yacy_search_server/source/de/anomic/tools/disorderSet.java

// disorderSet.java 
// -----------------------
// (C) by Michael Peter Christen; mc@anomic.de
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004
// last major change: 17.05.2004
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 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
//
// Using this software in any meaning (reading, learning, copying, compiling,
// running) means that you agree that the Author(s) is (are) not responsible
// for cost, loss of data or any harm that may be caused directly or indirectly
// by usage of this softare or this documentation. The usage of this software
// is on your own risk. The installation and usage (starting/running) of this
// software may allow other people or application to access your computer and
// any attached devices and is highly dependent on the configuration of the
// software which must be done by the user of the software; the author(s) is
// (are) also not responsible for proper configuration and usage of the
// software, even if provoked by documentation provided together with
// the software.
//
// Any changes to this file according to the GPL as documented in the file
// gpl.txt aside this file in the shipment you received can be done to the
// lines that follows this copyright notice here, but changes must not be
// done inside the copyright notive above. A re-distribution must contain
// the intact and unchanged copyright notice.
// Contributions and changes to the program code must be marked as such.

package de.anomic.tools;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

public class disorderSet extends HashSet<String> implements Set<String> {

    private static final long serialVersionUID = 1L;
    disorderHeap dh;

    public disorderSet() {
        super();
        dh = null;
    }

    public boolean hasAny() {
        return (this.size() > 0);
    }

    public String any() {
        // return just any element
        if ((dh == null) || (dh.size() == 0)) {
            if (this.size() == 0) return null;
            // fill up the queue
            dh = new disorderHeap();
            Iterator<String> elements = this.iterator();
            while (elements.hasNext()) dh.add(elements.next());
        }
        return dh.remove();
    }

    public static void main(String[] args) {
        disorderSet ds = new disorderSet();
        for (int i = 0; i < args.length; i++) ds.add(args[i]);
        for (int i = 0; i < args.length * 3; i++) System.out.print((String) ds.any() + " ");
        System.out.println();
    }

}