commonTest.com.fraktalio.fmodel.domain.examples.numbers.api.api.kt Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of application-arrow Show documentation

Fmodel provides just enough tactical Domain-Driven Design patterns, optimised for Event Sourcing and CQRS. The application library orchestrates the execution of the logic by loading state, executing domain components and storing new state. It is an Arrow (FP library for Kotlin) flavored implementation.

There is a newer version: 3.6.0

Show newest version

/*
 * Copyright (c) 2021 Fraktalio D.O.O. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.fraktalio.fmodel.domain.examples.numbers.api

import kotlin.jvm.JvmInline

@JvmInline
value class Description(val get: String)

@JvmInline
value class NumberValue(val get: Int)


// ############ Commands ###############
abstract class NumberCommand {
    abstract val description: Description
    abstract val value: NumberValue

    sealed class EvenNumberCommand : NumberCommand() {
        data class AddEvenNumber(
            override val description: Description,
            override val value: NumberValue
        ) : EvenNumberCommand()

        data class SubtractEvenNumber(
            override val description: Description,
            override val value: NumberValue
        ) : EvenNumberCommand()
    }


    sealed class OddNumberCommand : NumberCommand() {
        data class AddOddNumber(
            override val description: Description,
            override val value: NumberValue
        ) : OddNumberCommand()

        data class SubtractOddNumber(
            override val description: Description,
            override val value: NumberValue
        ) : OddNumberCommand()
    }
}


// ############ Events ###############

abstract class NumberEvent {
    abstract val description: Description
    abstract val value: NumberValue

    sealed class EvenNumberEvent : NumberEvent() {
        data class EvenNumberAdded(
            override val description: Description,
            override val value: NumberValue
        ) : EvenNumberEvent()

        data class EvenNumberSubtracted(
            override val description: Description,
            override val value: NumberValue
        ) : EvenNumberEvent()
    }

    sealed class OddNumberEvent : NumberEvent() {
        data class OddNumberAdded(
            override val description: Description,
            override val value: NumberValue
        ) : OddNumberEvent()

        data class OddNumberSubtracted(
            override val description: Description,
            override val value: NumberValue
        ) : OddNumberEvent()
    }
}

// ############ State ###############
sealed class NumberState {
    abstract val description: Description
    abstract val value: NumberValue
}

data class EvenNumberState(
    override val description: Description,
    override val value: NumberValue
) : NumberState()

data class OddNumberState(
    override val description: Description,
    override val value: NumberValue
) : NumberState()