# HG changeset patch
# User Shoshi TAMAKI
# Date 1358916560 -32400
# Node ID 9f8b91265c3eeb874bf0d406753aaece18c930d9
# Parent  dd7776c8b6d5540f1e448219d7c2a4a2679d813c
added NullJournal

diff -r dd7776c8b6d5 -r 9f8b91265c3e src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/persistent/DefaultChangeListReader.java
--- a/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/persistent/DefaultChangeListReader.java	Thu Jan 17 00:44:05 2013 +0900
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/persistent/DefaultChangeListReader.java	Wed Jan 23 13:49:20 2013 +0900
@@ -1,7 +1,6 @@
 package jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent;
 
 import java.nio.ByteBuffer;
-import java.nio.MappedByteBuffer;
 import java.nio.channels.FileChannel;
 
 // not thread safe
@@ -27,6 +26,7 @@
 	@Override
 	public ChangeList read()
 	{
+		
 		return null;
 	}
 }
diff -r dd7776c8b6d5 -r 9f8b91265c3e src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/persistent/DefaultJournal.java
--- a/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/persistent/DefaultJournal.java	Thu Jan 17 00:44:05 2013 +0900
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/persistent/DefaultJournal.java	Wed Jan 23 13:49:20 2013 +0900
@@ -81,10 +81,9 @@
 	public static final int READ_BUFFER_SIZE = 1000000;  // 1MB
 	public static final int WRITE_BUFFER_SIZE = 1000000; // 1MB
 	
-	
 	private DefaultJournal()
 	{
-		
+		writer = null;
 	}
 	
 	public static Either<Error,DefaultJournal> newInstance(String _fileName)
diff -r dd7776c8b6d5 -r 9f8b91265c3e src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/persistent/NullJournal.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/persistent/NullJournal.java	Wed Jan 23 13:49:20 2013 +0900
@@ -0,0 +1,43 @@
+package jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent;
+
+public class NullJournal implements Journal
+{
+	private static final NullChangeListWriter NULL_WRITER = new NullChangeListWriter();
+	private static final NullChangeListReader NULL_READER = new NullChangeListReader();
+	
+	@Override
+	public ChangeListReader getReader()
+	{
+		return NULL_READER;
+	}
+
+	@Override
+	public ChangeListWriter getWriter()
+	{
+		return NULL_WRITER;
+	}
+	
+	private static class NullChangeListWriter implements ChangeListWriter
+	{
+		@Override
+		public Result write()
+		{
+			return Result.SUCCESS;
+		}
+	}
+	
+	private static class NullChangeListReader implements ChangeListReader
+	{
+		@Override
+		public ChangeListReader newReader()
+		{
+			return this;
+		}
+
+		@Override
+		public ChangeList read()
+		{
+			return null;
+		}
+	}
+}
diff -r dd7776c8b6d5 -r 9f8b91265c3e src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/store/operations/SetAttributeOperation.java
--- a/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/store/operations/SetAttributeOperation.java	Thu Jan 17 00:44:05 2013 +0900
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/store/operations/SetAttributeOperation.java	Wed Jan 23 13:49:20 2013 +0900
@@ -13,4 +13,4 @@
 	
 	public abstract String getKey();
 	public abstract ByteBuffer getValue();
-}
+}
\ No newline at end of file