Spring Framework example source code file (ClassEditor.java)

This example Spring Framework source code file (ClassEditor.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

bean, class, class, classeditor, classeditor, classloader, classloader, illegalargumentexception, javabean, propertyeditorsupport, string, string

The Spring Framework ClassEditor.java source code

/*
 * Copyright 2002-2006 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;

/**
 * Property editor for {@link java.lang.Class java.lang.Class}, to enable the direct
 * population of a <code>Class property without recourse to having to use a
 * String class name property as bridge.
 *
 * <p>Also supports "java.lang.String[]"-style array class names, in contrast to the
 * standard {@link Class#forName(String)} method.
 *
 * @author Juergen Hoeller
 * @author Rick Evans
 * @since 13.05.2003
 * @see java.lang.Class#forName
 * @see org.springframework.util.ClassUtils#forName(String, ClassLoader)
 */
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 <code>null for the thread context ClassLoader)
	 */
	public ClassEditor(ClassLoader classLoader) {
		this.classLoader =
				(classLoader != null ? classLoader : ClassUtils.getDefaultClassLoader());
	}


	public void setAsText(String text) throws IllegalArgumentException {
		if (StringUtils.hasText(text)) {
			setValue(ClassUtils.resolveClassName(text.trim(), this.classLoader));
		}
		else {
			setValue(null);
		}
	}

	public String getAsText() {
		Class clazz = (Class) getValue();
		if (clazz != null) {
			return ClassUtils.getQualifiedName(clazz);
		}
		else {
			return "";
		}
	}

}