diff src/main/java/jp/ac/u_ryukyu/ie/cr/jungle/transaction/DefaultJungleTreeEditor.java @ 0:44465893e8b8

first Commit
author Kazuma
date Wed, 30 Nov 2016 01:47:55 +0900
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/jungle/transaction/DefaultJungleTreeEditor.java	Wed Nov 30 01:47:55 2016 +0900
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+package jp.ac.u_ryukyu.ie.cr.jungle.transaction;
+
+import jp.ac.u_ryukyu.ie.cr.jungle.JungleTreeEditor;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.NodePath;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.TreeEditor;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.DefaultNodePath;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.TreeNode;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.DefaultTreeOperationLog;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.LoggingNode;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.OperationLog;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.TreeOperationLog;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.operations.DefaultTreeOperation;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.operations.NodeOperation;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.operations.TreeOperation;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.trasnformer.*;
+import jp.ac.u_ryukyu.ie.cr.jungle.util.DefaultEither;
+import jp.ac.u_ryukyu.ie.cr.jungle.util.Either;
+import jp.ac.u_ryukyu.ie.cr.jungle.util.Error;
+import jp.ac.u_ryukyu.ie.cr.jungle.util.IterableConverter;
+
+import java.nio.ByteBuffer;
+
+public class DefaultJungleTreeEditor implements JungleTreeEditor
+{
+	private final TransactionManager txManager;
+	private final TreeNode root;
+	private final TreeEditor editor;
+	private final TreeOperationLog log;
+	
+
+	public DefaultJungleTreeEditor(TreeNode _root,TransactionManager _txManager,TreeEditor _editor)
+	{
+		this(_root,_txManager,_editor,new DefaultTreeOperationLog());
+	}
+	
+	
+	
+	public DefaultJungleTreeEditor(TreeNode newNode,TransactionManager _txManager,TreeEditor _editor,TreeOperationLog _log)
+	{
+		this.root = newNode;
+		this.txManager = _txManager;
+		this.editor = _editor;
+		this.log = _log;
+	}
+	
+	private Either<Error,JungleTreeEditor> _edit(final NodePath _path,NodeEditor _e)
+	{
+		Either<jp.ac.u_ryukyu.ie.cr.jungle.util.Error,LoggingNode> either = editor.edit(root,_path,_e);
+		if(either.isA()){
+			return DefaultEither.newA(either.a());
+		}
+		
+		LoggingNode newLogging = either.b();
+		OperationLog newLog = newLogging.getOperationLog();
+		TreeNode newNode = newLogging.getWrap();
+		
+		IterableConverter.Converter<TreeOperation,NodeOperation> converter = new IterableConverter.Converter<TreeOperation,NodeOperation>(){
+			@Override
+			public TreeOperation conv(NodeOperation _b){
+				return new DefaultTreeOperation(_path,_b);
+			}
+		};
+		
+		Iterable<TreeOperation> iterable = new IterableConverter<>(newLog,converter);
+		DefaultTreeOperationLog treeOperationLog = new DefaultTreeOperationLog(iterable,newLog.length());
+		TreeOperationLog newTreeOpLog = log.append(treeOperationLog);
+		
+		JungleTreeEditor newEditor = new DefaultJungleTreeEditor(newNode,txManager,editor,newTreeOpLog);
+		return DefaultEither.newB(newEditor);
+	}
+	
+	 @Override
+	  public Either<Error,JungleTreeEditor> replaceNewRootNode()
+	  {
+	   replaceRootNodeAt appendChildAt = new replaceRootNodeAt();
+	    return _edit(new DefaultNodePath(),appendChildAt);
+	  }
+	
+	@Override
+	public Either<Error,JungleTreeEditor> addNewChildAt(NodePath _path, int _pos)
+	{
+		AppendChildAt appendChildAt = new AppendChildAt(_pos);
+		return _edit(_path,appendChildAt);
+	}
+
+	@Override
+	public Either<Error,JungleTreeEditor> deleteChildAt(NodePath _path, int _pos)
+	{
+		DeleteChildAt deleteChildAt = new DeleteChildAt(_pos);
+		return _edit(_path,deleteChildAt);
+	}
+
+	@Override
+	public Either<Error,JungleTreeEditor> putAttribute(NodePath _path,String _key,ByteBuffer _value)
+	{
+		PutAttribute putAttribute = new PutAttribute(_key,_value);
+		return _edit(_path,putAttribute);
+	}
+
+	@Override
+	public Either<Error,JungleTreeEditor> deleteAttribute(NodePath _path, String _key)
+	{
+		DeleteAttribute deleteAttribute = new DeleteAttribute(_key);
+		return _edit(_path,deleteAttribute);
+	}
+
+	@Override
+	public Either<Error,JungleTreeEditor> edit(NodePath _path,NodeEditor _editor)
+	{
+		return _edit(_path,_editor);
+	}
+
+	@Override
+	public Either<Error,JungleTreeEditor> success()
+	{
+		Either<Error,TransactionManager> either = txManager.commit(root,log);
+		if(either.isA()){
+			return DefaultEither.newA(either.a());
+		}
+		
+		TransactionManager newTxManager = either.b();
+		JungleTreeEditor newTreeEditor = new DefaultJungleTreeEditor(root,newTxManager,editor);
+		
+		return DefaultEither.newB(newTreeEditor);
+	}
+
+    @Override
+    public Either<Error, JungleTreeEditor> flushSuccess() {
+        return success();
+    }
+
+
+}