alex-plekhanov commented on code in PR #11651: URL: https://github.com/apache/ignite/pull/11651#discussion_r1860806641
########## modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/IndexCountScan.java: ########## @@ -0,0 +1,198 @@ +/* + * 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.query.calcite.exec; + +import java.util.Collections; +import java.util.Iterator; +import java.util.List; +import java.util.function.Function; +import org.apache.calcite.rel.RelCollation; +import org.apache.calcite.rel.RelFieldCollation; +import org.apache.ignite.IgniteCheckedException; +import org.apache.ignite.IgniteException; +import org.apache.ignite.internal.cache.query.index.sorted.IndexRow; +import org.apache.ignite.internal.cache.query.index.sorted.InlineIndexRowHandler; +import org.apache.ignite.internal.cache.query.index.sorted.inline.IndexQueryContext; +import org.apache.ignite.internal.cache.query.index.sorted.inline.InlineIndex; +import org.apache.ignite.internal.cache.query.index.sorted.keys.NullIndexKey; +import org.apache.ignite.internal.processors.cache.GridCacheContext; +import org.apache.ignite.internal.processors.cache.persistence.CacheDataRow; +import org.apache.ignite.internal.processors.cache.persistence.tree.BPlusTree; +import org.apache.ignite.internal.processors.cache.persistence.tree.io.BPlusIO; +import org.apache.ignite.internal.processors.cache.transactions.TransactionChanges; +import org.apache.ignite.internal.util.typedef.F; +import org.apache.ignite.spi.indexing.IndexingQueryFilter; +import org.apache.ignite.spi.indexing.IndexingQueryFilterImpl; +import org.jetbrains.annotations.NotNull; +import org.jetbrains.annotations.Nullable; + +/** */ +public class IndexCountScan<Row> extends AbstractCacheScan<Row> { + /** */ + private final InlineIndex idx; + + /** */ + private final RelCollation collation; + + /** */ + private final boolean notNull; + + /** */ + public IndexCountScan( + ExecutionContext<Row> ectx, + GridCacheContext<?, ?> cctx, + int[] parts, + InlineIndex idx, + RelCollation collation, + boolean notNull + ) { + super(ectx, cctx, parts); + + this.idx = idx; + this.collation = collation; + this.notNull = notNull; + } + + /** {@inheritDoc} */ + @Override protected Iterator<Row> createIterator() { + boolean[] skipCheck = new boolean[] {false}; + + BPlusTree.TreeRowClosure<IndexRow, IndexRow> rowFilter = countRowFilter(skipCheck, notNull, idx); + + long cnt = 0; + + if (!F.isEmpty(ectx.getQryTxEntries())) { + TransactionChanges<CacheDataRow> txChanges = ectx.transactionChanges( + cctx.cacheId(), + parts, + Function.identity(), + null + ); + + if (!txChanges.changedKeysEmpty()) { + rowFilter = transactionAwareCountRowFilter(rowFilter, txChanges); + + cnt = countTransactionRows(notNull, idx, txChanges.newAndUpdatedEntries()); + } + } + + try { + IndexingQueryFilter filter = new IndexingQueryFilterImpl(cctx.kernalContext(), topVer, parts); + + for (int i = 0; i < idx.segmentsCount(); ++i) { + cnt += idx.count(i, new IndexQueryContext(filter, rowFilter)); + + skipCheck[0] = false; + } + + return Collections.singletonList(ectx.rowHandler().factory(long.class).create(cnt)).iterator(); + } + catch (IgniteCheckedException e) { + throw new IgniteException("Unable to count index records.", e); + } + } + + /** */ + private @Nullable BPlusTree.TreeRowClosure<IndexRow, IndexRow> countRowFilter(boolean[] skipCheck, boolean notNull, InlineIndex iidx) { + boolean checkExpired = !cctx.config().isEagerTtl(); + + if (notNull) { + boolean nullsFirst = collation.getFieldCollations().get(0).nullDirection == RelFieldCollation.NullDirection.FIRST; + + BPlusTree.TreeRowClosure<IndexRow, IndexRow> notNullRowFilter = IndexScan.createNotNullRowFilter(iidx, checkExpired); + + return new BPlusTree.TreeRowClosure<>() { + @Override public boolean apply( + BPlusTree<IndexRow, IndexRow> tree, + BPlusIO<IndexRow> io, + long pageAddr, + int idx + ) throws IgniteCheckedException { + // If we have NULLS-FIRST collation, all values after first not-null value will be not-null, + // don't need to check it with notNullRowFilter. + // In case of NULL-LAST collation, all values after first null value will be null, + // don't need to check it too. + if (skipCheck[0] && !checkExpired) + return nullsFirst; + + boolean res = notNullRowFilter.apply(tree, io, pageAddr, idx); + + if (res == nullsFirst) + skipCheck[0] = true; + + return res; + } + + @Override public IndexRow lastRow() { + return (skipCheck[0] && !checkExpired) + ? null + : notNullRowFilter.lastRow(); + } + }; + } + + return checkExpired ? IndexScan.createNotExpiredRowFilter() : null; + } + + /** */ + private static @NotNull BPlusTree.TreeRowClosure<IndexRow, IndexRow> transactionAwareCountRowFilter( Review Comment: Fixed -- 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
