| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.ignite.internal.processors.cache.mvcc; |
| |
| import org.apache.ignite.internal.IgniteInternalFuture; |
| import org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion; |
| import org.apache.ignite.internal.processors.cache.GridCacheContext; |
| import org.apache.ignite.internal.processors.cache.distributed.near.GridNearTxLocal; |
| import org.apache.ignite.internal.util.future.GridFinishedFuture; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * Simple MVCC tracker used only as an Mvcc snapshot holder. |
| */ |
| public class StaticMvccQueryTracker implements MvccQueryTracker { |
| /** */ |
| private final MvccSnapshot snapshot; |
| /** */ |
| private final GridCacheContext cctx; |
| |
| /** |
| * @param cctx Cache context. |
| * @param snapshot Mvcc snapshot. |
| */ |
| public StaticMvccQueryTracker(GridCacheContext cctx, MvccSnapshot snapshot) { |
| this.snapshot = snapshot; |
| this.cctx = cctx; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public MvccSnapshot snapshot() { |
| assert snapshot != null : this; |
| |
| return snapshot; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public GridCacheContext context() { |
| return cctx; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public AffinityTopologyVersion topologyVersion() { |
| return AffinityTopologyVersion.NONE; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public IgniteInternalFuture<MvccSnapshot> requestSnapshot() { |
| return new GridFinishedFuture<>(snapshot); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public IgniteInternalFuture<MvccSnapshot> requestSnapshot(@NotNull final AffinityTopologyVersion topVer) { |
| return new GridFinishedFuture<>(snapshot); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void requestSnapshot(@NotNull AffinityTopologyVersion topVer, @NotNull MvccSnapshotResponseListener lsnr) { |
| lsnr.onResponse(snapshot); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void onDone() { |
| // No-op. |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public IgniteInternalFuture<Void> onDone(@NotNull GridNearTxLocal tx, boolean commit) { |
| throw new UnsupportedOperationException("Operation is not supported."); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public long onMvccCoordinatorChange(MvccCoordinator newCrd) { |
| return MVCC_TRACKER_ID_NA; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public long id() { |
| return MVCC_TRACKER_ID_NA; |
| } |
| } |