Coverage Report

Coverage Report - org.webmacro.util.CastUtil

Classes in this File

Line Coverage

Branch Coverage

Complexity

CastUtil

3/102

0/51

4.929

 /*
  * Copyright (C) 1998-2000 Semiotek Inc.  All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted under the terms of either of the following
  * Open Source licenses:
  *
  * The GNU General Public License, version 2, or any later version, as
  * published by the Free Software Foundation
  * (http://www.fsf.org/copyleft/gpl.html);
  *
  *  or
  *
  * The Semiotek Public License (http://webmacro.org/LICENSE.)
  *
  * This software is provided "as is", with NO WARRANTY, not even the
  * implied warranties of fitness to purpose, or merchantability. You
  * assume all risks and liabilities associated with its use.
  *
  * See www.webmacro.org for more information on the WebMacro project.
  */
 package org.webmacro.util;
 
 /**
  * A singleton for casting one type to another.
  * 
  * @author  keats_kirsch
  * @since 0.96
  */
 public final class CastUtil
 {
 
     static private CastUtil _singleton = new CastUtil();
 
     /** private constructor for singleton */
     private CastUtil ()
     {
     }
 
     public static CastUtil getInstance ()
     {
         return _singleton;
     }
 
     public static Boolean toBoolean (java.lang.Object o)
     {
         if (o == null) return Boolean.FALSE;
         return Boolean.valueOf(o.toString());
     }
 
     public static Character toChar (Object o) throws org.webmacro.PropertyException
     {
         Character c = null;
         if (o == null || o == "") return null;
         if (o instanceof Character) return (Character) o;
         if (o instanceof Number)
         {
             try
             {
                 c = new Character((char) ((Number) o).intValue());
             }
             catch (Exception e)
             {
                 throw new IllegalArgumentException(
                         "Not a valid char: " +  
                             o.toString() + "; type=" + o.getClass().getName());
             }
         }
         else if (o instanceof String)
         {
             String s = (String) o;
             if (s.startsWith("\\u") && s.length() == 6)
             {
                 // unicode char
                 int i = Integer.parseInt(s.substring(2), 16);
                 c = new Character((char) i);
             }
             else
             { // use the first character of the string
                 char ch = s.charAt(0);
                 c = new Character(ch);
             }
         }
         else
         { // throw exception
             throw new org.webmacro.PropertyException(
                     "$Type.toChar() is unable to convert the supplied value to a Character." + 
                     "  The argument"
                     + " must be a number or a String.  The supplied argument was "
                     + o + " of type " + o.getClass().getName());
         }
         return c;
     }
 
     public static Byte toByte (java.lang.Object o)
     {
         if (o instanceof Byte) return (Byte) o;
         Byte v = null;
         try
         {
             int i = Integer.parseInt(o.toString());
             v = new Byte((byte) i);
         }
         catch (Exception e)
         {
             throw new IllegalArgumentException("Not a valid byte: " + 
                     ((o == null) ? "null" : 
                         (o.toString() + "; type=" + o.getClass().getName())));
         }
         return v;
     }
 
     public static Short toShort (java.lang.Object o)
     {
         if (o instanceof Short) return (Short) o;
         Short v = null;
         try
         {
             int i = Integer.parseInt(o.toString());
             v = new Short((short) i);
         }
         catch (Exception e)
         {
             throw new IllegalArgumentException("Not a valid short: " + 
                     ((o == null) ? "null" : 
                         (o.toString() + "; type=" + o.getClass().getName())));
         }
         return v;
     }
 
     public static Integer toInt (java.lang.Object o)
     {
         Integer i = null;
         if (o instanceof Integer) return (Integer) o;
         try
         {
             i = new Integer(o.toString());
         }
         catch (Exception e)
         {
             throw new IllegalArgumentException(
                     "Not a valid int: " + 
                     ((o == null) ? "null" : 
                         (o.toString() + "; type=" + o.getClass().getName())));
         }
         return i;
     }
 
     public static Long toLong (java.lang.Object o)
     {
         Long l = null;
         if (o instanceof Long) return (Long) o;
         try
         {
             l = new Long(o.toString());
         }
         catch (Exception e)
         {
             throw new IllegalArgumentException("Not a valid long: " + 
                     ((o == null) ? "null" : 
                         (o.toString() + "; type=" + o.getClass().getName())));
         }
         return l;
     }
 
     public static Float toFloat (java.lang.Object o)
     {
         Float f = null;
         if (o instanceof Float) return (Float) o;
         try
         {
             f = new Float(o.toString());
         }
         catch (Exception e)
         {
             throw new IllegalArgumentException(
                     "Not a valid float: " + ((o == null) ? "null" : 
                         (o.toString() + "; type=" + o.getClass().getName())));
         }
         return f;
     }
 
     public static Double toDouble (java.lang.Object o)
     {
         Double d = null;
         if (o instanceof Double) return (Double) o;
         try
         {
             d = new Double(o.toString());
         }
         catch (Exception e)
         {
             throw new IllegalArgumentException(
                     "Not a valid double: " + ((o == null) ? "null" : 
                         (o.toString() + "; type=" + o.getClass().getName())));
         }
         return d;
     }
 
