DbException: Order: Unsupported type for property price_amount (Float)

Issue Basics

• ObjectBox version (are using the latest version?): 1.1.0
• Reproducibility: always

Reproducing the bug

Description

I try to sort a list of entities of type SoluteNOffer by a Float-property with the name price_amount, which fails with a DbException: Order: Unsupported type for property price_amount.

I did not find any information anywhere about which field-types are supported for ordering result-collections or that there are any restrictions in place.

The stacktrace points to QueryBuilder.nativeBuild(Native Method), which doesn’t help either.

Why isn’t ordering of Float-properties supported and is there a list of supported property-types?

Thank you for looking into this!

Arne Jans

Code

The generated property of the Property-class SoluteNOffer_ looks like this: public final static Property price_amount = new Property(9, 10, Float.class, "price_amount"); The query-code with the order-statement looks like this:

    public List<SoluteNOffer> getSoluteNOffersById(long[] offerIds) {
        Box<SoluteNOffer> offerBox = getBoxStore().boxFor(SoluteNOffer.class);
        return offerBox.query()
                .in(SoluteNOffer_.id, offerIds)
                .order(SoluteNOffer_.price_amount)
                .build().find();
    }

Logs & stackstraces

java.lang.RuntimeException: Unable to start activity ComponentInfo{de.pricepretzel.android/de.billiger.android.sparberater.activities.OfferListActivity}: io.objectbox.exception.DbException: Order: Unsupported type for property price_amount
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
    at android.app.ActivityThread.-wrap11(Unknown Source:0)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
    at android.os.Handler.dispatchMessage(Handler.java:105)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6541)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
 Caused by: io.objectbox.exception.DbException: Order: Unsupported type for property price_amount
    at io.objectbox.query.QueryBuilder.nativeBuild(Native Method)
    at io.objectbox.query.QueryBuilder.build(QueryBuilder.java:164)
    at de.billiger.android.sparberater.service.api.soluten.persistence.SoluteNBoxStore.getSoluteNOffersById(SoluteNBoxStore.java:67)

Entities

@Entity
public class SoluteNOffer {
    public Float price_amount;
}

Misc

Would introducing an int-property and using it for ordering work around this issue, or is there a better approach?

[ajans]

Yes, it is working now as intended. Thanks!

[greenrobot]

@marek-embiq This is an old closed issue. Please open a new one with info & code required to reproduce. Thanks!