redis.clients.util

Class Sharded<R,S extends ShardInfo<R>>

java.lang.Object

redis.clients.util.Sharded<R,S>

Direct Known Subclasses:

BinaryShardedJedis

public class Sharded<R,S extends ShardInfo<R>>
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
private Hashing	algo
static java.util.regex.Pattern	DEFAULT_KEY_TAG_PATTERN
static int	DEFAULT_WEIGHT
private java.util.TreeMap<java.lang.Long,S>	nodes
private java.util.Map<ShardInfo<R>,R>	resources
private java.util.regex.Pattern	tagPattern The default pattern used for extracting a key tag.

Constructor Summary

Constructors

Constructor and Description
Sharded(java.util.List<S> shards)
Sharded(java.util.List<S> shards, Hashing algo)
Sharded(java.util.List<S> shards, Hashing algo, java.util.regex.Pattern tagPattern)
Sharded(java.util.List<S> shards, java.util.regex.Pattern tagPattern)

Method Summary

Modifier and Type	Method and Description
java.util.Collection<S>	getAllShardInfo()
java.util.Collection<R>	getAllShards()
java.lang.String	getKeyTag(java.lang.String key) A key tag is a special pattern inside a key that, if preset, is the only part of the key hashed in order to select the server for this key.
R	getShard(byte[] key)
R	getShard(java.lang.String key)
S	getShardInfo(byte[] key)
S	getShardInfo(java.lang.String key)
private void	initialize(java.util.List<S> shards)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_WEIGHT

public static final int DEFAULT_WEIGHT

See Also:

Constant Field Values

nodes

private java.util.TreeMap<java.lang.Long,S extends ShardInfo<R>> nodes

algo

private final Hashing algo

resources

private final java.util.Map<ShardInfo<R>,R> resources

tagPattern

private java.util.regex.Pattern tagPattern

The default pattern used for extracting a key tag. The pattern must have a group (between parenthesis), which delimits the tag to be hashed. A null pattern avoids applying the regular expression for each lookup, improving performance a little bit is key tags aren't being used.

DEFAULT_KEY_TAG_PATTERN

public static final java.util.regex.Pattern DEFAULT_KEY_TAG_PATTERN

Constructor Detail

Sharded

public Sharded(java.util.List<S> shards)

Sharded

public Sharded(java.util.List<S> shards,
               Hashing algo)

Sharded

public Sharded(java.util.List<S> shards,
               java.util.regex.Pattern tagPattern)

Sharded

public Sharded(java.util.List<S> shards,
               Hashing algo,
               java.util.regex.Pattern tagPattern)

Method Detail

initialize

private void initialize(java.util.List<S> shards)

getShard

public R getShard(byte[] key)

getShard

public R getShard(java.lang.String key)

getShardInfo

public S getShardInfo(byte[] key)

getShardInfo

public S getShardInfo(java.lang.String key)

getKeyTag

public java.lang.String getKeyTag(java.lang.String key)

A key tag is a special pattern inside a key that, if preset, is the only part of the key hashed in order to select the server for this key.

Parameters:

key -

Returns:

The tag if it exists, or the original key

See Also:

'm_using_some_form_of_key_hashing_for_partitioning,_but_wh

getAllShardInfo

public java.util.Collection<S> getAllShardInfo()

getAllShards

public java.util.Collection<R> getAllShards()