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view src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/transaction/DefaultTreeNodeAttribute.java @ 183:066d9c5758dc
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author | tatsuki |
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date | Mon, 23 Mar 2015 15:44:28 +0900 |
parents | 809f813d1083 |
children | d455e0ee7f4e 868a746996ad |
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package jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction; import java.nio.ByteBuffer; import fj.data.List; import fj.data.Option; import fj.data.TreeMap; import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode; import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNodeAttributes; import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.trasnformer.NodeEditorError; import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither; import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either; import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error; public class DefaultTreeNodeAttribute implements TreeNodeAttributes { public List<TreeNode> children; public TreeMap<String,ByteBuffer> attrs; public DefaultTreeNodeAttribute(List<TreeNode> _children,TreeMap<String,ByteBuffer> _attrs) { children = _children; attrs = _attrs; } @Override public TreeMap<String,ByteBuffer> getAttributesAsRawMap(){ return attrs; } @Override public Either<Error,TreeNode> delete(String _key) { if (_key == null) { return DefaultEither.newA(NodeEditorError.NULL_VALUE_NOT_ALLOWED); } if (!attrs.contains(_key)) { return DefaultEither.newA(NodeEditorError.DELETE_KEY_NOT_FOUND); } TreeMap<String,ByteBuffer> newMap = attrs.delete(_key); TreeNode newNode = new DefaultTreeNode(children,newMap); return DefaultEither.newB(newNode); } @Override public Either<Error,TreeNode> put(String _key, ByteBuffer _value) { if (_key == null || _value == null) { return DefaultEither.newA(NodeEditorError.NULL_VALUE_NOT_ALLOWED); } TreeMap<String,ByteBuffer> newMap = attrs.set(_key,_value); TreeNode newNode = new DefaultTreeNode(children,newMap); return DefaultEither.newB(newNode); } @Override public ByteBuffer get(String _key) { if (_key == null) { return null; } ByteBuffer result = attrs.getLoop(_key); return result; } @Override public String getString(String key) { ByteBuffer attribute = get(key); if (attribute != null) return new String(attribute.array()); return null; } @Override public List<String> getKeys() { return attrs.keys(); } }