01: /*
02: * hammurapi-rules @mesopotamia.version@
03: * Hammurapi rules engine.
04: * Copyright (C) 2005 Hammurapi Group
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation; either
09: * version 2 of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with this library; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19: *
20: * URL: http://http://www.hammurapi.biz
21: * e-Mail: support@hammurapi.biz
22: */
23: package biz.hammurapi.rules;
24:
25: import javax.xml.transform.TransformerException;
26:
27: import org.w3c.dom.Element;
28: import org.w3c.dom.Node;
29:
30: import biz.hammurapi.config.ConfigurationException;
31: import biz.hammurapi.config.DomConfigurableContainer;
32: import biz.hammurapi.config.RuntimeConfigurationException;
33: import biz.hammurapi.xml.dom.DOMUtils;
34:
35: /**
36: * Base class for containers of rules.
37: * Implements getComponentName() method which returns value of <code><rule>/<name></code> element.
38: * @author Pavel Vlasov
39: * @revision $Revision$
40: */
41: public abstract class RulesContainerBase extends
42: DomConfigurableContainer implements KnowledgeBase {
43:
44: public RulesContainerBase() {
45: super ();
46: }
47:
48: protected String getComponentName(Node node) {
49: try {
50: return DOMUtils.getSingleNonBlankElementText(
51: (Element) node, "name");
52: } catch (ConfigurationException e) {
53: throw new RuntimeConfigurationException(
54: "Cannot read rule name: " + e, e);
55: } catch (TransformerException e) {
56: throw new RuntimeConfigurationException(
57: "Cannot read rule name: " + e, e);
58: }
59: }
60: }
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