Retrofit + gson + stackoverflow #121

rhespanhol · 2015-03-04T15:55:25Z

Im using retrofit + gson to pull and parse some json from a webservice to this object. Now i want to use that same object as Model but i keep getting stackoverflow.
Is there anyway to fix this?


 java.lang.StackOverflowError
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
            at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:355)
            at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:117)
            at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:72)
            at com.google.gson.Gson.getAdapter(Gson.java:356)
            at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.(ReflectiveTypeAdapterFactory.java:82)
            at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:81)
            at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:118)
            at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:72)

Here is my model:


@Table
public class Category extends BaseModel implements  Parcelable {

    public Category() {
        super();
    }

    @Column(columnType = Column.PRIMARY_KEY)
    @SerializedName("id")
    public int mId;

    @Column
    @SerializedName("pantone")
    public String mColor;

    @SerializedName("langs")
    public ArrayList mCategoryLanguageArrayList;

...

The text was updated successfully, but these errors were encountered:

agrosner · 2015-03-04T15:56:18Z

This appears to be a GSON issue, not a DBFlow issue.

rhespanhol · 2015-03-04T16:00:52Z

Thanks for your quick answer.

But you know any workaround to fix this?

agrosner · 2015-03-04T19:49:31Z

looks good to me. I would debug GSON, and there is not much more I can do to help. Not that I don't want to, just I am not familiar with the library and not sure this error is a DBFlow issue.

intrications · 2015-03-04T21:15:34Z

@rhespanhol

I solved this by using Gson's @expose annotation.

Pass a custom Gson to Retrofit:

 Gson gson = new GsonBuilder()
                .excludeFieldsWithoutExposeAnnotation()
                .create();
 RestAdapter restAdapter = new RestAdapter.Builder()
                .setConverter(new GsonConverter(gson))
                .build();

Then add the @expose annotation to all your fields (that you want to deserialize) in your Model class.

Not sure why it works but it did.

rhespanhol · 2015-03-05T12:11:28Z

Thanks @intrications, it worked!!

ghost · 2015-03-06T18:10:57Z

@intrications Can you give an example please? It doesn't work for me :(

Gson gson = new GsonBuilder()
                .excludeFieldsWithoutExposeAnnotation()
                .create();
return new RestAdapter.Builder()
                .setLogLevel(RestAdapter.LogLevel.FULL)
                .setEndpoint(ApiEndpoint.QUICK_CLOUD_ROOT_API)
                .setRequestInterceptor(headers)
                .setClient(new ApacheClient(getNewHttpClient()))
                .setConverter(new GsonConverter(gson))
                .build();
In Model:

@Table(value = "user")
@ContainerAdapter
public class User extends BaseModel {

    @Expose
    @Column(columnType = Column.PRIMARY_KEY, name = "object_id")
    String objectId;

    @Expose
    @Column
    String name;

    @Expose
    @Column
    String email;

    @Expose
    @Column(name = "email_verified")
    boolean emailVerified;

    @Expose
    @Column(name = "created_at")
    String createdAt;

    @Expose
    @Column(name = "updated_at")
    String updatedAt;
}

Is something wrong? :(

intrications · 2015-03-06T18:56:04Z

What is ContainerAdapter? I didn't use that.
On 6 Mar 2015 18:11, "nambv" notifications@github.com wrote:

@intrications https://github.com/intrications Can you give an example
please? It doesn't work for me :(

Gson gson = new GsonBuilder()
.excludeFieldsWithoutExposeAnnotation()
.create();
return new RestAdapter.Builder()
.setLogLevel(RestAdapter.LogLevel.FULL)
.setEndpoint(ApiEndpoint.QUICK_CLOUD_ROOT_API)
.setRequestInterceptor(headers)
.setClient(new ApacheClient(getNewHttpClient()))
.setConverter(new GsonConverter(gson))
.build();
In Model:

@table(value = "user")
@ContainerAdapter
public class User extends BaseModel {
@Expose
@Column(columnType = Column.PRIMARY_KEY, name = "object_id")
String objectId;

@Expose
@Column
String name;

@Expose
@Column
String email;

@Expose
@Column(name = "email_verified")
boolean emailVerified;

@Expose
@Column(name = "created_at")
String createdAt;

@Expose
@Column(name = "updated_at")
String updatedAt;
}

Is something wrong? :(

—
Reply to this email directly or view it on GitHub
#121 (comment).

ghost · 2015-03-06T19:02:24Z

@intrications It's used to save model to database by calling method

model.save(false)

And thanks for your solution! Finally, It's work for me ^^

Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().create();
User user = gson.fromJson(result.getAsJsonObject(), User.class);
user.save(false);

agrosner · 2015-03-06T20:06:48Z

@nambv @intrications @ContainerAdapter is used to generate an adapter to work with ModelContainers. Rather than always generating it, I made it separated to cut down on generated code.

ghost · 2015-03-07T22:31:31Z

@agrosner Thank you very much for your explaination ^^!

rjam · 2015-03-17T14:26:14Z

Instead of force exposing all fields, you should get the same result just by letting Gson know that it should not try to serialize/deserialize the contents of the BaseModel class your models are extending (namely the ModelAdapter field it holds). Try creating your gson instance like this and you should no longer need to add the @Expose annotation to all fields:

Gson gson = new GsonBuilder()
                .setExclusionStrategies(new ExclusionStrategy() {
                    @Override
                    public boolean shouldSkipField(FieldAttributes f) {
                        return f.getDeclaredClass().equals(ModelAdapter.class);
                    }

                    @Override
                    public boolean shouldSkipClass(Class<?> clazz) {
                        return false;
                    }
                })
                .create();

Rainer-Lang · 2015-03-17T16:45:26Z

@rjam Many MANY THANKS!

intrications · 2015-03-17T22:46:06Z

@rjam Thanks for that. I wasn't sure exactly what it was in BaseModel that was causing the problem.

shashi2459 · 2015-06-05T12:58:32Z

thanks guy`s....it was helpful.

