add support for creating views directly from Shoebox

build.gradle

@@ -1,5 +1,5 @@
 group 'com.github.sanity'
-version '0.2.7'
+version '0.2.8'
 
 buildscript {
     ext.kotlin_version = '1.1.1'

src/main/kotlin/com/github/sanity/shoebox/Shoebox.kt

@@ -134,7 +134,15 @@ class Shoebox<T : Any>(val store: Store<T>, private val kc: KClass<T>) {
         }
     }
 
-
+    fun view(name : String, by : (T) -> String) : View<T> {
+        val store = when (store) {
+            is MemoryStore<T> -> MemoryStore<View.Reference>()
+            is DirectoryStore<T> ->
+                DirectoryStore<View.Reference>(store.directory.parent.resolve("${store.directory.fileName.toString()}-$name-view"))
+            else -> throw RuntimeException("Shoebox doesn't currently support creating a view for store type ${store::class.simpleName}")
+        }
+        return View<T>(Shoebox(store), this, View.VerifyBehavior.ASYNC_VERIFY, by)
+    }
 }
 
 /**

src/main/kotlin/com/github/sanity/shoebox/Store.kt

@@ -5,7 +5,6 @@ package com.github.sanity.shoebox
  */
 interface Store<T> {
     val entries: Iterable<KeyValue<T>>
-
     fun remove(key: String): T?
     operator fun get(key: String): T?
     operator fun set(key: String, value: T) : T?

src/main/kotlin/com/github/sanity/shoebox/View.kt

@@ -1,6 +1,5 @@
 package com.github.sanity.shoebox
 
-import java.nio.file.Path
 import java.util.*
 import java.util.concurrent.ConcurrentHashMap
 import kotlin.concurrent.thread

src/main/kotlin/com/github/sanity/shoebox/stores/DirectoryStore.kt

@@ -17,7 +17,7 @@ import kotlin.reflect.KClass
 
 inline fun <reified T : Any> DirectoryStore(directory : Path) = DirectoryStore(directory, T::class)
 
-class DirectoryStore<T : Any>(private val directory : Path, private val kc : KClass<T>) : Store<T> {
+class DirectoryStore<T : Any>(val directory : Path, private val kc : KClass<T>) : Store<T> {
     companion object {
         const private val LOCK_FILENAME = "shoebox.lock"
         const private val LOCK_TOUCH_TIME_MS = 2000.toLong()