Add ValueProvider.kt
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@ -4,7 +4,7 @@ plugins {
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allprojects {
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group = "space.kscience"
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version = "0.5.0-dev-10"
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version = "0.5.0-dev-11"
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}
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subprojects {
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@ -19,8 +19,10 @@ public interface MetaRepr {
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/**
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* A container for meta nodes
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*/
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public fun interface MetaProvider {
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public fun interface MetaProvider : ValueProvider {
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public fun getMeta(name: Name): Meta?
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override fun getValue(name: Name): Value? = getMeta(name)?.value
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}
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/**
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@ -4,6 +4,7 @@ import kotlinx.serialization.Serializable
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import space.kscience.dataforge.misc.DFExperimental
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import space.kscience.dataforge.names.*
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import space.kscience.dataforge.values.EnumValue
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import space.kscience.dataforge.values.MutableValueProvider
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import space.kscience.dataforge.values.Value
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import space.kscience.dataforge.values.asValue
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import kotlin.js.JsName
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@ -19,10 +20,12 @@ public annotation class MetaBuilder
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/**
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* A generic interface that gives access to getting and setting meta notes and values
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*/
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public interface MutableMetaProvider : MetaProvider {
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public interface MutableMetaProvider : MetaProvider, MutableValueProvider {
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override fun getMeta(name: Name): MutableMeta?
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public fun setMeta(name: Name, node: Meta?)
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public fun setValue(name: Name, value: Value?)
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override fun setValue(name: Name, value: Value?) {
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getMeta(name)?.value = value
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}
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}
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/**
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@ -12,8 +12,14 @@ import kotlin.jvm.Synchronized
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*/
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public open class Scheme : Described, MetaRepr, MutableMetaProvider, Configurable {
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/**
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* Meta to be mutated by this schme
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*/
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private var targetMeta: MutableMeta = MutableMeta()
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/**
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* Default values provided by this scheme
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*/
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private var defaultMeta: Meta? = null
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final override val meta: ObservableMutableMeta = SchemeMeta(Name.EMPTY)
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@ -25,7 +31,7 @@ public open class Scheme : Described, MetaRepr, MutableMetaProvider, Configurabl
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newMeta: MutableMeta,
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preserveDefault: Boolean = false
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) {
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if(preserveDefault){
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if (preserveDefault) {
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defaultMeta = targetMeta.seal()
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}
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targetMeta = newMeta
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@ -62,12 +68,14 @@ public open class Scheme : Described, MetaRepr, MutableMetaProvider, Configurabl
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private inner class SchemeMeta(val pathName: Name) : ObservableMutableMeta {
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override var value: Value?
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get() = targetMeta[pathName]?.value ?: defaultMeta?.get(pathName)?.value
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get() = targetMeta[pathName]?.value
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?: defaultMeta?.get(pathName)?.value
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?: descriptor?.get(pathName)?.defaultValue
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set(value) {
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val oldValue = targetMeta[pathName]?.value
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targetMeta[pathName] = value
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if (oldValue != value) {
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invalidate(pathName)
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invalidate(Name.EMPTY)
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}
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}
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@ -84,9 +92,9 @@ public open class Scheme : Described, MetaRepr, MutableMetaProvider, Configurabl
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@Synchronized
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override fun onChange(owner: Any?, callback: Meta.(name: Name) -> Unit) {
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listeners.add(MetaListener(owner) { changedeName ->
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if (changedeName.startsWith(pathName)) {
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this@Scheme.meta.callback(changedeName.removeHeadOrNull(pathName)!!)
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listeners.add(MetaListener(owner) { changedName ->
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if (changedName.startsWith(pathName)) {
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this@Scheme.meta.callback(changedName.removeHeadOrNull(pathName)!!)
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}
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})
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}
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@ -0,0 +1,17 @@
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package space.kscience.dataforge.values
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import space.kscience.dataforge.names.Name
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/**
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* An object that could provide values
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*/
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public fun interface ValueProvider {
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public fun getValue(name: Name): Value?
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}
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/**
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* An object that could consume values
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*/
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public interface MutableValueProvider: ValueProvider{
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public fun setValue(name: Name, value: Value?)
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}
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