nesteddefinetei.java

这是一个轻便的j2ee的web应用框架,是一个在多个项目中运用的实际框架,采用struts,hebinate,xml等技术,有丰富的tag,role,navigation,session,dictio

/*
 * $Header: /sfroot/cvs/esimple/src/core/com/esimple/framework/web/taglib/nested/bean/NestedDefineTei.java,v 1.1.1.1 2004/09/08 06:38:22 lava Exp $
 * $Revision: 1.1.1.1 $
 * $Date: 2004/09/08 06:38:22 $
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2003 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", "Struts", 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 [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
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 * 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
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 * 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
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 * 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/>.
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 */
package com.esimple.framework.web.taglib.nested.bean;

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

import com.esimple.framework.web.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.
 *
 * @author Arron Bates
 *
 * @since Struts 1.1
 * @version $Revision: 1.1.1.1 $
 */

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;
  }
}