01: /*
02: * Copyright 2001-2005 Stephen Colebourne
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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: }
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