org.apache.nutch.host
Class HostDb

java.lang.Object
  org.apache.nutch.host.HostDb

All Implemented Interfaces:

Closeable

public class HostDb
extends Object
implements Closeable

A caching wrapper for the host datastore.

Field Summary

static int	DEFAULT_HOSTDB_CONCURRENCY_LEVEL
static int	DEFAULT_LRU_SIZE
static String	HOSTDB_CONCURRENCY_LEVEL
static String	HOSTDB_LRU_SIZE
static org.apache.commons.logging.Log	LOG

Constructor Summary

HostDb(Configuration conf)

Method Summary

void	close()
Host	get(String key)
Host	getByHostName(String hostName)
void	put(String key, Host host)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.apache.commons.logging.Log LOG

HOSTDB_LRU_SIZE

public static final String HOSTDB_LRU_SIZE

See Also:

Constant Field Values

DEFAULT_LRU_SIZE

public static final int DEFAULT_LRU_SIZE

See Also:

Constant Field Values

HOSTDB_CONCURRENCY_LEVEL

public static final String HOSTDB_CONCURRENCY_LEVEL

See Also:

Constant Field Values

DEFAULT_HOSTDB_CONCURRENCY_LEVEL

public static final int DEFAULT_HOSTDB_CONCURRENCY_LEVEL

See Also:

Constant Field Values

Constructor Detail

HostDb

public HostDb(Configuration conf)
       throws IOException

Throws:

IOException

Method Detail

get

public Host get(String key)
         throws IOException

Throws:

IOException

getByHostName

public Host getByHostName(String hostName)
                   throws IOException

Throws:

IOException

put

public void put(String key,
                Host host)
         throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Throws:

IOException