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From catl...@apache.org
Subject cvs commit: jakarta-taglibs/random/src/org/apache/taglibs/random RandomNum.java
Date Mon, 21 May 2001 20:55:22 GMT
catlett     01/05/21 13:55:22

  Added:       random/src/org/apache/taglibs/random RandomNum.java
  Log:
  first import of random taglib
  
  Revision  Changes    Path
  1.1                  jakarta-taglibs/random/src/org/apache/taglibs/random/RandomNum.java
  
  Index: RandomNum.java
  ===================================================================
  /*
   * $Header: /home/cvs/jakarta-taglibs/random/src/org/apache/taglibs/random/RandomNum.java,v
1.1 2001/05/21 20:55:21 catlett Exp $
   * $Revision: 1.1 $
   * $Date: 2001/05/21 20:55:21 $
   *
   * ====================================================================
   *
   * 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 org.apache.taglibs.random;
  
  import java.util.*;
  
  /**
   * The RandomNum will produce a variable set of random numbers.
   *
   * @author Rich Catlett
   *
   * @version 1.0
   *
   */
  
  public class RandomNum {
  
      /**
       * the random number is stroed here for retrieval
       */
      private Long randomnum = null;
      /**
       * the random number is stroed here for retrieval
       */
      private Float randomfloat = null;
      /**
       * flag tells if a float value is expected or not
       */
      private boolean floatvalue = false;
      /**
       * upper bound in which to search for a number defaults to 9
       */
      private long upper = 100;
      /**
       * lower bound in which to search for a number defaults to 0
       */
      private long lower = 0;
  
      /**
       * generate the random number
       *
       */
      private final void generaterandom() {
  
  	int tmprandom = 0;  // temp storage for random generated number
  	Integer rand;
  
  	// check to see if float value is expected
  	if (floatvalue)
  	    randomfloat = new Float(Math.random());
          else
  	    randomnum = new Long(lower + (long) ((Math.random() * (upper - lower))));
      }
  
      /**
       * get the random number, for use with the 
       * &lt;jsp:getProperty name=<i>"id"</i> property="floatval"/&gt;
       *
       * @return - randomly created float value
       *
       * @throws - JspException if the range entered for the number generator is not
       *           0-1
       */
      public final Number getRandom() {
  
  	generaterandom(); // generate the first random number
  
  	if (floatvalue)
  	    return randomfloat;
  	else
  	    return randomnum;
      }
  
      /**
       * set the Range
       *
       * @param low  lower bound of the range
       * @param up  upper bound of the range
       *
       */
      public final void setRange(long low, long up) {
  
  	// set the upper and lower bound of the range
  	lower = low;
  	upper = up;
  
  	// check to see if a float value is expected
  	if ((lower == 0) && (upper == 1))
  	    floatvalue = true;
      }
  }
  
  
  

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