com.vaadin.flow.component.internal

Class DependencyTreeCache<T>

java.lang.Object

com.vaadin.flow.component.internal.DependencyTreeCache<T>

Type Parameters:

T - the value type

All Implemented Interfaces:

Serializable

public class DependencyTreeCache<T>
extends Object
implements Serializable

A caching tree traverser for collecting and parsing dependencies.

For internal use only. May be renamed or removed in a future release.

Since:

1.2

Author:

Vaadin Ltd

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DependencyTreeCache(SerializableFunction<T,Collection<T>> dependencyParser) Creates a dependency cache with the given dependency parser.

Method Summary

Modifier and Type	Method and Description
void	clear() Clears all the contents of the cache.
Set<T>	getDependencies(T node) Collects all transitive dependencies of the given node, including the node itself.

Methods inherited from class java.lang.Object

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

Constructor Detail

DependencyTreeCache

public DependencyTreeCache(SerializableFunction<T,Collection<T>> dependencyParser)

Creates a dependency cache with the given dependency parser.

Parameters:

dependencyParser - a potentially slow callback function that finds the direct dependencies for any given value

Method Detail

getDependencies

public Set<T> getDependencies(T node)

Collects all transitive dependencies of the given node, including the node itself.

Parameters:

node - the node for which to collect dependencies

Returns:

the transitive dependencies of the given node

clear

public void clear()

Clears all the contents of the cache. A lookup that is in progress while the cache is cleared may return a result that combines previously cached dependencies with newly parsed dependencies.