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Jodd BeanUtil is fast and powerful bean manipulation library.
// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// 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.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS 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 COPYRIGHT HOLDER OR 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.
package jodd.typeconverter.impl;
import jodd.typeconverter.TypeConversionException;
import jodd.typeconverter.TypeConverter;
import jodd.util.StringUtil;
/**
* Converts given object to Character
.
* Conversion rules:
*
* null
value is returned as null
* - object of destination type is simply casted
* Number
is converted to char
value
* - finally,
toString()
value of length 1 is converted to char
* - if string is longer, and made of digits, try to convert it to int first
*
*/
public class CharacterConverter implements TypeConverter {
public Character convert(final Object value) {
if (value == null) {
return null;
}
if (value.getClass() == Character.class) {
return (Character) value;
}
if (value instanceof Number) {
char c = (char) ((Number) value).intValue();
return Character.valueOf(c);
}
try {
String s = value.toString();
if (s.length() != 1) {
s = s.trim();
if (!StringUtil.containsOnlyDigitsAndSigns(s)) {
throw new TypeConversionException(value);
}
try {
char c = (char) Integer.parseInt(s);
return Character.valueOf(c);
} catch (NumberFormatException nfex) {
throw new TypeConversionException(value, nfex);
}
}
return Character.valueOf(s.charAt(0));
} catch (IndexOutOfBoundsException ioobex) {
throw new TypeConversionException(value, ioobex);
}
}
}