maedhroz commented on code in PR #2916: URL: https://github.com/apache/cassandra/pull/2916#discussion_r1397976468
########## src/java/org/apache/cassandra/index/sai/utils/IndexTermType.java: ########## @@ -0,0 +1,858 @@ +/* + * 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.cassandra.index.sai.utils; + +import java.math.BigInteger; +import java.net.InetAddress; +import java.nio.ByteBuffer; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Collections; +import java.util.Comparator; +import java.util.Iterator; +import java.util.List; +import java.util.Objects; +import java.util.Set; +import java.util.stream.Stream; +import java.util.stream.StreamSupport; + +import com.google.common.base.MoreObjects; +import com.google.common.collect.ImmutableSet; + +import com.googlecode.concurrenttrees.radix.ConcurrentRadixTree; +import org.apache.cassandra.cql3.CQL3Type; +import org.apache.cassandra.cql3.Operator; +import org.apache.cassandra.cql3.statements.schema.IndexTarget; +import org.apache.cassandra.db.DecoratedKey; +import org.apache.cassandra.db.filter.RowFilter; +import org.apache.cassandra.db.marshal.AbstractType; +import org.apache.cassandra.db.marshal.AsciiType; +import org.apache.cassandra.db.marshal.BooleanType; +import org.apache.cassandra.db.marshal.ByteBufferAccessor; +import org.apache.cassandra.db.marshal.CollectionType; +import org.apache.cassandra.db.marshal.CompositeType; +import org.apache.cassandra.db.marshal.DecimalType; +import org.apache.cassandra.db.marshal.InetAddressType; +import org.apache.cassandra.db.marshal.IntegerType; +import org.apache.cassandra.db.marshal.LongType; +import org.apache.cassandra.db.marshal.StringType; +import org.apache.cassandra.db.marshal.UTF8Type; +import org.apache.cassandra.db.marshal.UUIDType; +import org.apache.cassandra.db.marshal.VectorType; +import org.apache.cassandra.db.rows.Cell; +import org.apache.cassandra.db.rows.ComplexColumnData; +import org.apache.cassandra.db.rows.Row; +import org.apache.cassandra.index.sai.plan.Expression; +import org.apache.cassandra.schema.ColumnMetadata; +import org.apache.cassandra.serializers.MarshalException; +import org.apache.cassandra.utils.ByteBufferUtil; +import org.apache.cassandra.utils.FastByteOperations; +import org.apache.cassandra.utils.bytecomparable.ByteComparable; +import org.apache.cassandra.utils.bytecomparable.ByteSource; +import org.apache.cassandra.utils.bytecomparable.ByteSourceInverse; + +/** + * This class is a representation of an {@link AbstractType} as an indexable type. It is responsible for determining the + * capabilities of the type and provides helper methods for handling term values associated with the type. + */ +public class IndexTermType +{ + private static final Set<AbstractType<?>> EQ_ONLY_TYPES = ImmutableSet.of(UTF8Type.instance, + AsciiType.instance, + BooleanType.instance, + UUIDType.instance); + + private static final byte[] IPV4_PREFIX = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1 }; + + /** + * DecimalType / BigDecimal values are indexed by truncating their asComparableBytes representation to this size, + * padding on the right with zero-value-bytes until this size is reached (if necessary). This causes + * false-positives that must be filtered in a separate step after hitting the index and reading the associated + * (full) values. + */ + private static final int DECIMAL_APPROXIMATION_BYTES = 24; + private static final int BIG_INTEGER_APPROXIMATION_BYTES = 20; + private static final int INET_ADDRESS_SIZE = 16; + private static final int DEFAULT_FIXED_LENGTH = 16; + + private static final int IS_LITERAL = 1; + private static final int IS_STRING = 1 << 1; + private static final int IS_VECTOR = 1 << 2; + private static final int IS_REVERSED = 1 << 3; + private static final int IS_FROZEN = 1 << 4; + private static final int IS_NON_FROZEN_COLLECTION = 1 << 5; + private static final int IS_COMPOSITE = 1 << 6; + private static final int IS_INET_ADDRESS = 1 << 7; + private static final int IS_BIG_INTEGER = 1 << 8; + private static final int IS_BIG_DECIMAL = 1 << 9; + private static final int IS_LONG = 1 << 10; + private static final int IS_COMPOSITE_PARTITION = 1 << 11; Review Comment: ...and usage... ``` private boolean isCompositePartition() { return capabilities.contains(Flag.IS_COMPOSITE_PARTITION); } ``` -- This is an automated message from the Apache Git Service. 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