net.sf.saxon.expr.sort

Class CustomSet<T>

java.lang.Object

net.sf.saxon.expr.sort.CustomSet<T>

Type Parameters:

T - The type of the entries in the set

public class CustomSet<T>
extends java.lang.Object

A mutable set 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 java.util.Set<T>. This is 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
CustomSet(EqualityMatcher<T> matcher) Create an empty set using the supplied equality matcher

Method Summary

Modifier and Type	Method and Description
boolean	add(T value) Add a value to the set
boolean	contains(T value) Ask if a value exists in the set

Methods inherited from class java.lang.Object

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

Constructor Detail

CustomSet

public CustomSet(EqualityMatcher<T> matcher)

Create an empty set using the supplied equality matcher

Parameters:

matcher - the function used to compare items for equality

Method Detail

add

public boolean add(T value)

Add a value to the set

Parameters:

value - the value to be added.

Returns:

true if the value is newly added, that is, if it was not already present

contains

public boolean contains(T value)

Ask if a value exists in the set

Parameters:

value - the requested value

Returns:

true if it exists