Mercurial > hg > Members > shoshi > jungle > jungle-core
view src/main/java/jp/ac/u_ryukyu/ie/cr/jungleNetwork/persistent/PersistentTransactionManager.java @ 224:437f6e037bd4
repair persistent
author | tatsuki |
---|---|
date | Sat, 03 Oct 2015 12:05:51 +0900 |
parents | f0cc848b9af6 |
children | a202f84bda52 |
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package jp.ac.u_ryukyu.ie.cr.jungleNetwork.persistent; import jp.ac.u_ryukyu.ie.cr.jungle.persistent.ChangeListWriter; import jp.ac.u_ryukyu.ie.cr.jungle.store.TreeContext; import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.TreeNode; import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.TreeOperationLog; import jp.ac.u_ryukyu.ie.cr.jungle.transaction.TransactionManager; import jp.ac.u_ryukyu.ie.cr.jungle.traverser.InterfaceTraverser; import jp.ac.u_ryukyu.ie.cr.jungle.util.DefaultEither; import jp.ac.u_ryukyu.ie.cr.jungle.util.DefaultError; import jp.ac.u_ryukyu.ie.cr.jungle.util.Either; import jp.ac.u_ryukyu.ie.cr.jungle.util.Error; import java.util.concurrent.atomic.AtomicReference; public class PersistentTransactionManager implements TransactionManager { private final AtomicReference<TreeContext> repository; private final TreeContext tip; private final ChangeListWriter writer; private final String uuid; private final String treeName; public PersistentTransactionManager(String _treeName, ChangeListWriter _writer, TreeContext _tip, AtomicReference<TreeContext> _repository, String _uuid) { repository = _repository; tip = _tip; writer = _writer; uuid = _uuid; treeName = _treeName; } @Override public Either<Error, TransactionManager> commit(TreeNode _newRoot, final TreeOperationLog _log) { long currentRevision = tip.revision(); long nextRevision = currentRevision + 1; PersistentChangeList list = new PersistentChangeList(uuid, treeName, _log); InterfaceTraverser traverser = new InterfaceTraverser(_newRoot, false); traverser.createIndex(); PersistentTreeContext newContext = new PersistentTreeContext(_newRoot, tip, list, uuid, treeName, nextRevision, traverser); if (repository.compareAndSet(newContext.prev(), newContext)) { writer.write(list); TransactionManager txManager = new PersistentTransactionManager(treeName, writer, newContext, repository, uuid); return DefaultEither.newB(txManager); } return DefaultEither.newA((Error) new DefaultError()); } @Override public long getRevision() { return tip.revision(); } @Override public String getUUID() { return uuid; } }