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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.di.componentgraph.core
import com.yahoo.component.provider.ComponentRegistry
import com.yahoo.component.{ComponentId, Component}
import ComponentRegistryNode._
import com.google.inject.Key
import com.google.inject.util.Types
import Node.syntheticComponentId
/**
* @author Tony Vaagenes
* @author gjoranv
*/
class ComponentRegistryNode(val componentClass : Class[AnyRef])
extends Node(componentId(componentClass)) {
def usedComponents = componentsToInject
protected def newInstance() = {
val registry = new ComponentRegistry[AnyRef]
componentsToInject foreach { component =>
registry.register(component.componentId, component.newOrCachedInstance())
}
registry
}
override val instanceKey =
Key.get(Types.newParameterizedType(classOf[ComponentRegistry[_]], componentClass)).asInstanceOf[Key[AnyRef]]
override val instanceType: Class[AnyRef] = instanceKey.getTypeLiteral.getRawType.asInstanceOf[Class[AnyRef]]
override val componentType: Class[AnyRef] = instanceType
override def configKeys = Set()
override def equals(other: Any) = {
other match {
case that: ComponentRegistryNode =>
componentId == that.componentId && // includes componentClass
instanceType == that.instanceType &&
equalEdges(usedComponents, that.usedComponents)
case _ => false
}
}
override def label =
"{ComponentRegistry\\<%s\\>|%s}".format(componentClass.getSimpleName, Node.packageName(componentClass))
}
object ComponentRegistryNode {
val componentRegistryNamespace = ComponentId.fromString("ComponentRegistry")
def componentId(componentClass: Class[_]) = {
syntheticComponentId(componentClass.getName, componentClass, componentRegistryNamespace)
}
def equalEdges(edges: List[Node], otherEdges: List[Node]): Boolean = {
def compareEdges = {
(sortByComponentId(edges) zip sortByComponentId(otherEdges)).
forall(equalEdge)
}
def sortByComponentId(in: List[Node]) = in.sortBy(_.componentId)
def equalEdge(edgePair: (Node, Node)): Boolean = edgePair._1.componentId == edgePair._2.componentId
edges.size == otherEdges.size &&
compareEdges
}
}
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