flatten() — spring-boot Function Reference

Architecture documentation for the flatten() function in CloudFoundryVcapEnvironmentPostProcessor.java from the spring-boot codebase.

Function java GradlePlugin AotProcessing calls 1 called by 2

Entity Profile

GradlePlugin→ AotProcessing→ flatten() — spring-boot Function Reference

Dependency Diagram

graph TD
  93112add_a711_264e_9059_7fb3a6c1b0bc["flatten()"]
  e30ebf2b_6a1b_e269_3513_9470a916a8d3["extractPropertiesFromApplication()"]
  e30ebf2b_6a1b_e269_3513_9470a916a8d3 -->|calls| 93112add_a711_264e_9059_7fb3a6c1b0bc
  e9307381_4736_21cf_8c72_428b6c32a224["extractPropertiesFromServices()"]
  e9307381_4736_21cf_8c72_428b6c32a224 -->|calls| 93112add_a711_264e_9059_7fb3a6c1b0bc
  d45906ff_6582_5a8f_fd6e_55187a36cc87["getPropertyName()"]
  93112add_a711_264e_9059_7fb3a6c1b0bc -->|calls| d45906ff_6582_5a8f_fd6e_55187a36cc87
  style 93112add_a711_264e_9059_7fb3a6c1b0bc fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

core/spring-boot/src/main/java/org/springframework/boot/cloud/CloudFoundryVcapEnvironmentPostProcessor.java lines 193–220

	@SuppressWarnings("unchecked")
	private void flatten(Properties properties, Map<String, Object> input, @Nullable String path) {
		input.forEach((key, value) -> {
			String name = getPropertyName(path, key);
			if (value instanceof Map) {
				// Need a compound key
				flatten(properties, (Map<String, Object>) value, name);
			}
			else if (value instanceof Collection<?> collection) {
				// Need a compound key
				properties.put(name, StringUtils.collectionToCommaDelimitedString(collection));
				int count = 0;
				for (Object item : collection) {
					String itemKey = "[" + (count++) + "]";
					flatten(properties, Collections.singletonMap(itemKey, item), name);
				}
			}
			else if (value instanceof String) {
				properties.put(name, value);
			}
			else if (value instanceof Number || value instanceof Boolean) {
				properties.put(name, value.toString());
			}
			else {
				properties.put(name, (value != null) ? value : "");
			}
		});
	}