01: /* AcceptRule
02: *
03: * $Id: PredicatedDecideRule.java 4914 2007-02-18 21:53:01Z gojomo $
04: *
05: * Created on Mar 3, 2005
06: *
07: * Copyright (C) 2005 Internet Archive.
08: *
09: * This file is part of the Heritrix web crawler (crawler.archive.org).
10: *
11: * Heritrix is free software; you can redistribute it and/or modify
12: * it under the terms of the GNU Lesser Public License as published by
13: * the Free Software Foundation; either version 2.1 of the License, or
14: * any later version.
15: *
16: * Heritrix is distributed in the hope that it will be useful,
17: * but WITHOUT ANY WARRANTY; without even the implied warranty of
18: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: * GNU Lesser Public License for more details.
20: *
21: * You should have received a copy of the GNU Lesser Public License
22: * along with Heritrix; if not, write to the Free Software
23: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: */
25: package org.archive.crawler.deciderules;
26:
27: /**
28: * Rule which applies the configured decision only if a
29: * test evaluates to true. Subclasses override evaluate()
30: * to establish the test.
31: *
32: * @author gojomo
33: */
34: public abstract class PredicatedDecideRule extends ConfiguredDecideRule {
35: public PredicatedDecideRule(String name) {
36: super (name);
37: setDescription("ABSTRACT: Should not appear as choice.");
38: }
39:
40: public Object decisionFor(Object object) {
41: if (evaluate(object)) {
42: return super .decisionFor(object);
43: }
44: return PASS;
45: }
46:
47: protected abstract boolean evaluate(Object object);
48: }
|