From 0e5a31db9f2b232baed5b475cdd5052f1923cad1 Mon Sep 17 00:00:00 2001
From: Alexander Nozik <altavir@gmail.com>
Date: Tue, 6 Feb 2024 10:21:05 +0300
Subject: [PATCH] Hot fix for observable meta wrapper

---
 .../space/kscience/dataforge/meta/ObservableMetaWrapper.kt    | 4 ++--
 .../space/kscience/dataforge/meta/ObservableMetaTest.kt       | 2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/dataforge-meta/src/commonMain/kotlin/space/kscience/dataforge/meta/ObservableMetaWrapper.kt b/dataforge-meta/src/commonMain/kotlin/space/kscience/dataforge/meta/ObservableMetaWrapper.kt
index 71e15aa9..abd2deb6 100644
--- a/dataforge-meta/src/commonMain/kotlin/space/kscience/dataforge/meta/ObservableMetaWrapper.kt
+++ b/dataforge-meta/src/commonMain/kotlin/space/kscience/dataforge/meta/ObservableMetaWrapper.kt
@@ -15,9 +15,9 @@ private class ObservableMetaWrapper(
     val listeners: MutableSet<MetaListener>,
 ) : ObservableMutableMeta {
     override val items: Map<NameToken, ObservableMutableMeta>
-        get() = root.items.keys.associateWith {
+        get() = root[nodeName]?.items?.keys?.associateWith {
             ObservableMetaWrapper(root, nodeName + it, listeners)
-        }
+        } ?: emptyMap()
 
     override fun get(name: Name): ObservableMutableMeta? = if (root[nodeName + name] == null) {
         null
diff --git a/dataforge-meta/src/commonTest/kotlin/space/kscience/dataforge/meta/ObservableMetaTest.kt b/dataforge-meta/src/commonTest/kotlin/space/kscience/dataforge/meta/ObservableMetaTest.kt
index 4681ec12..2d6cc36f 100644
--- a/dataforge-meta/src/commonTest/kotlin/space/kscience/dataforge/meta/ObservableMetaTest.kt
+++ b/dataforge-meta/src/commonTest/kotlin/space/kscience/dataforge/meta/ObservableMetaTest.kt
@@ -17,6 +17,8 @@ class ObservableMetaTest {
             }
         }.asObservable()
 
+        println(meta)
+
         assertEquals("scatter", meta["data.type"].string)
     }