I'm trying to get the BreezeJS library working with an SAP OData service. This is working for reading entities, but I'm not able to resolve the linked objects.
My EntityType is an OrgObject.
<EntityType Name="OrgObject" sap:content-version="1">
<!-- ... -->
<NavigationProperty Name="Children" Relationship="ZGW_ORGSTRUCTURE.OrgObject_To_Children" FromRole="FromRole_OrgObject_To_Children" ToRole="ToRole_OrgObject_To_Children"/>
</EntityType>
I have a link to resolve all linked OrgObjects (link is named Children).
<Association Name="OrgObject_To_Children" sap:content-version="1">
<End Type="ZGW_ORGSTRUCTURE.OrgObject" Multiplicity="1" Role="FromRole_OrgObject_To_Children"/>
<End Type="ZGW_ORGSTRUCTURE.OrgObject" Multiplicity="*" Role="ToRole_OrgObject_To_Children"/>
</Association>
So, this breeze query is working:
var query = new breeze.EntityQuery().from("OrgObjects");
manager.executeQuery(query).then(function(data) {
data.results.forEach(function(item) {
console.log(item);
});
}).fail(/*...*/);
How do I call the "children" from this object?
Attempt 1:
var query = new breeze.EntityQuery().from("OrgObjects");
manager.executeQuery(query).then(function(data) {
data.results.forEach(function(item) {
console.log(item);
// ...
var Children = item.Children();
// ...
});
}).fail(/*...*/);
this results in an error:
message: "Object [object Object] has no method 'children'"
Attempt 2:
var query = new breeze.EntityQuery().from("OrgObjects");
manager.executeQuery(query).then(function(data) {
data.results.forEach(function(item) {
console.log(item);
// ...
item.entityAspect.loadNavigationProperty("Children").then(function(data) {
console.log(data.results);
data.results.forEach(function(item) {
console.log(item);
});
}).fail(function(e) {
console.log(e);
});
// ...
});
}).fail(/*...*/);
This results in an error:
The 'propertyOrExpr' parameter must be a 'string'
Attempt 3:
var query = new breeze.EntityQuery().from("OrgObjects").expand("Children");
manager.executeQuery(query).then(function(data) {
data.results.forEach(function(item) {
console.log(item);
// ...
console.log(item.Children);
console.log( item.Children.length );
// ...
});
}).fail(/*...*/);
Result: item.Children is an object. But item.Children.length = 0.
When I check the http response, the children are fetched from the server, but not available in the item.Children object.
Console output:
Finance Department
[parentEntity: Object, navigationProperty: ctor, arrayChanged: ctor, _addsInProcess: Array[0], push: function…]
_addsInProcess: Array[0]
_getEventParent: function () {
_getPendingPubs: function () {
arrayChanged: ctor
length: 0
load: function (callback, errorCallback) {
navigationProperty: ctor
parentEntity: Object
pop: function () {
push: function () {
shift: function () {
splice: function () {
unshift: function () {
__proto__: Array[0]
0
Who can help me out? Is there something missing in my OData service?
