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IPropertyHolder.java | - | - | - | - |
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1 | // Copyright 2004, 2005 The Apache Software Foundation | |
2 | // | |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | // you may not use this file except in compliance with the License. | |
5 | // You may obtain a copy of the License at | |
6 | // | |
7 | // http://www.apache.org/licenses/LICENSE-2.0 | |
8 | // | |
9 | // 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.util; | |
16 | ||
17 | import java.util.List; | |
18 | ||
19 | /** | |
20 | * An interface that defines an object that can store named propertys. The names | |
21 | * and the properties are Strings. | |
22 | * | |
23 | * @author Howard Lewis Ship | |
24 | * | |
25 | **/ | |
26 | ||
27 | public interface IPropertyHolder | |
28 | { | |
29 | /** | |
30 | * Returns a List of Strings, the names of all | |
31 | * properties held by the receiver. May return an empty list. | |
32 | * The List is sorted alphabetically. The List may be modified | |
33 | * without affecting this property holder. | |
34 | * | |
35 | * <p>Prior to release 2.2, this method returned Collection. | |
36 | * | |
37 | **/ | |
38 | ||
39 | public List getPropertyNames(); | |
40 | ||
41 | /** | |
42 | * Sets a named property. The new value replaces the existing value, if any. | |
43 | * Setting a property to null is the same as removing the property. | |
44 | * | |
45 | **/ | |
46 | ||
47 | public void setProperty(String name, String value); | |
48 | ||
49 | /** | |
50 | * Removes the named property, if present. | |
51 | * | |
52 | **/ | |
53 | ||
54 | public void removeProperty(String name); | |
55 | ||
56 | /** | |
57 | * Retrieves the named property, or null if the property is not defined. | |
58 | * | |
59 | **/ | |
60 | ||
61 | public String getProperty(String name); | |
62 | } |
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