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SDN4 is not returning nested Entities

Hello Stack overflow,
I have the following Problem:
I have these entity classes:
public class UnknownEntity extends NetworkEntity{
#Id
#GeneratedValue(strategy = UuidStrategy.class)
private String id;
#Override
public void setId(String id) {
this.id = id;
}
#Override
public String getId() {
return id;
}
}
#NodeEntity
public class NetworkEntity {
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
#Id
protected String id;
public List<NetworkInterfaceEntity> getInterfaces() {
return interfaces;
}
public void setInterfaces(List<NetworkInterfaceEntity> interfaces) {
this.interfaces = interfaces;
}
#Relationship(type = "is_composed_of")
protected List<NetworkInterfaceEntity> interfaces ;
}
#NodeEntity
public class NetworkInterfaceEntity {
public String getInterfaceId() {
return interfaceId;
}
public void setInterfaceId(String interfaceId) {
this.interfaceId = interfaceId;
}
public String getIpAddress() {
return ipAddress;
}
public void setIpAddress(String ipAddress) {
this.ipAddress = ipAddress;
}
public String getNetmask() {
return netmask;
}
public void setNetmask(String netmask) {
this.netmask = netmask;
}
public String getMacAddress() {
return macAddress;
}
public void setMacAddress(String macAddress) {
this.macAddress = macAddress;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public InterfaceState getState() {
return state;
}
public void setState(InterfaceState state) {
this.state = state;
}
public List<NetworkInterfaceEntity> getSubInterfaces() {
return subInterfaces;
}
public void setSubInterfaces(List<NetworkInterfaceEntity> subInterfaces) {
this.subInterfaces = subInterfaces;
}
public long getBytesSent() {
return bytesSent;
}
public void setBytesSent(long bytesSent) {
this.bytesSent = bytesSent;
}
public long getBytesRecived() {
return bytesRecived;
}
public void setBytesRecived(long bytesRecived) {
this.bytesRecived = bytesRecived;
}
#Id
private String interfaceId;
private String ipAddress;
private String netmask;
private String macAddress;
private String name;
private InterfaceState state;
#Relationship(type = "is_composed_of")
private List<NetworkInterfaceEntity> subInterfaces;
private long bytesSent;
private long bytesRecived;
}
When I now try to query the UnknownEntities via a Neo4j Crud Repository with a custom #Query Method, the UnknownEntities wont be nested with the necessary NetworkInterfaceObjects, even tough my query returns these.
public interface UnknownEntityRepository extends CrudRepository<UnknownEntity,String> {
#Query("MATCH (u:UnknownEntity)-[:is_composed_of]->(i:NetworkInterfaceEntity) WHERE i.ipAddress IN {0} WITH u as unknown MATCH p=(unknown)-[r*0..1]-() RETURN collect(unknown),nodes(p),rels(p)")
List<UnknownEntity> searchMachinesByIp(List<String> ipAddresses);
}
In this particular case the NetworkInterfaceEntities do not contain more subInterfaces, so I only want the NetworkInterfaceEntities that belong the the UnknownEntity. But when I use this Query I only get UnknownEntities where the NetworkInterfaceList is null. I even tried different Querys to no avail for example:
"MATCH p=(u:UnknownEntitie)-[:is_composed_of]-(n:NetworkInterfaceEntity) WHERE n.ipAddress in {0} RETURN collect(n),nodes(p),rels(p)".
My Question is, if what I want is even possible with SDN4 Data and if it is, how I can achieve this, Since my alternative is to query the database for every NetworkInterface separately, which I think is really ugly.
Any help would be much appreciated.

please try if returning the full path like this:
public interface UnknownEntityRepository extends CrudRepository<UnknownEntity,String> {
#Query("MATCH (u:UnknownEntity)-[:is_composed_of]->(i:NetworkInterfaceEntity) WHERE i.ipAddress IN {0} WITH u as unknown MATCH p=(unknown)-[r*0..1]-() RETURN p")
List<UnknownEntity> searchMachinesByIp(List<String> ipAddresses);
}
works for your. If not, try naming the objects in question, i.e. RETURN i as subInterfaces works for you.
Are you using Spring Data Neo4j 4 or 5? If you're on 4, consider the upgrade to 5 to be on a supported level.
Please let me know, if this helps.

