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package org.mule.util; |
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import java.math.BigDecimal; |
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import java.math.BigInteger; |
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16 | 0 | public class NumberUtils extends org.apache.commons.lang.math.NumberUtils |
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{ |
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public static final int INTEGER_ERROR = -999999999; |
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public static final long LONG_ERROR = -999999999; |
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public static final float FLOAT_ERROR = -999999999; |
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public static final double DOUBLE_ERROR = -999999999; |
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|
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public static long toLong(Object obj) |
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{ |
25 | 0 | if (obj == null) |
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{ |
27 | 0 | throw new IllegalArgumentException("Unable to convert null object to long"); |
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} |
29 | 0 | else if (obj instanceof String) |
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{ |
31 | 0 | return toLong((String) obj); |
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} |
33 | 0 | else if (obj instanceof Number) |
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{ |
35 | 0 | return ((Number) obj).longValue(); |
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} |
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else |
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{ |
39 | 0 | throw new IllegalArgumentException("Unable to convert object of type: " |
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+ obj.getClass().getName() + " to long."); |
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} |
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} |
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public static int toInt(Object obj) |
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{ |
46 | 0 | if (obj == null) |
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{ |
48 | 0 | throw new IllegalArgumentException("Unable to convert null object to int"); |
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} |
50 | 0 | else if (obj instanceof String) |
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{ |
52 | 0 | return toInt((String) obj); |
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} |
54 | 0 | else if (obj instanceof Number) |
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{ |
56 | 0 | return ((Number) obj).intValue(); |
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} |
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else |
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{ |
60 | 0 | throw new IllegalArgumentException("Unable to convert object of type: " |
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+ obj.getClass().getName() + " to int."); |
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} |
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} |
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public static float toFloat(Object obj) |
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{ |
67 | 0 | if (obj == null) |
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{ |
69 | 0 | throw new IllegalArgumentException("Unable to convert null object to float"); |
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} |
71 | 0 | else if (obj instanceof String) |
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{ |
73 | 0 | return toFloat((String) obj); |
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} |
75 | 0 | else if (obj instanceof Number) |
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{ |
77 | 0 | return ((Number) obj).floatValue(); |
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} |
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else |
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{ |
81 | 0 | throw new IllegalArgumentException("Unable to convert object of type: " |
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+ obj.getClass().getName() + " to float."); |
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} |
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} |
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public static double toDouble(Object obj) |
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{ |
88 | 0 | if (obj == null) |
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{ |
90 | 0 | throw new IllegalArgumentException("Unable to convert null object to double"); |
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} |
92 | 0 | else if (obj instanceof String) |
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{ |
94 | 0 | return toDouble((String) obj); |
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} |
96 | 0 | else if (obj instanceof Number) |
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{ |
98 | 0 | return ((Number) obj).doubleValue(); |
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} |
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else |
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{ |
102 | 0 | throw new IllegalArgumentException("Unable to convert object of type: " |
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+ obj.getClass().getName() + " to double."); |
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} |
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} |
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public static int toInt(String str) |
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{ |
109 | 0 | return toInt(str, INTEGER_ERROR); |
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} |
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public static long toLong(String str) |
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{ |
114 | 0 | return toLong(str, LONG_ERROR); |
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} |
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public static float toFloat(String str) |
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{ |
119 | 0 | return toFloat(str, FLOAT_ERROR); |
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} |
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public static double toDouble(String str) |
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{ |
124 | 0 | return toDouble(str, DOUBLE_ERROR); |
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} |
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@SuppressWarnings("unchecked") |
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public static <T extends Number> T parseNumber(String text, Class<T> targetClass) |
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{ |
134 | 0 | text = text.trim(); |
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|
136 | 0 | if (targetClass.equals(Byte.class)) |
