reorg of MapDBStore to permit views

build.gradle

@@ -1,5 +1,5 @@
 group 'kweb'
-version '0.4.3'
+version '0.4.4'
 
 buildscript {
     ext.kotlin_version = '1.4.0'
@@ -54,6 +54,7 @@ dependencies {
     implementation 'org.lmdbjava:lmdbjava:0.7.0'
     compile "org.jetbrains.kotlinx:kotlinx-serialization-core:1.0.0-RC"
     implementation "org.jetbrains.kotlinx:kotlinx-serialization-protobuf:1.0.0-RC"
+    implementation "org.mapdb:mapdb:3.0.8"
 
     testImplementation "io.kotest:kotest-runner-junit5-jvm:4.2.3"
     testImplementation "io.kotest:kotest-assertions-core-jvm:4.2.3"

src/main/kotlin/kweb/shoebox/Shoebox.kt

@@ -7,6 +7,7 @@ import kweb.shoebox.View.VerifyBehavior
 import kweb.shoebox.View.VerifyBehavior.BLOCKING_VERIFY
 import kweb.shoebox.stores.DirectoryStore
 import kweb.shoebox.stores.LmdbStore
+import kweb.shoebox.stores.MapDBStore
 import kweb.shoebox.stores.MemoryStore
 import java.nio.file.Path
 import java.util.concurrent.ConcurrentHashMap
@@ -163,6 +164,7 @@ class Shoebox<T : Any>(val store: Store<T>) {
             is MemoryStore<T> -> MemoryStore<Reference>()
             is DirectoryStore<T> ->
                 DirectoryStore(store.directory.parent.resolve("${store.directory.fileName}-$name-view"), Reference.serializer())
+            is MapDBStore<T> -> MapDBStore(store.db, "${store.name}-$name-view", Reference.serializer())
             is LmdbStore<T> -> LmdbStore("${store.name}-$name-view", Reference.serializer())
             else -> throw RuntimeException("Shoebox doesn't currently support creating a view for store type ${store::class.simpleName}")
         }

src/main/kotlin/kweb/shoebox/stores/LmdbStore.kt

@@ -20,7 +20,7 @@ val defaultGson: Gson = Converters.registerAll(GsonBuilder()).let {
     it.registerTypeAdapter(object : TypeToken<Duration>() {}.type, DurationConverter())
 }.create()
 */
-@Deprecated("Should be used via MapStore")
+@Deprecated("Use MapDBStore instead")
 class LmdbStore<T : Any>(val name: String, private val kSerializer: KSerializer<T>) : Store<T> {
 
     companion object {

src/main/kotlin/kweb/shoebox/stores/MapStore.kt → src/main/kotlin/kweb/shoebox/stores/MapDBStore.kt

@@ -5,12 +5,16 @@ import kotlinx.serialization.KSerializer
 import kotlinx.serialization.protobuf.ProtoBuf
 import kweb.shoebox.KeyValue
 import kweb.shoebox.Store
+import org.mapdb.DB
+import org.mapdb.Serializer
 
 /**
  * Created by ian on 3/22/17.
  */
 @ExperimentalSerializationApi
-class MapStore<T : Any>(private val map : MutableMap<String, ByteArray>, private val serializer: KSerializer<T>) : Store<T> {
+class MapDBStore<T : Any>(val db : DB, val name : String, val serializer: KSerializer<T>) : Store<T> {
+
+    private val map = db.hashMap(name).keySerializer(Serializer.STRING).valueSerializer(Serializer.BYTE_ARRAY).create()
 
     override val entries: Iterable<KeyValue<T>>
         get() = map.map { (k, v) ->