01: // ============================================================================
02: // $Id: ApplyUnary.java,v 1.9 2006/08/16 03:02:21 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.UnaryFunctor;
36: import net.sf.jga.util.ArrayUtils;
37:
38: /**
39: * Produces an array containing the results of passing an input argument to a given set of unary
40: * 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 ApplyUnary<T> extends UnaryFunctor<T, Object[]> {
47:
48: static final long serialVersionUID = -7934367561074978884L;
49:
50: private UnaryFunctor<T, ?>[] _functors;
51:
52: public ApplyUnary(UnaryFunctor<T, ?>... functors) {
53: _functors = functors;
54: }
55:
56: public UnaryFunctor<T, ?>[] getFunctors() {
57: return _functors;
58: }
59:
60: public Object[] fn(T arg) {
61: Object[] result = new Object[_functors.length];
62: for (int i = 0; i < _functors.length; ++i) {
63: result[i] = _functors[i].fn(arg);
64: }
65:
66: return result;
67: }
68:
69: /**
70: * Calls the Visitor's <code>visit(ApplyUnary)</code> method, if it
71: * implements the nested Visitor interface.
72: */
73: public void accept(net.sf.jga.fn.Visitor v) {
74: if (v instanceof ApplyUnary.Visitor)
75: ((ApplyUnary.Visitor) v).visit(this );
76: else
77: v.visit(this );
78: }
79:
80: // Object overrides
81:
82: public String toString() {
83: return ArrayUtils.toString(_functors);
84: }
85:
86: // AcyclicVisitor
87:
88: /**
89: * Interface for classes that may interpret an <b>ApplyUnary</b> predicate.
90: */
91: public interface Visitor extends net.sf.jga.fn.Visitor {
92: public void visit(ApplyUnary host);
93: }
94: }
|