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File org.dgpf.search.api.utils.SearchFactory.java

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 * Copyright (c) 2006 Thomas Weise
 * E-Mail           : tweise@gmx.de
 * Creation Date    : 2006-06-15 15:34:02
 * Original Filename: org.dgpf.search.api.utils.SearchFactory.java
 * Version          : 1.0.0
 * Last modification: 2006-06-15
 *                by: Thomas Weise
 *                    Version 2.1, February 1999
 *                    You should have received a copy of this license along
 *                    with this library; if not, write to the Free Software
 *                    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *                    MA 02111-1307, USA or download the license under
 *                    http://www.gnu.org/copyleft/lesser.html.
 * Warranty         : This software is provided "as is" without any
 *                    warranty; without even the implied warranty of
 *                    merchantability or fitness for a particular purpose.
 *                    See the Gnu Lesser General Public License for more
 *                    details.

package org.dgpf.search.api.utils;

import org.dgpf.search.api.SearchEngine;
import org.sfc.code.CodeSession;

 * This class allows us to create searches with predefined parameter
 * settings, ready to run.
 * @author Thomas Weise

public abstract class SearchFactory
 * This is the default place where you can find the search factory class in
 * a search jar archive.

  public  static  final String  DEFAULT_FACTORY_CLASS = "startup.Factory";
 * Create a new search. This search comes with predefined settings,
 * parameters and definitions. It has not yet been started, therefore use
 * the search's <code>start</code>-routine.
 * @return  The new predefined search.
 * @see SearchEngine#start()

  public  abstract  SearchEngine<?>   create();
 * Instantiate a search factory by using a code session which must contain
 * the class needed.
 * @param p_session The code session containing the class.
 * @return  The new search factory. You can reuse this instance to create
 *          many searches. If no search factory is contained in the
 *          code session according to the conventions, <code>null</code>
 *          is returned.

  public static final SearchFactory instantiate(final CodeSession p_session)
    Object l_o;
    l_o = p_session.instantiate(DEFAULT_FACTORY_CLASS, null);
    if(l_o instanceof SearchFactory) return ((SearchFactory)(l_o));
    return null;
 * Instantiate a search directly by using a code session which must contain
 * the class needed.
 * @param p_session The code session containing the search factory.
 * @return  The new search engine, ready to be started. 
 *          If no search factory is contained in the
 *          code session according to the conventions, <code>null</code>
 *          is returned.

  public static final SearchEngine<?> create_search(final CodeSession p_session)
    SearchFactory l_f;
    l_f = instantiate(p_session);
    if(l_f != null) return l_f.create();
    return null;

File Information:

file name:SearchFactory.java
qualified name:org.dgpf.search.api.utils.SearchFactory.java
file type:Java Source File
download location:download http://dgpf.sourceforge.net/source/org/dgpf/search/api/utils/SearchFactory.java
size:3.161 KB (3237 B)
uploaded: 2018-01-07 12:03:35 GMT+0000
last update: 2006-06-16 04:21:07 GMT+0000
last access: 2018-05-21 02:47:33 GMT+0000

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