org.springframework.core.env.MutablePropertySources#precedenceOf ( )源码实例Demo

@Test
public void orderingIsCorrect() {
	refresher.refresh();
	MutablePropertySources propertySources = environment.getPropertySources();
	PropertySource<?> test1 = propertySources
			.get("bootstrapProperties-testContextRefresherOrdering1");
	PropertySource<?> test2 = propertySources
			.get("bootstrapProperties-testContextRefresherOrdering2");
	PropertySource<?> test3 = propertySources
			.get("bootstrapProperties-testContextRefresherOrdering3");
	int index1 = propertySources.precedenceOf(test1);
	int index2 = propertySources.precedenceOf(test2);
	int index3 = propertySources.precedenceOf(test3);
	assertThat(index1).as("source1 index not less then source2").isLessThan(index2);
	assertThat(index2).as("source2 index not less then source3").isLessThan(index3);
}
 

private void ensureBootstrapPropertyPrecedence(ConfigurableEnvironment environment) {
  MutablePropertySources propertySources = environment.getPropertySources();

  PropertySource<?> bootstrapPropertySource = propertySources
      .get(PropertySourcesConstants.APOLLO_BOOTSTRAP_PROPERTY_SOURCE_NAME);

  // not exists or already in the first place
  if (bootstrapPropertySource == null || propertySources.precedenceOf(bootstrapPropertySource) == 0) {
    return;
  }

  propertySources.remove(PropertySourcesConstants.APOLLO_BOOTSTRAP_PROPERTY_SOURCE_NAME);
  propertySources.addFirst(bootstrapPropertySource);
}
 

@Test
public void orderingIsCorrect() {
	MutablePropertySources propertySources = environment.getPropertySources();
	PropertySource<?> test1 = propertySources
			.get("bootstrapProperties-testBootstrap1");
	PropertySource<?> test2 = propertySources
			.get("bootstrapProperties-testBootstrap2");
	PropertySource<?> test3 = propertySources
			.get("bootstrapProperties-testBootstrap3");
	int index1 = propertySources.precedenceOf(test1);
	int index2 = propertySources.precedenceOf(test2);
	int index3 = propertySources.precedenceOf(test3);
	assertThat(index1).as("source1 index not less then source2").isLessThan(index2);
	assertThat(index2).as("source2 index not less then source3").isLessThan(index3);
}