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@SuppressWarnings("unused")
// Sure it's used. By Guice. So stop complaining.
protected ColQueryProvider() {
	try {
		// Exhibit one: ye olde dependency hell.
		// We *should* be able to just use new EclipseCompiler(), but GWT complains
		// in dev mode when ECJ is in the Eclipse classpath. So it's not.
		// ECJ is still loaded by the servlet container, so this is not an issue in deployment.
		final JavaCompiler compiler = (JavaCompiler)
				Class.forName("org.eclipse.jdt.internal.compiler.tool.EclipseCompiler").newInstance();
		
		// Tweaked based on QueryEngine.DEFAULT
		final DefaultEvaluatorFactory evaluatorFactory = new DefaultEvaluatorFactory(ColQueryTemplates.DEFAULT,
				(URLClassLoader) DefaultEvaluatorFactory.class.getClassLoader(), compiler);
		
		queryEngine = new DefaultQueryEngine(evaluatorFactory);
	} catch (final ClassNotFoundException e) {
		throw new ProvisionException("Eclipse compiler cannot be loaded", e);
	} catch (final InstantiationException e) {
		throw new ProvisionException("Eclipse compiler cannot be loaded", e);
	} catch (final IllegalAccessException e) {
		throw new ProvisionException("Eclipse compiler cannot be loaded", e);
	}
}