01: // Copyright 2006 The Apache Software Foundation
02: //
03: // Licensed under the Apache License, Version 2.0 (the "License");
04: // you may not use this file except in compliance with the License.
05: // You may obtain a copy of the License at
06: //
07: // http://www.apache.org/licenses/LICENSE-2.0
08: //
09: // Unless required by applicable law or agreed to in writing, software
10: // distributed under the License is distributed on an "AS IS" BASIS,
11: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12: // See the License for the specific language governing permissions and
13: // limitations under the License.
14:
15: package org.apache.tapestry.ioc.internal.util;
16:
17: import org.apache.tapestry.ioc.MessageFormatter;
18:
19: /**
20: *
21: */
22: public class MessageFormatterImpl implements MessageFormatter {
23: private final String _format;
24:
25: public MessageFormatterImpl(String format) {
26: _format = format;
27: }
28:
29: public String format(Object... args) {
30: for (int i = 0; i < args.length; i++) {
31: Object arg = args[i];
32:
33: if (Throwable.class.isInstance(arg)) {
34: Throwable t = (Throwable) arg;
35: String message = t.getMessage();
36:
37: args[i] = message != null ? message : t.getClass()
38: .getName();
39: }
40: }
41:
42: // Might be tempting to create a Formatter object and just keep reusing it ... but
43: // Formatters are not threadsafe.
44:
45: return String.format(_format, args);
46: }
47:
48: }
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