1 /*
2 * Copyright 2001-2005 Stephen Colebourne
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.joda.time.convert;
17
18 /**
19 * DurationConverter defines how an object is converted to a millisecond duration.
20 *
21 * @author Stephen Colebourne
22 * @author Brian S O'Neill
23 * @since 1.0
24 */
25 public interface DurationConverter extends Converter {
26
27 /**
28 * Extracts the millis from an object of this convertor's type.
29 *
30 * @param object the object to convert, must not be null
31 * @return the millisecond duration
32 * @throws ClassCastException if the object is invalid
33 */
34 long getDurationMillis(Object object);
35
36 }