| /* |
| * 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.io.sstable; |
| |
| import java.io.*; |
| |
| import org.apache.cassandra.config.CFMetaData; |
| import org.apache.cassandra.db.*; |
| import org.apache.cassandra.db.rows.*; |
| import org.apache.cassandra.io.sstable.format.SSTableReader; |
| import org.apache.cassandra.io.util.FileDataInput; |
| import org.apache.cassandra.io.util.RandomAccessReader; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| |
| public class SSTableIdentityIterator implements Comparable<SSTableIdentityIterator>, UnfilteredRowIterator |
| { |
| private final SSTableReader sstable; |
| private final DecoratedKey key; |
| private final DeletionTime partitionLevelDeletion; |
| private final String filename; |
| |
| protected final SSTableSimpleIterator iterator; |
| private final Row staticRow; |
| |
| public SSTableIdentityIterator(SSTableReader sstable, DecoratedKey key, DeletionTime partitionLevelDeletion, |
| String filename, SSTableSimpleIterator iterator) throws IOException |
| { |
| super(); |
| this.sstable = sstable; |
| this.key = key; |
| this.partitionLevelDeletion = partitionLevelDeletion; |
| this.filename = filename; |
| this.iterator = iterator; |
| this.staticRow = iterator.readStaticRow(); |
| } |
| |
| public static SSTableIdentityIterator create(SSTableReader sstable, RandomAccessReader file, DecoratedKey key) |
| { |
| try |
| { |
| DeletionTime partitionLevelDeletion = DeletionTime.serializer.deserialize(file); |
| SerializationHelper helper = new SerializationHelper(sstable.metadata, sstable.descriptor.version.correspondingMessagingVersion(), SerializationHelper.Flag.LOCAL); |
| SSTableSimpleIterator iterator = SSTableSimpleIterator.create(sstable.metadata, file, sstable.header, helper, partitionLevelDeletion); |
| return new SSTableIdentityIterator(sstable, key, partitionLevelDeletion, file.getPath(), iterator); |
| } |
| catch (IOException e) |
| { |
| sstable.markSuspect(); |
| throw new CorruptSSTableException(e, file.getPath()); |
| } |
| } |
| |
| public static SSTableIdentityIterator create(SSTableReader sstable, FileDataInput dfile, RowIndexEntry<?> indexEntry, DecoratedKey key, boolean tombstoneOnly) |
| { |
| try |
| { |
| dfile.seek(indexEntry.position); |
| ByteBufferUtil.skipShortLength(dfile); // Skip partition key |
| DeletionTime partitionLevelDeletion = DeletionTime.serializer.deserialize(dfile); |
| SerializationHelper helper = new SerializationHelper(sstable.metadata, sstable.descriptor.version.correspondingMessagingVersion(), SerializationHelper.Flag.LOCAL); |
| SSTableSimpleIterator iterator = tombstoneOnly |
| ? SSTableSimpleIterator.createTombstoneOnly(sstable.metadata, dfile, sstable.header, helper, partitionLevelDeletion) |
| : SSTableSimpleIterator.create(sstable.metadata, dfile, sstable.header, helper, partitionLevelDeletion); |
| return new SSTableIdentityIterator(sstable, key, partitionLevelDeletion, dfile.getPath(), iterator); |
| } |
| catch (IOException e) |
| { |
| sstable.markSuspect(); |
| throw new CorruptSSTableException(e, dfile.getPath()); |
| } |
| } |
| |
| public CFMetaData metadata() |
| { |
| return sstable.metadata; |
| } |
| |
| public PartitionColumns columns() |
| { |
| return metadata().partitionColumns(); |
| } |
| |
| public boolean isReverseOrder() |
| { |
| return false; |
| } |
| |
| public DecoratedKey partitionKey() |
| { |
| return key; |
| } |
| |
| public DeletionTime partitionLevelDeletion() |
| { |
| return partitionLevelDeletion; |
| } |
| |
| public Row staticRow() |
| { |
| return staticRow; |
| } |
| |
| public boolean hasNext() |
| { |
| try |
| { |
| return iterator.hasNext(); |
| } |
| catch (IndexOutOfBoundsException e) |
| { |
| sstable.markSuspect(); |
| throw new CorruptSSTableException(e, filename); |
| } |
| catch (IOError e) |
| { |
| if (e.getCause() instanceof IOException) |
| { |
| sstable.markSuspect(); |
| throw new CorruptSSTableException((Exception)e.getCause(), filename); |
| } |
| else |
| { |
| throw e; |
| } |
| } |
| } |
| |
| public Unfiltered next() |
| { |
| try |
| { |
| return doCompute(); |
| } |
| catch (IndexOutOfBoundsException e) |
| { |
| sstable.markSuspect(); |
| throw new CorruptSSTableException(e, filename); |
| } |
| catch (IOError e) |
| { |
| if (e.getCause() instanceof IOException) |
| { |
| sstable.markSuspect(); |
| throw new CorruptSSTableException((Exception)e.getCause(), filename); |
| } |
| else |
| { |
| throw e; |
| } |
| } |
| } |
| |
| protected Unfiltered doCompute() |
| { |
| return iterator.next(); |
| } |
| |
| public void close() |
| { |
| // creator is responsible for closing file when finished |
| } |
| |
| public String getPath() |
| { |
| return filename; |
| } |
| |
| public EncodingStats stats() |
| { |
| // We could return sstable.header.stats(), but this may not be as accurate than the actual sstable stats (see |
| // SerializationHeader.make() for details) so we use the latter instead. |
| return new EncodingStats(sstable.getMinTimestamp(), sstable.getMinLocalDeletionTime(), sstable.getMinTTL()); |
| } |
| |
| public int compareTo(SSTableIdentityIterator o) |
| { |
| return key.compareTo(o.key); |
| } |
| } |