01: /* ConfiguredDecideRule
02: *
03: * $Id: ConfiguredDecideRule.java 4649 2006-09-25 17:16:55Z paul_jack $
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: import org.archive.crawler.settings.SimpleType;
28:
29: /**
30: * Rule which can be configured to ACCEPT or REJECT at
31: * operator's option.
32: *
33: * @author gojomo
34: */
35: public class ConfiguredDecideRule extends DecideRule {
36:
37: private static final long serialVersionUID = -7084695808452312555L;
38:
39: public final static String ATTR_DECISION = "decision";
40: public final static String[] ALLOWED_TYPES = new String[] { ACCEPT,
41: REJECT };
42:
43: public ConfiguredDecideRule(String name) {
44: super (name);
45: setDescription("FRAMEWORK: Should not appear as choice");
46: addElementToDefinition(new SimpleType(ATTR_DECISION,
47: "Decision applied if this rule is triggered. "
48: + "Otherwise PASS.", ACCEPT, ALLOWED_TYPES));
49: }
50:
51: public Object decisionFor(Object object) {
52: return singlePossibleNonPassDecision(object);
53: }
54:
55: public Object singlePossibleNonPassDecision(Object object) {
56: Object decision = getUncheckedAttribute(object, ATTR_DECISION);
57: // We're not always getting back from the settings system the
58: // interned versions of ACCEPT and REJECT. Guard against this.
59: Object result = PASS;
60: for (int i = 0; i < ALLOWED_TYPES.length; i++) {
61: if (ALLOWED_TYPES[i] == decision
62: || ALLOWED_TYPES[i].equals(decision)) {
63: result = ALLOWED_TYPES[i];
64: break;
65: }
66: }
67: return result;
68: }
69: }
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