/*******************************************************************************
* Copyright (c) 2012 Google, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Google, Inc. - initial API and implementation
*******************************************************************************/
package com.windowtester.runtime.internal.util;
import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
/**
* (Based on similar class from JMock)
*
* Utility class for accessing properties on JavaBean objects.
*
* See http://java.sun.com/products/javabeans/docs/index.html for
* more information on JavaBeans.
*/
public class PropertyUtil {
/**
* Returns the description of the property with the provided
* name on the provided object's interface.
* @return the description of the property, or null if the
* property does not exist.
*
* @throws IntrospectionException if an error occured using
* the JavaBean Introspector class to query the properties
* of the provided class.
*/
public static PropertyDescriptor getPropertyDescriptor(String propertyName, Object fromObj) throws IntrospectionException {
BeanInfo beanInfo = Introspector.getBeanInfo(fromObj.getClass());
PropertyDescriptor[] properties = beanInfo.getPropertyDescriptors();
for(int i=0; i < properties.length; i++) {
if(properties[i].getName().equals(propertyName)) {
return properties[i];
}
}
return null;
}
public static Method getReadMethod(String propertyName, Object argument) throws IntrospectionException {
PropertyDescriptor property = getPropertyDescriptor(propertyName, argument);
return property == null ? null : property.getReadMethod();
}
}