GreenDao通过列名设置实体属性

Question

I have an entity with 500 properties, each of those have human redeable names like 'serialNumber', but it's column_name is 'E_A_XNF'.

Now I have a form which gives me a Map with the column name as a key.

How can I, with GreenDao, do something like :

String columnName = 'E_A_XNF';
String serialNumber = myMap.get(columnName);
entity.setByColumnName(columnName, serialNumber);

obviously in the real program I will loop over every entry in the map.

Thanks.

EDIT :

I have this entity :

@Entity(nameInDb = "T_REF_CHAMP", generateConstructors = false,
        indexes = {@Index(value = "id", unique = true)})
public class ChampEntity {

    @Property(nameInDb = "ID_DAO")
    @Id
    private Long idDAO;

    @Property(nameInDb = "ID_CHAM")
    @NotNull
    private String id;

    @Property(nameInDb = "TAILLE_MAX_CHAM")
    private String tailleMaximum;

    @Property(nameInDb = "TYPE_CODE_CHAM")
    private String typeCode;

    @Property(nameInDb = "VAL_DEFAUT_CHAM")
    private String defaultValue;

    //more than 500 other property
    //more than 500 other property
    //more than 500 other property
    //more than 500 other property
    //more than 500 other property
    //more than 500 other property
    //more than 500 other property

    //getter setter

    }

then I have this :

Map<String, String> dataToStore = new Hashmap<>();
dataToStore.put(ID_CHAM, "qzdqzddqzd");
dataToStore.put(TAILLE_MAX_CHAM, "122");
dataToStore.put(TYPE_CODE_CHAM, "lolola");
dataToStore.put(VAL_DEFAUT_CHAM, "ergot");
//more than 500 other values

How do I fill the entity with this map? since the entity only contains the column real names.

Answer 1

What you can do is using the reflection.

//example class
public class TestEntity {
    @Property(nameInDb = "NAME")
    public String name;

    @Property(nameInDb = "SURNAME")
    public String surname;

    @Override
    public String toString() {
        return "TestEntity{" +
               "name='" + name + '\'' +
               ", surname='" + surname + '\'' +
               "}";
    }
}

//example map
Map<String, String> dataStore = new HashMap<>();
dataStore.put("NAME", "mat");
dataStore.put("SURNAME", "pag");

//use reflection to fill object
TestEntity te = new TestEntity();
Field[] fields = te.getClass().getFields();
for (Field field : fields) {
    //search the field for the GreenDao Property annotation
    Property propertyAnnot = field.getAnnotation(Property.class);
    if (propertyAnnot != null) {
        for (Map.Entry<String, String> pair : dataStore.entrySet()) {
            //match the map key and the nameInDb value
            if (pair.getKey().equals(propertyAnnot.nameInDb())) {
                try {
                    field.set(te, pair.getValue());
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

//check the values of the filled object
te.toString();

Obviously this is not performance optimized but you can do it yourself based on your logic.