Example usage for org.springframework.beans.factory.config InstantiationAwareBeanPostProcessor postProcessBeforeInstantiation

Introduction

In this page you can find the example usage for org.springframework.beans.factory.config InstantiationAwareBeanPostProcessor postProcessBeforeInstantiation.

Prototype

@Nullable
default Object postProcessBeforeInstantiation(Class<?> beanClass, String beanName) throws BeansException 

Source Link

Document

Apply this BeanPostProcessor before the target bean gets instantiated.

Usage

From source file:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.java

/**
 * Apply InstantiationAwareBeanPostProcessors to the specified bean definition
 * (by class and name), invoking their {@code postProcessBeforeInstantiation} methods.
 * <p>Any returned object will be used as the bean instead of actually instantiating
 * the target bean. A {@code null} return value from the post-processor will
 * result in the target bean being instantiated.
 * @param beanClass the class of the bean to be instantiated
 * @param beanName the name of the bean/*from ww  w . java 2 s  .c om*/
 * @return the bean object to use instead of a default instance of the target bean, or {@code null}
 * @see InstantiationAwareBeanPostProcessor#postProcessBeforeInstantiation
 */
@Nullable
protected Object applyBeanPostProcessorsBeforeInstantiation(Class<?> beanClass, String beanName) {
    for (BeanPostProcessor bp : getBeanPostProcessors()) {
        if (bp instanceof InstantiationAwareBeanPostProcessor) {
            InstantiationAwareBeanPostProcessor ibp = (InstantiationAwareBeanPostProcessor) bp;
            Object result = ibp.postProcessBeforeInstantiation(beanClass, beanName);
            if (result != null) {
                return result;
            }
        }
    }
    return null;
}

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