tkalkirill commented on a change in pull request #667: URL: https://github.com/apache/ignite-3/pull/667#discussion_r816816954
########## File path: modules/page-memory/src/main/java/org/apache/ignite/internal/pagememory/persistence/GroupPartitionId.java ########## @@ -0,0 +1,160 @@ +/* + * 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.pagememory.persistence; + +import static org.apache.ignite.internal.pagememory.PageIdAllocator.FLAG_AUX; +import static org.apache.ignite.internal.pagememory.PageIdAllocator.FLAG_DATA; +import static org.apache.ignite.internal.pagememory.PageIdAllocator.INDEX_PARTITION; +import static org.apache.ignite.internal.pagememory.util.PageIdUtils.pageId; + +import org.apache.ignite.internal.pagememory.FullPageId; +import org.apache.ignite.internal.tostring.S; + +/** + * Pair of group ID with partition ID. Immutable, comparable class, may be used as key in maps. + */ +public class GroupPartitionId implements Comparable<GroupPartitionId> { + /** Index for super(meta) page. There is always such page for iterated cache partition. */ + private static final int METAPAGE_IDX = 0; + + /** Group ID. */ + private final int grpId; + + /** Partition ID. */ + private final int partId; + + /** + * Creates group-partition tuple. + * + * @param grpId Group ID. + * @param partId Partition ID. + */ + public GroupPartitionId(final int grpId, final int partId) { + this.grpId = grpId; + this.partId = partId; + } + + /** + * Returns flag to be used for partition. + * + * @param partId Partition ID. + */ + public static byte getFlagByPartId(final int partId) { + return partId == INDEX_PARTITION ? FLAG_AUX : FLAG_DATA; + } + + /** + * Return group ID. + */ + public int getGroupId() { + return grpId; + } + + /** + * Return partition ID. + */ + public int getPartitionId() { + return partId; + } + + /** {@inheritDoc} */ + @Override + public String toString() { + return S.toString(GroupPartitionId.class, this); + } + + /** {@inheritDoc} */ + @Override + public boolean equals(Object o) { + if (this == o) { + return true; + } + + if (o == null || getClass() != o.getClass()) { + return false; + } + + GroupPartitionId key = (GroupPartitionId) o; + + if (grpId != key.grpId) { + return false; + } + + return partId == key.partId; + } + + /** {@inheritDoc} */ + @Override + public int hashCode() { + int result = grpId; + + result = 31 * result + partId; + + return result; + } + + /** {@inheritDoc} */ + @Override + public int compareTo(GroupPartitionId o) { + if (getGroupId() < o.getGroupId()) { + return -1; + } + + if (getGroupId() > o.getGroupId()) { + return 1; + } + + if (getPartitionId() < o.getPartitionId()) { + return -1; + } + + if (getPartitionId() > o.getPartitionId()) { + return 1; + } + + return 0; + } + + /** + * Returns page ID (64 bits) constructed from partition ID and given index. + * + * @param pageIdx Page Index, monotonically growing number within each partition. + */ + private long createPageId(final int pageIdx) { + final int partId = getPartitionId(); + + return pageId(partId, getFlagByPartId(partId), pageIdx); Review comment: The code is not needed got rid of it. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@ignite.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
