001: package org.mandarax.xkb.framework;
002:
003: /**
004: * Copyright (C) 1999-2004 Jens Dietrich (mailto:mandarax@jbdietrich.com)
005: *
006: * This library 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 library 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:
021: import java.util.Map;
022:
023: import org.jdom.Element;
024: import org.mandarax.kernel.LogicFactory;
025: import org.mandarax.kernel.SimplePredicate;
026: import org.mandarax.xkb.XKBException;
027:
028: /**
029: * An adapter class for simple predicates.
030: * @author <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</A>
031: * @version 3.4 <7 March 05>
032: * @see org.mandarax.kernel.SimplePredicate
033: * @since 1.6
034: * @deprecated from v 3.4 - support for new features such as validation will not be added to XKB, please use ZKB instead
035: */
036: public class XMLAdapter4SimplePredicates extends AbstractXMLAdapter {
037: public static final String SIMPLE_PREDICATE = "simple_predicate";
038: public static final String STRUCTURE = "structure";
039: public static final String NAME = "name";
040:
041: /**
042: * Export an object, i.e., convert it to an element in the DOM.
043: * @param obj an object
044: * @param driver the generic driver
045: * @param cache a cache used in order to associate the same
046: * id with various occurences of the same object
047: * @exception an XKBException is thrown if export fails
048: */
049: public Element exportObject(Object obj, GenericDriver driver,
050: Map cache) throws XKBException {
051: check(obj, SimplePredicate.class);
052: SimplePredicate p = (SimplePredicate) obj;
053: Element e = new Element(SIMPLE_PREDICATE);
054:
055: // add name
056: e.setAttribute(NAME, p.getName());
057:
058: // add structure
059: Element es = new Element(STRUCTURE);
060: e.addContent(es);
061: exportChildren(p.getStructure(), es, GenericDriver.TYPE,
062: driver, cache);
063:
064: return e;
065: }
066:
067: /**
068: * Build an object from an XML element.
069: * @param e an element
070: * @param driver the generic driver
071: * @param cache a cache used to identify objects that have the same id
072: * @param lfactory the logic factory used to create objects
073: * @exception an XKBException is thrown if import fails
074: */
075: public Object importObject(Element e, GenericDriver driver,
076: Map cache, LogicFactory lfactory) throws XKBException {
077: // get name
078: String predicateName = e.getAttributeValue(NAME);
079:
080: // get structure
081: Element eStruct = e.getChild(STRUCTURE);
082: Class[] structure = (Class[]) this .importChildren(eStruct,
083: null, driver, cache, lfactory, Class.class);
084:
085: // build predicate
086: return new SimplePredicate(predicateName, structure);
087: }
088:
089: /**
090: * Get the name of the associated tag (element).
091: * @return a string
092: */
093: public String getTagName() {
094: return SIMPLE_PREDICATE;
095: }
096:
097: /**
098: * Get the kind of object the adapter can export/import.
099: * @return a string
100: */
101: public String getKindOfObject() {
102: return GenericDriver.SIMPLE_PREDICATE;
103: }
104: }
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