source: trunk/gli/src/org/greenstone/gatherer/cdm/SubIndex.java@ 4580

/**
 *#########################################################################
 *
 * A component of the Gatherer application, part of the Greenstone digital
 * library suite from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * <BR><BR>
 *
 * Author: John Thompson, Greenstone Digital Library, University of Waikato
 *
 * <BR><BR>
 *
 * Copyright (C) 1999 New Zealand Digital Library Project
 *
 * <BR><BR>
 *
 * 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.
 *
 * <BR><BR>
 *
 * 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.
 *
 * <BR><BR>
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *########################################################################
 */

 




package org.greenstone.gatherer.cdm;
/**************************************************************************************
 * Title:        Gatherer
 * Description:  The Gatherer: a tool for gathering and enriching a digital collection.
 * Copyright:    Copyright (c) 2001
 * Company:      The University of Waikato
 * Written:      03/05/02
 * Revised:      17/11/02 - Commented
 **************************************************************************************/
import java.util.Collections;
import java.util.StringTokenizer;
import java.util.Vector;
import org.greenstone.gatherer.cdm.Subcollection;
import org.greenstone.gatherer.cdm.SubcollectionManager;
/** The <strong>SubIndex</strong> class is essentially a <strong>Vector</strong> with some extra added magic to make it print out properly.
* @author John Thompson, Greenstone Digital Library, University of Waikato
* @version 2.1
*/
public class SubIndex
    extends Vector
    implements Comparable {
    /** Default Constructor.
     */
    public SubIndex() {
    super();
    }
    /** Copy Constructor.
      * @param original The <strong>Vector</strong> used to initially fill the SubIndex.
      */
    public SubIndex(Vector original) {
    super(original);
    }
    /** Parsed data Constructor.
      * @param raw A <strong>String</strong> containing a comma separated list of subcollection names.
      * @param manager A reference to the <strong>SubcollectionManager</strong> via which we retrieve the required Subcollections.
      */
    public SubIndex(String raw, SubcollectionManager manager) {
    super();
    StringTokenizer tokenizer = new StringTokenizer(raw, ",");
    while(tokenizer.hasMoreTokens()) {
        String name = tokenizer.nextToken();
        Subcollection sub = manager.getSubcollection(name);
        if(sub != null) {
        add(sub);
        }
    }
    }
    /** Method to compare two subindexes.
      * @param object The other subindex to compare to, as an <strong>Object</strong>.
      * @return An <i>int</i> which is greater than, equal to or less than zero if the this object is before, equal to, or after the target object respectively.
      */
    public int compareTo(Object object) {
    return toString().compareTo(object.toString());
    }
    /** Method to determine if this subindex contains a certain subcollection.
      * @param name The name, as a <strong>String</strong>, of the subcollection you are checking for.
      * @return A <i>boolean</i> which is <i>true</i> if this index contains the named subcollection, <i>false</i> otherwise.
      */
    public boolean containsSubcollection(String name) {
    for(int i = 0; i < size(); i++) {
        Subcollection sub = (Subcollection) get(i);
        if(sub.getName().equals(name)) {
        return true;
        }
    }
    return false;
    }
    /** Method to check two subindexes for equality.
      * @param object The other subindex to compare to, as an <strong>Object</strong>.
      * @return A <i>boolean</i> which is <i>true</i> if the subindexes are equal, <i>false</i> otherwise.
      */
    public boolean equals(Object object) {
    return (compareTo(object) == 0);
    }
    /** Method to generate a comma separated list from a subindex vector.
      * @return A <strong>String</strong> representing this subindex.
      */
    public String toString() {
    StringBuffer text = new StringBuffer("");
    for(int i = 0; i < size(); i++) {
        Object object = get(i);
        Subcollection sub = (Subcollection) get(i);
        text.append(sub.getName());
        if(i < size() - 1) {
        text.append(",");
        }
    }
    return text.toString();
    }
}