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    1   /* PersistLoadProcessor.java
    2    *
    3    * Created on Feb 13, 2005
    4    *
    5    * Copyright (C) 2007 Internet Archive.
    6    *
    7    * This file is part of the Heritrix web crawler (crawler.archive.org).
    8    *
    9    * Heritrix is free software; you can redistribute it and/or modify
    10   * it under the terms of the GNU Lesser Public License as published by
    11   * the Free Software Foundation; either version 2.1 of the License, or
    12   * any later version.
    13   *
    14   * Heritrix is distributed in the hope that it will be useful,
    15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    17   * GNU Lesser Public License for more details.
    18   *
    19   * You should have received a copy of the GNU Lesser Public License
    20   * along with Heritrix; if not, write to the Free Software
    21   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    22   */
    23  package org.archive.crawler.processor.recrawl;
    24
    25
    26  import java.util.Iterator;
    27
    28  import org.archive.crawler.datamodel.CrawlURI;
    29
    30  import st.ata.util.AList;
    31
    32  /***
    33   * Store CrawlURI attributes from latest fetch to persistent storage for
    34   * consultation by a later recrawl.
    35   *
    36   * @author gojomo
    37   * @version $Date: 2006-09-25 20:19:54 +0000 (Mon, 25 Sep 2006) $, $Revision: 4654 $
    38   */
    39  public class PersistLoadProcessor extends PersistOnlineProcessor {
    40      private static final long serialVersionUID = -1917169316015093131L;
    41
    42      /***
    43       * Usual constructor
    44       *
    45       * @param name
    46       */
    47      public PersistLoadProcessor(String name) {
    48          super(name, "PersistLoadProcessor. Loads CrawlURI attributes " +
    49                  "from a previous crawl for current consultation.");
    50      }
    51
    52      @Override
    53      protected void innerProcess(CrawlURI curi) throws InterruptedException {
    54          if(shouldLoad(curi)) {
    55              AList prior = (AList) store.get(persistKeyFor(curi));
    56              if(prior!=null) {
    57                  // merge in keys
    58                  Iterator iter = prior.getKeys();
    59                  curi.getAList().copyKeysFrom(iter,prior);
    60              }
    61          }
    62      }
    63  }