I'm working on a web app that uses Breeze and Knockout. I have the following function:
function getArticle(id, articleObservable) {
var query = EntityQuery.from('KbArticles')
.where("articleId", "==", id)
.expand("KbArticleType, KbSubject, KbArticleTags");
return manager.executeQuery(query)
.then(querySucceeded)
.fail(queryFailed);
function querySucceeded(data) {
if (articleObservable) {
articleObservable(data.results[0]);
}
log('Retrieved [Article] from remote data source', data.results.length, true);
}
}
A 1 to many relationship exists between the KbArticles entity and the KbArticleTags entity. The goal of this function is to fetch a specific article and the list of tags associated with the article. The function executes successfully (and I DO get data for the other 2 expanded entities - they are 1 to 1), however, I get an empty array for the KbArticleTags in data.results. Interestingly, the tags are populated in data.httpResponse:
So, it appears that the data is coming over the wire, but it's not making it to the results in the querySucceeded function. I tried to step through the breeze code to determine how the httpResponse is mapped to the result, but got lost fairly quickly (I'm a javascript newb). Does anyone have any troubleshooting tips for figuring out why the expanded entity doesn't show in the results, but is returned in the httpResponse? Or am I trying to do something that isn't supported?
Ok, so for whatever reason (I probably deleted it one day while testing and didn't add it back), the navigation property (in my Entity Framework diagram) was missing on the KbArticleTag entity:
All I had to do was add that back and everything is working as expected.
Related
I know I am reopening an old one (Perform filter on expanded entity with SAP Cloud SDK), but it was a while ago and was referencing the Java version of the API used to consume an S/4 HANA service.
I'm testing the Javascript version of the API against the SuccessFactors OData API, which is indeed able to perform filters on expanded entities, like so:
<API_HOST>/odata/v2/PerPerson?$filter=personalInfoNav/firstName eq 'MARCO'&$expand=personalInfoNav&$select=personalInfoNav/firstName, personalInfoNav/lastName&$top=20
Translated into the SDK, it would be (TypeScript):
const personList: Array<PerPerson> =
await PerPerson.requestBuilder().getAll().top(20)
.select(
PerPerson.DATE_OF_BIRTH,
PerPerson.PERSONAL_INFO_NAV.select(
PerPersonal.PERSON_ID_EXTERNAL,
PerPersonal.FIRST_NAME,
PerPersonal.LAST_NAME,
PerPersonal.GENDER
)
).filter(PerPersonal.FIRST_NAME.equals('MARCO'))
.execute({ destinationName: this.configService.get<string>('ACTIVE_DESTINATION') });
But this code does not compile because of the incompatibility of types for the filter function, which here expects a "PerPerson" type and not "PerPersonal".
I was not able to find anything about this.
Considering that the plain OData query works perfectly, anyone has been able to make this work?
Update:
I didn't initially understand that Successfactors offered this functionality on top of the protocol. There are two possible workarounds I can think of:
use new Filter, e.g.:
PerPerson.requestBuilder().getAll().top(20)
.select(
...
).filter(
new Filter('personalInfoNav/firstName', 'eq', 'MARCO')
)
...
If this doesn't work, you can call build on the request builder instead of execute, which gives you the ODataRequest object from which you can get the URL, which you'd then have to manipulate manually. Then you should be able to use the executeHttpRequest function to execute this custom request object against a destination.
Let me know if one of these work for you!
Original answer:
filtering on expanded entities on OData v2 is only possible if the relationship between the two entities is 1:1. In the case the code would look like this:
PerPerson.requestBuilder().getAll().top(20)
.select(
PerPerson.DATE_OF_BIRTH,
PerPerson.PERSONAL_INFO_NAV.select(
PerPersonal.PERSON_ID_EXTERNAL,
PerPersonal.FIRST_NAME,
PerPersonal.LAST_NAME,
PerPersonal.GENDER
)
).filter(
PerPerson.PERSONAL_INFO_NAV.filter(
PerPersonal.FIRST_NAME.equals('MARCO')
))
...
If, however, the relationship is 1:n, filtering is not possible.
Hope that helps!
