added ability to reset ext tx data and payload

Author: edwardstock

README.md

@@ -24,7 +24,7 @@ project build.gradle
 ```groovy
 
 ext {
-    minterBlockchainSDK = "0.13.0"
+    minterBlockchainSDK = "0.13.1"
 }
 
 dependencies {

RELEASE.md

@@ -1,5 +1,8 @@
 # Release notes
 
+## 0.13.1
+ - Ability to reset transaction data and payload in external transaction builder
+
 ## 0.13.0
  - Changes for signing transaction logic
  - Fixed some api result models

build.gradle

@@ -31,7 +31,7 @@ buildscript {
         mavenLocal()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.0'
+        classpath 'com.android.tools.build:gradle:4.0.1'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4'
     }
 }
@@ -57,12 +57,12 @@ apply plugin: 'com.jfrog.bintray'
 
 
 group = 'network.minter.android'
-version = '0.13.0'
+version = '0.13.1'
 
 ext {
     minterMinSdk = 16
     minterMaxSdk = 29
-    minterBuildTools = "29.0.2"
+    minterBuildTools = "29.0.3"
     minterLibSupport = "28.0.0"
     minterCoreVers = "0.7.1"
 

src/main/java/network/minter/blockchain/models/operational/ExternalTransaction.java

@@ -219,6 +219,20 @@ public void cleanup() {
         mPayload = null;
     }
 
+    public void resetPayload(BytesData payload) {
+        checkArgument(payload.size() <= 1024, "Payload maximum size: 1024 bytes");
+        mPayload = payload;
+    }
+
+    public <Op extends Operation> void resetData(Op operationData) {
+        mType = operationData.getType();
+        mOperationData = operationData;
+        FieldsValidationResult dataValidation = mOperationData.validate();
+        if (dataValidation != null) {
+            checkArgument(dataValidation.isValid(), dataValidation.getInvalidFieldsMessages());
+        }
+    }
+
     @Override
     public int describeContents() {
         return 0;
@@ -250,7 +264,7 @@ void decodeRLP(Object[] raw) {
     }
 
     public static class Builder {
-        private ExternalTransaction mTx;
+        private final ExternalTransaction mTx;
 
         public Builder() {
             mTx = new ExternalTransaction();
@@ -320,6 +334,11 @@ public Builder setPayload(ByteBuffer byteBuffer) {
         public <Op extends Operation> Builder setData(Op operationData) {
             mTx.mType = operationData.getType();
             mTx.mOperationData = operationData;
+            FieldsValidationResult dataValidation = mTx.mOperationData.validate();
+            if (dataValidation != null) {
+                checkArgument(dataValidation.isValid(), dataValidation.getInvalidFieldsMessages());
+            }
+
             return this;
         }