Spring Framework example source code file (BeanInfoTests.java)

This example Spring Framework source code file (BeanInfoTests.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, beanwrapperimpl, fatalbeanexception, illegalargumentexception, integer, integer, javabean, jdk, mynumbereditor, mynumbereditor, propertydescriptor, propertydescriptor, target, testcase, valuebean, valuebean

The Spring Framework BeanInfoTests.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.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.beans.SimpleBeanInfo;

import junit.framework.TestCase;

import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;
import org.springframework.beans.FatalBeanException;
import org.springframework.core.JdkVersion;
import org.springframework.util.Assert;

/**
 * @author Juergen Hoeller
 * @since 06.03.2006
 */
public class BeanInfoTests extends TestCase {

	public void testComplexObject() {
		ValueBean bean = new ValueBean();
		BeanWrapper bw = new BeanWrapperImpl(bean);
		Integer value = new Integer(1);

		bw.setPropertyValue("value", value);
		assertEquals("value not set correctly", bean.getValue(), value);

		value = new Integer(2);
		bw.setPropertyValue("value", value.toString());
		assertEquals("value not converted", bean.getValue(), value);

		bw.setPropertyValue("value", null);
		assertNull("value not null", bean.getValue());

		bw.setPropertyValue("value", "");
		assertNull("value not converted to null", bean.getValue());
	}


	public static class ValueBean {

		private Integer value;

		public Integer getValue() {
			return value;
		}

		public void setValue(Integer value) {
			this.value = value;
		}
	}


	public static class ValueBeanBeanInfo extends SimpleBeanInfo {

		public PropertyDescriptor[] getPropertyDescriptors() {
			try {
				PropertyDescriptor pd = new PropertyDescriptor("value", ValueBean.class);
				pd.setPropertyEditorClass(MyNumberEditor.class);
				return new PropertyDescriptor[] {pd};
			}
			catch (IntrospectionException ex) {
				throw new FatalBeanException("Couldn't create PropertyDescriptor", ex);
			}
		}
	}


	public static class MyNumberEditor extends CustomNumberEditor {

		private Object target;

		public MyNumberEditor() throws IllegalArgumentException {
			super(Integer.class, true);
		}

		public MyNumberEditor(Object target) throws IllegalArgumentException {
			super(Integer.class, true);
			this.target = target;
		}

		public void setAsText(String text) throws IllegalArgumentException {
			if (JdkVersion.getMajorJavaVersion() >= JdkVersion.JAVA_15) {
				Assert.isTrue(this.target instanceof ValueBean, "Target must be available on JDK 1.5+");
			}
			super.setAsText(text);
		}

	}

}