org.bouncycastle.util.CollectionStore.java Source code

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Here is the source code for org.bouncycastle.util.CollectionStore.java

Source

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()) {
                Object obj = iter.next();

                if (selector.match(obj)) {
                    col.add(obj);
                }
            }

            return col;
        }
    }

    /**
     * Support method for Iterable where available.
     */
    public Iterator iterator() {
        return getMatches(null).iterator();
    }
}