/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ // // This source code implements specifications defined by the Java // Community Process. In order to remain compliant with the specification // DO NOT add / change / or delete method signatures! // package javax.servlet.jsp.tagext; import java.util.Hashtable; /** * The (translation-time only) attribute/value information for a tag instance. * *
* TagData is only used as an argument to the isValid, validate, and * getVariableInfo methods of TagExtraInfo, which are invoked at * translation time. */ public class TagData implements Cloneable { /** * Distinguished value for an attribute to indicate its value * is a request-time expression (which is not yet available because * TagData instances are used at translation-time). */ public static final Object REQUEST_TIME_VALUE = new Object(); /** * Constructor for TagData. * *
* A typical constructor may be *
* static final Object[][] att = {{"connection", "conn0"}, {"id", "query0"}}; * static final TagData td = new TagData(att); ** * All values must be Strings except for those holding the * distinguished object REQUEST_TIME_VALUE. * @param atts the static attribute and values. May be null. */ public TagData(Object[] atts[]) { if (atts == null) { attributes = new Hashtable(); } else { attributes = new Hashtable(atts.length); } if (atts != null) { for (int i = 0; i < atts.length; i++) { attributes.put(atts[i][0], atts[i][1]); } } } /** * Constructor for a TagData. * * If you already have the attributes in a hashtable, use this * constructor. * * @param attrs A hashtable to get the values from. */ public TagData(Hashtable attrs) { this.attributes = attrs; } /** * The value of the tag's id attribute. * * @return the value of the tag's id attribute, or null if no such * attribute was specified. */ public String getId() { return getAttributeString(TagAttributeInfo.ID); } /** * The value of the attribute. * If a static value is specified for an attribute that accepts a * request-time attribute expression then that static value is returned, * even if the value is provided in the body of a