| /* |
| * 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.iceberg; |
| |
| import org.apache.iceberg.relocated.com.google.common.base.Preconditions; |
| |
| class InheritableMetadataFactory { |
| |
| private static final InheritableMetadata EMPTY = new EmptyInheritableMetadata(); |
| |
| private InheritableMetadataFactory() {} |
| |
| static InheritableMetadata empty() { |
| return EMPTY; |
| } |
| |
| static InheritableMetadata fromManifest(ManifestFile manifest) { |
| Preconditions.checkArgument( |
| manifest.snapshotId() != null, |
| "Cannot read from ManifestFile with null (unassigned) snapshot ID"); |
| return new BaseInheritableMetadata( |
| manifest.partitionSpecId(), manifest.snapshotId(), manifest.sequenceNumber()); |
| } |
| |
| static InheritableMetadata forCopy(long snapshotId) { |
| return new CopyMetadata(snapshotId); |
| } |
| |
| static class BaseInheritableMetadata implements InheritableMetadata { |
| private final int specId; |
| private final long snapshotId; |
| private final long sequenceNumber; |
| |
| private BaseInheritableMetadata(int specId, long snapshotId, long sequenceNumber) { |
| this.specId = specId; |
| this.snapshotId = snapshotId; |
| this.sequenceNumber = sequenceNumber; |
| } |
| |
| @Override |
| public <F extends ContentFile<F>> ManifestEntry<F> apply(ManifestEntry<F> manifestEntry) { |
| if (manifestEntry.file() instanceof BaseFile) { |
| BaseFile<?> file = (BaseFile<?>) manifestEntry.file(); |
| file.setSpecId(specId); |
| } |
| if (manifestEntry.snapshotId() == null) { |
| manifestEntry.setSnapshotId(snapshotId); |
| } |
| if (manifestEntry.sequenceNumber() == null) { |
| manifestEntry.setSequenceNumber(sequenceNumber); |
| } |
| return manifestEntry; |
| } |
| } |
| |
| static class CopyMetadata implements InheritableMetadata { |
| private final long snapshotId; |
| |
| private CopyMetadata(long snapshotId) { |
| this.snapshotId = snapshotId; |
| } |
| |
| @Override |
| public <F extends ContentFile<F>> ManifestEntry<F> apply(ManifestEntry<F> manifestEntry) { |
| manifestEntry.setSnapshotId(snapshotId); |
| return manifestEntry; |
| } |
| } |
| |
| static class EmptyInheritableMetadata implements InheritableMetadata { |
| |
| private EmptyInheritableMetadata() {} |
| |
| @Override |
| public <F extends ContentFile<F>> ManifestEntry<F> apply(ManifestEntry<F> manifestEntry) { |
| if (manifestEntry.snapshotId() == null) { |
| throw new IllegalArgumentException( |
| "Entries must have explicit snapshot ids if inherited metadata is empty"); |
| } |
| return manifestEntry; |
| } |
| } |
| } |