Show Converter.java syntax highlighted
/*
* ====================================================================
*
* Frame2 Open Source License
*
* Copyright (c) 2004-2007 Megatome Technologies. 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
* Megatome Technologies."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Frame2 Project", and "Frame2",
* must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact iamthechad@sourceforge.net.
*
* 5. Products derived from this software may not be called "Frame2"
* nor may "Frame2" appear in their names without prior written
* permission of Megatome Technologies.
*
* 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 MEGATOME TECHNOLOGIES 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.
* ====================================================================
*/
package org.megatome.frame2.introspector;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.fileupload.FileItem;
import org.megatome.frame2.log.Logger;
import org.megatome.frame2.log.LoggerFactory;
/**
* The Converter class encapsulates the conversion of types for the purpose of
* the introspector's setting of properties.
*/
final class Converter {
private static final Logger LOGGER = LoggerFactory.instance(Converter.class.getName());
static private Map<Class<?>, TypeConverter> converterMap = new HashMap<Class<?>, TypeConverter>();
static {
converterMap.put(BigDecimal.class, new BigDecimalConverter());
converterMap.put(BigDecimal[].class, new BigDecimalConverter());
converterMap.put(BigInteger.class, new BigIntegerConverter());
converterMap.put(BigInteger[].class, new BigIntegerConverter());
converterMap.put(Boolean.TYPE, new BooleanConverter());
converterMap.put(Boolean.class, new BooleanConverter());
converterMap.put(Boolean[].class, new BooleanConverter());
converterMap.put(Byte.TYPE, new ByteConverter());
converterMap.put(Byte.class, new ByteConverter());
converterMap.put(Byte[].class, new ByteConverter());
converterMap.put(Character.TYPE, new CharacterConverter());
converterMap.put(Character.class, new CharacterConverter());
converterMap.put(Character[].class, new CharacterConverter());
converterMap.put(Double.TYPE, new DoubleConverter());
converterMap.put(Double.class, new DoubleConverter());
converterMap.put(Double[].class, new DoubleConverter());
converterMap.put(Float.TYPE, new FloatConverter());
converterMap.put(Float.class, new FloatConverter());
converterMap.put(Float[].class, new FloatConverter());
converterMap.put(Integer.TYPE, new IntegerConverter());
converterMap.put(Integer.class, new IntegerConverter());
converterMap.put(Integer[].class, new IntegerConverter());
converterMap.put(Long.TYPE, new LongConverter());
converterMap.put(Long.class, new LongConverter());
converterMap.put(Long[].class, new LongConverter());
converterMap.put(Short.TYPE, new ShortConverter());
converterMap.put(Short.class, new ShortConverter());
converterMap.put(Short[].class, new ShortConverter());
converterMap.put(StringBuffer.class, new StringBufferConverter());
converterMap.put(StringBuffer[].class, new StringBufferConverter());
converterMap.put(String.class, new StringConverter());
converterMap.put(String[].class, new StringConverter());
}
private Converter() { // Non-public ctor
}
static Object convertValueToType(Object value, Class<?> type) {
if ((value == null) || (type == null)) {
return null;
}
if (value.getClass() == type) {
return value;
}
if (value instanceof FileItem) {
return value;
}
String strValue = null;
if (value instanceof String) {
strValue = (String) value;
} else {
strValue = String.valueOf(value);
LOGGER.warn("Trying to convert from a non String type. Results may be varied."); //$NON-NLS-1$
}
TypeConverter converter = converterMap.get(type);
if (converter != null) {
return converter.convert(strValue);
}
return null;
}
static Object convertValueToArrayType(Object value, Class<?> type) {
if ((value == null) || (type == null)) {
return null;
}
if (value.getClass() == type) {
return value;
}
if (value instanceof FileItem) {
return new FileItem[] { (FileItem) value };
}
String strValue = null;
if (value instanceof String) {
strValue = (String) value;
} else {
throw new IllegalArgumentException(
"Conversion from non-string types not supported"); //$NON-NLS-1$
}
TypeConverter converter = converterMap.get(type);
if (converter != null) {
return converter.convertToArray(strValue);
}
return null;
}
static class StringConverter implements TypeConverter {
public Object convert(String fromString) {
return fromString;
}
public Object[] convertToArray(String fromString) {
return new String[] { fromString };
}
}
static class IntegerConverter implements TypeConverter {
public Object convert(String fromString) {
return new Integer(fromString.trim());
}
public Object[] convertToArray(String fromString) {
return new Integer[] { new Integer(fromString.trim()) };
}
}
static class StringBufferConverter implements TypeConverter {
public Object convert(String fromString) {
return new StringBuffer(fromString);
}
public Object[] convertToArray(String fromString) {
return new StringBuffer[] { new StringBuffer(fromString) };
}
}
static class FloatConverter implements TypeConverter {
public Object convert(String fromString) {
return new Float(fromString.trim());
}
public Object[] convertToArray(String fromString) {
return new Float[] { new Float(fromString.trim()) };
}
}
static class DoubleConverter implements TypeConverter {
public Object convert(String fromString) {
return new Double(fromString.trim());
}
public Object[] convertToArray(String fromString) {
return new Double[] { new Double(fromString.trim()) };
}
}
static class ByteConverter implements TypeConverter {
public Object convert(String fromString) {
return new Byte(fromString);
}
public Object[] convertToArray(String fromString) {
return new Byte[] { new Byte(fromString) };
}
}
static class CharacterConverter implements TypeConverter {
public Object convert(String fromString) {
return Character.valueOf(fromString.charAt(0));
}
public Object[] convertToArray(String fromString) {
return new Character[] { Character.valueOf(fromString.charAt(0)) };
}
}
static class ShortConverter implements TypeConverter {
public Object convert(String fromString) {
return new Short(fromString.trim());
}
public Object[] convertToArray(String fromString) {
return new Short[] { new Short(fromString.trim()) };
}
}
static class BooleanConverter implements TypeConverter {
public Object convert(String fromString) {
return Boolean.valueOf(fromString.trim());
}
public Object[] convertToArray(String fromString) {
return new Boolean[] { Boolean.valueOf(fromString.trim()) };
}
}
static class LongConverter implements TypeConverter {
public Object convert(String fromString) {
return new Long(fromString.trim());
}
public Object[] convertToArray(String fromString) {
return new Long[] { new Long(fromString.trim()) };
}
}
static class BigIntegerConverter implements TypeConverter {
public Object convert(String fromString) {
return new BigInteger(fromString.trim());
}
public Object[] convertToArray(String fromString) {
return new BigInteger[] { new BigInteger(fromString.trim()) };
}
}
static class BigDecimalConverter implements TypeConverter {
public Object convert(String fromString) {
return new BigDecimal(fromString.trim());
}
public Object[] convertToArray(String fromString) {
return new BigDecimal[] { new BigDecimal(fromString.trim()) };
}
}
}
See more files for this project here