01: /*
02: * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * version 2 for more details (a copy is included in the LICENSE file that
15: * accompanied this code).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package com.sun.tools.internal.xjc.generator.bean.field;
27:
28: import com.sun.tools.internal.xjc.generator.bean.ClassOutlineImpl;
29: import com.sun.tools.internal.xjc.model.CPropertyInfo;
30: import com.sun.tools.internal.xjc.outline.FieldOutline;
31:
32: /**
33: * {@link FieldRenderer} for possibly constant field.
34: *
35: * <p>
36: * Since we don't know if the constant can be actually generated until
37: * we get to the codemodel building phase, this renderer lazily
38: * determines if it wants to generate a constant field or a normal property.
39: *
40: * @author Kohsuke Kawaguchi
41: */
42: final class ConstFieldRenderer implements FieldRenderer {
43:
44: private final FieldRenderer fallback;
45:
46: protected ConstFieldRenderer(FieldRenderer fallback) {
47: this .fallback = fallback;
48: }
49:
50: public FieldOutline generate(ClassOutlineImpl outline,
51: CPropertyInfo prop) {
52: if (prop.defaultValue.compute(outline.parent()) == null)
53: return fallback.generate(outline, prop);
54: else
55: return new ConstField(outline, prop);
56: }
57: }
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