| /* |
| * 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.orc.impl; |
| |
| import org.apache.orc.EncryptionVariant; |
| import org.apache.orc.OrcProto; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * The name of a stream within a stripe. |
| * |
| * Sorted by area, encryption, column, and then kind. |
| */ |
| public class StreamName implements Comparable<StreamName> { |
| private final int column; |
| private final EncryptionVariant encryption; |
| private final OrcProto.Stream.Kind kind; |
| |
| public enum Area { |
| DATA, INDEX, FOOTER |
| } |
| |
| public StreamName(int column, OrcProto.Stream.Kind kind) { |
| this(column, kind, null); |
| } |
| |
| public StreamName(int column, OrcProto.Stream.Kind kind, |
| EncryptionVariant encryption) { |
| this.column = column; |
| this.kind = kind; |
| this.encryption = encryption; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof StreamName) { |
| StreamName other = (StreamName) obj; |
| return other.column == column && other.kind == kind && |
| encryption == other.encryption; |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public int compareTo(@NotNull StreamName streamName) { |
| Area area = getArea(); |
| Area otherArea = streamName.getArea(); |
| if (area != otherArea) { |
| return otherArea.compareTo(area); |
| } else if (encryption != streamName.encryption) { |
| if (encryption == null || streamName.encryption == null) { |
| return encryption == null ? -1 : 1; |
| } else { |
| return encryption.getVariantId() < streamName.encryption.getVariantId()? |
| -1 : 1; |
| } |
| } else if (column != streamName.column) { |
| return column < streamName.column ? -1 : 1; |
| } |
| return kind.compareTo(streamName.kind); |
| } |
| |
| public int getColumn() { |
| return column; |
| } |
| |
| public OrcProto.Stream.Kind getKind() { |
| return kind; |
| } |
| |
| public Area getArea() { |
| return getArea(kind); |
| } |
| |
| public static Area getArea(OrcProto.Stream.Kind kind) { |
| switch (kind) { |
| case FILE_STATISTICS: |
| case STRIPE_STATISTICS: |
| return Area.FOOTER; |
| case ROW_INDEX: |
| case DICTIONARY_COUNT: |
| case BLOOM_FILTER: |
| case BLOOM_FILTER_UTF8: |
| case ENCRYPTED_INDEX: |
| return Area.INDEX; |
| default: |
| return Area.DATA; |
| } |
| } |
| |
| /** |
| * Get the encryption information for this stream. |
| * @return the encryption information or null if it isn't encrypted |
| */ |
| public EncryptionVariant getEncryption() { |
| return encryption; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder buffer = new StringBuilder(); |
| buffer.append("column "); |
| buffer.append(column); |
| buffer.append(" kind "); |
| buffer.append(kind); |
| if (encryption != null) { |
| buffer.append(" encrypt "); |
| buffer.append(encryption.getKeyDescription()); |
| } |
| return buffer.toString(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return (encryption == null ? 0 : encryption.getVariantId() * 10001) + |
| column * 101 + kind.getNumber(); |
| } |
| } |
| |