Package org.apache.juneau.commons.settings

Class FunctionalPropertyStore

java.lang.Object

org.apache.juneau.commons.settings.FunctionalPropertyStore

All Implemented Interfaces:

PropertySource, PropertyStore

public class FunctionalPropertyStore
extends Object
implements PropertyStore

A writable PropertyStore implementation created from functional interfaces.

Constructor Summary

Constructors

Constructor	Description
FunctionalPropertyStore(UnaryOperator<String> reader, BiConsumer<String,String> writer, Consumer<String> unsetter, Snippet clearer)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	clear()	Clears all properties from this store.
PropertyLookupResult	get(String name)	Returns a property in this property source.
static FunctionalPropertyStore	of(UnaryOperator<String> reader, BiConsumer<String,String> writer, Consumer<String> unsetter, Snippet clearer)	Creates a new store from the specified functions.
void	set(String name, String value)	Sets a property in this store.
void	unset(String name)	Removes a property from this store.

Methods inherited from class java.lang.Object

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

Constructor Details

FunctionalPropertyStore

public FunctionalPropertyStore(UnaryOperator<String> reader,
 BiConsumer<String,String> writer,
 Consumer<String> unsetter,
 Snippet clearer)

Constructor.

Parameters:

reader - The function used to read property values by name. Must not be null.

writer - The function used to write property values. Must not be null.

unsetter - The function used to remove a property by name. Must not be null.

clearer - The function used to clear all properties. Must not be null.

Method Details

get

public PropertyLookupResult get(String name)

Description copied from interface: PropertySource

Returns a property in this property source.

Specified by:

get in interface PropertySource

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.

set

public void set(String name,
 String value)

Description copied from interface: PropertyStore

Sets a property in this store.

Specified by:

set in interface PropertyStore

Parameters:

name - The property name.

value - The property value, or null to set an empty override.

unset

public void unset(String name)

Description copied from interface: PropertyStore

Removes a property from this store.

Specified by:

unset in interface PropertyStore

Parameters:

name - The property name to remove.

clear

public void clear()

Description copied from interface: PropertyStore

Clears all properties from this store.

Specified by:

clear in interface PropertyStore

of

public static FunctionalPropertyStore of(UnaryOperator<String> reader,
 BiConsumer<String,String> writer,
 Consumer<String> unsetter,
 Snippet clearer)

Creates a new store from the specified functions.

Parameters:

reader - The function used to read property values by name. Must not be null.

writer - The function used to write property values. Must not be null.

unsetter - The function used to remove a property by name. Must not be null.

clearer - The function used to clear all properties. Must not be null.

Returns:

A new store.