ParentLastURLClassLoader should set itself as context ClassLoader

I am converting a Spring XD Sample (Batch notifications) from copying jars to (old way)

$XD_HOME/lib

To rather copy the module jar to (new preferred way)

$XD_HOME/modules/job/payment-import/lib

By doing so, I hit a classloader issue. Custom classes and resources are loaded in Spring XD using org.springframework.xd.module.support.ParentLastURLClassLoader.

However, the sample is initializing custom bean definitions and one of those creates a new DataSource using the EmbeddedDatabaseBuilder. This class however, under the hood, uses the Default class loader to load SQL scripts:

	public DefaultResourceLoader() {
		this.classLoader = ClassUtils.getDefaultClassLoader();
	}

Therefore, the SQL scripts are NOT FOUND.

Possible Solution

A possible solution seems to be for ParentLastURLClassLoader to set itself as the context ClassLoader for the current thread:

	public ParentLastURLClassLoader(URL[] classpath, ClassLoader parent) {
		...
		Thread.currentThread().setContextClassLoader(this);
		...
	}