- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution, if
- * any, must include the following acknowlegement:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowlegement may appear in the software itself,
- * if and wherever such third-party acknowlegements normally appear.
- *
- * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
- * Foundation" must not be used to endorse or promote products derived
- * from this software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- * nor may "Apache" appear in their names without prior written
- * permission of the Apache Group.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- *
- */
-
- package javax.servlet.jsp.tagext;
-
- /**
- * Optional class provided by the tag library author to describe additional
- * translation-time information not described in the TLD.
- * The TagExtraInfo class is mentioned in the Tag Library Descriptor file (TLD).
- *
- * <p>
- * This class can be used:
- * <ul>
- * <li> to indicate that the tag defines scripting variables
- * <li> to perform translation-time validation of the tag attributes.
- * </ul>
- *
- * <p>
- * It is the responsibility of the JSP translator that the initial value
- * to be returned by calls to getTagInfo() corresponds to a TagInfo
- * object for the tag being translated. If an explicit call to
- * setTagInfo() is done, then the object passed will be returned in
- * subsequent calls to getTagInfo().
- *
- * <p>
- * The only way to affect the value returned by getTagInfo()
- * is through a setTagInfo() call, and thus, TagExtraInfo.setTagInfo() is
- * to be called by the JSP translator, with a TagInfo object that
- * corresponds to the tag being translated. The call should happen before
- * any invocation on isValid() and before any invocation on
- * getVariableInfo().
- */
-
- public abstract class TagExtraInfo {
-
- /**
- * information on scripting variables defined by the tag associated with
- * this TagExtraInfo instance.
- * Request-time attributes are indicated as such in the TagData parameter.
- *
- * @param data The TagData instance.
- * @return An array of VariableInfo data.
- */
- public VariableInfo[] getVariableInfo(TagData data) {
- return new VariableInfo[0];
- }
-
- /**
- * Translation-time validation of the attributes.
- * Request-time attributes are indicated as such in the TagData parameter.
- *
- * @param data The TagData instance.
- * @return Whether this tag instance is valid.
- */
-
- public boolean isValid(TagData data) {
- return true;
- }
-
- /**
- * Set the TagInfo for this class.
- *
- * @param tagInfo The TagInfo this instance is extending
- */
- public final void setTagInfo(TagInfo tagInfo) {
- this.tagInfo = tagInfo;
- }
-
- /**
- * Get the TagInfo for this class.
- *
- * @return the taginfo instance this instance is extending
- */
- public final TagInfo getTagInfo() {
- return tagInfo;
- }
-
- // private data
- private TagInfo tagInfo;
- }
-