useattributetei.java

structs源码

/*
 * $Id: UseAttributeTei.java 471754 2006-11-06 14:55:09Z husted $
 *
 * 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.
 */

package org.apache.struts.tiles.taglib;


import javax.servlet.jsp.tagext.TagData;
import javax.servlet.jsp.tagext.TagExtraInfo;
import javax.servlet.jsp.tagext.VariableInfo;


/**
 * Implementation of <code>TagExtraInfo</code> for the <b>UseAttribute</b>
 * tag, identifying the scripting object(s) to be made visible.
 *
 */

public final class UseAttributeTei extends TagExtraInfo {


    /**
     * Return information about the scripting variables to be created.
     */
    public VariableInfo[] getVariableInfo(TagData data) {

      String classname = data.getAttributeString("classname");
      if( classname == null )
        classname = "java.lang.Object";
      String id = data.getAttributeString("id");
      if( id == null )
        id = data.getAttributeString("name");

      return new VariableInfo[] {
      new VariableInfo(id,
                       classname,
                       true,
                       VariableInfo.AT_END)
  };

    }


}