Object become null when converted to json

Here is the problem, when I send my object to server using retrofit I got it null. I'm doing this to create the json object:
HashMap<String, UserModel> map = new HashMap<>();
map.put("user", user);
But, when the json arrives in the server I got something like this:
{"user":null}
Then I printed ny json file with this line:
Log.d("TAG", new JSONObject(map).toString());
And I saw the same null object.
So, here is my question, Why is this happening? And how can I fix that?
Here goes some information about my project:
Retrofit version: 2.0.0
Retrofit serializer: jackson version 2.0.0
using also jackson to convert JodaTime version 2.4.0
here goes how I get retrofit instance:
public T buildServiceInstance(Class<T> clazz){
return new Retrofit.Builder().baseUrl(BuildConfig.API_HOST)
.addConverterFactory(JacksonConverterFactory.create())
.build().create(clazz);
}
I call that method here:
public static final IUserApi serviceInstance = new ApiBuildRequester<IUserApi>()
.buildServiceInstance(IUserApi.class);
Method declaration on interface IUserApi:
#POST("User.svc/Save")
Call<ResponseSaveUserApiModel> save(#Body HashMap<String, UserModel> map);
And at last, but I guess, not less important:
public class UserModel implements Parcelable {
private String idUser;
private String name;
private String email;
#JsonProperty("password")
private String safePassword;
private String salt;
private String phoneNumber;
private String facebookProfilePictureUrl;
private String facebookUserId;
public UserModel() {
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getIdUser() {
return idUser;
}
public void setIdUser(String idUser) {
this.idUser = idUser;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getSafePassword() {
return safePassword;
}
public void setSafePassword(String safePassword) {
this.safePassword = safePassword;
}
public String getPhoneNumber() {
return phoneNumber;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
public String getFacebookProfilePictureUrl() {
return facebookProfilePictureUrl;
}
public void setFacebookProfilePictureUrl(String facebookProfilePictureUrl) {
this.facebookProfilePictureUrl = facebookProfilePictureUrl;
}
public String getFacebookUserId() {
return facebookUserId;
}
public void setFacebookUserId(String facebookUserId) {
this.facebookUserId = facebookUserId;
}
#Override
public int describeContents() {
return 0;
}
public UserModel(Parcel in) { // Deve estar na mesma ordem do "writeToParcel"
setIdUser(in.readString());
setName(in.readString());
setEmail(in.readString());
setSafePassword(in.readString());
setPhoneNumber(in.readString());
setFacebookProfilePictureUrl(in.readString());
setFacebookUserId(in.readString());
}
#Override
public void writeToParcel(Parcel dest, int flags) { //Deve estar na mesma ordem do construtor que recebe parcel
dest.writeString(idUser);
dest.writeString(name);
dest.writeString(email);
dest.writeString(safePassword);
dest.writeString(phoneNumber);
dest.writeString(facebookProfilePictureUrl);
dest.writeString(facebookUserId);
}
public static final Parcelable.Creator<UserModel> CREATOR = new Parcelable.Creator<UserModel>(){
#Override
public UserModel createFromParcel(Parcel source) {
return new UserModel(source);
}
#Override
public UserModel[] newArray(int size) {
return new UserModel[size];
}
};
public String getSalt() {
return salt;
}
public void setSalt(String salt) {
this.salt = salt;
}
}
Debug screen:

#Selvin and #cricket_007 You are the best!
I got this using your hint that my printing was wrong, and I found the solution.
I have two types of users in my app, facebook users or native users, two forms, but just one object, and here was the problem, when I sent facebook objects (complete) it worked fine, but when I tried to send native users, with some null properties, it crashed my serialization.
So I had to check every property before send it, it's just a workaround, but for now it's enough, thank you a lot folks!

