infra.beans.propertyeditors.ClassEditor Maven / Gradle / Ivy
/*
* Copyright 2017 - 2024 the original author or authors.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see [https://www.gnu.org/licenses/]
*/
package infra.beans.propertyeditors;
import java.beans.PropertyEditorSupport;
import infra.lang.Nullable;
import infra.util.ClassUtils;
import infra.util.StringUtils;
/**
* Property editor for {@link 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.
*
* 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
* @see Class#forName
* @see ClassUtils#forName(String, ClassLoader)
* @since 4.0
*/
public class ClassEditor extends PropertyEditorSupport {
@Nullable
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(@Nullable ClassLoader classLoader) {
this.classLoader = (classLoader != null ? classLoader : ClassUtils.getDefaultClassLoader());
}
@Override
public void setAsText(String text) throws IllegalArgumentException {
if (StringUtils.hasText(text)) {
setValue(ClassUtils.resolveClassName(text.trim(), this.classLoader));
}
else {
setValue(null);
}
}
@Override
public String getAsText() {
Class clazz = (Class) getValue();
if (clazz != null) {
return ClassUtils.getQualifiedName(clazz);
}
else {
return "";
}
}
}