org.springframework.beans.propertyeditors.ClassEditor Maven / Gradle / Ivy
/*
* Copyright 2002-2005 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.propertyeditors;
import java.beans.PropertyEditorSupport;
import org.springframework.util.ClassUtils;
import org.springframework.util.StringUtils;
/**
* Editor for java.lang.Class
, to directly populate a Class property
* instead of using a String class name property as bridge.
*
* Also supports "java.lang.String[]"-style array class names,
* in contrast to the standard Class.forName
method.
* Delegates to ClassUtils for actual class name resolution.
*
* @author Juergen Hoeller
* @since 13.05.2003
* @see java.lang.Class#forName
* @see org.springframework.util.ClassUtils#forName
*/
public class ClassEditor extends PropertyEditorSupport {
private final ClassLoader classLoader;
/**
* Create a default ClassEditor, using the thread context ClassLoader.
*/
public ClassEditor() {
this(null);
}
/**
* Create a default ClassEditor, using the given ClassLoader.
* @param classLoader the ClassLoader to use
* (or null
for the thread context ClassLoader)
*/
public ClassEditor(ClassLoader classLoader) {
this.classLoader =
(classLoader != null ? classLoader : Thread.currentThread().getContextClassLoader());
}
public void setAsText(String text) throws IllegalArgumentException {
if (StringUtils.hasText(text)) {
try {
setValue(ClassUtils.forName(text.trim(), this.classLoader));
}
catch (ClassNotFoundException ex) {
throw new IllegalArgumentException("Class not found: " + ex.getMessage());
}
}
else {
setValue(null);
}
}
public String getAsText() {
Class clazz = (Class) getValue();
if (clazz == null) {
return "";
}
if (clazz.isArray()) {
return clazz.getComponentType().getName() + ClassUtils.ARRAY_SUFFIX;
}
else {
return clazz.getName();
}
}
}