add @transient to not store fields.

Author: kuros

pom.xml

@@ -12,7 +12,7 @@
 
     <groupId>in.kuros</groupId>
     <artifactId>jFirebase</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.1</version>
 
 
     <description>This project aims at building a wrapper over nosql technologies - Firebase</description>

src/main/java/in/kuros/jfirebase/entity/Transient.java

@@ -0,0 +1,11 @@
+package in.kuros.jfirebase.entity;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface Transient {
+}

src/main/java/in/kuros/jfirebase/util/BeanMapper.java

@@ -11,6 +11,7 @@
 import in.kuros.jfirebase.entity.Parent;
 import in.kuros.jfirebase.entity.Temporal;
 import in.kuros.jfirebase.entity.TemporalType;
+import in.kuros.jfirebase.entity.Transient;
 import in.kuros.jfirebase.entity.UpdateTime;
 import lombok.Getter;
 import lombok.SneakyThrows;
@@ -23,9 +24,11 @@
 import java.lang.reflect.Type;
 import java.util.Date;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Optional;
+import java.util.Set;
 
 @Getter
 public class BeanMapper<T> {
@@ -40,6 +43,7 @@ public class BeanMapper<T> {
     private final Map<String, Method> getters;
     private final Map<String, Method> setters;
     private final Map<String, Field> fields;
+    private final Set<String> transients;
     private final Map<String, Temporal> temporals;
     private final String createTime;
     private final String updateTime;
@@ -56,6 +60,7 @@ public BeanMapper(final Class<T> clazz) {
         this.idReferences = new HashMap<>();
         this.parent = new HashMap<>();
         this.temporals = new HashMap<>();
+        this.transients = new HashSet<>();
 
         Constructor<T> constructor;
         try {
@@ -86,6 +91,9 @@ public BeanMapper(final Class<T> clazz) {
 
                 final Field declaredField = clazz.getDeclaredField(propertyName);
                 declaredField.setAccessible(true);
+                if (declaredField.isAnnotationPresent(Transient.class)) {
+                    transients.add(propertyName);
+                }
                 if (idProperty != null && declaredField.isAnnotationPresent(Id.class)) {
                     throw new EntityDeclarationException("Multiple @Id mapping found or class: " + clazz.getName());
                 } else if (declaredField.isAnnotationPresent(Id.class)) {
@@ -211,6 +219,10 @@ public Map<String, Object> serialize(T object) {
         Map<String, Object> result = new HashMap<>();
         for (String property : properties.values()) {
 
+            if (transients.contains(property)) {
+                continue;
+            }
+
             Object propertyValue;
             if (getters.containsKey(property)) {
                 Method getter = getters.get(property);