Package org.apache.cassandra.io.sstable.format

Interface SSTableFormat.SSTableReaderFactory<R extends SSTableReader,B extends SSTableReader.Builder<R,B>>

Enclosing interface:

SSTableFormat<R extends SSTableReader,W extends SSTableWriter>

public static interface SSTableFormat.SSTableReaderFactory<R extends SSTableReader,B extends SSTableReader.Builder<R,B>>

Method Summary

Modifier and Type	Method	Description
SSTableReader.Builder<R,B>	builder(Descriptor descriptor)	A simple builder which creates an instnace of SSTableReader with the provided parameters.
Class<R>	getReaderClass()
SSTableReaderLoadingBuilder<R,B>	loadingBuilder(Descriptor descriptor, TableMetadataRef tableMetadataRef, Set<Component> components)	A builder which opens/loads all the required resources upon execution of SSTableReaderLoadingBuilder.build(SSTable.Owner, boolean, boolean) and passed them to the created reader instance.
Pair<DecoratedKey,DecoratedKey>	readKeyRange(Descriptor descriptor, IPartitioner partitioner)	Retrieves a key range for the given sstable at the lowest cost - that is, without opening all sstables files if possible.

Method Details

builder

SSTableReader.Builder<R,B> builder(Descriptor descriptor)

A simple builder which creates an instnace of SSTableReader with the provided parameters. It expects that all the required resources to be opened/loaded externally by the caller.

The builder is expected to perform basic validation of the provided parameters.

loadingBuilder

SSTableReaderLoadingBuilder<R,B> loadingBuilder(Descriptor descriptor,
 TableMetadataRef tableMetadataRef,
 Set<Component> components)

A builder which opens/loads all the required resources upon execution of SSTableReaderLoadingBuilder.build(SSTable.Owner, boolean, boolean) and passed them to the created reader instance. If the creation of SSTableReader fails, no resources should be left opened.

The builder is expected to perform basic validation of the provided parameters.

readKeyRange

Pair<DecoratedKey,DecoratedKey> readKeyRange(Descriptor descriptor,
 IPartitioner partitioner)
                                      throws IOException

Retrieves a key range for the given sstable at the lowest cost - that is, without opening all sstables files if possible.

Throws:

IOException

getReaderClass

Class<R> getReaderClass()