001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *  http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    
020    //
021    // This source code implements specifications defined by the Java
022    // Community Process. In order to remain compliant with the specification
023    // DO NOT add / change / or delete method signatures!
024    //
025    
026    package javax.servlet.jsp.tagext;
027    
028    import javax.servlet.jsp.JspException;
029    
030    /**
031     * For a tag to declare that it accepts dynamic attributes, it must implement
032     * this interface.  The entry for the tag in the Tag Library Descriptor must 
033     * also be configured to indicate dynamic attributes are accepted.
034     * <br>
035     * For any attribute that is not declared in the Tag Library Descriptor for
036     * this tag, instead of getting an error at translation time, the 
037     * <code>setDynamicAttribute()</code> method is called, with the name and
038     * value of the attribute.  It is the responsibility of the tag to 
039     * remember the names and values of the dynamic attributes.
040     *
041     * @since 2.0
042     */
043    public interface DynamicAttributes {
044        
045        /**
046         * Called when a tag declared to accept dynamic attributes is passed
047         * an attribute that is not declared in the Tag Library Descriptor.
048         * 
049         * @param uri the namespace of the attribute, or null if in the default
050         *     namespace.
051         * @param localName the name of the attribute being set.
052         * @param value the value of the attribute
053         * @throws JspException if the tag handler wishes to
054         *     signal that it does not accept the given attribute.  The 
055         *     container must not call doStartTag() or doTag() for this tag.
056         */
057        public void setDynamicAttribute(
058            String uri, String localName, Object value ) 
059            throws JspException;
060        
061    }