01: /*
02: * Copyright (c) 2004 JETA Software, Inc. All rights reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without modification,
05: * are permitted provided that the following conditions are met:
06: *
07: * o Redistributions of source code must retain the above copyright notice,
08: * this list of conditions and the following disclaimer.
09: *
10: * o Redistributions in binary form must reproduce the above copyright notice,
11: * this list of conditions and the following disclaimer in the documentation
12: * and/or other materials provided with the distribution.
13: *
14: * o Neither the name of JETA Software nor the names of its contributors may
15: * be used to endorse or promote products derived from this software without
16: * specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21: * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
22: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23: * INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
25: * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26: * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28: */
29:
30: package com.jeta.open.rules;
31:
32: import java.util.Iterator;
33: import java.util.LinkedList;
34:
35: /**
36: * This class defines a rule for running a composite of rules as one
37: *
38: * @author Jeff Tassin
39: */
40: public class RuleGroup extends AbstractRule {
41:
42: /** params to pass to each rule */
43: private Object[] m_params;
44:
45: /** the rules that form the group */
46: private LinkedList m_rules;
47:
48: /**
49: * ctor
50: */
51: public RuleGroup(Object param) {
52: m_params = new Object[1];
53: m_params[0] = param;
54: }
55:
56: /**
57: * ctor
58: */
59: public RuleGroup(Object[] params) {
60: m_params = params;
61: }
62:
63: public void add(JETARule rule) {
64: if (m_rules == null)
65: m_rules = new LinkedList();
66: m_rules.add(rule);
67: }
68:
69: /**
70: * JETARule implementation
71: */
72: public RuleResult check(Object[] params) {
73: if (m_rules == null)
74: return RuleResult.SUCCESS;
75: else {
76: Iterator iter = m_rules.iterator();
77: while (iter.hasNext()) {
78: JETARule rule = (JETARule) iter.next();
79: RuleResult result = rule.check(m_params);
80: if (result != RuleResult.SUCCESS)
81: return result;
82: }
83: }
84:
85: return RuleResult.SUCCESS;
86: }
87: }
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