org.archive.wayback.resourceindex.ziplines

Class LocalFileBlockLoader

java.lang.Object

org.archive.wayback.resourceindex.ziplines.LocalFileBlockLoader

All Implemented Interfaces:

BlockLoader

public class LocalFileBlockLoader
extends Object
implements BlockLoader

Simple block loader which uses RandomAccessFiles to grab ranges of local files.

Author:

brad

Constructor Summary

Constructors

Constructor and Description
LocalFileBlockLoader()

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getBlock(String url, long offset, int length) Fetch a range of bytes from a particular URL.

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalFileBlockLoader

public LocalFileBlockLoader()

Method Detail

getBlock

public byte[] getBlock(String url,
              long offset,
              int length)
                throws IOException

Description copied from interface: BlockLoader

Fetch a range of bytes from a particular URL. Note that the bytes are read into memory all at once, so care should be taken with the length argument.

Specified by:

getBlock in interface BlockLoader

Parameters:

url - String URL to fetch

offset - byte start offset of the desired range

length - number of octets to fetch

Returns:

a new byte[] containing the octets fetched

Throws:

IOException - on Network and protocol failures, as well as Timeouts