org.bouncycastle.util.CollectionStore Maven / Gradle / Ivy
package org.bouncycastle.util;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
/**
* A simple collection backed store.
*/
public class CollectionStore
implements Store, Iterable
{
private Collection _local;
/**
* Basic constructor.
*
* @param collection - initial contents for the store, this is copied.
*/
public CollectionStore(
Collection collection)
{
_local = new ArrayList(collection);
}
/**
* Return the matches in the collection for the passed in selector.
*
* @param selector the selector to match against.
* @return a possibly empty collection of matching objects.
*/
public Collection getMatches(Selector selector)
{
if (selector == null)
{
return new ArrayList(_local);
}
else
{
List col = new ArrayList();
Iterator iter = _local.iterator();
while (iter.hasNext())
{
T obj = iter.next();
if (selector.match(obj))
{
col.add(obj);
}
}
return col;
}
}
public Iterator iterator()
{
return getMatches(null).iterator();
}
}