/*
* Copyright 2002-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.beans;
import java.lang.reflect.
Field;
import org.springframework.core.
MethodParameter;
import org.springframework.core.convert.
ConversionException;
import org.springframework.core.convert.
ConverterNotFoundException;
/**
* Base implementation of the {@link TypeConverter} interface, using a package-private delegate.
* Mainly serves as base class for {@link BeanWrapperImpl}.
*
* @author Juergen Hoeller
* @since 3.2
* @see SimpleTypeConverter
*/
public abstract class
TypeConverterSupport extends
PropertyEditorRegistrySupport implements
TypeConverter {
TypeConverterDelegate typeConverterDelegate;
@
Override
public <T> T
convertIfNecessary(
Object value,
Class<T>
requiredType) throws
TypeMismatchException {
return
doConvert(
value,
requiredType, null, null);
}
@
Override
public <T> T
convertIfNecessary(
Object value,
Class<T>
requiredType,
MethodParameter methodParam)
throws
TypeMismatchException {
return
doConvert(
value,
requiredType,
methodParam, null);
}
@
Override
public <T> T
convertIfNecessary(
Object value,
Class<T>
requiredType,
Field field)
throws
TypeMismatchException {
return
doConvert(
value,
requiredType, null,
field);
}
private <T> T
doConvert(
Object value,
Class<T>
requiredType,
MethodParameter methodParam,
Field field)
throws
TypeMismatchException {
try {
if (
field != null) {
return this.
typeConverterDelegate.
convertIfNecessary(
value,
requiredType,
field);
}
else {
return this.
typeConverterDelegate.
convertIfNecessary(
value,
requiredType,
methodParam);
}
}
catch (
ConverterNotFoundException ex) {
throw new
ConversionNotSupportedException(
value,
requiredType,
ex);
}
catch (
ConversionException ex) {
throw new
TypeMismatchException(
value,
requiredType,
ex);
}
catch (
IllegalStateException ex) {
throw new
ConversionNotSupportedException(
value,
requiredType,
ex);
}
catch (
IllegalArgumentException ex) {
throw new
TypeMismatchException(
value,
requiredType,
ex);
}
}
}