I have a problem with Select2 where it will only allow one section in the <input>. I cannot use <select> with the multiple as it is a limitation of select2 apparently when using ajax for data results.
Sample code (json data is at the bottom) http://jsfiddle.net/YeEmP/
id: function(data){
return {
product_id: data.product_id
};
}
I suspect the problem is with the above code but can't be sure. When searching for a model eg D7000 it appears correctly like the example shown here
However if I search for another model number i.e D7100 it will say no results found but the ajax request returns the model just as if it was D7000.
If I search for the model it didn't recognise first it works, vice versa.
I'm not sure what I am doing wrong but my complete code can be found in the jsfiddle link, it might not work as my datasource is ajax in the example but I have passed the json array as a commented out section.
I am using couchbase API in java
View view = client.getView("dev_1", "view1");
Query query = new Query();
query.setIncludeDocs(true);
query.setKey(this.Key);
ViewResponse res=client.query(view, query);
for(ViewRow row: res)
{
// Print out some infos about the document
a=a+" "+row.getKey()+" : "+row.getValue()+"<br/>";
}
return a;
and the java script view in couchbase
function (doc,meta) {
emit(meta.id,doc);
}
So, when I remove the statement query.setkey(this.Key) it works returns me all the tables, what am I missing here .. How can I change the function to refect only the table name mentioned in the key
Change the map function like this:
function (doc,meta) {
emit(doc.table,null);
}
it is good practice not to emit the entire document like:
emit(doc.table, doc)
NB: This is surprisingly important:
i have tried using setKey("key") so many times from Java projects and setting the key using CouchBase Console 3.0.1's Filter Result dialog, but nothing get returned.
One day, i used setInclusiveEnd and it worked. i checked the setInclusiveEnd checkbox in CouchBase Console 3.0.1's Filter Result dialog and i got json output.
query.setKey("whatEverKey");
query.setInclusiveEnd(true);
i hope this will be helpful to others having the same issue. if anyone finds another way out, please feel free to add a comment about it.
i don't know why their documentation does not specify this.
EXTRA
If your json is derived from an entity class in a Java Project, make sure to include an if statement to test the json field for the entity class name to enclose you emit statement. This will avoid the key being emitted as null:
if(doc._class == "path.to.Entity") {
emit(doc.table, null);
}
I've used the webOS Ares tool to create a relatively simple App. It displays an image and underneath the image are two labels. One is static, and the other label should be updated with new information by tapping the image.
When I tap the image, I wish to obtain a JSON object via a URL (http://jonathanstark.com/card/api/latest). The typcial JSON that is returned looks like this:
{"balance":{"amount":"0","amount_formatted":"$0.00","balance_id":"28087","created_at":"2011-08-09T12:17:02-0700","message":"My balance is $0.00 as of Aug 9th at 3:17pm EDT (America\/New_York)"}}
I want to parse the JSON's "amount_formatted" field and assign the result to the dynamic label (called cardBalance in main-chrome.js). I know that the JSON should return a single object, per the API.
If that goes well, I will create an additional label and convert/assign the "created_at" field to an additional label, but I want to walk before I run.
I'm having some trouble using AJAX to get the JSON, parse the JSON, and assign a string to one of the labels.
After I get this working, I plan to see if I can load this result on the application's load instead of first requiring the user to tap.
So far, this is my code in the main-assistant.js file. jCard is the image.
Code:
function MainAssistant(argFromPusher) {}
MainAssistant.prototype = {
setup: function() {
Ares.setupSceneAssistant(this);
},
cleanup: function() {
Ares.cleanupSceneAssistant(this);
},
giveCoffeeTap: function(inSender, event) {
window.location = "http://jonathanstark.com/card/#give-a-coffee";
},
jcardImageTap: function(inSender, event) {
//get "amount_formatted" in JSON from http://jonathanstark.com/card/api/latest
//and assign it to the "updatedBalance" label.
// I need to use Ajax.Request here.
Mojo.Log.info("Requesting latest card balance from Jonathan's Card");
var balanceRequest = new Ajax.Request("http://jonathanstark.com/card/api/latest", {
method: 'get',
evalJSON: 'false',
onSuccess: this.balanceRequestSuccess.bind(this),
onFailure: this.balanceRequestFailure.bind(this)
});
//After I can get the balance working, also get "created_at", parse it, and reformat it in the local time prefs.
