Avoid exposing AbstractDsl#initialize in public API

Closes #218

Author: sdeleuze

kofu/src/main/kotlin/org/springframework/fu/kofu/AbstractDsl.kt

@@ -26,12 +26,12 @@ internal annotation class KofuMarker
 /**
  * Kofu DSL base class.
  *
- * Make sure to invoke `super.initialize(context)` from [initialize] in inherited classes to get the context initialized.
+ * Make sure to invoke `super.initialize(context)` in inherited classes to get the context initialized.
  *
  * @author Sebastien Deleuze
  */
 @KofuMarker
-abstract class AbstractDsl : ApplicationContextInitializer<GenericApplicationContext> {
+abstract class AbstractDsl {
 
 	@PublishedApi
 	internal lateinit var context: GenericApplicationContext
@@ -58,8 +58,9 @@ abstract class AbstractDsl : ApplicationContextInitializer<GenericApplicationCon
 		}
 	}
 
-	override fun initialize(context: GenericApplicationContext) {
+	internal open fun initialize(context: GenericApplicationContext) {
 		this.context = context
 	}
 
+	internal fun toInitializer() = ApplicationContextInitializer<GenericApplicationContext> { initialize(it) }
 }

kofu/src/main/kotlin/org/springframework/fu/kofu/ConfigurationDsl.kt

@@ -36,7 +36,7 @@ open class ConfigurationDsl(private val dsl: ConfigurationDsl.() -> Unit): Abstr
 	 * @see configuration
 	 * @sample org.springframework.fu.kofu.samples.applicationDslWithConfiguration
 	 */
-	fun enable(configuration: ApplicationContextInitializer<GenericApplicationContext>) {
+	fun enable(configuration: AbstractDsl) {
         configuration.initialize(context)
 	}
 

kofu/src/main/kotlin/org/springframework/fu/kofu/KofuApplication.kt

@@ -11,7 +11,7 @@ import org.springframework.context.support.GenericApplicationContext
  * @see application
  * @author Sebastien Deleuze
  */
-abstract class KofuApplication(private val initializer: ApplicationContextInitializer<GenericApplicationContext>) {
+abstract class KofuApplication(private val initializer: AbstractDsl) {
 
     private var customizer: (ApplicationDsl.() -> Unit)? = null
 
@@ -31,8 +31,8 @@ abstract class KofuApplication(private val initializer: ApplicationContextInitia
         if (!profiles.isEmpty()) {
             app.setAdditionalProfiles(*profiles.split(",").map { it.trim() }.toTypedArray())
         }
-        app.addInitializers(initializer)
-        if (customizer != null) app.addInitializers(ApplicationDsl(customizer!!))
+        app.addInitializers(initializer.toInitializer())
+        if (customizer != null) app.addInitializers(ApplicationDsl(customizer!!).toInitializer())
         System.setProperty("spring.backgroundpreinitializer.ignore", "true")
         System.setProperty("spring.main.lazy-initialization", "true")
         return app.run(*args)