Package org.hibernate.search.engine.cfg.impl

Class EmptyConfigurationPropertySource

java.lang.Object

org.hibernate.search.engine.cfg.impl.EmptyConfigurationPropertySource

All Implemented Interfaces:

ConfigurationPropertySource

public class EmptyConfigurationPropertySource
extends Object
implements ConfigurationPropertySource

Method Summary

Modifier and Type	Method	Description
static ConfigurationPropertySource	get()
Optional<Object>	get(String key)
Optional<String>	resolve(String key)
String	toString()
ConfigurationPropertySource	withFallback(ConfigurationPropertySource fallback)	Create a new configuration source which falls back to another source when a property is missing in this source.
ConfigurationPropertySource	withMask(String mask)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.hibernate.search.engine.cfg.ConfigurationPropertySource

withOverride, withPrefix

Method Detail

get

public static ConfigurationPropertySource get()

get

public Optional<Object> get(String key)

Specified by:

get in interface ConfigurationPropertySource

Parameters:

key - The key of the property to get.

Returns:

An optional containing the value of the requested property, or Optional.empty() if the property is missing.

resolve

public Optional<String> resolve(String key)

Specified by:

resolve in interface ConfigurationPropertySource

Parameters:

key - The key of the property to get.

Returns:

An optional containing the key as registered in the underlying configuration source, with any transformation (prefixes, masks) reverted. Whether the optional is empty is not related to the key having a value in the underlying configuration source; instead, the optional is empty only if the key cannot possibly be registered in the underlying configuration source, e.g. if the key is missing a mandatory prefix.

withMask

public ConfigurationPropertySource withMask(String mask)

Specified by:

withMask in interface ConfigurationPropertySource

Parameters:

mask - A mask to filter the properties with.

Returns:

A source containing only the properties of this source that start with the given mask plus ".".

withFallback

public ConfigurationPropertySource withFallback(ConfigurationPropertySource fallback)

Description copied from interface: ConfigurationPropertySource

Create a new configuration source which falls back to another source when a property is missing in this source.

main.withFallback( fallback ) is equivalent to fallback.withOverride( main ) except for one detail: in the first example, a call to ConfigurationPropertySource.resolve(String) on the resulting source will resolve the key against main, but in the second example it will resolve the key against override.

Specified by:

withFallback in interface ConfigurationPropertySource

Parameters:

fallback - A fallback source.

Returns:

A source containing the same properties as this source, plus any property from fallback that isn't in this source.

toString

public String toString()

Overrides:

toString in class Object