org.anchoranalysis.core.identifier.provider

Class NamedProviderBridge<S,T>

Object

NamedProviderBridge<S,T>

Type Parameters:

S - source-type that is converted from.

T - destination-type that is converted to.

All Implemented Interfaces:

NamedProvider<T>

public class NamedProviderBridge<S,T>
extends Object
implements NamedProvider<T>

Exposes elements in a NamedProvider as a different type.

Author:

Owen Feehan

Constructor Summary

Constructors

Constructor and Description
NamedProviderBridge(NamedProvider<S> provider, CheckedFunction<S,T,? extends Exception> bridge) Creates with a particular provider and bridge.
NamedProviderBridge(NamedProvider<S> provider, CheckedFunction<S,T,? extends Exception> bridge, boolean bridgeNulls)

Method Summary

Modifier and Type	Method and Description
Optional<T>	getOptional(String key) Retrieves the item if it exists, or returns Optional.empty() if it doesn't exist.
Set<String>	keys() Returns a set of keys associated with the provider.

Methods inherited from class Object

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

Methods inherited from interface NamedProvider

getArbitraryElement, getException, isEmpty

Constructor Detail

NamedProviderBridge

public NamedProviderBridge(NamedProvider<S> provider,
                           CheckedFunction<S,T,? extends Exception> bridge)

Creates with a particular provider and bridge.

Parameters:

provider - the NamedProvider that supplies elements, before conversion.

bridge - a function that converts the elements in provider as they are accessed.

NamedProviderBridge

public NamedProviderBridge(NamedProvider<S> provider,
                           CheckedFunction<S,T,? extends Exception> bridge,
                           boolean bridgeNulls)

Method Detail

getOptional

public Optional<T> getOptional(String key)
                        throws NamedProviderGetException

Description copied from interface: NamedProvider

Retrieves the item if it exists, or returns Optional.empty() if it doesn't exist.

Note that a 'key' might still throw an exception for another reason (but never because a particular key is absent).

Specified by:

getOptional in interface NamedProvider<T>

Parameters:

key - a unique name for the item.

Returns:

the item, if it exists, otherwise Optional.empty().

Throws:

NamedProviderGetException - if no item exists for identifier.

keys

public Set<String> keys()

Description copied from interface: NamedProvider

Returns a set of keys associated with the provider.

There's no guarantee that it refers to all valid keys.

Specified by:

keys in interface NamedProvider<T>

Returns:

a set of all keys associated with the provider.