Convenience methods to access DataNode elements

dataforge-data/src/commonMain/kotlin/hep/dataforge/data/DataFilter.kt

@@ -5,12 +5,23 @@ import hep.dataforge.names.toName
 
 
 class DataFilter(override val config: Config) : Specific {
+    /**
+     * A source node for the filter
+     */
     var from by string()
+    /**
+     * A target placement for the filtered node
+     */
     var to by string()
+    /**
+     * A regular expression pattern for the filter
+     */
     var pattern by string("*.")
 //    val prefix by string()
 //    val suffix by string()
 
+    fun isEmpty(): Boolean = config.isEmpty()
+
     companion object : Specification<DataFilter> {
         override fun wrap(config: Config): DataFilter = DataFilter(config)
     }

dataforge-data/src/commonMain/kotlin/hep/dataforge/data/DataNode.kt

@@ -72,6 +72,8 @@ operator fun <T : Any> DataNode<T>.get(name: Name): DataItem<T>? = when (name.le
     else -> get(name.first()!!.asName()).node?.get(name.cutFirst())
 }
 
+operator fun <T : Any> DataNode<T>.get(name: String): DataItem<T>? = get(name.toString())
+
 /**
  * Sequence of all children including nodes
  */

dataforge-data/src/jvmMain/kotlin/hep/dataforge/data/CastDataNode.kt

@@ -8,7 +8,7 @@ import kotlin.reflect.KClass
 import kotlin.reflect.full.isSubclassOf
 
 @Suppress("UNCHECKED_CAST")
-private fun <T : Any, R : Any> Data<T>.safeCast(type: KClass<out R>): Data<R>? {
+fun <T : Any, R : Any> Data<T>.safeCast(type: KClass<out R>): Data<R>? {
     return if (this.type.isSubclassOf(type)) {
         return object : Data<R> {
             override val meta: Meta get() = this@safeCast.meta
@@ -23,6 +23,8 @@ private fun <T : Any, R : Any> Data<T>.safeCast(type: KClass<out R>): Data<R>? {
     }
 }
 
+inline fun <reified R : Any> Data<*>.safeCast(): Data<R>?  = safeCast(R::class)
+
 class CastDataNode<out T : Any>(val origin: DataNode<Any>, override val type: KClass<out T>) : DataNode<T> {
     override val items: Map<NameToken, DataItem<T>>  by lazy {
         origin.items.mapNotNull { (key, item) ->

dataforge-io/build.gradle.kts

@@ -15,18 +15,16 @@ kotlin {
         commonMain{
             dependencies {
                 api(project(":dataforge-context"))
-                api("org.jetbrains.kotlinx:kotlinx-io:0.1.14")
             }
         }
         jvmMain{
             dependencies {
-                api("org.jetbrains.kotlinx:kotlinx-io-jvm:0.1.14")
+
             }
         }
         jsMain{
             dependencies{
-                //api(npm("text-encoding"))
+                api(npm("text-encoding"))
-                api("org.jetbrains.kotlinx:kotlinx-io-js:0.1.14")
             }
         }
     }

dataforge-workspace/src/commonMain/kotlin/hep/dataforge/workspace/TaskModel.kt

@@ -12,6 +12,7 @@ import hep.dataforge.data.dataSequence
 import hep.dataforge.meta.*
 import hep.dataforge.names.EmptyName
 import hep.dataforge.names.Name
+import hep.dataforge.names.asName
 import hep.dataforge.names.toName
 import hep.dataforge.workspace.TaskModel.Companion.MODEL_TARGET_KEY
 
@@ -43,7 +44,7 @@ data class TaskModel(
     }
 
     companion object {
-        const val MODEL_TARGET_KEY = "@target"
+        val MODEL_TARGET_KEY = "@target".asName()
     }
 }