Package org.apache.juneau.commons.settings

Interface PropertySource

All Known Subinterfaces:

FunctionalPropertySource, PropertyStore, SensitivePropertySource

All Known Implementing Classes:

ArgsPropertySource, CachingPropertySource, ConfigPropertySource, DotenvPropertySource, FunctionalPropertyStore, ManifestFilePropertySource, MapStore, RelaxedPropertySource, SecretStorePropertySource, SpringEnvironmentPropertySource, SystemEnvPropertySource, SystemPropertyPropertySource

public interface PropertySource

Interface for pluggable property sources used by Settings.

A property source provides a way to retrieve property values. Sources are checked in reverse order (last added is checked first) when looking up properties.

For writable sources that support modifying property values, see PropertyStore.

Method Summary

Modifier and Type	Method	Description
PropertyLookupResult	get(String name)	Returns a property in this property source.

Method Details

get

PropertyLookupResult get(String name)

Returns a property in this property source.

Parameters:

name - The property name.

Returns:

The property lookup result:

• PropertyLookupResult.missing() if this source does not define the key.
• PropertyLookupResult.present(Optional) with Optional.empty() if the key exists with a null value.
• PropertyLookupResult.present(Optional) with a value if the key exists with a non-null value.