0.1.2

build.gradle

@@ -2,7 +2,7 @@ apply plugin: 'java'
 apply plugin: 'ivy-publish'
 
 sourceCompatibility = 1.6
-version = '0.1.1'
+version = '0.1.2'
 group = 'stellar'
 
 jar {

src/main/java/org/stellar/sdk/Account.java

@@ -21,20 +21,21 @@ public Account(KeyPair keypair, Long sequenceNumber) {
     mSequenceNumber = checkNotNull(sequenceNumber, "sequenceNumber cannot be null");
   }
 
-  /**
-   * Returns keypair associated with this Account
-   */
+  @Override
   public KeyPair getKeypair() {
     return mKeyPair;
   }
 
-  /**
-   * Returns current sequence number ot this Account.
-   */
+  @Override
   public Long getSequenceNumber() {
     return mSequenceNumber;
   }
 
+  @Override
+  public Long getIncrementedSequenceNumber() {
+    return new Long(mSequenceNumber + 1);
+  }
+
   /**
    * Increments sequence number in this object by one.
    */

src/main/java/org/stellar/sdk/Transaction.java

@@ -184,6 +184,10 @@ public Builder(TransactionBuilderAccount sourceAccount) {
       mOperations = Collections.synchronizedList(new ArrayList<Operation>());
     }
 
+    public int getOperationsCount() {
+      return mOperations.size();
+    }
+
     /**
      * Adds a new <a href="https://www.stellar.org/developers/learn/concepts/list-of-operations.html" target="_blank">operation</a> to this transaction.
      * @param operation
@@ -217,8 +221,10 @@ public Builder addMemo(Memo memo) {
     public Transaction build() {
       Operation[] operations = new Operation[mOperations.size()];
       operations = mOperations.toArray(operations);
+      Transaction transaction = new Transaction(mSourceAccount.getKeypair(), mSourceAccount.getIncrementedSequenceNumber(), operations, mMemo);
+      // Increment sequence number when there were no exceptions when creating a transaction
       mSourceAccount.incrementSequenceNumber();
-      return new Transaction(mSourceAccount.getKeypair(), mSourceAccount.getSequenceNumber(), operations, mMemo);
+      return transaction;
     }
   }
 }

src/main/java/org/stellar/sdk/TransactionBuilderAccount.java

@@ -14,6 +14,11 @@ public interface TransactionBuilderAccount {
    */
   Long getSequenceNumber();
 
+  /**
+   * Returns sequence number incremented by one, but does not increment internal counter.
+   */
+  Long getIncrementedSequenceNumber();
+
   /**
    * Increments sequence number in this object by one.
    */

src/main/java/org/stellar/sdk/responses/AccountResponse.java

@@ -55,6 +55,11 @@ public Long getSequenceNumber() {
     return sequenceNumber;
   }
 
+  @Override
+  public Long getIncrementedSequenceNumber() {
+    return new Long(sequenceNumber + 1);
+  }
+
   @Override
   public void incrementSequenceNumber() {
     sequenceNumber++;

src/test/java/org/stellar/sdk/ServerTest.java

@@ -84,11 +84,14 @@ Transaction buildTransaction() throws IOException {
         KeyPair destination = KeyPair.fromAccountId("GDW6AUTBXTOC7FIKUO5BOO3OGLK4SF7ZPOBLMQHMZDI45J2Z6VXRB5NR");
 
         Account account = new Account(source, 2908908335136768L);
-        Transaction transaction = new Transaction.Builder(account)
+        Transaction.Builder builder = new Transaction.Builder(account)
                 .addOperation(new CreateAccountOperation.Builder(destination, "2000").build())
-                .addMemo(Memo.text("Hello world!"))
-                .build();
+                .addMemo(Memo.text("Hello world!"));
 
+        assertEquals(1, builder.getOperationsCount());
+        Transaction transaction = builder.build();
+        assertEquals(2908908335136769L, transaction.getSequenceNumber());
+        assertEquals(new Long(2908908335136769L), account.getSequenceNumber());
         transaction.sign(source);
         return transaction;
     }