AdamMTGreenberg · 2015-06-28T10:26:08Z

This is also going to be an issue for anyone using Jackson + Retrofit + DBFlow.

The solution is for any class that extends BaseModel

make sure you do something along the lines of:

@JsonIgnore
@Override
public ModelAdapter getModelAdapter(){
    return super.getModelAdapter();
}

anelrh26 · 2016-03-01T20:43:18Z

I'm using retrofit + jackson. And I also want to use the same model for the DB and Jackson. But, I'm getting this error. Can someone help me? I don't know where is the error exactly

03-01 20:38:11.462 27759-27759/com E/art: Throwing OutOfMemoryError "Failed to allocate a 28 byte allocation with 0 free bytes and 0B until OOM" (recursive case)
03-01 20:38:11.467 27759-27759/com E/art: "main" prio=5 tid=1 Runnable
03-01 20:38:11.467 27759-27759/com E/art: | group="main" sCount=0 dsCount=0 obj=0x73c14540 self=0xb4606800
03-01 20:38:11.467 27759-27759/com E/art: | sysTid=27759 nice=0 cgrp=apps sched=0/0 handle=0xb77b9160
03-01 20:38:11.467 27759-27759/com E/art: | state=R schedstat=( 924735144 476697697 652 ) utm=81 stm=10 core=0 HZ=100
03-01 20:38:11.467 27759-27759/com E/art: | stack=0xbf5a9000-0xbf5ab000 stackSize=8MB
03-01 20:38:11.467 27759-27759/com E/art: | held mutexes= "mutator lock"(shared held)

@Table(database = Database.class)
@JsonRootName(value = "login")
@JsonIgnoreProperties({"profileId", "id"})
public class Profile extends BaseModel implements Parcelable {

    @PrimaryKey(autoincrement = true)
    private int profileId;

    @Column
    @JsonProperty("email")
    private String username;

    @Column
    @JsonProperty("password")
    private String password;

    public Profile(){

    }
....
}

anelrh26 · 2016-03-01T20:53:13Z

Forget it!

@AdamMTGreenberg is right!.

I just have to add the following in my model.

@JsonIgnore
@Override
public ModelAdapter getModelAdapter(){
    return super.getModelAdapter();
}

ghost · 2016-04-04T15:03:10Z

@anelrh26 like this, is right too!
@table(database = ExamDatabase.class)
@JsonIgnoreProperties({"modelAdapter"})
public class AnswerInfo extends BaseModel implements Serializable {
}

agrosner closed this as completed Mar 4, 2015

agrosner mentioned this issue Mar 28, 2015

Increase in build times and warning #171

Closed

robertio4 mentioned this issue Nov 14, 2016

Problem with BaseModel when I pass object to JsonObject #1053

Closed

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Retrofit + gson + stackoverflow #121

Retrofit + gson + stackoverflow #121

rhespanhol commented Mar 4, 2015

agrosner commented Mar 4, 2015

rhespanhol commented Mar 4, 2015

agrosner commented Mar 4, 2015

intrications commented Mar 4, 2015

rhespanhol commented Mar 5, 2015

ghost commented Mar 6, 2015

intrications commented Mar 6, 2015

ghost commented Mar 6, 2015

agrosner commented Mar 6, 2015

ghost commented Mar 7, 2015

rjam commented Mar 17, 2015

Rainer-Lang commented Mar 17, 2015

intrications commented Mar 17, 2015

shashi2459 commented Jun 5, 2015

AdamMTGreenberg commented Jun 28, 2015

anelrh26 commented Mar 1, 2016

anelrh26 commented Mar 1, 2016

ghost commented Apr 4, 2016

Retrofit + gson + stackoverflow #121

Retrofit + gson + stackoverflow #121

Comments

rhespanhol commented Mar 4, 2015

agrosner commented Mar 4, 2015

rhespanhol commented Mar 4, 2015

agrosner commented Mar 4, 2015

intrications commented Mar 4, 2015

rhespanhol commented Mar 5, 2015

ghost commented Mar 6, 2015

intrications commented Mar 6, 2015

ghost commented Mar 6, 2015

agrosner commented Mar 6, 2015

ghost commented Mar 7, 2015

rjam commented Mar 17, 2015

Rainer-Lang commented Mar 17, 2015

intrications commented Mar 17, 2015

shashi2459 commented Jun 5, 2015

AdamMTGreenberg commented Jun 28, 2015

anelrh26 commented Mar 1, 2016

anelrh26 commented Mar 1, 2016

ghost commented Apr 4, 2016