com.google.bitcoin.utils
Class BlockFileLoader

java.lang.Object
  com.google.bitcoin.utils.BlockFileLoader

All Implemented Interfaces:

Iterable<Block>, Iterator<Block>

public class BlockFileLoader
extends Object
implements Iterable<Block>, Iterator<Block>

This class reads block files stored in the reference/Satoshi client format. This is simply a way to concatenate blocks together. Importing block data with this tool can be a lot faster than syncing over the network, if you have the files available.

In order to comply with Iterator<Block>, this class swallows a lot of IOExceptions, which may result in a few blocks being missed followed by a huge set of orphan blocks.

To blindly import all files which can be found in a reference client (version >= 0.8) datadir automatically, try this code fragment:
BlockFileLoader loader = new BlockFileLoader(BlockFileLoader.getReferenceClientBlockFileList());
for (Block block : loader) {
try { chain.add(block); } catch (Exception e) { }
}

Constructor Summary

BlockFileLoader(NetworkParameters params, List<File> files)

Method Summary

static List<File>	getReferenceClientBlockFileList() Gets the list of files which contain blocks from the Satoshi client.
boolean	hasNext()
Iterator<Block>	iterator()
Block	next()
void	remove()

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockFileLoader

public BlockFileLoader(NetworkParameters params,
                       List<File> files)

Method Detail

getReferenceClientBlockFileList

public static List<File> getReferenceClientBlockFileList()

Gets the list of files which contain blocks from the Satoshi client.

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<Block>

next

public Block next()
           throws NoSuchElementException

Specified by:

next in interface Iterator<Block>

Throws:

NoSuchElementException

remove

public void remove()
            throws UnsupportedOperationException

Specified by:

remove in interface Iterator<Block>

Throws:

UnsupportedOperationException

iterator

public Iterator<Block> iterator()

Specified by:

iterator in interface Iterable<Block>