org.springframework.binding.convert.ConversionExecutionException Maven / Gradle / Ivy
/*
* Copyright 2004-2012 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.binding.convert;
import org.springframework.core.style.StylerUtils;
/**
* Thrown when an attempt to execute a type conversion fails.
*
* @author Keith Donald
*/
public class ConversionExecutionException extends ConversionException {
/**
* The value we tried to convert. Transient because we cannot guarantee that the value is Serializable.
*/
private transient Object value;
/**
* The source type we tried to convert the value from.
*/
private Class sourceClass;
/**
* The target type we tried to convert the value to.
*/
private Class targetClass;
/**
* Creates a new conversion exception.
* @param value the value we tried to convert
* @param sourceClass the value's original type
* @param targetClass the value's target type
* @param cause the cause of the conversion failure
*/
public ConversionExecutionException(Object value, Class sourceClass, Class targetClass, Throwable cause) {
super(defaultMessage(value, sourceClass, targetClass, cause), cause);
this.value = value;
this.sourceClass = sourceClass;
this.targetClass = targetClass;
}
/**
* Creates a new conversion exception.
* @param value the value we tried to convert
* @param sourceClass the value's original type
* @param targetClass the value's target type
* @param message a descriptive message of what went wrong.
*/
public ConversionExecutionException(Object value, Class sourceClass, Class targetClass, String message) {
super(message);
this.value = value;
this.sourceClass = sourceClass;
this.targetClass = targetClass;
}
/**
* Returns the actual value we tried to convert, an instance of {@link #getSourceClass()}.
*/
public Object getValue() {
return value;
}
/**
* Returns the source type we tried to convert the value from.
*/
public Class getSourceClass() {
return sourceClass;
}
/**
* Returns the target type we tried to convert the value to.
*/
public Class getTargetClass() {
return targetClass;
}
private static String defaultMessage(Object value, Class sourceClass, Class targetClass, Throwable cause) {
return "Unable to convert value " + StylerUtils.style(value) + " from type '" + sourceClass.getName()
+ "' to type '" + targetClass.getName() + "'; reason = '" + cause.getMessage() + "'";
}
}