LoginSignup
0
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

@ryouta33(亮汰 脇坂)

a-5-1-2(3).Realm DBのデータ保存と更新、削除(配列以外、配列)

Last updated at Posted at 2024-05-10

a-5-1-2(3).Realm DBのデータ保存と更新、削除(配列以外、配列)

目標設定

一覧に戻る

Github

テスト実装

RealmTestActivity.kt
package com.example.androidtest

import android.os.Bundle
import android.util.Log
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import com.example.androidtest.databinding.ActivityRealmTestBinding
import io.realm.kotlin.ext.query
import kotlinx.coroutines.DelicateCoroutinesApi
import kotlin.math.log

class RealmTestActivity : AppCompatActivity() {
    private lateinit var binding: ActivityRealmTestBinding

    @OptIn(DelicateCoroutinesApi::class)
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityRealmTestBinding.inflate(layoutInflater)
        val view = binding.root
        setContentView(view)

        val dogResult = RealmTestService.realm.query<Dog>(query = "dogId == $0", args = arrayOf(2))
            .find()
        var dogName = "いない"
        if (dogResult.size > 0) {
            dogName = dogResult.first().name
        }

        val personNum = RealmTestService.realm.query<Person>().find().size
        Log.d("Realm情報", "抽出したDog名: $dogName 初期のPersonの数: $personNum")
        logOfRealm()
        // showMessage("抽出したDog名: $dogName 初期のPersonの数: $personNum")

        binding.addPerson.stateListAnimator = null
        binding.addPerson.setOnClickListener {
            RealmTestService.realm.writeBlocking {
                val personResult = this.query<Person>(
                    query = "personId == $0", args = arrayOf(2)).find()
                if (personResult.size == 0) {
                    copyToRealm(Person().apply {
                        personId = 2
                        name = "追加した人"
                        age = 30
                    })
                }
            }
            logOfRealm()
        }

        binding.updatePerson.stateListAnimator = null
        binding.updatePerson.setOnClickListener {
            RealmTestService.realm.writeBlocking {
                val personResult = this.query<Person>(
                    query = "personId == $0", args = arrayOf(2)).find()
                if (personResult.size > 0) {
                    personResult.first().name = "更新した人"
                }
            }
            logOfRealm()
        }

        binding.deletePerson.stateListAnimator = null
        binding.deletePerson.setOnClickListener {
            RealmTestService.realm.writeBlocking {
                val personResult = this.query<Person>(
                    query = "personId == $0", args = arrayOf(2)).find()
                if (personResult.size > 0) {
                    delete(personResult.first())
                }
            }
            logOfRealm()
        }

        binding.addPersonTask.stateListAnimator = null
        binding.addPersonTask.setOnClickListener {
            RealmTestService.realm.writeBlocking {
                val personResult = this.query<Person>(
                    query = "personId == $0", args = arrayOf(1)).find()
                var taskId = 0
                if (personResult.first().tasks.size > 0) {
                    val maxTask = personResult.first().tasks.maxBy { it.taskId!! }
                    taskId = maxTask.taskId!! + 1
                }
                personResult.first().tasks.add(Task().apply {
                    this.taskId = taskId
                    name = "追加したタスク"
                    finished = false
                })
            }
            logOfRealm()
        }

        binding.updatePersonTask.stateListAnimator = null
        binding.updatePersonTask.setOnClickListener {
            RealmTestService.realm.writeBlocking {
                val personResult = this.query<Person>(
                    query = "personId == $0", args = arrayOf(1)).find()
                if (personResult.size > 0 && personResult.first().tasks.size > 0) {
                    val minTask = personResult.first().tasks.minBy { it.taskId!! }
                    minTask.finished = true
                }
            }
            logOfRealm()
        }

        binding.deletePersonTask.stateListAnimator = null
        binding.deletePersonTask.setOnClickListener {
            RealmTestService.realm.writeBlocking {
                val personResult = query<Person>(
                    query = "personId == $0", args = arrayOf(1)).find()
                if (personResult.size > 0) {
                    val tasks = personResult.first().tasks.filter { it.finished }
                    personResult.first().tasks.removeAll(tasks)
                }
            }
            logOfRealm()
        }
    }

//    private fun showMessage(message: String) {
//        val builder = AlertDialog.Builder(this)
//        builder.setTitle("Realmの検証")
//            .setMessage(message)
//            .setPositiveButton("OK") { _, _ ->
//            }
//        builder.create()
//        builder.show()
//    }

    private fun logOfRealm() {
        val parsonResult = RealmTestService.realm.query<Person>().find()
        Log.d("Realm情報", "---Person---")
        for (i in 0 ..< parsonResult.size) {
            val parson = parsonResult[i]
            Log.d("Realm情報",
                "${parson.personId} ${parson.name} ${parson.age}")
            if (parson.tasks.size > 0) {
                Log.d("Realm情報", "---Person>Task---")
            }
            for (j in 0..<parson.tasks.size) {
                val task = parson.tasks[j]
                Log.d("Realm情報",
                    "${task.taskId} ${task.name} ${task.finished}")
            }
        }

        Log.d("Realm情報", "---Dog---")
        val dogResult = RealmTestService.realm.query<Dog>().find()
        for(i in 0 ..< dogResult.size) {
            val dog = dogResult[i]
            Log.d("Realm情報",
                "${dog.dogId} ${dog.name} ${dog.age}")
        }
    }
}
activity_realm_test.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginStart="8dp"
        android:layout_marginTop="4dp"
        android:layout_marginEnd="8dp"
        android:layout_marginBottom="4dp">

        <TextView
            android:id="@+id/text_1_text_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:padding="0dp"
            android:text="Realmの検証"
            android:textSize="21sp"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            tools:ignore="HardcodedText" />

