/**
* OpenSpotLight - Open Source IT Governance Platform
*
* Copyright (c) 2009, CARAVELATECH CONSULTORIA E TECNOLOGIA EM INFORMATICA LTDA
* or third-party contributors as indicated by the @author tags or express
* copyright attribution statements applied by the authors. All third-party
* contributions are distributed under license by CARAVELATECH CONSULTORIA E
* TECNOLOGIA EM INFORMATICA LTDA.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
***********************************************************************
* OpenSpotLight - Plataforma de Governança de TI de Código Aberto
*
* Direitos Autorais Reservados (c) 2009, CARAVELATECH CONSULTORIA E TECNOLOGIA
* EM INFORMATICA LTDA ou como contribuidores terceiros indicados pela etiqueta
* @author ou por expressa atribuição de direito autoral declarada e atribuída pelo autor.
* Todas as contribuições de terceiros estão distribuídas sob licença da
* CARAVELATECH CONSULTORIA E TECNOLOGIA EM INFORMATICA LTDA.
*
* Este programa é software livre; você pode redistribuí-lo e/ou modificá-lo sob os
* termos da Licença Pública Geral Menor do GNU conforme publicada pela Free Software
* Foundation.
*
* Este programa é distribuído na expectativa de que seja útil, porém, SEM NENHUMA
* GARANTIA; nem mesmo a garantia implícita de COMERCIABILIDADE OU ADEQUAÇÃO A UMA
* FINALIDADE ESPECÍFICA. Consulte a Licença Pública Geral Menor do GNU para mais detalhes.
*
* Você deve ter recebido uma cópia da Licença Pública Geral Menor do GNU junto com este
* programa; se não, escreva para:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.openspotlight.common.util;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.text.MessageFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.beanutils.Converter;
import org.apache.commons.beanutils.converters.BigDecimalConverter;
import org.apache.commons.beanutils.converters.BigIntegerConverter;
import org.apache.commons.beanutils.converters.BooleanConverter;
import org.apache.commons.beanutils.converters.ByteConverter;
import org.apache.commons.beanutils.converters.CharacterConverter;
import org.apache.commons.beanutils.converters.DoubleConverter;
import org.apache.commons.beanutils.converters.FloatConverter;
import org.apache.commons.beanutils.converters.IntegerConverter;
import org.apache.commons.beanutils.converters.LongConverter;
import org.apache.commons.beanutils.converters.ShortConverter;
import org.openspotlight.common.exception.SLException;
import org.openspotlight.common.exception.SLRuntimeException;
/**
* Utility conversion class based on PrimitiveOrWrapperConverter from Dozer project http://dozer.sourceforge.net/
*
* @author Luiz Fernando Teston - feu.teston@caravelatech.com
*/
public class Conversion {
/**
* Internal map of types and converters.
*/
private static final Map<Class<?>, Converter> CONVERTERS = new HashMap<Class<?>, Converter>();
private static final Map<String, Class<?>> PRIMITIVE_TYPES = new HashMap<String, Class<?>>();
/**
* Should not be instantiated
*/
private Conversion() {
Exceptions.logAndThrow(new IllegalStateException(Messages.getString("invalidConstructor"))); //$NON-NLS-1$
}
static {
Conversion.PRIMITIVE_TYPES.put("int", int.class);
Conversion.PRIMITIVE_TYPES.put("double", double.class);
Conversion.PRIMITIVE_TYPES.put("short", short.class);
Conversion.PRIMITIVE_TYPES.put("char", char.class);
Conversion.PRIMITIVE_TYPES.put("long", long.class);
Conversion.PRIMITIVE_TYPES.put("boolean", boolean.class);
Conversion.PRIMITIVE_TYPES.put("byte", byte.class);
Conversion.PRIMITIVE_TYPES.put("float", float.class);
}
static {
Conversion.CONVERTERS.put(Integer.class, new IntegerConverter());
Conversion.CONVERTERS.put(Double.class, new DoubleConverter());
Conversion.CONVERTERS.put(Short.class, new ShortConverter());
Conversion.CONVERTERS.put(Character.class, new CharacterConverter());
