change Expose annotation to transient

Change-Id: I2adb33f1e032d0604f6ee7a39e02ea194e78e55b

jams-common/src/main/java/net/jami/jams/common/objects/contacts/Contact.java

@@ -23,7 +23,6 @@
 
 package net.jami.jams.common.objects.contacts;
 
-import com.google.gson.annotations.Expose;
 
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
@@ -41,8 +40,7 @@ import java.sql.ResultSet;
 @EqualsAndHashCode
 public class Contact implements DatabaseObject {
 
-    @Expose(serialize = false)
-    private String owner;
+    private transient String owner;
 
     private String uri;
     private String displayName;

jams-common/src/main/java/net/jami/jams/common/objects/devices/Device.java

@@ -22,7 +22,6 @@
  */
 package net.jami.jams.common.objects.devices;
 
-import com.google.gson.annotations.Expose;
 
 import lombok.AllArgsConstructor;
 import lombok.Getter;
@@ -44,8 +43,7 @@ public class Device extends X509Entity implements DatabaseObject {
 
     private String deviceId;
 
-    @Expose(serialize = false)
-    private String owner;
+    private transient String owner;
 
     private String displayName;
 

jams-common/src/main/java/net/jami/jams/common/objects/roots/X509Entity.java

@@ -27,8 +27,6 @@ import lombok.Setter;
 
 import org.bouncycastle.pkcs.PKCS10CertificationRequest;
 
-import com.google.gson.annotations.Expose;
-
 import java.security.PrivateKey;
 import java.security.cert.X509Certificate;
 
@@ -36,8 +34,7 @@ import java.security.cert.X509Certificate;
 @Setter
 public class X509Entity {
     private X509Certificate certificate;
-    @Expose(serialize = false)
-    private PrivateKey privateKey;
+    private transient PrivateKey privateKey;
     // These can be null because they are only used if this is a request.
     private X509Fields x509Fields;
     private PKCS10CertificationRequest certificationRequest;

jams-common/src/main/java/net/jami/jams/common/objects/user/User.java

@@ -36,8 +36,6 @@ import net.jami.jams.common.utils.X509Utils;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 
-import com.google.gson.annotations.Expose;
-
 @AllArgsConstructor
 @NoArgsConstructor
 @Getter
@@ -45,18 +43,15 @@ import com.google.gson.annotations.Expose;
 public class User extends X509Entity implements BlockchainEntity, DatabaseObject {
 
     private String username;
-    @Expose(serialize = false)
-    private String password;
+    private transient String password;
     private AuthenticationSourceType userType;
     private String realm; // sort of the domain.
     private AccessLevel accessLevel = AccessLevel.USER;
     private Boolean needsPasswordReset = false;
-    @Expose(serialize = false)
-    private String salt;
+    private transient String salt;
 
     private String ethAddress;
-    @Expose(serialize = false)
-    private String ethKey;
+    private transient String ethKey;
     private String jamiId;
 
     public User(ResultSet rs) throws Exception {