From b3f5eaaafe0fc17abe4252881f058215adafa0af Mon Sep 17 00:00:00 2001
From: Peter Wu <peter@lekensteyn.nl>
Date: Wed, 7 May 2014 22:05:03 +0200
Subject: Fix null ptr when close/commit
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commit closes everything via safeClose, so ensure that tweetGenerated
re-opens it if necessary.

Fixes:
ƒ commit
€ Exception in thread "Thread-7" java.lang.NullPointerException
        at io.DataWriter.writeObject(DataWriter.java:137)
        at io.DataWriter.tweetGenerated(DataWriter.java:85)
        at provider.CompositeResultListener.tweetGenerated(CompositeResultListener.java:51)
        at io.StreamImpl$Poller.processObject(StreamImpl.java:255)
        at io.StreamImpl$Poller.run(StreamImpl.java:245)
        at java.lang.Thread.run(Thread.java:744)
---
 src/io/DataWriter.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/io/DataWriter.java b/src/io/DataWriter.java
index 4f4c022..c1e1ce9 100644
--- a/src/io/DataWriter.java
+++ b/src/io/DataWriter.java
@@ -82,7 +82,14 @@ public class DataWriter implements ResultListener, Closeable, Flushable {
 
     @Override
     public void tweetGenerated(JSONObject obj) {
-        writeObject(obj, m_tweet.getOutputStream(), m_tweetIdSet);
+        try {
+            // ensure that the file is open
+            m_tweet.open();
+
+            writeObject(obj, m_tweet.getOutputStream(), m_tweetIdSet);
+        } catch (IOException ex) {
+            getLogger().log(Level.SEVERE, "Cannot save tweet", ex);
+        }
     }
 
     /**
-- 
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