SAPUI5 Expression Binding Filter

[#1]

Hello experts,

I am just wondering what am I doing wrong.

Here is the link to my example

What am I trying: I have a JSON model with the following structure.

var oData = {
   "Orders":[
      {isRead : true},
      {isRead : false}
   ]
};

And a view where I want to output in a text field the number of all objects in "/Orders" that have "isRead == false". I thought this can be solved using the following expression binding....

<Text
                  text="{= ${
                    path: '/Orders',
                    filters:[
                      {
                        path: 'isRead',
                        operator: 'EQ',
                        value1: false
                      }
                    ]
                  }.length }"/>

But there is no filtering. It always outputs 2. I admit at this point, I don't understand it.

The whole thing is a very constructed example, but it represents my problem in the simplest way.

Thanks and greetings,
Thomas

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[German Version, cause I thought the language selection while asking the question is for translation, but this seems not the case.]

Hallo Experten,

ich frage mich gerade, was mache ich falsch.

Hier der Link zu meinem Beispiel : Beispiel

Was versuche ich: Ich habe ein JSON-Model mit folgendem Aufbau

var oData = {
   "Orders":[
      {isRead : true},
      {isRead : false}
   ]
};

Und eine View, in der ich in einem Textfeld die Anzahl aller Objekte in "/Orders" ausgeben möchte, welche "isRead == false" haben.

Ich dachte, dies lässt sich über folgendes Expression Binding lösen...

<Text
                  text="{= ${
                    path: '/Orders',
                    filters:[
                      {
                        path: 'isRead',
                        operator: 'EQ',
                        value1: false
                      }
                    ]
                  }.length }"/>

Aber es wird nicht gefiltert. Es wird immer 2 ausgegeben. Ich gebe an der Stelle zu, ich verstehe es nicht.

Das ganze ist ein sehr konstruiertes Beispiel, aber es stellt mein Problem am einfachsten dar.

Danke und Grüße,
Thomas

[Dhanasupriya]

Hello Thomas

I think there is some issue in using filters in view.. so i tried this way..

onInit: function () { var oData = { "Orders": [{ isRead: true }, { isRead: false }] }; this.getView().setModel( new JSONModel(oData)); var aFilters = []; aFilters.push(new sap.ui.model.Filter("isRead", sap.ui.model.FilterOperator.EQ, false)); console.log(aFilters.length); }

[thbuett]

Ok,

but aFilters.length returns, how many entries in the filter-array, not how many "Orders" meet this condition of the filter.

And your are right, I hade forget to say, that I am searching for a controller free solution. Cause the real code I have is running in an Dialog, for which I don't want to implement an seperate controller. But if it turns out that filtering in views is limited,as you say, I'll have to switch to a controller solution.

Thanks for your idea