android - Using Retrofit and GreenDao with nested json objects -

i want combine retrofit , greendao have problem nested json-objects. nested fields remain empty.

this json datastructure

[     {         "id": 1,          "street": "streetname",          "zipcode": 12345,          "city": "mycity",          "phone_number": "+123456789",          "position": "12.0000, 9.0000",          "company": {             "title": "companyname",              "group": {                 "title": "groupname"             }         }     } ] 

my daogenerator looks this

    entity customitem = schema.addentity("customitems");     customitem.addidproperty();     customitem.addstringproperty("street");     customitem.addintproperty("zipcode");     customitem.addstringproperty("city");     customitem.addstringproperty("phone_number");     customitem.addstringproperty("position");      entity company = schema.addentity("company");     company.addidproperty();     company.addstringproperty("title");      entity group = schema.addentity("group");     group.addidproperty();     group.addstringproperty("title");      property companypropid = customitem.addlongproperty("companyid").notnull().getproperty();     customitem.addtoone(company, companypropid);      property grouppropid = company.addlongproperty("groupid").notnull().getproperty();     company.addtoone(group, grouppropid); 

my problem customitem.getcompany() returns null values "id" "position" fine. i'm not sure problem customitem class contains member

private company company; 

and setter company , can't see typo.

public void setcompany(company company) {     if (company == null) {         throw new daoexception("to-one property 'companyid' has not-null constraint; cannot set to-one null");     }     synchronized (this) {         this.company = company;         companyid = company.getid();         company__resolvedkey = companyid;     } } 

i got running had multiple problems.

1) when wanted persist customitem, company, , group had problem getters getcompany() , getgroup() returned null because don't return member directly fetch db. therefore added getter generated customitem entity class returns company member. able insert company db. getter looks this:

// keep methods - put custom methods here public company getcompanylocal() {     return company; } // keep methods end 

the same works company , group, too. there issue...

2) second problem entity 'group' 'group' reserved sql keyword. see 1 solution , bad workaround problem:

• the 1 change json data 'group' i.e. 'business_group' , according change daos. done.

• the bad workaround if in same situation me can't change json following. don't persist group @ can access via company. somehow appears there. therefore added getter company class getter of customitem above. works should avoid this. can't query db group or load group db.