     public static String toString(java.lang.Object o) {
             return (o != null ? o.toString() : null);
     }
 
     static public void main (String[] args)
     {
         println("77"
                 + test(BOOLEAN, "77")
                 + test(CHAR, "77")
                 + test(BYTE, "77")
                 + test(SHORT, "77")
                 + test(INTEGER, "77")
                 + test(LONG, "77")
                 + test(FLOAT, "77")
                 + test(DOUBLE, "77")
                 + ".");
         println("true: " + test(BOOLEAN, "true") + ".");
         println("FalSE: " + test(BOOLEAN, "FalSE") + ".");
         println("null: " + test(BOOLEAN, null) + ".");
     }
 
     static private void println (String s)
     {
         System.out.println(s);
     }
 
     final static public int BOOLEAN = 1;
     final static public int CHAR = 2;
     final static public int BYTE = 3;
     final static public int SHORT = 4;
     final static public int INTEGER = 5;
     final static public int LONG = 6;
     final static public int FLOAT = 7;
     final static public int DOUBLE = 8;
 
     static private String test (int type, Object val)
     {
         String s = null;
         try
         {
             Object o = null;
             switch (type)
             {
                 case BOOLEAN:
                     o = toBoolean(val);
                     break;
                 case CHAR:
                     o = toChar(val);
                     break;
                 case BYTE:
                     o = toByte(val);
                     break;
                 case SHORT:
                     o = toShort(val);
                     break;
                 case INTEGER:
                     o = toInt(val);
                     break;
                 case LONG:
                     o = toLong(val);
                     break;
                 case FLOAT:
                     o = toFloat(val);
                     break;
                 case DOUBLE:
                     o = toDouble(val);
                     break;
                 default:
                     throw new IllegalArgumentException("Unknown type: " + type);
             }
             s = ", " + o + " (" + o.getClass().getName() + ")";
         }
         catch (Exception e)
         {
             e.printStackTrace();
         }
         return s;
     }
 
