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/*
 * Copyright 2002-2017 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
 *
 *      https://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;

import java.beans.PropertyDescriptor;

/**
 * The central interface of Spring's low-level JavaBeans infrastructure.
 *
 * 

Typically not used directly but rather implicitly via a * {@link org.springframework.beans.factory.BeanFactory} or a * {@link org.springframework.validation.DataBinder}. * *

Provides operations to analyze and manipulate standard JavaBeans: * the ability to get and set property values (individually or in bulk), * get property descriptors, and query the readability/writability of properties. * *

This interface supports nested properties enabling the setting * of properties on subproperties to an unlimited depth. * *

A BeanWrapper's default for the "extractOldValueForEditor" setting * is "false", to avoid side effects caused by getter method invocations. * Turn this to "true" to expose present property values to custom editors. * * @author Rod Johnson * @author Juergen Hoeller * @since 13 April 2001 * @see PropertyAccessor * @see PropertyEditorRegistry * @see PropertyAccessorFactory#forBeanPropertyAccess * @see org.springframework.beans.factory.BeanFactory * @see org.springframework.validation.BeanPropertyBindingResult * @see org.springframework.validation.DataBinder#initBeanPropertyAccess() */ public interface BeanWrapper extends ConfigurablePropertyAccessor { /** * Specify a limit for array and collection auto-growing. *

Default is unlimited on a plain BeanWrapper. * @since 4.1 */ void setAutoGrowCollectionLimit(int autoGrowCollectionLimit); /** * Return the limit for array and collection auto-growing. * @since 4.1 */ int getAutoGrowCollectionLimit(); /** * Return the bean instance wrapped by this object. */ Object getWrappedInstance(); /** * Return the type of the wrapped bean instance. */ Class getWrappedClass(); /** * Obtain the PropertyDescriptors for the wrapped object * (as determined by standard JavaBeans introspection). * @return the PropertyDescriptors for the wrapped object */ PropertyDescriptor[] getPropertyDescriptors(); /** * Obtain the property descriptor for a specific property * of the wrapped object. * @param propertyName the property to obtain the descriptor for * (may be a nested path, but no indexed/mapped property) * @return the property descriptor for the specified property * @throws InvalidPropertyException if there is no such property */ PropertyDescriptor getPropertyDescriptor(String propertyName) throws InvalidPropertyException; }





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