01: // ============================================================================
02: // $Id: ApplyBinary.java,v 1.8 2006/08/16 03:02:41 davidahall Exp $
03: // Copyright (c) 2004-2005 David A. Hall
04: // ============================================================================
05: // The contents of this file are subject to the Common Development and
06: // Distribution License (CDDL), Version 1.0 (the License); you may not use this
07: // file except in compliance with the License. You should have received a copy
08: // of the the License along with this file: if not, a copy of the License is
09: // available from Sun Microsystems, Inc.
10: //
11: // http://www.sun.com/cddl/cddl.html
12: //
13: // From time to time, the license steward (initially Sun Microsystems, Inc.) may
14: // publish revised and/or new versions of the License. You may not use,
15: // distribute, or otherwise make this file available under subsequent versions
16: // of the License.
17: //
18: // Alternatively, the contents of this file may be used under the terms of the
19: // GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which
20: // case the provisions of the LGPL are applicable instead of those above. If you
21: // wish to allow use of your version of this file only under the terms of the
22: // LGPL, and not to allow others to use your version of this file under the
23: // terms of the CDDL, indicate your decision by deleting the provisions above
24: // and replace them with the notice and other provisions required by the LGPL.
25: // If you do not delete the provisions above, a recipient may use your version
26: // of this file under the terms of either the CDDL or the LGPL.
27: //
28: // This library is distributed in the hope that it will be useful,
29: // but WITHOUT ANY WARRANTY; without even the implied warranty of
30: // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
31: // ============================================================================
32:
33: package net.sf.jga.fn.adaptor;
34:
35: import net.sf.jga.fn.BinaryFunctor;
36: import net.sf.jga.util.ArrayUtils;
37:
38: /**
39: * Produces an array containing the results of passing a pair of input arguments to
40: * a given set of binary functors.
41: * <p>
42: * Copyright © 2004-2005 David A. Hall
43: * @author <a href="mailto:davidahall@users.sf.net">David A. Hall</a>
44: */
45:
46: public class ApplyBinary<T1, T2> extends
47: BinaryFunctor<T1, T2, Object[]> {
48:
49: static final long serialVersionUID = 626713969730810589L;
50:
51: //
52: private BinaryFunctor<T1, T2, ?>[] _functors;
53:
54: public ApplyBinary(BinaryFunctor<T1, T2, ?>[] functors) {
55: _functors = functors;
56: }
57:
58: public BinaryFunctor<T1, T2, ?>[] getFunctors() {
59: return _functors;
60: }
61:
62: public Object[] fn(T1 arg1, T2 arg2) {
63: Object[] result = new Object[_functors.length];
64: for (int i = 0; i < _functors.length; ++i) {
65: result[i] = _functors[i].fn(arg1, arg2);
66: }
67:
68: return result;
69: }
70:
71: /**
72: * Calls the Visitor's <code>visit(ApplyBinary)</code> method, if it
73: * implements the nested Visitor interface.
74: */
75: public void accept(net.sf.jga.fn.Visitor v) {
76: if (v instanceof ApplyBinary.Visitor)
77: ((ApplyBinary.Visitor) v).visit(this );
78: else
79: v.visit(this );
80: }
81:
82: // Object overrides
83:
84: public String toString() {
85: return ArrayUtils.toString(_functors);
86: }
87:
88: // AcyclicVisitor
89:
90: /**
91: * Interface for classes that may interpret an <b>ApplyBinary</b> predicate.
92: */
93: public interface Visitor extends net.sf.jga.fn.Visitor {
94: public void visit(ApplyBinary host);
95: }
96: }
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