net.sf.saxon.expr.sort

Class CustomMap<K,V>

java.lang.Object

net.sf.saxon.expr.sort.CustomMap<K,V>

public class CustomMap<K,V>
extends java.lang.Object

A map implementation using a custom equality matcher, to avoid having to wrap each entry in a wrapper object to achieve customised equality testing.

Note: this doesn't implement Map<K, V> to save the effort of implementing methods like size() and iterator() that aren't required for our use cases. These methods could easily be added without changing the basic design.

Constructor Summary

Constructors

Constructor and Description
CustomMap(EqualityMatcher<K> matcher)

Method Summary

Modifier and Type	Method and Description
boolean	containsKey(K key) Ask if a key exists in the set of keys
V	get(K key) Get the value associated with a given key, or null if absemt
java.util.List<K>	keys() List all the keys.
V	put(K key, V value) Add an entry to the map
java.util.List<V>	values() List all the values.

Methods inherited from class java.lang.Object

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

Constructor Detail

CustomMap

public CustomMap(EqualityMatcher<K> matcher)

Method Detail

put

public V put(K key,
             V value)

Add an entry to the map

Parameters:

key - the new key

value - the value to be added.

Returns:

the previous value for the key if there was one, or null otherwise

get

public V get(K key)

Get the value associated with a given key, or null if absemt

Parameters:

key - the new key

Returns:

the value for the key if there is one, or null otherwise

containsKey

public boolean containsKey(K key)

Ask if a key exists in the set of keys

Parameters:

key - the requested key

Returns:

true if it exists

keys

public java.util.List<K> keys()

List all the keys.

Returns:

a list of all the keys

values

public java.util.List<V> values()

List all the values.

Returns:

a list of all the values