},
//Test
balanceRequestSuccess: function(balanceResponse) {
//Chrome says that the page is returning X-JSON.
balanceJSON = balanceResponse.headerJSON;
var balanceAmtFromWeb = balanceJSON.getElementsByTagName("amount_formatted");
Mojo.Log.info(balanceAmtFromWeb[0]);
//The label I wish to update is named "updatedBalance" in main-chrome.js
updatedBalance.label = balanceAmtFromWeb[0];
},
balanceRequestFailure: function(balanceResponse) {
Mojo.Log.info("Failed to get the card balance: " + balanceResponse.getAllHeaders());
Mojo.Log.info(balanceResponse.responseText);
Mojo.Controller.errorDialog("Failed to load the latest card balance.");
},
//End test
btnGiveCoffeeTap: function(inSender, event) {
window.location = "http://jonathanstark.com/card/#give-a-coffee";
}
};
Here is a screenshot of the application running in the Chrome browser:
In the browser, I get some additional errors that weren't present in the Ares log viewer:
XMLHttpRequest cannot load http://jonathanstark.com/card/api/latest. Origin https://ares.palm.com is not allowed by Access-Control-Allow-Origin.
and
Refused to get unsafe header "X-JSON"
Any assistance is appreciated.
Ajax is the right tool for the job. Since webOS comes packaged with the Prototype library, try using it's Ajax.Request function to do the job. To see some examples of it, you can check out the source code to a webOS app I wrote, Plogger, that accesses Blogger on webOS using Ajax calls. In particular, the source for my post-list-assistant is probably the cleanest to look at to get the idea.
Ajax is pretty much the way you want to get data, even if it sometimes feels like overkill, since it's one of the few ways you can get asynchronous behavior in JavaScript. Otherwise you'd end up with code that hangs the interface while waiting on a response from a server (JavaScript is single threaded).
I hope I am describing my issue enough.. here goes:
I have a YUI data table, get a server side set of records via JSON, and then populates the data.
Users can click on the headers to sort the data in three of the 6 columns, (which are using a custom sort function for each column). The sorting is done client-side.
When a user sorts the data, I need to be able to get a complete list of the values from one of the columns being shown. I need all the data available, not just what's rendered to the page. The data hidden via pagination must be included.
Any ideas? I've tried the handleDataReturnPayload and doBeforeLoadData methods of the DataTable but both give the original, unsorted data.
I'm really stuck here and I've got a client depending on a feature that depends on me getting this sorted list.
Thanks in advance.
Satyam, over at the YUI Forums answered my question perfectly.
The data is actually stored in the
RecordSet. At any time you can go and
look at it, and it will be sorted as
shown on the screen, but it will have
all the data, whether shown or not.
Method getRecordset() will give you a
reference to it and then you can loop
through its records.
You can listen to the columnSortEvent
to be notified a sort has occurred.
I just subscribed to the columnSortEvent event and looped through the array returned by datatable.getRecordSet().getRecords().
I'd recommend posting this to the YUI forums -- http://yuilibrary.com/forum/ -- that's a great place to get support on DataTable issues.
I stumbled upon this question looking for information on how to retrieve information from a dataset that was NOT displayed in the datatable. IF you place the hidden data in the datasource before any field you wish to be displayed, it will be rendered blank, but if you place it after your last field that will be rendered (as defined by the columns object), then they will not render but still be accessible through the record).
var columns = [
{key:"Whatchamacallits", children:[
{key:"name" },
{key:"price" }
]}
];
var ds = new YAHOO.util.DataSource('index.php...');
oDataSource.responseType = YAHOO.util.DataSource.TYPE_JSARRAY;
oDataSource.responseSchema = {
fields:["name","price","id"]
};
var dt = new YAHOO.widget.DataTable("dt-id", columns, ds, {});
dt.subscribe("rowClickEvent", dt.onEventSelectRow);
dt.subscribe("rowSelectEvent", function(p){ alert(p.getData('id'); });