timoninmaxim commented on a change in pull request #8490: URL: https://github.com/apache/ignite/pull/8490#discussion_r586747735
########## File path: modules/core/src/main/java/org/apache/ignite/cache/query/index/sorted/SortedIndex.java ########## @@ -0,0 +1,94 @@ +/* + * 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.cache.query.index.sorted; + +import org.apache.ignite.IgniteCheckedException; +import org.apache.ignite.cache.query.index.Index; +import org.apache.ignite.internal.cache.query.index.sorted.inline.io.IndexSearchRow; +import org.apache.ignite.internal.util.lang.GridCursor; +import org.apache.ignite.spi.indexing.IndexingQueryFilter; +import org.jetbrains.annotations.Nullable; + +/** + * Interface for sorted Ignite indexes. + */ +public interface SortedIndex extends Index { + /** + * Finds index rows by specified range in specifed tree segment. Range can be bound or unbound. + * + * @param lower Nullable lower bound. + * @param upper Nullable upper bound. + * @param segment Number of tree segment to find. + * @return Cursor of found index rows. + */ + public GridCursor<IndexSearchRow> find(@Nullable IndexKey lower, @Nullable IndexKey upper, int segment) throws IgniteCheckedException; + + /** + * Finds index rows by specified range in specifed tree segment with cache filtering. Range can be bound or unbound. + * + * @param lower Nullable lower bound. + * @param upper Nullable upper bound. + * @param segment Number of tree segment to find. + * @param filter Cache entry filter. + * @return Cursor of found index rows. + */ + public GridCursor<IndexSearchRow> find(IndexKey lower, IndexKey upper, int segment, IndexingQueryFilter filter) + throws IgniteCheckedException; + + /** + * Finds first or last index row for specified tree segment and cache filter. + * + * @param firstOrLast if {@code true} then return first index row or otherwise last row. + * @param segment Number of tree segment to find. + * @param filter Cache entry filter. + * @return Cursor of found index rows. + */ + public GridCursor<IndexSearchRow> findFirstOrLast(boolean firstOrLast, int segment, IndexingQueryFilter filter) + throws IgniteCheckedException; + + /** + * Counts index rows in specified tree segment. + * + * @param segment Number of tree segment to find. + * @return count of index rows for specified segment. + */ + public long count(int segment) throws IgniteCheckedException; + + /** + * Counts index rows in specified tree segment with cache filter. + * + * @param segment Number of tree segment to find. + * @param filter Cache entry filter. + * @return count of index rows for specified segment. + */ + public long count(int segment, IndexingQueryFilter filter) throws IgniteCheckedException; + + /** + * Counts index rows for all segments. + * + * @return total count of index rows. + */ + public long totalCount() throws IgniteCheckedException; + + /** + * Returns amount of index tree segments. + * + * @return amount of index tree segments. + */ + public int segmentsCount(); Review comment: I think, that it's not worth to add complexity to this hierarchy, as currently there is no non-segmented indexes. I've just renamed SortedIndex to SortedSegmentedIndex. ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected]