Adobe Flash Builder does not refresh a value object

I'm currently facing a problem with Adobe Flash Builder, I work on a project with a Java core and services to communicate with a Flex client. (BlazeDS channel)
I decided to remove an array list in an object because it was no longer useful, so I commented the following lines in my object value to remove the ArrayList named "unitFactors"
public class UnitValue extends PhysicalQuantityObjectValue{
String symbol;
String name;
String description;
String physicalQuantityName;
//UnitFactorValue[] unitFactors;
UnitConstraintValue unitConstraint;
public UnitValue(AdnUnit unit) {
super(unit.getId());
//Constructor code ...
}
public UnitValue() {}
public String getSymbol() {
return symbol;
}
public void setSymbol(String symbol) {
this.symbol = symbol;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getPhysicalQuantityName() {
return physicalQuantityName;
}
public UnitValue(String symbol, String name, String description,
String physicalQuantityName,
UnitConstraintValue unitConstraint) {
super();
this.symbol = symbol;
this.name = name;
this.description = description;
this.physicalQuantityName = physicalQuantityName;
//this.unitFactors = unitFactors;
this.unitConstraint = unitConstraint;
}
public void setPhysicalQuantityName(String physicalQuantityName) {
this.physicalQuantityName = physicalQuantityName;
}
//public UnitFactorValue[] getUnitFactors() {
//return unitFactors;
//}
//public void setUnitFactors(UnitFactorValue[] unitFactors) {
//this.unitFactors = unitFactors;
//}
public UnitConstraintValue getUnitConstraint() {
return unitConstraint;
}
public void setUnitConstraint(UnitConstraintValue unitConstraint) {
this.unitConstraint = unitConstraint;
}
Well, no problem with the Java part. I tested it with SoapUI, everything's fine.
But when I switch on my Flex client code to refresh the valueObjects, it appears impossible to refresh UnitValue, unitFactors is still there, and it's obviously impossible to make my application work without errors on that specific point ... Can't find getUnitFactors().
Is someone facing the same problem with AdobeFlashBuilder?

Assign one json value for two fields in java using GSON

I am trying to assign the value returned by some function to a field in the deserialized class of json.
FileInfo.java
public class FileInfo {
#SerializedName("Name")
private String mName;
#SerializedName("Url")
private String mUri;
#SerializedName("Size")
private Integer mSize;
#SerializedName("ModTime")
private Long mModifiedTime;
private FileType mType;
#SerializedName("Children")
private ArrayList<FileInfo> mChildren = new ArrayList<>();
public ArrayList<FileInfo> getChildren() {
return mChildren;
}
public long getModifiedTime() {
return mModifiedTime;
}
public String getName() {
return mName;
}
public Integer getSize() {
return mSize;
}
public String getUrl() {
return mUri;
}
public FileType getType() {
return mType;
}
public void setChildren(ArrayList<FileInfo> mChildren) {
this.mChildren = mChildren;
}
public void setModifiedTime(long mModifiedTime) {
this.mModifiedTime = mModifiedTime;
}
public void setName(String mName) {
this.mName = mName;
}
public void setSize(Integer mSize) {
this.mSize = mSize;
}
public void setType(FileType mType) {
this.mType = mType;
}
public void setUri(String mUri) {
this.mUri = mUri;
}
#Override
public String toString() {
return FileInfo.class.toString();
}
public FileInfo() {
}
}
The mType needs to be assigned to foo(mName). I looked up custom deserializers and instance creators but none of those helped. I also thought of TypeAdapters which i feel defeats the purpose of keeping deserialization(using GSON) simple.
This is a sample JSON string that will be deserialized.
[
{
"Name":"Airport",
"Url":"http://192.168.2.2/api/sites/Baltimore%20Airport/Airport",
"Size":0,
"ModTime":"2015-12-02T14:19:17.29824-05:00",
"Children":null
}
]
P.S. I'm not sure if this should be done during deserialization but trying anyways. Also please let me know of alternative ways to achieve this.

