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.Predicate;
026: import org.mandarax.xkb.XKBException;
027:
028: /**
029: * An adapter class for predicates from the mandarax lib.
030: * @see org.mandarax.lib.AbstractPredicate
031: * @author <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</A>
032: * @version 3.4 <7 March 05>
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 XMLAdapter4MandaraxLibPredicates extends
037: AbstractXMLAdapter {
038: public static final String MANDARAX_LIB_PREDICATE = "mandarax_lib_predicate";
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, org.mandarax.lib.AbstractPredicate.class);
052: Predicate p = (Predicate) obj;
053: Element e = new Element(MANDARAX_LIB_PREDICATE);
054: e.setAttribute(NAME, p.getClass().getName());
055: return e;
056: }
057:
058: /**
059: * Build an object from an XML element.
060: * @param e an element
061: * @param driver the generic driver
062: * @param cache a cache used to identify objects that have the same id
063: * @param lfactory the logic factory used to create objects
064: * @exception an XKBException is thrown if export fails
065: */
066: public Object importObject(Element e, GenericDriver driver,
067: Map cache, LogicFactory lfactory) throws XKBException {
068: String className = e.getAttributeValue(NAME);
069: // test the registries in mandarax lib for an appropriate class
070: Predicate p = null;
071: if (org.mandarax.lib.Cut.class.getName().equals(className))
072: p = new org.mandarax.lib.Cut();
073: p = lookupLib(p, className,
074: org.mandarax.lib.date.DateArithmetic.ALL_PREDICATES);
075: p = lookupLib(p, className,
076: org.mandarax.lib.math.IntArithmetic.ALL_PREDICATES);
077: p = lookupLib(p, className,
078: org.mandarax.lib.math.DoubleArithmetic.ALL_PREDICATES);
079: p = lookupLib(p, className,
080: org.mandarax.lib.text.StringArithmetic.ALL_PREDICATES);
081: return p;
082: }
083:
084: /**
085: * Lookup the lib for a predicae with a certain class name.
086: * Return if the predicate is not null!
087: * @return a predicate
088: * @param p a predicate
089: * @param className the name of a class
090: * @param libPredicates an array of predicates
091: */
092: private Predicate lookupLib(Predicate p, String className,
093: Predicate[] libPredicates) {
094: if (p != null)
095: return p;
096: for (int i = 0; i < libPredicates.length; i++) {
097: if (libPredicates[i].getClass().getName().equals(className))
098: return libPredicates[i];
099: }
100: return null;
101: }
102:
103: /**
104: * Get the name of the associated tag (element).
105: * @return a string
106: */
107: public String getTagName() {
108: return MANDARAX_LIB_PREDICATE;
109: }
110:
111: /**
112: * Get the kind of object the adapter can export/import.
113: * @return a string
114: */
115: public String getKindOfObject() {
116: return GenericDriver.MANDARAX_LIB_PREDICATE;
117: }
118: }
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