org.springframework.beans.TypeConverterSupport Maven / Gradle / Ivy
/*
* 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
*
* https://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 convertIfNecessary(Object value, Class requiredType) throws TypeMismatchException {
return doConvert(value, requiredType, null, null);
}
@Override
public T convertIfNecessary(Object value, Class requiredType, MethodParameter methodParam)
throws TypeMismatchException {
return doConvert(value, requiredType, methodParam, null);
}
@Override
public T convertIfNecessary(Object value, Class requiredType, Field field)
throws TypeMismatchException {
return doConvert(value, requiredType, null, field);
}
private T doConvert(Object value, Class 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);
}
}
}