gnu.trove.decorator.TIntSetDecorator Maven / Gradle / Ivy
///////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2002, Eric D. Friedman All Rights Reserved.
// Copyright (c) 2009, Robert D. Eden All Rights Reserved.
// Copyright (c) 2009, Jeff Randall All Rights Reserved.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
///////////////////////////////////////////////////////////////////////////////
package gnu.trove.decorator;
import gnu.trove.set.TIntSet;
import gnu.trove.iterator.TIntIterator;
import java.io.*;
import java.util.AbstractSet;
import java.util.Iterator;
import java.util.Set;
//////////////////////////////////////////////////
// THIS IS A GENERATED CLASS. DO NOT HAND EDIT! //
//////////////////////////////////////////////////
/**
* Wrapper class to make a TIntSet conform to the java.util.Set API.
* This class simply decorates an underlying TIntSet and translates the Object-based
* APIs into their Trove primitive analogs.
*
*
* Note that wrapping and unwrapping primitive values is extremely inefficient. If
* possible, users of this class should override the appropriate methods in this class
* and use a table of canonical values.
*
*
* Created: Tue Sep 24 22:08:17 PDT 2002
*
* @author Eric D. Friedman
* @author Robert D. Eden
* @author Jeff Randall
*/
public class TIntSetDecorator extends AbstractSet
implements Set, Externalizable {
static final long serialVersionUID = 1L;
/** the wrapped primitive set */
protected TIntSet _set;
/**
* FOR EXTERNALIZATION ONLY!!
*/
public TIntSetDecorator() {}
/**
* Creates a wrapper that decorates the specified primitive set.
*
* @param set the TIntSet to wrap.
*/
public TIntSetDecorator( TIntSet set ) {
super();
this._set = set;
}
/**
* Returns a reference to the set wrapped by this decorator.
*
* @return the wrapped TIntSet instance.
*/
public TIntSet getSet() {
return _set;
}
/**
* Inserts a value into the set.
*
* @param value true if the set was modified by the insertion
*/
public boolean add( Integer value ) {
return value != null && _set.add( value.intValue() );
}
/**
* Compares this set with another set for equality of their stored
* entries.
*
* @param other an Object value
* @return true if the sets are identical
*/
public boolean equals( Object other ) {
if ( _set.equals( other ) ) {
return true; // comparing two trove sets
} else if ( other instanceof Set ) {
Set that = ( Set ) other;
if ( that.size() != _set.size() ) {
return false; // different sizes, no need to compare
} else { // now we have to do it the hard way
Iterator it = that.iterator();
for ( int i = that.size(); i-- > 0; ) {
Object val = it.next();
if ( val instanceof Integer ) {
int v = ( ( Integer ) val ).intValue();
if ( _set.contains( v ) ) {
// match, ok to continue
} else {
return false; // no match: we're done
}
} else {
return false; // different type in other set
}
}
return true; // all entries match
}
} else {
return false;
}
}
/**
* Empties the set.
*/
public void clear() {
this._set.clear();
}
/**
* Deletes a value from the set.
*
* @param value an Object value
* @return true if the set was modified
*/
public boolean remove( Object value ) {
return value instanceof Integer && _set.remove( ( ( Integer ) value ).intValue() );
}
/**
* Creates an iterator over the values of the set.
*
* @return an iterator with support for removals in the underlying set
*/
public Iterator iterator() {
return new Iterator() {
private final TIntIterator it = _set.iterator();
public Integer next() {
return Integer.valueOf( it.next() );
}
public boolean hasNext() {
return it.hasNext();
}
public void remove() {
it.remove();
}
};
}
/**
* Returns the number of entries in the set.
*
* @return the set's size.
*/
public int size() {
return this._set.size();
}
/**
* Indicates whether set has any entries.
*
* @return true if the set is empty
*/
public boolean isEmpty() {
return this._set.size() == 0;
}
/**
* {@inheritDoc}
*/
@Override
public boolean contains( Object o ) {
if ( ! ( o instanceof Integer ) ) return false;
return _set.contains( ( ( Integer ) o ).intValue() );
}
// Implements Externalizable
public void readExternal( ObjectInput in )
throws IOException, ClassNotFoundException {
// VERSION
in.readByte();
// SET
_set = ( TIntSet ) in.readObject();
}
// Implements Externalizable
public void writeExternal( ObjectOutput out ) throws IOException {
// VERSION
out.writeByte( 0 );
// SET
out.writeObject( _set );
}
} // TIntHashSetDecorator