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1 | /* | |
2 | wsmo4j - a WSMO API and Reference Implementation | |
3 | Copyright (c) 2004, DERI Innsbruck | |
4 | This library is free software; you can redistribute it and/or modify it under | |
5 | the terms of the GNU Lesser General Public License as published by the Free | |
6 | Software Foundation; either version 2.1 of the License, or (at your option) | |
7 | any later version. | |
8 | This library is distributed in the hope that it will be useful, but WITHOUT | |
9 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
10 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more | |
11 | details. | |
12 | You should have received a copy of the GNU Lesser General Public License along | |
13 | with this library; if not, write to the Free Software Foundation, Inc., | |
14 | 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
15 | */ | |
16 | package org.deri.wsmo4j.logicalexpression; | |
17 | ||
18 | ||
19 | import java.util.*; | |
20 | ||
21 | import org.deri.wsmo4j.logicalexpression.util.*; | |
22 | ||
23 | import org.omwg.logicalexpression.*; | |
24 | import org.omwg.ontology.*; | |
25 | ||
26 | ||
27 | /** | |
28 | * This abstract class reunites all quantified logical expressions | |
29 | * (e.g qfier {Term} LogExpr) | |
30 | * @author DERI Innsbruck, reto.krummenacher@deri.org | |
31 | * @version $Revision: 1946 $ $Date: 2007-04-02 15:13:28 +0300 (Mon, 02 Apr 2007) $ | |
32 | * @see org.omwg.logicalexpression.Quantified | |
33 | */ | |
34 | public abstract class QuantifiedImpl | |
35 | extends UnaryImpl | |
36 | implements Quantified { | |
37 | ||
38 | protected Set <Variable> variables; | |
39 | ||
40 | /** | |
41 | * @param variables the set of variables that are quantified for the expression | |
42 | * @param expr the logical expression | |
43 | * @throws IllegalArgumentException | |
44 | * <p>in case the operator is different from EXISTS or FORALL</p> | |
45 | * <p>in case the logical expression contains a nested CONSTRAINT</p> | |
46 | * <p>in case the Set of variables is null</p> | |
47 | * <p>in case the arguments of the list aren't all of Type Variable</p> | |
48 | */ | |
49 | 0 | public QuantifiedImpl(Set <Variable> variables, LogicalExpression expr) |
50 | throws IllegalArgumentException { | |
51 | 0 | super(expr); |
52 | 0 | setVariables(variables); |
53 | ||
54 | } | |
55 | ||
56 | /** | |
57 | * @return the set of variables that are quantified for the expression | |
58 | * @see org.omwg.logicalexpression.Quantified#listVariables() | |
59 | */ | |
60 | 0 | public Set <Variable> listVariables() { |
61 | 0 | return variables; |
62 | } | |
63 | ||
64 | /** | |
65 | * @see org.omwg.logicalexpression.LogicalExpression#accept(org.omwg.logicalexpression.Visitor) | |
66 | */ | |
67 | public abstract void accept(Visitor v); | |
68 | ||
69 | /* (non-Javadoc) | |
70 | * @see org.omwg.logicalexpression.Quantified#setVariables(java.util.Set) | |
71 | */ | |
72 | 0 | public void setVariables(Set <Variable> variables) { |
73 | 0 | if (variables == null) { |
74 | 0 | throw new IllegalArgumentException("Quantified Expression must have at least one Variable"); |
75 | } | |
76 | 0 | if (!SetUtil.allOfType(variables, Variable.class)) { |
77 | 0 | throw new IllegalArgumentException("Set variables may only contain org.omwg.logicalexpression.variables"); |
78 | } | |
79 | 0 | this.variables = Collections.unmodifiableSet(variables); |
80 | } | |
81 | ||
82 | } |
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