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{ |
138 | 0 | return (T) Byte.valueOf(text); |
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} |
140 | 0 | else if (targetClass.equals(Short.class)) |
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{ |
142 | 0 | return (T) Short.valueOf(text); |
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} |
144 | 0 | else if (targetClass.equals(Integer.class)) |
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{ |
146 | 0 | return (T) Integer.valueOf(text); |
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} |
148 | 0 | else if (targetClass.equals(Long.class)) |
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{ |
150 | 0 | return (T) Long.valueOf(text); |
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} |
152 | 0 | else if (targetClass.equals(BigInteger.class)) |
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{ |
154 | 0 | return (T) new BigInteger(text); |
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} |
156 | 0 | else if (targetClass.equals(Float.class)) |
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{ |
158 | 0 | return (T) Float.valueOf(text); |
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} |
160 | 0 | else if (targetClass.equals(Double.class)) |
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{ |
162 | 0 | return (T) Double.valueOf(text); |
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} |
164 | 0 | else if (targetClass.equals(BigDecimal.class) || targetClass.equals(Number.class)) |
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{ |
166 | 0 | return (T) new BigDecimal(text); |
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} |
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else |
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{ |
170 | 0 | throw new IllegalArgumentException("Cannot convert String [" + text + "] to target class [" |
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+ targetClass.getName() + "]"); |
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} |
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} |
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@SuppressWarnings("unchecked") |
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public static <T extends Number> T convertNumberToTargetClass(Number number, Class<T> targetClass) |
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throws IllegalArgumentException |
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{ |
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|
180 | 0 | if (targetClass.isInstance(number)) |
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{ |
182 | 0 | return (T) number; |
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} |
184 | 0 | else if (targetClass.equals(Byte.class)) |
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{ |
186 | 0 | long value = number.longValue(); |
187 | 0 | if (value < Byte.MIN_VALUE || value > Byte.MAX_VALUE) |
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{ |
189 | 0 | raiseOverflowException(number, targetClass); |
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} |
191 | 0 | return (T) new Byte(number.byteValue()); |
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} |
193 | 0 | else if (targetClass.equals(Short.class)) |
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{ |
195 | 0 | long value = number.longValue(); |
196 | 0 | if (value < Short.MIN_VALUE || value > Short.MAX_VALUE) |
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{ |
198 | 0 | raiseOverflowException(number, targetClass); |
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} |
200 | 0 | return (T) new Short(number.shortValue()); |
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} |
202 | 0 | else if (targetClass.equals(Integer.class)) |
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{ |
204 | 0 | long value = number.longValue(); |
205 | 0 | if (value < Integer.MIN_VALUE || value > Integer.MAX_VALUE) |
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{ |
207 | 0 | raiseOverflowException(number, targetClass); |
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} |
209 | 0 | return (T) new Integer(number.intValue()); |
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} |
211 | 0 | else if (targetClass.equals(Long.class)) |
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{ |
213 | 0 | return (T) new Long(number.longValue()); |
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} |
215 | 0 | else if (targetClass.equals(BigInteger.class)) |
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{ |
217 | 0 | if (number instanceof BigDecimal) |
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{ |
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|
220 | 0 | return (T) ((BigDecimal) number).toBigInteger(); |
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} |
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else |
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{ |
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225 | 0 | return (T) BigInteger.valueOf(number.longValue()); |
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} |
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} |
228 | 0 | else if (targetClass.equals(Float.class)) |
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{ |
230 | 0 | return (T) new Float(number.floatValue()); |
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} |
232 | 0 | else if (targetClass.equals(Double.class)) |
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{ |
234 | 0 | return (T) new Double(number.doubleValue()); |
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} |
236 | 0 | else if (targetClass.equals(BigDecimal.class)) |
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{ |
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|
241 | 0 | return (T) new BigDecimal(number.toString()); |
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} |
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else |
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{ |
245 | 0 | throw new IllegalArgumentException("Could not convert number [" + number + "] of type [" |
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+ number.getClass().getName() + "] to unknown target class [" |
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+ targetClass.getName() + "]"); |
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} |
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} |
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private static void raiseOverflowException(Number number, Class targetClass) |
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{ |
259 | 0 | throw new IllegalArgumentException("Could not convert number [" + number + "] of type [" |
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+ number.getClass().getName() + "] to target class [" |
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+ targetClass.getName() + "]: overflow"); |
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} |
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} |