Package com.yahoo.container.di.componentgraph.core

Class Node

java.lang.Object

com.yahoo.container.di.componentgraph.core.Node

Direct Known Subclasses:

ComponentNode, ComponentRegistryNode, GuiceNode

public abstract class Node
extends Object

Author:

Tony Vaagenes, gjoranv, ollivir

Field Summary

Fields

Modifier and Type	Field	Description
protected Optional<Object>	instance

Constructor Summary

Constructors

Constructor	Description
Node(com.yahoo.component.ComponentId componentId)

Method Summary

Modifier and Type	Method	Description
Object	component()	Returns the component represented by this - which is either the instance, or if the instance is a provider, the component returned by it.
com.yahoo.component.ComponentId	componentId()
abstract Class<?>	componentType()
abstract Set<com.yahoo.vespa.config.ConfigKey<com.yahoo.config.ConfigInstance>>	configKeys()
Optional<?>	constructedInstance()	Returns the already constructed instance in this, if any
void	constructInstance()	Constructs the instance represented by this node, if not already done.
static boolean	equalEdges(List<?> edges1, List<?> edges2)
boolean	equals(Object other)
int	hashCode()
String	idAndType()
void	inject(Node component)
void	injectAll(Collection<ComponentNode> componentNodes)
abstract com.google.inject.Key<?>	instanceKey()
abstract Class<?>	instanceType()
abstract String	label()
protected abstract Object	newInstance()
static String	packageName(Class<?> componentClass)
protected static com.yahoo.component.ComponentId	syntheticComponentId(String className, Object identityObject, com.yahoo.component.ComponentId namespace)
String	toString()
abstract List<Node>	usedComponents()	The components actually used by this node.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

instance

protected Optional<Object> instance

Constructor Detail

Node

public Node(com.yahoo.component.ComponentId componentId)

Method Detail

instanceKey

public abstract com.google.inject.Key<?> instanceKey()

usedComponents

public abstract List<Node> usedComponents()

The components actually used by this node. Consist of a subset of the injected nodes + subset of the global nodes.

newInstance

protected abstract Object newInstance()

constructInstance

public void constructInstance()

Constructs the instance represented by this node, if not already done.

component

public Object component()

Returns the component represented by this - which is either the instance, or if the instance is a provider, the component returned by it.

configKeys

public abstract Set<com.yahoo.vespa.config.ConfigKey<com.yahoo.config.ConfigInstance>> configKeys()

inject

public void inject(Node component)

injectAll

public void injectAll(Collection<ComponentNode> componentNodes)

instanceType

public abstract Class<?> instanceType()

componentType

public abstract Class<?> componentType()

label

public abstract String label()

idAndType

public String idAndType()

equalEdges

public static boolean equalEdges(List<?> edges1,
                                 List<?> edges2)

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object

componentId

public com.yahoo.component.ComponentId componentId()

constructedInstance

public Optional<?> constructedInstance()

Returns the already constructed instance in this, if any

syntheticComponentId

protected static com.yahoo.component.ComponentId syntheticComponentId(String className,
                                                                      Object identityObject,
                                                                      com.yahoo.component.ComponentId namespace)

Parameters:

identityObject - he identifying object that makes the Node unique

packageName

public static String packageName(Class<?> componentClass)