nesteddefinetei.java

strust 框架 的源程序以及java类源代码

/*
 * $Id: NestedDefineTei.java 54929 2004-10-16 16:38:42Z germuska $ 
 *
 * Copyright 1999-2004 The Apache Software Foundation.
 * 
 * Licensed 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.taglib.nested.bean;

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

import org.apache.struts.taglib.logic.IterateTei;

/**
 * NestedDefineTei to make sure that the implied setting of the name property
 * of a nested tag is properly handed in the casting of the defined object.
 * Currently goes to String, but for the purposes of most nested objects they
 * will benefit more from a simple Object casting.
 *
 *
 * @since Struts 1.1
 * @version $Rev: 54929 $
 */

public class NestedDefineTei extends IterateTei {

  /**
   * Return information about the scripting variables to be created.
   */
  public VariableInfo[] getVariableInfo(TagData data) {
    // get the type
    String type = (String)data.getAttribute("type");

    // make it an object if none supplied
    if (type == null) {
      type = "java.lang.Object";
    }

    // return the infor about the deined object
    VariableInfo[] vinfo = new VariableInfo[1];
    vinfo[0] = new VariableInfo(data.getAttributeString("id"),
                                type, true, VariableInfo.AT_END );

    /* return the results */
    return vinfo;
  }
}