01: /*
02: * Copyright (C) 1999-2004 <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</a>
03: *
04: * This library is free software; you can redistribute it and/or
05: * modify it under the terms of the GNU Lesser General Public
06: * License as published by the Free Software Foundation; either
07: * version 2 of the License, or (at your option) any later version.
08: *
09: * This library is distributed in the hope that it will be useful,
10: * but WITHOUT ANY WARRANTY; without even the implied warranty of
11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12: * Lesser General Public License for more details.
13: *
14: * You should have received a copy of the GNU Lesser General Public
15: * License along with this library; if not, write to the Free Software
16: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17: */
18: package org.mandarax.lib;
19:
20: import org.mandarax.kernel.Function;
21:
22: /**
23: * Abstract super class mandarax lib functions.
24: * @author <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</A>
25: * @version 3.4 <7 March 05>
26: * @since 1.6
27: */
28: public abstract class AbstractFunction extends LibObject implements
29: Function {
30:
31: /**
32: * Indicates whether the object (usually a term or a clause set) can be performed
33: * using the java semantics. All Mandarax lib functions support this.
34: * @return true
35: */
36: public boolean isExecutable() {
37: return true;
38: }
39:
40: /**
41: * Convert the object to a string.
42: * @return a string
43: */
44: public String toString() {
45: return (getName() == null) ? super.toString() : getName();
46: }
47: }
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