org.geotools.util
Class CheckedHashSet

java.lang.Object
  java.util.AbstractCollection
      java.util.AbstractSet
          java.util.HashSet
              java.util.LinkedHashSet
                  org.geotools.util.CheckedHashSet

All Implemented Interfaces:

java.lang.Cloneable, org.opengis.util.Cloneable, java.util.Collection, java.io.Serializable, java.util.Set

public class CheckedHashSet

extends java.util.LinkedHashSet

implements org.opengis.util.Cloneable

Acts as a typed Set while we wait for Java 5.0.

Since:

2.1

Version:

$Id: CheckedHashSet.java 17672 2006-01-19 00:25:55Z desruisseaux $

Author:

Jody Garnett (Refractions Research), Martin Desruisseaux

See Also:

Serialized Form

To Do:

Provides synchronization facility on arbitrary lock, for use with the metadata package. The lock would be the metadata that owns this collection. Be carefull to update the lock after a clone (this work may be done in ).

Constructor Summary

CheckedHashSet(java.lang.Class type)
Constructs a set of the specified type.

Method Summary

boolean	add(java.lang.Object element) Adds the specified element to this set if it is not already present.
protected void	ensureValidType(java.lang.Object element) Checks the type of the specified object.

Methods inherited from class java.util.HashSet

clear, clone, contains, isEmpty, iterator, remove, size

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.opengis.util.Cloneable

clone

Methods inherited from interface java.util.Set

addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray

Constructor Detail

CheckedHashSet

public CheckedHashSet(java.lang.Class type)

Constructs a set of the specified type.

Parameters:

type - The element type (should not be null).

Method Detail

ensureValidType

protected void ensureValidType(java.lang.Object element)
                        throws java.lang.IllegalArgumentException

Checks the type of the specified object. The default implementation ensure that the object is assignable to the type specified at construction time.

Parameters:

element - the object to check, or .

Throws:

java.lang.IllegalArgumentException - if the specified element is not of the expected type.

add

public boolean add(java.lang.Object element)

Adds the specified element to this set if it is not already present.

Specified by:

add in interface java.util.Set

Parameters:

element - element to be added to this set.

Returns:

if the set did not already contain the specified element.

Throws:

java.lang.IllegalArgumentException - if the specified element is not of the expected type.