001 /* 002 * hammurapi-rules @mesopotamia.version@ 003 * Hammurapi rules engine. 004 * Copyright (C) 2005 Hammurapi Group 005 * 006 * This program is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 2 of the License, or (at your option) any later version. 010 * 011 * This program is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with this library; if not, write to the Free Software 018 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 019 * 020 * URL: http://http://www.hammurapi.biz 021 * e-Mail: support@hammurapi.biz 022 */ 023 package biz.hammurapi.rules; 024 025 import org.w3c.dom.Element; 026 import org.w3c.dom.Node; 027 028 import biz.hammurapi.config.DomConfigurableContainer; 029 import biz.hammurapi.config.RuntimeConfigurationException; 030 import biz.hammurapi.xml.dom.DOMUtils; 031 032 033 /** 034 * Base class for containers of rules. 035 * Implements getComponentName() method which returns value of <code><rule>/<name></code> element. 036 * @author Pavel Vlasov 037 * @revision $Revision$ 038 */ 039 public abstract class RulesContainerBase extends DomConfigurableContainer implements KnowledgeBase { 040 041 public RulesContainerBase() { 042 super(); 043 } 044 045 protected String getComponentName(Node node) { 046 try { 047 return DOMUtils.getSingleNonBlankElementText((Element) node, "name"); 048 } catch (Exception e) { 049 throw new RuntimeConfigurationException("Cannot read rule name: "+e, e); 050 } 051 } 052 }