01: package org.mandarax.zkb.framework;
02:
03: /**
04: * Copyright (C) 1999-2004 Jens Dietrich (mailto:mandarax@jbdietrich.com)
05: *
06: * This library 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 library 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:
21: import org.jdom.Element;
22: import org.mandarax.kernel.Function;
23: import org.mandarax.kernel.LogicFactory;
24: import org.mandarax.zkb.ObjectPersistencyService;
25: import org.mandarax.zkb.ZKBException;
26:
27: /**
28: * An adapter class for JFunctions.
29: * @see org.mandarax.kernel.Function
30: * @author <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</A>
31: * @version 3.4 <7 March 05>
32: * @since 2.2
33: */
34: public class Adapter4Functions extends AbstractAdapter {
35:
36: /**
37: * Export an object, i.e., convert it to an element in the DOM.
38: * @param obj an object
39: * @param driver the generic driver
40: * @param ops the object persistency service
41: * @exception a ZKBException is thrown if export fails
42: */
43: public Element exportObject(Object obj, GenericDriver driver,
44: ObjectPersistencyService ops) throws ZKBException {
45: check(obj, Function.class);
46: Function f = (Function) obj;
47: Element e = new Element(FUNCTION);
48: assignURI(e, ops, f);
49: // the attribute is redumdant
50: e.setAttribute(NAME, f.getName());
51: return e;
52: }
53:
54: /**
55: * Build an object from an XML element.
56: * @param e an element
57: * @param driver the generic driver
58: * @param ops the object persistency service
59: * @param lfactory the logic factory used to create objects
60: * @exception a ZKBException is thrown if export fails
61: */
62: public Object importObject(Element e, GenericDriver driver,
63: ObjectPersistencyService ops, LogicFactory lfactory)
64: throws ZKBException {
65: return (Function) this .getObjectByURI(e, ops);
66: }
67:
68: /**
69: * Get the name of the associated tag (element).
70: * @return a string
71: */
72: public String getTagName() {
73: return FUNCTION;
74: }
75:
76: /**
77: * Print the DTD associated with this adapter on a string buffer.
78: * @param out the buffer to print on.
79: */
80: public void printDTD(StringBuffer out) {
81: out.append("<!ELEMENT function (#PCDATA)>\n");
82: out.append("<!ATTLIST function name CDATA #REQUIRED>\n");
83: }
84:
85: }
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