1 /*
2 * Copyright (c) 2007, Fraunhofer-Gesellschaft
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * (1) Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the disclaimer at the end.
11 * Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * (2) Neither the name of Fraunhofer nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * DISCLAIMER
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 */
35 package org.ogf.graap.wsag.interpreter.expr;
36
37 import org.ogf.graap.wsag.interpreter.InterpreterContext;
38 import org.ogf.graap.wsag.interpreter.InterpreterException;
39 import org.ogf.schemas.graap.wsAgreement.TermCompositorType;
40 import org.ogf.schemas.graap.wsAgreement.TermType;
41
42 /**
43 * ExactlyOneExpression
44 *
45 * @author Oliver Waeldrich
46 *
47 */
48 public class ExactlyOneExpression extends AbstractExpression
49 {
50
51 /**
52 * @param expression
53 * a term compositor representing an ExactlyOne expression
54 */
55 public ExactlyOneExpression( TermCompositorType expression )
56 {
57 super( expression );
58 }
59
60 /**
61 * {@inheritDoc}
62 *
63 * @see org.ogf.graap.wsag.interpreter.expr.AbstractExpression#interpret(TermType [], InterpreterContext)
64 */
65 protected TermType[] interpret( TermType[] terms, InterpreterContext context )
66 throws InterpreterException
67 {
68 //
69 // TODO: we should apply some strategy here to choose the best suited term
70 // ==> add strategy pattern in order to allow customization of the interpreter
71 //
72
73 if ( terms.length != 1 )
74 {
75 throw new InterpreterException( "ExactlyOne expression returned interpretation result unequal 1." );
76 }
77
78 return terms;
79 }
80
81 }