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com.strangeberry.rendezvous
Class DNSCache  

java.lang.Object
  com.strangeberry.rendezvous.DNSCache

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class DNSCache

extends java.lang.Object

A table of DNS entries. This is a closed hash table which can handle multiple entries with the same name. It provides iterators to efficiently iterate over all the entries with a given name.

Version:

1.11, 11/29/2002

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Nested Class Summary
private  class	DNSCache.IterateAll           Iterate over all entries.
private  class	DNSCache.IterateKey           Iterate over some entries.

 

Field Summary
(package private)  int	count
(package private)  DNSEntry[]	entries
(package private) static float	LOAD_FACTOR
(package private)  float	loadFactor

 

Constructor Summary
(package private)	DNSCache(int size)           Create a table with a given initial size.

 

Method Summary
(package private)  void	add(DNSEntry entry)           Add an entry to the table.
private  void	add(DNSEntry[] entries, DNSEntry entry)           Add an entry to a table.
(package private)  java.util.Iterator	all()           Iterate over all entries.
(package private)  java.util.Iterator	find(java.lang.String name)           Iterate only over items with matching name.
(package private)  DNSEntry	get(DNSEntry entry)           Get a matching DNS entry from the table (using equals).
(package private)  DNSEntry	get(java.lang.String name, int type, int clazz)           Get a matching DNS entry from the table.
(package private)  void	print()           List all entries for debugging.
private  DNSEntry[]	rehash(DNSEntry[] entries, int size)           Rehash a table.
(package private)  boolean	remove(DNSEntry entry)           Remove a specific entry from the table.
private  void	remove(int i)           Remove entry at a given index.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

LOAD_FACTOR

static final float LOAD_FACTOR

See Also:

Constant Field Values

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entries

DNSEntry[] entries

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count

int count

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loadFactor

float loadFactor

Constructor Detail

DNSCache

DNSCache(int size)

Create a table with a given initial size.

Method Detail

add

void add(DNSEntry entry)

Add an entry to the table. The table will be grown if it is more than 75% full.

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add

private void add(DNSEntry[] entries,
                 DNSEntry entry)

Add an entry to a table.

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rehash

private DNSEntry[] rehash(DNSEntry[] entries,
                          int size)

Rehash a table.

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remove

boolean remove(DNSEntry entry)

Remove a specific entry from the table. Returns true if the entry was found.

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remove

private void remove(int i)

Remove entry at a given index. Reshuffle as needed.

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get

DNSEntry get(DNSEntry entry)

Get a matching DNS entry from the table (using equals). Returns the entry that was found.

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get

DNSEntry get(java.lang.String name,
             int type,
             int clazz)

Get a matching DNS entry from the table.

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all

java.util.Iterator all()

Iterate over all entries.

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find

java.util.Iterator find(java.lang.String name)

Iterate only over items with matching name.

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print

void print()

List all entries for debugging.

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