ObjectMapper
Simple JSON Object mapping written in Swift
I use Alamofire, ObjectMapper and Realm and save my fetched and mapped objets in realm.
Is it possible to delete orphaned objects automatically?
e.g. I fetch for a list of contacts. Now one contacts has been removed from the response and should be deleteted from Realm automatically. Is this something objectmapper can do?
Source: (StackOverflow)
I'm using Alamofire, Objectmapper, Realm and everything is working beside one thing: I can't map nested objects.
class Voting: Object, Mappable {
dynamic var votingID: String = ""
dynamic var question: String = ""
var votingOptions = List<VotingOption>()
required convenience init?(_ map: Map) {
self.init()
}
func mapping(map: Map) {
votingID <- map["id"]
question <- map["question"]
votingOptions <- map["votingOptions"]
}
override class func primaryKey() -> String {
return "votingID"
}
}
class VotingOption: Object, Mappable{
dynamic var optionID: String = ""
dynamic var text: String = ""
required convenience init?(_ map: Map) {
self.init()
}
func mapping(map: Map) {
optionID <- map["id"]
text <- map["optionText"]
}
override class func primaryKey() -> String {
return "optionID"
}
}
The JSON that I'm trying to map is:
{
"Voting": [
{
"question": "Which option do yo prefer?",
"id": "7f073efd-6f3d-43f2-9fe4-5cad683b77a2",
"votingOptions": [
{
"optionText": "Option 3",
"id": "3bc0a618-8791-4862-a7fd-5f2df464697d"
},
{
"optionText": "Option 1",
"id": "84c6a830-814b-40c8-a252-c074be5d689a"
},
{
"optionText": "Option 2",
"id": "8872ef6f-fc70-445a-802e-d39944006467"
}
]
}
]
}
The mapping funktion in VotingOption never gets called.
Source: (StackOverflow)
I have a class with lots of attributes which are required for server side logic, but a few of those are required for UI. Now when I am creating a json from the class, all the attributes are written to json. I want to ignore some values only when it is converted to json. I Tried with @JsonIgnore
. But it is not working.
My Class Is
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
@JsonIgnoreProperties(ignoreUnknown = true)
public class Student {
@JsonProperty("id")
protected Integer id;
@JsonProperty("name")
protected String name;
/**
* This field I want to ignore in json.
* Thus used @JsonIgnore in its getter
*/
@JsonProperty("securityCode")
protected String securityCode;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@JsonIgnore
public String getSecurityCode() {
return securityCode;
}
public void setSecurityCode(String securityCode) {
this.securityCode = securityCode;
}
}
And I am writing this using
public static StringBuilder convertToJson(Object value){
StringBuilder stringValue = new StringBuilder();
ObjectMapper mapper = new ObjectMapper();
try {
stringValue.append(mapper.writeValueAsString(value));
} catch (JsonProcessingException e) {
logger.error("Error while converting to json>>",e);
}
return stringValue;
}
My Expected json should contain only :
id:1
name:abc
but what I am getting is
id:1
name:abc
securityCode:_gshb_90880..some_value.
What is wrong here, please help
Source: (StackOverflow)