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/*
* Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
package javax.media.j3d;
import java.util.AbstractMap;
import java.util.AbstractSet;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Set;
/**
* Properties object for query operations. It is a read-only Map backed
* up by a Hashtable.
*/
class J3dQueryProps extends AbstractMap {
private Hashtable table;
private Set entrySet = null;
/**
* Constructs a new J3dQueryProps object using the specified
* array of keys and the specified values. The arrays must be
* the same size.
*/
J3dQueryProps(ArrayList<String> keys, ArrayList<Object> values) {
table = new Hashtable();
for (int i = 0; i < keys.size(); i++) {
table.put(keys.get(i), values.get(i));
}
}
/**
* Gets value corresponding to specified key
*/
@Override
public Object get(Object key) {
return table.get(key);
}
/**
* Returns true if the specified key is contained in this Map
*/
@Override
public boolean containsKey(Object key) {
return table.containsKey(key);
}
/**
* Returns true if the specified value is contained in this Map
*/
@Override
public boolean containsValue(Object value) {
return table.containsValue(value);
}
/**
* Returns a new Set object for the entries of this map
*/
@Override
public Set entrySet() {
if (entrySet == null)
entrySet = new EntrySet();
return entrySet;
}
/**
* Entry set class
*/
private class EntrySet extends AbstractSet {
private EntrySet() {
}
@Override
public int size() {
return table.size();
}
@Override
public Iterator iterator() {
return new MapIterator();
}
}
/**
* Entry set class
*/
private class MapIterator implements Iterator {
private Iterator i;
private MapIterator() {
i = table.entrySet().iterator();
}
@Override
public boolean hasNext() {
return i.hasNext();
}
@Override
public Object next() {
return i.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
}
}
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