Package org.apache.jackrabbit.oak.segment.file.tar.index

Class IndexLoader

java.lang.Object

org.apache.jackrabbit.oak.segment.file.tar.index.IndexLoader

public class IndexLoader
extends Object

Load and validate the index of a TAR file.

Method Summary

Modifier and Type	Method	Description
Index	loadIndex(ReaderAtEnd reader)	Load and validate the index.
static IndexLoader	newIndexLoader(int blockSize)	Create a new IndexLoader for the specified block size.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

newIndexLoader

public static IndexLoader newIndexLoader(int blockSize)

Create a new IndexLoader for the specified block size. The block size is used to validate different data items in the index.

Parameters:

blockSize - The block size. It must be strictly positive.

Returns:

An instance of IndexLoader.

loadIndex

public Index loadIndex(ReaderAtEnd reader)
                throws IOException,
                       InvalidIndexException

Load and validate the index. The index is loaded by looking backwards at a TAR file. This method relies on an instance of ReaderAtEnd which is positioned at the end of the index in the TAR file.

Parameters:

reader - an instance of ReaderAtEnd.

Returns:

An instance of Index.

Throws:

IOException - If an I/O error occurs while reading the index.

InvalidIndexException - If a validation error occurs while checking the index.