        <Space
            android:layout_width="match_parent"
            android:layout_height="4dp" />

        <LinearLayout
            android:orientation="horizontal"
            android:layout_width="match_parent"
            android:layout_height="150dp"
            >

            <Button
                android:id="@+id/add_person"
                android:layout_weight="1"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:background="@drawable/style3_button_background"
                app:backgroundTint="@null"
                android:text="Personの追加(personId=2)"
                android:padding="0dp"
                android:layout_marginEnd="8dp"
                android:textSize="11sp"
                tools:ignore="HardcodedText"
                style="?android:attr/buttonBarButtonStyle" />

            <Button
                android:id="@+id/update_person"
                android:layout_weight="1"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:background="@drawable/style3_button_background"
                app:backgroundTint="@null"
                android:text="Personの更新(personId=2, 名前を変更する)"
                android:padding="0dp"
                android:layout_marginEnd="8dp"
                android:textSize="11sp"
                tools:ignore="HardcodedText"
                style="?android:attr/buttonBarButtonStyle" />

            <Button
                android:id="@+id/delete_person"
                android:layout_weight="1"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:background="@drawable/style3_button_background"
                app:backgroundTint="@null"
                android:text="Personの削除(personId=2)"
                android:padding="0dp"
                android:textSize="11sp"
                tools:ignore="HardcodedText"
                style="?android:attr/buttonBarButtonStyle" />
        </LinearLayout>

        <Space
            android:layout_width="match_parent"
            android:layout_height="8dp" />

        <LinearLayout
            android:orientation="horizontal"
            android:layout_width="match_parent"
            android:layout_height="150dp"
            >

            <Button
                android:id="@+id/add_person_task"
                android:layout_weight="1"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:background="@drawable/style3_button_background"
                app:backgroundTint="@null"
                android:text="Personのtaskの追加(personId=1, タスクIDを最大+1)"
                android:padding="0dp"
                android:layout_marginEnd="8dp"
                android:textSize="11sp"
                tools:ignore="HardcodedText"
                style="?android:attr/buttonBarButtonStyle" />

            <Button
                android:id="@+id/update_person_task"
                android:layout_weight="1"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:background="@drawable/style3_button_background"
                app:backgroundTint="@null"
                android:text="Personのtaskの更新(personId=1, タスクIDの最小のレコードをfinished=trueにする)"
                android:padding="0dp"
                android:layout_marginEnd="8dp"
                android:textSize="11sp"
                tools:ignore="HardcodedText"
                style="?android:attr/buttonBarButtonStyle" />

            <Button
                android:id="@+id/delete_person_task"
                android:layout_weight="1"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:background="@drawable/style3_button_background"
                app:backgroundTint="@null"
                android:text="Personのtaskの削除(personId=1 and finished=true)"
                android:padding="0dp"
                android:textSize="11sp"
                tools:ignore="HardcodedText"
                style="?android:attr/buttonBarButtonStyle" />
        </LinearLayout>

    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
RealmTestService.kt
package com.example.androidtest

import android.util.Log
import io.realm.kotlin.Realm
import io.realm.kotlin.RealmConfiguration
import io.realm.kotlin.ext.realmListOf
import io.realm.kotlin.types.EmbeddedRealmObject
import io.realm.kotlin.types.RealmList
import io.realm.kotlin.types.RealmObject
import io.realm.kotlin.types.annotations.PrimaryKey

class Dog: RealmObject {
    @PrimaryKey
    var dogId: Int? = null
    var name: String = ""
    var age: Int = 0
}

class Person: RealmObject {
    @PrimaryKey
    var personId: Int? = null
    var name: String = ""
    var age: Int = 0
    var tasks: RealmList<Task> = realmListOf()
}

class Task: EmbeddedRealmObject {
    var taskId: Int? = null
    var name: String = ""
    var finished: Boolean = false
}

object RealmTestService {
    private var localRealm: Realm? = null

    val realm: Realm
        get() {
            if (localRealm != null) {
                return localRealm!!
            }

            val config = RealmConfiguration.Builder(
                schema = setOf(Dog::class, Person::class, Task::class))
                // 64バイトのキーを動的に作成する必要あり
                // キーの保存先も安全な場所に保存する必要あり
                // .encryptionKey(Base64.decode("abc...", Base64.DEFAULT)) // 暗号化キー
                .initialData {// DBの初期値
                    copyToRealm(Dog().apply {
                        dogId = 0
                        name = "いぬ"
                        age = 3
                    })
                    copyToRealm(Dog().apply {
                        dogId = 1
                        name = "うさぎ"
                        age = 2
                    })
                    copyToRealm(Dog().apply {
                        dogId = 2
                        name = "とり"
                        age = 2
                    })
                    copyToRealm(Person().apply {
                        personId = 0
                        name = "りょうたくん"
                        age = 20
                    })
                    copyToRealm(Person().apply {
                        personId = 1
                        name = "新たなりょうたくん"
                        age = 2
                        tasks = realmListOf(
                            Task().apply {
                                taskId = 0
                                name = "カレンダー作成"
                                finished = false
                            },
                            Task().apply {
                                taskId = 1
                                name = "アプリ申請"
                                finished = false
                            }
                        )
                    })
                }.build()

            localRealm = Realm.open(config)
            Log.d("Realm情報", "開いたRealm ${localRealm!!.configuration.name}")

            return localRealm!!
        }
}

スクリーンショット 2024-05-10 12.26.07.png

スクリーンショット 2024-05-10 12.26.24.png

スクリーンショット 2024-05-10 12.26.41.png

スクリーンショット 2024-05-10 12.27.04.png

スクリーンショット 2024-05-10 12.27.13.png

スクリーンショット 2024-05-10 12.27.20.png

0
0
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
Sign upLogin
0
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?