 }

1		/*
2		* Copyright (C) 1998-2000 Semiotek Inc. All Rights Reserved.
3		*
4		* Redistribution and use in source and binary forms, with or without
5		* modification, are permitted under the terms of either of the following
6		* Open Source licenses:
7		*
8		* The GNU General Public License, version 2, or any later version, as
9		* published by the Free Software Foundation
10		* (http://www.fsf.org/copyleft/gpl.html);
11		*
12		* or
13		*
14		* The Semiotek Public License (http://webmacro.org/LICENSE.)
15		*
16		* This software is provided "as is", with NO WARRANTY, not even the
17		* implied warranties of fitness to purpose, or merchantability. You
18		* assume all risks and liabilities associated with its use.
19		*
20		* See www.webmacro.org for more information on the WebMacro project.
21		*/
22		package org.webmacro.util;
23
24		/**
25		* A singleton for casting one type to another.
26		*
27		* @author keats_kirsch
28		* @since 0.96
29		*/
30		public final class CastUtil
31		{
32
33	40	static private CastUtil _singleton = new CastUtil();
34
35		/** private constructor for singleton */
36		private CastUtil ()
37	40	{
38	40	}
39
40		public static CastUtil getInstance ()
41		{
42	0	return _singleton;
43		}
44
45		public static Boolean toBoolean (java.lang.Object o)
46		{
47	0	if (o == null) return Boolean.FALSE;
48	0	return Boolean.valueOf(o.toString());
49		}
50
51		public static Character toChar (Object o) throws org.webmacro.PropertyException
52		{
53	0	Character c = null;
54	0	if (o == null \|\| o == "") return null;
55	0	if (o instanceof Character) return (Character) o;
56	0	if (o instanceof Number)
57		{
58		try
59		{
60	0	c = new Character((char) ((Number) o).intValue());
61		}
62	0	catch (Exception e)
63		{
64	0	throw new IllegalArgumentException(
65		"Not a valid char: " +
66		o.toString() + "; type=" + o.getClass().getName());
67	0	}
68		}
69	0	else if (o instanceof String)
70		{
71	0	String s = (String) o;
72	0	if (s.startsWith("\\u") && s.length() == 6)
73		{
74		// unicode char
75	0	int i = Integer.parseInt(s.substring(2), 16);
76	0	c = new Character((char) i);
77	0	}
78		else
79		{ // use the first character of the string
80	0	char ch = s.charAt(0);
81	0	c = new Character(ch);
82		}
83	0	}
84		else
85		{ // throw exception
86	0	throw new org.webmacro.PropertyException(
87		"$Type.toChar() is unable to convert the supplied value to a Character." +
88		" The argument"
89		+ " must be a number or a String. The supplied argument was "
90		+ o + " of type " + o.getClass().getName());
91		}
92	0	return c;
93		}
94
95		public static Byte toByte (java.lang.Object o)
96		{
97	0	if (o instanceof Byte) return (Byte) o;
98	0	Byte v = null;
99		try
100		{
101	0	int i = Integer.parseInt(o.toString());
102	0	v = new Byte((byte) i);
103		}
104	0	catch (Exception e)
105		{
106	0	throw new IllegalArgumentException("Not a valid byte: " +
107		((o == null) ? "null" :
108		(o.toString() + "; type=" + o.getClass().getName())));
109	0	}
110	0	return v;
111		}
112
113		public static Short toShort (java.lang.Object o)
114		{
115	0	if (o instanceof Short) return (Short) o;
116	0	Short v = null;
117		try
118		{
119	0	int i = Integer.parseInt(o.toString());
120	0	v = new Short((short) i);
121		}
122	0	catch (Exception e)
123		{
124	0	throw new IllegalArgumentException("Not a valid short: " +
125		((o == null) ? "null" :
126		(o.toString() + "; type=" + o.getClass().getName())));
127	0	}
128	0	return v;
129		}
130
131		public static Integer toInt (java.lang.Object o)
132		{
133	0	Integer i = null;
134	0	if (o instanceof Integer) return (Integer) o;
135		try
136		{
137	0	i = new Integer(o.toString());
138		}
139	0	catch (Exception e)
140		{
141	0	throw new IllegalArgumentException(
142		"Not a valid int: " +
143		((o == null) ? "null" :
144		(o.toString() + "; type=" + o.getClass().getName())));
145	0	}
146	0	return i;
147		}
148
149		public static Long toLong (java.lang.Object o)
150		{
151	0	Long l = null;
152	0	if (o instanceof Long) return (Long) o;
153		try
154		{
155	0	l = new Long(o.toString());
156		}
157	0	catch (Exception e)
158		{
159	0	throw new IllegalArgumentException("Not a valid long: " +
160		((o == null) ? "null" :
161		(o.toString() + "; type=" + o.getClass().getName())));
162	0	}
163	0	return l;
164		}
165
166		public static Float toFloat (java.lang.Object o)
167		{
168	0	Float f = null;
169	0	if (o instanceof Float) return (Float) o;
170		try
171		{
172	0	f = new Float(o.toString());
173		}
174	0	catch (Exception e)
175		{
176	0	throw new IllegalArgumentException(
177		"Not a valid float: " + ((o == null) ? "null" :
178		(o.toString() + "; type=" + o.getClass().getName())));
179	0	}
180	0	return f;
181		}
182
183		public static Double toDouble (java.lang.Object o)
184		{
185	0	Double d = null;
186	0	if (o instanceof Double) return (Double) o;
187		try
188		{
189	0	d = new Double(o.toString());
190		}
191	0	catch (Exception e)
192		{
193	0	throw new IllegalArgumentException(
194		"Not a valid double: " + ((o == null) ? "null" :
195		(o.toString() + "; type=" + o.getClass().getName())));
196	0	}
197	0	return d;
198		}
199
200		public static String toString(java.lang.Object o) {
201	0	return (o != null ? o.toString() : null);
202		}
203
204		static public void main (String[] args)
205		{
206	0	println("77"
207		+ test(BOOLEAN, "77")
208		+ test(CHAR, "77")
209		+ test(BYTE, "77")
210		+ test(SHORT, "77")
211		+ test(INTEGER, "77")
212		+ test(LONG, "77")
213		+ test(FLOAT, "77")
214		+ test(DOUBLE, "77")
215		+ ".");
216	0	println("true: " + test(BOOLEAN, "true") + ".");
217	0	println("FalSE: " + test(BOOLEAN, "FalSE") + ".");
218	0	println("null: " + test(BOOLEAN, null) + ".");
219	0	}
220
221		static private void println (String s)
222		{
223	0	System.out.println(s);
224	0	}
225
226		final static public int BOOLEAN = 1;
227		final static public int CHAR = 2;
228		final static public int BYTE = 3;
229		final static public int SHORT = 4;
230		final static public int INTEGER = 5;
231		final static public int LONG = 6;
232		final static public int FLOAT = 7;
233		final static public int DOUBLE = 8;
234
235		static private String test (int type, Object val)
236		{
237	0	String s = null;
238		try
239		{
240	0	Object o = null;
241	0	switch (type)
242		{
243		case BOOLEAN:
244	0	o = toBoolean(val);
245	0	break;
246		case CHAR:
247	0	o = toChar(val);
248	0	break;
249		case BYTE:
250	0	o = toByte(val);
251	0	break;
252		case SHORT:
253	0	o = toShort(val);
254	0	break;
255		case INTEGER:
256	0	o = toInt(val);
257	0	break;
258		case LONG:
259	0	o = toLong(val);
260	0	break;
261		case FLOAT:
262	0	o = toFloat(val);
263	0	break;
264		case DOUBLE:
265	0	o = toDouble(val);
266	0	break;
267		default:
268	0	throw new IllegalArgumentException("Unknown type: " + type);
269		}
270	0	s = ", " + o + " (" + o.getClass().getName() + ")";
271		}
272	0	catch (Exception e)
273		{
274	0	e.printStackTrace();
275	0	}
276	0	return s;
277		}
278
279		}