searchutil.java

来自「关于 Jaoso新闻文章发布系统 --- --- --- --- --- -」· Java 代码 · 共 67 行

package jaoso.framework.core.search;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;


/**
 * @author        Quake Wang
 * @since        2004-5-25
 * @version $Revision: 1.1 $
 *
 **/
public class SearchUtil {

    //~ Static fields/initializers =============================================

    /**  DOCUMENT ME! */
    public static final String IDENTIFIER = "identifier";

    //~ Methods ================================================================

    /**
     * DOCUMENT ME!
     *
     * @param entity DOCUMENT ME!
     *
     * @return DOCUMENT ME!
     */
    public static String getIdentifier(Searchable entity) {

        return entity.getClass()
                     .getName() + "-" + entity.getId();
    }

    /**
     * DOCUMENT ME!
     *
     * @param identifiers DOCUMENT ME!
     * @param className DOCUMENT ME!
     *
     * @return DOCUMENT ME!
     */
    public static List toIdList(Collection identifiers, String className) {

        if ((identifiers == null) || (identifiers.size() < 0)) {

            return null;
        }

        List result = new ArrayList();

        for (Iterator iter = identifiers.iterator(); iter.hasNext();) {

            String indentifier = (String) iter.next();

            if (indentifier.startsWith(className)) {

                result.add(indentifier.substring(className.length() + 1));
            }
        }

        return result;
    }
}