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Java Source Code / Java Documentation » GIS » GeoTools 2.4.1 » org.geotools.util

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Class Diagram

Java Document (Java Doc)

java.util .AbstractSet

org.geotools.util .DisjointSet

DisjointSet
public class DisjointSet extends AbstractSet implements Serializable(Code)
	A set which is disjoint from others DisjointSet s. Two sets are disjoint (or mutually exclusive DisjointSet set0 = new DisjointSet(true); // Used as the trash set. DisjointSet set1 = new DisjointSet(set0); DisjointSet set2 = new DisjointSet(set0); Disjoint sets are thread-safe. since: 2.0 version: $Id: DisjointSet.java 22482 2006-10-31 02:58:00Z desruisseaux $ author: Martin Desruisseaux

Constructor Summary
public	DisjointSet() Construct a initially empty set.
public	DisjointSet(boolean hasTrash) Construct a initially empty set with an optional trash set.
public	DisjointSet(DisjointSet disjointSet) Construct a new set mutually exclusive with the specified set.

Method Summary
public boolean	add(Object element) Ensures that this collection contains the specified element. Adding an element to this set will remove it from any mutually exclusive set. Parameters: element - Element whose presence in this set is to be ensured.
public boolean	addAll(Collection c) Adds all of the elements in the specified collection to this set. All of the elements will be removed from mutually exclusive sets. Parameters: c - collection whose elements are to be added to this set.
public void	clear() Removes all of the elements from this set.
public boolean	contains(Object element) Returns true if this set contains the specified element. Parameters: element - Object to be checked for containment in this set.
public boolean	containsAll(Collection c) Returns true if this set contains all of the elements in the specified collection. Parameters: c - collection to be checked for containment in this collection.
public boolean	equals(Object set) Compare this set with the specified object for equality.
public Set	getTrash() Returns the trash set, or null if there is none.
public int	hashCode() Returns an hash value for this set.
public Iterator	iterator() Returns an iterator over the elements in this collection.
public boolean	remove(Object element) Removes a single instance of the specified element from this set, if it is present.
public boolean	removeAll(Collection c) Removes from this set all of its elements that are contained in the specified collection.
public boolean	retainAll(Collection c) Retains only the elements in this set that are contained in the specified collection.
public int	size() Returns the number of elements in this set.
public Object[]	toArray() Returns an array containing all of the elements in this collection.
public Object[]	toArray(Object[] a) Returns an array containing all of the elements in this collection. Parameters: a - The array into which the elements of the set are to bestored, if it is big enough; otherwise, a new array ofthe same runtime type is allocated for this purpose.
public String	toString() Returns a string representation of this set.

Constructor Detail

DisjointSet
public DisjointSet()(Code)
	Construct a initially empty set. There is initially no other set mutually exclusive with this one. Mutually exclusive sets must be created using the DisjointSet(DisjointSet) constructor with this newly created set as argument. DisjointSet s constructed using this constructor has no trash. All remove operations on this set really remove all references to the removed element, like a usual Set . This is opposed to moving the element to a "trash" set, which is allowed by the DisjointSet(true) constructor.

DisjointSet
public DisjointSet(boolean hasTrash)(Code)
	Construct a initially empty set with an optional trash set. There is initially no other set mutually exclusive with this one. Mutually exclusive sets must be created using the DisjointSet(DisjointSet) constructor with this newly created set as argument. Parameters: hasTrash - If true , all operationswill add removed elements to a trash set (thus, really just moving theelement to the trash). If false , there is no trash and thisconstructor behave like the no-argument constructor. See Also: DisjointSet.getTrash

DisjointSet
public DisjointSet(DisjointSet disjointSet)(Code)
	Construct a new set mutually exclusive with the specified set. All sets mutually exclusive with disjointSet will also be mutually exclusive with the newly created set. If disjointSet has a trash set, the newly created set will use the same trash (i.e. all remove operations will really move the element to the trash set). Otherwise, the new DisjointSet have no trash. Parameters: disjointSet - The set to be disjoint from.

Method Detail

add
public boolean add(Object element)(Code)
	Ensures that this collection contains the specified element. Adding an element to this set will remove it from any mutually exclusive set. Parameters: element - Element whose presence in this set is to be ensured. true if the set changed as a result of the call.

addAll
public boolean addAll(Collection c)(Code)
	Adds all of the elements in the specified collection to this set. All of the elements will be removed from mutually exclusive sets. Parameters: c - collection whose elements are to be added to this set. true if this set changed as a result of the call.

clear
public void clear()(Code)
	Removes all of the elements from this set. If this DisjointSet has a trash set, all removed elements will be added to the trash set.

contains
public boolean contains(Object element)(Code)
	Returns true if this set contains the specified element. Parameters: element - Object to be checked for containment in this set. true if this set contains the specified element.

containsAll
public boolean containsAll(Collection c)(Code)
	Returns true if this set contains all of the elements in the specified collection. Parameters: c - collection to be checked for containment in this collection. true if this set contains all of the elements inthe specified collection.

equals
public boolean equals(Object set)(Code)
	Compare this set with the specified object for equality.

getTrash
public Set getTrash()(Code)
	Returns the trash set, or null if there is none. The trash set receive all elements removed from this set.

hashCode
public int hashCode()(Code)
	Returns an hash value for this set.

iterator
public Iterator iterator()(Code)
	Returns an iterator over the elements in this collection.

remove
public boolean remove(Object element)(Code)
	Removes a single instance of the specified element from this set, if it is present. If this DisjointSet has a trash set, the removed element will be added to the trash set. Parameters: element - Element to be removed from this set. true if the set changed as a result of the call.

removeAll
public boolean removeAll(Collection c)(Code)
	Removes from this set all of its elements that are contained in the specified collection. If this DisjointSet has a trash set, all removed elements will be added to the trash set. Parameters: c - elements to be removed from this set. true if this set changed as a result of the call.

retainAll
public boolean retainAll(Collection c)(Code)
	Retains only the elements in this set that are contained in the specified collection. If this DisjointSet has a trash set, all removed elements will be added to the trash set. Parameters: c - elements to be retained in this collection. true if this collection changed as a result of the call.

size
public int size()(Code)
	Returns the number of elements in this set. The size of this set may change as a result of adding elements to a mutually exclusive set.

toArray
public Object[] toArray()(Code)
	Returns an array containing all of the elements in this collection. an array containing all of the elements in this set.

toArray
public Object[] toArray(Object[] a)(Code)
	Returns an array containing all of the elements in this collection. Parameters: a - The array into which the elements of the set are to bestored, if it is big enough; otherwise, a new array ofthe same runtime type is allocated for this purpose. an array containing the elements of the set.

toString
public String toString()(Code)
	Returns a string representation of this set.

Methods inherited from java.util.AbstractSet

public boolean equals(Object o)(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
public boolean removeAll(Collection c)(Code)(Java Doc)

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