetch.
});
});
});
})
}
I am using dexie.js to interface with IndexedDB. I am wondering if it is possible to orderby or sortby using more than one index at once (eg. db.people.orderBy( index1, desc : index2, asc )...
If it is possible, what is the correct syntax?
Either use compound indexes, or use Collection.and().
If you can live with only targeting Chrome, Firefox or Opera, you can use compound indexes. If it must work on Safari, IndexedDBShim, Edge or IE, you cannot use compound indexes today. There's a shim that enables it for IE/Edge though, but it is still in beta, so I would recommend to instead use Collection.and() for those cases.
Let' say you have a form where users can fill in various attributes of friends:
<form>
<input name="name"/>
<input name="age"/>
<input name="shoeSize" />
</form>
Using Collection.and()
First, pick the most probably index to start your search on. In this case, "name" would be a perfect index that wouldn't match so many items, while age or shoeSize would probably match more friends.
Schema:
db.version(X).stores({
friends: "id, name, age, shoeSize"
});
Query:
function prepareQuery () {
// Pick a good index. The picked index will filter out with IndexedDB's built-in keyrange
var query;
if (form.name.value) {
query = db.friends.where('name').equals(form.name.value);
} else if (form.age.value) {
query = db.friends.where('age').equals(parseInt(form.age.value));
} else if (form.shoeSize.value) {
query = db.friends.where('shoeSize').equals(parseInt(form.shoeSize.value));
} else {
query = db.friends.toCollection();
}
// Then manually filter the result. May filter a field that the DB has already filtered out,
// but the time that takes is negligible.
return query.and (function (friend) {
return (
(!form.name.value || friend.name === form.name.value) &&
(!form.age.value || friend.age == form.age.value) &&
(!form.shoeSize.value || friend.shoeSize == form.shoeSize.value));
});
}
// Run the query:
form.onsubmit = function () {
prepareQuery() // Returns a Collection
.limit(25) // Optionally add a limit onto the Collection
.toArray(function (result) { // Execute query
alert (JSON.stringify(result, null, 4));
})
.catch (function (e) {
alert ("Oops: " + e);
});
}
Using compound indexes
As written above, compound indexes code will only work on mozilla- and chromium based browsers.
db.version(x).stores({
friends: "id, name, age, shoeSize," +
"[name+age+shoeSize]," +
"[name+shoeSize]," +
"[name+age]," +
"[age+shoeSize]"
});
The prepareQuery() function when using compound indexes:
function prepareQuery() {
var indexes = []; // Array of Array[index, key]
if (form.name.value)
indexes.push(["name", form.name.value]);
if (form.age.value)
indexes.push(["age", parseInt(form.age.value)]);
if (form.shoeSize.value)
indexes.push(["shoeSize", parseInt(form.shoeSize.value)]);
var index = indexes.map(x => x[0]).join('+'),
keys = indexes.map(x => x[1]);
if (indexes.length === 0) {
// No field filled in. Return unfiltered Collection
return db.friends.toCollection();
} else if (indexes.length === 1) {
// Single field filled in. Use simple index:
return db.friends.where(index).equals(keys[0]);
} else {
// Multiple fields filled in. Use compound index:
return db.friends.where("[" + index + "]").equals(keys);
}
}
// Run the query:
form.onsubmit = function () {
prepareQuery() // Returns a Collection
.limit(25) // Optionally add a limit onto the Collection
.toArray(function (result) { // Execute query
alert (JSON.stringify(result, null, 4));
})
.catch (function (e) {
alert ("Oops: " + e);
});
}
Using arrow functions here to make it more readable. Also, you're targeting chromium or firefox and they support it already.