From 40bd7287038677d806dfe567e762198b7deca8ce Mon Sep 17 00:00:00 2001
From: Mike Hearn <hearn@google.com>
Date: Thu, 1 Mar 2012 18:55:46 +0100
Subject: [PATCH] Add a Transaction.getValue(Wallet) method.

---
 src/com/google/bitcoin/core/Transaction.java  | 7 +++++++
 tests/com/google/bitcoin/core/WalletTest.java | 1 +
 2 files changed, 8 insertions(+)

diff --git a/src/com/google/bitcoin/core/Transaction.java b/src/com/google/bitcoin/core/Transaction.java
index 9fdbe6f2..2917e9d1 100644
--- a/src/com/google/bitcoin/core/Transaction.java
+++ b/src/com/google/bitcoin/core/Transaction.java
@@ -288,6 +288,13 @@ public class Transaction extends ChildMessage implements Serializable {
         return v;
     }
 
+    /**
+     * Returns the difference of {@link Transaction#getValueSentFromMe(Wallet)} and {@link Transaction#getValueSentToMe(Wallet)}.
+     */
+    public BigInteger getValue(Wallet wallet) throws ScriptException {
+        return getValueSentToMe(wallet).subtract(getValueSentFromMe(wallet));
+    }
+
     boolean disconnectInputs() {
         boolean disconnected = false;
         maybeParse();
diff --git a/tests/com/google/bitcoin/core/WalletTest.java b/tests/com/google/bitcoin/core/WalletTest.java
index 165e393f..6f78e32a 100644
--- a/tests/com/google/bitcoin/core/WalletTest.java
+++ b/tests/com/google/bitcoin/core/WalletTest.java
@@ -251,6 +251,7 @@ public class WalletTest {
         // Reserialize.
         Transaction send2 = new Transaction(params, send1.bitcoinSerialize());
         assertEquals(nanos, send2.getValueSentFromMe(wallet));
+        assertEquals(BigInteger.ZERO.subtract(toNanoCoins(0, 10)), send2.getValue(wallet));
     }
 
     @Test