lowka commented on code in PR #3187: URL: https://github.com/apache/ignite-3/pull/3187#discussion_r1494197597
########## modules/sql-engine/src/main/java/org/apache/ignite/internal/sql/engine/prepare/pruning/PartitionPruningPredicate.java: ########## @@ -0,0 +1,201 @@ +/* + * 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.sql.engine.prepare.pruning; + +import static org.apache.ignite.internal.util.IgniteUtils.newHashMap; + +import it.unimi.dsi.fastutil.ints.Int2ObjectMap; +import it.unimi.dsi.fastutil.ints.IntArraySet; +import it.unimi.dsi.fastutil.ints.IntSet; +import java.time.Instant; +import java.time.LocalDate; +import java.time.LocalDateTime; +import java.time.LocalTime; +import java.time.ZoneId; +import java.util.ArrayList; +import java.util.Calendar; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.Set; +import org.apache.calcite.rex.RexDynamicParam; +import org.apache.calcite.rex.RexLiteral; +import org.apache.calcite.rex.RexNode; +import org.apache.calcite.util.ImmutableIntList; +import org.apache.calcite.util.TimestampString; +import org.apache.ignite.internal.sql.engine.exec.NodeWithConsistencyToken; +import org.apache.ignite.internal.sql.engine.exec.PartitionWithConsistencyToken; +import org.apache.ignite.internal.sql.engine.exec.mapping.ColocationGroup; +import org.apache.ignite.internal.sql.engine.schema.IgniteTable; +import org.apache.ignite.internal.sql.engine.schema.PartitionCalculator; +import org.apache.ignite.internal.type.NativeType; +import org.apache.ignite.internal.type.NativeTypeSpec; +import org.jetbrains.annotations.Nullable; + +/** + * Partition predicate encapsulates partition pruning logic. + */ +public final class PartitionPruningPredicate { + + private static final ZoneId ZONE_ID_UTC = ZoneId.of("UTC"); + + private final int tablePartitions; + + // TODO: https://issues.apache.org/jira/browse/IGNITE-21543 Remove after is resolved, + // remaining partitions should always be not null. + @Nullable + private final IntSet remainingPartitions; + + /** + * Constructor. + * + * @param table Table. + * @param pruningColumns Columns. + * @param dynamicParameters Values of dynamic parameters. + */ + public PartitionPruningPredicate(IgniteTable table, PartitionPruningColumns pruningColumns, Object[] dynamicParameters) { + this.tablePartitions = table.partitions(); + this.remainingPartitions = computeRemainingPartitions(table, pruningColumns, dynamicParameters); + } + + /** + * Applies partition pruning to the given colocation group. This group should have the same number of assignments as the source table. + * + * @param colocationGroup Colocation group. + * + * @return New colocation group. + */ + public ColocationGroup prunePartitions(ColocationGroup colocationGroup) { + assert tablePartitions == colocationGroup.assignments().size() : "Number of partitions does not match"; + + if (remainingPartitions == null) { + return colocationGroup; + } + + Map<String, List<PartitionWithConsistencyToken>> partitionsPerNode = newHashMap(colocationGroup.nodeNames().size()); + Set<String> newNodes = new HashSet<>(); + + for (String nodeName : colocationGroup.nodeNames()) { + List<PartitionWithConsistencyToken> partsWithConsistencyTokens = new ArrayList<>(); + + for (int p = 0; p < colocationGroup.assignments().size(); p++) { + NodeWithConsistencyToken nodeWithConsistencyToken = colocationGroup.assignments().get(p); + if (!remainingPartitions.contains(p)) { + continue; + } + + if (Objects.equals(nodeName, nodeWithConsistencyToken.name())) { + long t = nodeWithConsistencyToken.enlistmentConsistencyToken(); + + partsWithConsistencyTokens.add(new PartitionWithConsistencyToken(p, t)); + newNodes.add(nodeName); + } + } + + if (!partsWithConsistencyTokens.isEmpty()) { + partitionsPerNode.put(nodeName, partsWithConsistencyTokens); + } + } + + // Keep assignments intact, because they are used by DestinationFactory. + return new ColocationGroup( + colocationGroup.sourceIds(), + List.copyOf(newNodes), + colocationGroup.assignments(), + partitionsPerNode + ); + } + + @Nullable + private static IntSet computeRemainingPartitions( + IgniteTable table, + PartitionPruningColumns pruningColumns, + Object[] dynamicParameters + ) { + ImmutableIntList keys = table.distribution().getKeys(); + IntSet remainingPartitions = new IntArraySet(pruningColumns.columns().size()); + PartitionCalculator partitionCalculator = table.partitionCalculator().get(); + + for (Int2ObjectMap<RexNode> columns : pruningColumns.columns()) { + for (int key : keys) { + RexNode node = columns.get(key); + NativeType physicalType = table.descriptor().columnDescriptor(key).physicalType(); + + // TODO: https://issues.apache.org/jira/browse/IGNITE-21543 + // Remove after this issue makes it possible to have CAST('uuid_str' AS UUID) as value. + if (physicalType.spec() == NativeTypeSpec.UUID) { Review Comment: Fixed. -- This is an automated message from the Apache Git Service. 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