Mercurial > hg > Members > shoshi > jungle > jungle-core
view src/main/java/jp/ac/u_ryukyu/ie/cr/jungle/store/operations/DeleteAttributeOperation.java @ 265:b3a04bc21b23 Implementation_of_communication
add UnDefineNode
author | tatsuki |
---|---|
date | Tue, 13 Dec 2016 03:16:12 +0900 |
parents | e5275a599048 |
children | c62462c28807 |
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package jp.ac.u_ryukyu.ie.cr.jungle.store.operations; import java.nio.ByteBuffer; import jp.ac.u_ryukyu.ie.cr.jungle.store.Command; import jp.ac.u_ryukyu.ie.cr.jungle.transaction.node.TreeNode; import jp.ac.u_ryukyu.ie.cr.jungle.util.Either; import jp.ac.u_ryukyu.ie.cr.jungle.util.Error; public final class DeleteAttributeOperation implements NodeOperation { private final String key; public DeleteAttributeOperation(String _key) { key = _key; } @Override public Command getCommand() { return Command.DELETE_ATTRIBUTE; } @Override public Either<Error, TreeNode> invoke(TreeNode _target) { return _target.getAttributes().delete(key); } @Override public int getPosition() { return -1; } @Override public String getKey() { return key; } @Override public ByteBuffer getValue() { return null; } }