AzureMobileService: Insert data in to table gives exception

I am new to implement Azure Mobile Service. I have refer the demo of ToDoItem given by Azure.
In same manner i have make class User for my own app. Then I am inserting the data in to the MobileServiceTable but it gives me error like below:
{"message":"The operation failed with the following error: 'A null store-generated value was returned for a non-nullable member 'CreatedAt' of type 'CrazyLabApp.Models.User'.'."}
I have not created any field like this as it is not created in ToDoItem demo as well. I have seen that there are 4 fields that are by Default created by the MobileServiceTable. createdAt is one of the field of that.
I am wonder about whats wrong i am doing.
Check my below Userclass:
public class User {
#com.google.gson.annotations.SerializedName("id")
private String ServiceUserId;
#com.google.gson.annotations.SerializedName("email")
private String Email;
#com.google.gson.annotations.SerializedName("firstname")
private String FirstName;
#com.google.gson.annotations.SerializedName("lastname")
private String LastName;
#com.google.gson.annotations.SerializedName("profilepic")
private String ProfilePic;
#com.google.gson.annotations.SerializedName("introduction")
private String Introduction;
#com.google.gson.annotations.SerializedName("website")
private String Website;
#com.google.gson.annotations.SerializedName("title")
private String Title;
#com.google.gson.annotations.SerializedName("_createdAt")
private Date CreatedAt;
#com.google.gson.annotations.SerializedName("coverimage")
private ArrayList<CoverImage> CoverImages;
/*public Date getCreatedAt() {
return CreatedAt;
}
public void setCreatedAt(Date createdAt) {
CreatedAt = createdAt;
}*/
#com.google.gson.annotations.SerializedName("followers")
private ArrayList<User> Followers;
#com.google.gson.annotations.SerializedName("likes")
private ArrayList<Likes> Likes;
#com.google.gson.annotations.SerializedName("collections")
private ArrayList<Collections> Collections;
#com.google.gson.annotations.SerializedName("comments")
private ArrayList<Comments> Comments;
#com.google.gson.annotations.SerializedName("stories")
private ArrayList<Story> Stories ;
//-------------- Methods
public ArrayList<Story> getStories() {
return Stories;
}
public void setStories(ArrayList<Story> stories) {
Stories = stories;
}
public ArrayList<com.promact.crazylab.model.Comments> getComments() {
return Comments;
}
public void setComments(ArrayList<com.promact.crazylab.model.Comments> comments) {
Comments = comments;
}
public ArrayList<com.promact.crazylab.model.Collections> getCollections() {
return Collections;
}
public void setCollections(ArrayList<com.promact.crazylab.model.Collections> collections) {
Collections = collections;
}
public ArrayList<com.promact.crazylab.model.Likes> getLikes() {
return Likes;
}
public void setLikes(ArrayList<com.promact.crazylab.model.Likes> likes) {
Likes = likes;
}
public ArrayList<User> getFollowers() {
return Followers;
}
public void setFollowers(ArrayList<User> followers) {
Followers = followers;
}
public ArrayList<CoverImage> getCoverImages() {
return CoverImages;
}
public void setCoverImages(ArrayList<CoverImage> coverImages) {
CoverImages = coverImages;
}
public String getTitle() {
return Title;
}
public void setTitle(String title) {
Title = title;
}
public String getWebsite() {
return Website;
}
public void setWebsite(String website) {
Website = website;
}
public String getIntroduction() {
return Introduction;
}
public void setIntroduction(String introduction) {
Introduction = introduction;
}
public String getLastName() {
return LastName;
}
public void setLastName(String lastName) {
LastName = lastName;
}
public String getProfilePic() {
return ProfilePic;
}
public void setProfilePic(String profilePic) {
ProfilePic = profilePic;
}
public String getEmail() {
return Email;
}
public void setEmail(String email) {
Email = email;
}
public String getFirstName() {
return FirstName;
}
public void setFirstName(String firstName) {
FirstName = firstName;
}
public String getServiceUserId() {
return ServiceUserId;
}
public void setServiceUserId(String serviceUserId) {
ServiceUserId = serviceUserId;
}
#Override
public boolean equals(Object o) {
return o instanceof User && ((User) o).ServiceUserId == ServiceUserId;
}
}
Also check below code the way i am inserting it:
final User u = new User();
u.setFirstName(mName);
u.setEmail(mEmail);
u.setProfilePic(mUrl);
mUserTable = mClient.getTable(User.class);
// Insert the new item
new AsyncTask<Void, Void, Void>(){
#Override
protected Void doInBackground(Void... params) {
try {
final User entity = mUserTable.insert(u).get();
} catch (Exception e){
//createAndShowDialog(e, "Error");
System.out.println("Error: "+e.toString());
}
return null;
}
}.execute();
Please help me in this.

The "_createdat" column will be populated automatically by Azure Mobile Services so there is no need to include it in your model. Delete this property from the User class. Its presence is probably overwriting the auto-populated value with a null.

you can solve this problem by just deleting createdAt column from your user table in azure.
Why this error is coming :
I am not sure But I guess this error is coming because createdAt is a non-nullable member and you cannot left it null.
EDIT :
Another aspect of the system columns is that they cannot be sent by the client. For new tables (i.e., those with string ids), if an insert of update request contains a property which starts with ‘__’ (two underscore characters), the request will be rejected. The ‘__createdAt’ property can, however, be set in the server script (although if you really don’t want that column to represent the creation time of the object, you may want to use another column for that) – one way where this (rather bizarre) scenario can be accomplished. If you try to update the ‘__updatedAt’ property, it won’t fail, but by default that column is updated by a SQL trigger, so any updates you make to it will be overridden anyway.
for more info take a look here :-http://blogs.msdn.com/b/carlosfigueira/archive/2013/11/23/new-tables-in-azure-mobile-services-string-id-system-properties-and-optimistic-concurrency.aspx