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• KPropertyExtensions.kt

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com.lightningkite.lightningdb.KPropertyExtensions.kt Maven / Gradle / Ivy

package com.lightningkite.lightningdb

import com.lightningkite.khrysalis.SharedCode
import kotlin.reflect.KProperty1

private val KProperty1_setCopyImplementation = HashMap, (Any?, Any?)->Any?>()
fun  KProperty1.setCopyImplementation(impl: (original: T, value: V) -> T) {
    @Suppress("UNCHECKED_CAST")
    KProperty1_setCopyImplementation[this] = impl as (Any?, Any?)->Any?
}
fun  KProperty1.setCopy(original: T, value: V): T {
    @Suppress("UNCHECKED_CAST")
    val impl = KProperty1_setCopyImplementation[this] ?: throw Error("setCopy implementation not present for $this.  Did you forget to call prepareModels()?")
    return impl(original, value) as T
}

val  DataClassPathPartial.compare: Comparator get() = compareBy { this.getAny(it) as? Comparable<*> }