Conversion.CONVERTERS.put(Long.class, new LongConverter());
Conversion.CONVERTERS.put(Boolean.class, new BooleanConverter());
Conversion.CONVERTERS.put(Byte.class, new ByteConverter());
Conversion.CONVERTERS.put(Float.class, new FloatConverter());
Conversion.CONVERTERS.put(Date.class, new Converter() {
@Override
public Object convert(final Class type,
final Object value) {
try {
if (type.equals(Date.class) && value instanceof String
&& ((String) value).isEmpty() == false) {
final String newValue = (String) value;
return new Date(Long.parseLong(newValue));
}
} catch (final Exception e) {
throw Exceptions.logAndReturn(new IllegalStateException(e));
}
throw Exceptions.logAndReturn(new IllegalArgumentException());
}
});
Conversion.CONVERTERS.put(String.class, new Converter() {
@Override
public Object convert(final Class type,
final Object value) {
try {
if (value == null) {
return null;
}
if (type.equals(String.class) && value instanceof Date) {
return Long.toString(((Date) value).getTime());
}
if (type.equals(String.class) && value instanceof Class) {
return ((Class) value).getName();
}
if (type.equals(String.class) && value instanceof byte[]) {
return new String((byte[]) value);
}
return value.toString();
} catch (final Exception e) {
throw Exceptions.logAndReturn(new IllegalStateException(e));
}
}
});
Conversion.CONVERTERS.put(int.class, new IntegerConverter());
Conversion.CONVERTERS.put(double.class, new DoubleConverter());
Conversion.CONVERTERS.put(short.class, new ShortConverter());
Conversion.CONVERTERS.put(char.class, new CharacterConverter());
Conversion.CONVERTERS.put(long.class, new LongConverter());
Conversion.CONVERTERS.put(boolean.class, new BooleanConverter());
Conversion.CONVERTERS.put(byte.class, new ByteConverter());
Conversion.CONVERTERS.put(float.class, new FloatConverter());
Conversion.CONVERTERS.put(BigDecimal.class, new BigDecimalConverter());
Conversion.CONVERTERS.put(BigInteger.class, new BigIntegerConverter());
Conversion.CONVERTERS.put(Class.class, new Converter() {
@Override
public Object convert(final Class type,
final Object value) {
try {
if (type.equals(Class.class) && value instanceof String) {
String newValue = (String) value;
if (newValue.startsWith("class ")) {
newValue = Strings.removeBegginingFrom("class ", newValue);
}
return Class.forName(newValue);
}
} catch (final Exception e) {
throw Exceptions.logAndReturn(new IllegalStateException(e));
}
throw Exceptions.logAndReturn(new IllegalArgumentException());
}
});
}
/**
* Returns a new converted type based on target type parameter.
*
* @param <E>
* @param rawValue
* @param targetType
* @return a new value from a converted type
* @throws SLException
*/
@SuppressWarnings("unchecked")
public static <E> E convert(final Object rawValue,
final Class<E> targetType) {
Assertions.checkNotNull("targetType", targetType); //$NON-NLS-1$
Assertions
.checkCondition(
"validTargetType:" + targetType.getName(), Conversion.CONVERTERS.containsKey(targetType) || targetType.isEnum()); //$NON-NLS-1$
if (rawValue == null) { return null; }
try {
if (targetType.isEnum()) {
final String rawValueAsString = rawValue.toString();
final Field[] flds = targetType.getDeclaredFields();
for (final Field f: flds) {
if (f.isEnumConstant()) {
if (f.getName().equals(rawValueAsString)) {
final Object value = f.get(null);
return (E) value;
}
}
}
throw new IllegalStateException(MessageFormat.format("Invalid enum constant:{0} for type {1}", rawValueAsString,
targetType));
}
final Converter converter = Conversion.CONVERTERS.get(targetType);
final E converted = (E) converter.convert(targetType, rawValue);
return converted;
} catch (final Exception e) {
throw Exceptions.logAndReturnNew(e, SLRuntimeException.class);
}
}
public static Class<?> getPrimitiveClass(final String name) {
return Conversion.PRIMITIVE_TYPES.get(name);
}
}