refactor: changes to Transaction object class (#34)

* Added method to return HashMap of transaction.

* Version bump

* chore: changelog

Author: Kristjan Kosic

CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## Unreleased
 
+## 0.1.3 - 2019-25-04
+
+### Fixed
+- Adjusted the JSON to Java Object conversion to support stricter incoming validation on the core.
+
 ## 0.1.2 - 2018-12-11
 
 ### Changed

build.gradle

@@ -46,7 +46,7 @@ uploadArchives {
 
             pom.project {
                 groupId = 'org.arkecosystem'
-                version = '0.1.2'
+                version = '0.1.3'
                 artifactId = 'crypto'
 
                 name = 'java-crypto'

src/main/java/org/arkecosystem/crypto/transactions/Transaction.java

@@ -214,7 +214,11 @@ public String serialize() {
     }
 
     public String toJson() {
+        GsonBuilder gsonBuilder = new GsonBuilder();
+        return gsonBuilder.create().toJson(this.toHashMap());
+    }
 
+    public HashMap toHashMap() {
         HashMap<String, Object> map = new HashMap<String, Object>();
         map.put("network", this.network);
         map.put("id", this.id);
@@ -257,9 +261,7 @@ public String toJson() {
         if (!asset.isEmpty()) {
             map.put("asset", asset);
         }
-
-        GsonBuilder gsonBuilder = new GsonBuilder();
-        return gsonBuilder.create().toJson(map);
+        return map;
     }
 
     private static class TransactionTypeDeserializer implements
@@ -278,5 +280,3 @@ public JsonElement serialize(Types src, Type typeOfSrc, JsonSerializationContext
         }
     }
 }
-
-