booleantag.java

来自「招标投标网上系统」· Java 代码 · 共 40 行

/*
 * $Id: BooleanTag.java,v 1.2 2001/10/21 04:46:04 gmurray Exp $
 * Copyright 2001 Sun Microsystems, Inc. All rights reserved.
 */

package com.neusoft.taglibs.smart;

import javax.servlet.jsp.*;

/**
 * A conditional tag returning whether a Boolean or String
 * representing a boolean is true.
 */
public class BooleanTag
    extends ConditionalTag {

  protected boolean doTest(Object o) throws JspTagException {
    if (o == null) {
      return false;
    }
    else if (o instanceof String) {
      return Boolean.valueOf( (String) o).booleanValue();
    }
    else if (o instanceof Boolean) {
      return ( (Boolean) o).booleanValue();
    }
    else {
      throw new JspTagException("ConditionalTag: Not a String or Boolean.");
    }
  }

  public void setProperty() {

  }

  private void testProperty() {

  }
}