org.antlr.v4.runtime.misc

Class DoubleKeyMap<Key1,Key2,Value>

java.lang.Object

org.antlr.v4.runtime.misc.DoubleKeyMap<Key1,Key2,Value>

public class DoubleKeyMap<Key1,Key2,Value>
extends Object

Sometimes we need to map a key to a value but key is two pieces of data. This nested hash table saves creating a single key each time we access map; avoids mem creation.

Constructor Summary

Constructors

Constructor and Description
DoubleKeyMap()

Method Summary

Methods

Modifier and Type	Method and Description
Map<Key2,Value>	get(Key1 k1)
Value	get(Key1 k1, Key2 k2)
Set<Key1>	keySet() get all primary keys
Set<Key2>	keySet(Key1 k1) get all secondary keys associated with a primary key
Value	put(Key1 k1, Key2 k2, Value v)
Collection<Value>	values(Key1 k1) Get all values associated with primary key

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleKeyMap

public DoubleKeyMap()

Method Detail

put

public Value put(Key1 k1,
        Key2 k2,
        Value v)

get

public Value get(Key1 k1,
        Key2 k2)

get

public Map<Key2,Value> get(Key1 k1)

values

public Collection<Value> values(Key1 k1)

Get all values associated with primary key

keySet

public Set<Key1> keySet()

get all primary keys

keySet

public Set<Key2> keySet(Key1 k1)

get all secondary keys associated with a primary key