1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package javax.servlet.jsp.tagext;
18
19 import javax.servlet.jsp.JspException;
20
21 /**
22 * For a tag to declare that it accepts dynamic attributes, it must implement
23 * this interface. The entry for the tag in the Tag Library Descriptor must
24 * also be configured to indicate dynamic attributes are accepted.
25 * <br>
26 * For any attribute that is not declared in the Tag Library Descriptor for
27 * this tag, instead of getting an error at translation time, the
28 * <code>setDynamicAttribute()</code> method is called, with the name and
29 * value of the attribute. It is the responsibility of the tag to
30 * remember the names and values of the dynamic attributes.
31 *
32 * @since 2.0
33 */
34 public interface DynamicAttributes {
35
36 /**
37 * Called when a tag declared to accept dynamic attributes is passed
38 * an attribute that is not declared in the Tag Library Descriptor.
39 *
40 * @param uri the namespace of the attribute, or null if in the default
41 * namespace.
42 * @param localName the name of the attribute being set.
43 * @param value the value of the attribute
44 * @throws JspException if the tag handler wishes to
45 * signal that it does not accept the given attribute. The
46 * container must not call doStartTag() or doTag() for this tag.
47 */
48 public void setDynamicAttribute(
49 String uri, String localName, Object value )
50 throws JspException;
51
52 }