[Demonstration 1]

[Buggy Method]
@Override
protected Object[] getAdvicesAndAdvisorsForBean(final Class<?> beanClass, final String beanName, final TargetSource customTargetSource) throws BeansException {
    if (serviceBeanNames.contains(beanName) || shouldProxy(beanClass, beanName)) {
        return PROXY_WITHOUT_ADDITIONAL_INTERCEPTORS;
    }
    return DO_NOT_PROXY;
}

[Buggy Hunk]
if (serviceBeanNames.contains(beanName) || shouldProxy(beanClass, beanName)) {

[Patch]
if ( (serviceBeanNames.contains(beanName) &&  (beanClass != TypeSpecifyableTransactionProxyFactoryBean.class) ) || shouldProxy(beanClass, beanName)) {

[Demonstration 2]

[Buggy Method]
protected void finishBeanFactoryInitialization(ConfigurableListableBeanFactory beanFactory) {
    // Initialize conversion service for this context.
    if (beanFactory.containsBean(CONVERSION_SERVICE_BEAN_NAME) && beanFactory.isTypeMatch(CONVERSION_SERVICE_BEAN_NAME, ConversionService.class)) {
        beanFactory.setConversionService(beanFactory.getBean(CONVERSION_SERVICE_BEAN_NAME, ConversionService.class));
    }
    // Register a default embedded value resolver if no bean post-processor
    // (such as a PropertyPlaceholderConfigurer bean) registered any before:
    // at this point, primarily for resolution in annotation attribute values.
    if (!beanFactory.hasEmbeddedValueResolver()) {
        beanFactory.addEmbeddedValueResolver(new DefaultIgnorableStringValueResolver() {

            @Nullable
            @Override
            public String resolveStringValue(String strVal) {
                return getEnvironment().resolvePlaceholders(strVal);
            }

            @Nullable
            @Override
            public String resolveStringValueIgnoringDefault(String strVal) {
                throw new UnsupportedOperationException();
            }
        });
    }
    // Initialize LoadTimeWeaverAware beans early to allow for registering their transformers early.
    String[] weaverAwareNames = beanFactory.getBeanNamesForType(LoadTimeWeaverAware.class, false, false);
    for (String weaverAwareName : weaverAwareNames) {
        getBean(weaverAwareName);
    }
    // Stop using the temporary ClassLoader for type matching.
    beanFactory.setTempClassLoader(null);
    // Allow for caching all bean definition metadata, not expecting further changes.
    beanFactory.freezeConfiguration();
    // Instantiate all remaining (non-lazy-init) singletons.
    beanFactory.preInstantiateSingletons();
}

[Buggy Hunk]
throw new UnsupportedOperationException();

[Patch]
return getEnvironment().resolvePlaceholdersIgnoringDefault(strVal);

[Demonstration 3]

[Buggy Method]
public BigDecimal getGradeValue() {
    return BigDecimal.valueOf(Long.valueOf(getEntry().getGradeValue()));
}

[Buggy Hunk]
return BigDecimal.valueOf(Long.valueOf(getEntry().getGradeValue()));

[Patch]
return getEntry().getGrade().getNumericValue();