ing

context/attributes.go

@@ -2,66 +2,75 @@ package context
 
 import "sync"
 
-type AttributeManager interface {
-	Init()
-	SetAttribute(key string, value interface{})
-	GetAttribute(key string) (value interface{})
-	RemoveAttribute(key string)
+type Attributes interface {
+	initialize()
+	Set(key string, value interface{})
+	Get(key string) (value interface{})
+	Remove(key string)
 	Contains(key string) (exist bool)
 	Destroy()
 }
 
-type AttributeManagers struct {
-	Parent     AttributeManager
-	attributes map[string]interface{}
+func NewAttributes(parent Attributes) Attributes {
+	am := &attributes{
+		Parent: parent,
+	}
+	am.initialize()
+
+	return am
+}
+
+type attributes struct {
+	Parent Attributes
+	values map[string]interface{}
 
 	mtx sync.RWMutex
 }
 
-func (am *AttributeManagers) Init() {
+func (am *attributes) initialize() {
 	if nil != am.Parent {
-		am.Parent.Init()
+		am.Parent.initialize()
 	}
 
-	if nil == am.attributes {
+	if nil == am.values {
 		am.Destroy()
 	}
-	am.attributes = make(map[string]interface{})
+	am.values = make(map[string]interface{})
 }
 
-func (am *AttributeManagers) SetAttribute(key string, value interface{}) {
+func (am *attributes) Set(key string, value interface{}) {
 	am.checkInitialized()
 
 	am.mtx.Lock()
 	defer am.mtx.Unlock()
 
-	am.attributes[key] = value
+	am.values[key] = value
 }
 
-func (am *AttributeManagers) GetAttribute(key string) (value interface{}) {
+func (am *attributes) Get(key string) (value interface{}) {
 	am.checkInitialized()
 
 	am.mtx.RLock()
 	defer am.mtx.RUnlock()
 
-	if _, ok := am.attributes[key]; ok {
-		return am.attributes[key]
+	if _, ok := am.values[key]; ok {
+		return am.values[key]
 	}
 
 	if nil == am.Parent {
 		return nil
 	}
-	return am.Parent.GetAttribute(key)
+	return am.Parent.Get(key)
 }
 
-func (am *AttributeManagers) RemoveAttribute(key string) {
+func (am *attributes) Remove(key string) {
 	am.checkInitialized()
 
 	am.mtx.Lock()
 	defer am.mtx.Unlock()
 
-	if _, ok := am.attributes[key]; ok {
-		delete(am.attributes, key)
+	if _, ok := am.values[key]; ok {
+		delete(am.values, key)
 		return
 	}
 
@@ -69,16 +78,16 @@ func (am *AttributeManagers) RemoveAttribute(key string) {
 		return
 	}
 
-	am.Parent.RemoveAttribute(key)
+	am.Parent.Remove(key)
 }
 
-func (am *AttributeManagers) Contains(key string) (exist bool) {
+func (am *attributes) Contains(key string) (exist bool) {
 	am.checkInitialized()
 
 	am.mtx.RLock()
 	defer am.mtx.RUnlock()
 
-	if _, ok := am.attributes[key]; ok {
+	if _, ok := am.values[key]; ok {
 		return true
 	}
 
@@ -88,9 +97,9 @@ func (am *AttributeManagers) Contains(key string) (exist bool) {
 	return am.Parent.Contains(key)
 }
 
-func (am *AttributeManagers) Destroy() {
-	if nil != am.attributes {
-		am.attributes = nil
+func (am *attributes) Destroy() {
+	if nil != am.values {
+		am.values = nil
 	}
 
 	if nil != am.Parent {
@@ -98,8 +107,8 @@ func (am *AttributeManagers) Destroy() {
 	}
 }
 
-func (am *AttributeManagers) checkInitialized() {
-	if nil == am.attributes {
+func (am *attributes) checkInitialized() {
+	if nil == am.values {
 		panic("Attribute Manager: must be initialized")
 	}
 }