All Known Subinterfaces:
IterableConfigurationPropertySource
All Known Implementing Classes:
MapConfigurationPropertySource
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface ConfigurationPropertySource
```
A source of ConfigurationProperties.
Since:
2.0.0
See Also:
ConfigurationPropertyName, OriginTrackedValue, getConfigurationProperty(ConfigurationPropertyName)

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default ConfigurationPropertyState`	`containsDescendantOf(ConfigurationPropertyName name)`	Returns if the source contains any descendants of the specified name.
`default ConfigurationPropertySource`	`filter(Predicate<ConfigurationPropertyName> filter)`	Return a filtered variant of this source, containing only names that match the given `Predicate`.
`ConfigurationProperty`	`getConfigurationProperty(ConfigurationPropertyName name)`	Return a single `ConfigurationProperty` from the source or `null` if no property can be found.
`default Object`	`getUnderlyingSource()`	Return the underlying source that is actually providing the properties.
`default ConfigurationPropertySource`	`withAliases(ConfigurationPropertyNameAliases aliases)`	Return a variant of this source that supports name aliases.

- Method Detail
  - getConfigurationProperty
```
ConfigurationProperty getConfigurationProperty(ConfigurationPropertyName name)
```
    Return a single ConfigurationProperty from the source or null if no property can be found.
    Parameters:
    name - the name of the property (must not be null)
    Returns:
    the associated object or null.
  - containsDescendantOf
```
default ConfigurationPropertyState containsDescendantOf(ConfigurationPropertyName name)
```
    Returns if the source contains any descendants of the specified name. May return ConfigurationPropertyState.PRESENT or ConfigurationPropertyState.ABSENT if an answer can be determined or ConfigurationPropertyState.UNKNOWN if it's not possible to determine a definitive answer.
    Parameters:
    name - the name to check
    Returns:
    if the source contains any descendants
  - filter
```
default ConfigurationPropertySource filter(Predicate<ConfigurationPropertyName> filter)
```
    Return a filtered variant of this source, containing only names that match the given Predicate.
    Parameters:
    filter - the filter to match
    Returns:
    a filtered ConfigurationPropertySource instance
  - withAliases
```
default ConfigurationPropertySource withAliases(ConfigurationPropertyNameAliases aliases)
```
    Return a variant of this source that supports name aliases.
    Parameters:
    aliases - a function that returns a stream of aliases for any given name
    Returns:
    a ConfigurationPropertySource instance supporting name aliases
  - getUnderlyingSource
```
default Object getUnderlyingSource()
```
    Return the underlying source that is actually providing the properties.
    Returns:
    the underlying property source or null.

Interface ConfigurationPropertySource

Method Summary

Method Detail

getConfigurationProperty

containsDescendantOf

filter

withAliases

getUnderlyingSource