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sourceSets {
 
  ...
  
  val androidMain by getting {
      dependencies {
          implementation("androidx.activity:activity-compose:1.7.2")
          implementation("androidx.appcompat:appcompat:1.6.1")
          implementation("androidx.core:core-ktx:1.10.1")
      }

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  kotlin {
  
    ...
  
    sourceSets {
          val commonTest by getting {
              dependencies {
                  implementation(kotlin("test"))
              }
          }

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    kotlin {

      // Android
      jvm {
          compilations.all {
              kotlinOptions.jvmTarget = "1.8"
          }
          withJava()
          testRuns["test"].executionTask.configure {
              useJUnitPlatform()

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pluginManagement {
    repositories {
        google()
        gradlePluginPortal()
        mavenCentral()
    }
}

dependencyResolutionManagement {
    repositories {

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plugins {
    kotlin("multiplatform") version "1.9.0"
}

kotlin {
  // Targets
  
  // Source Sets
}

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@Entity
public class Product {
    // productId, name, price, @Ignore image
    @TypeConverters(value = SQLTypeConverters.class)
    @ColumnInfo(defaultValue = "CURRENT_TIMESTAMP")
    public Date timestamp;

    public Product(long productId, String name, double price) {
        this.productId = productId;
        this.name = name;

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public class SQLTypeConverters {

    @TypeConverter
    public Date fromTimestamp(String value) {
        Date defaultDate = new Date();
        SimpleDateFormat format = new SimpleDateFormat();
        try {
            return value.equals("") ? defaultDate : format.parse(value);
        } catch (ParseException e) {
            e.printStackTrace();

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@Entity
public class Product {
    // ... productId, name, price, @Ignore image
    @ColumnInfo(defaultValue = "CURRENT_TIMESTAMP")
    public String timestamp;

    public Product(long productId, String name, double price) {
        this.productId = productId;
        this.name = name;
        this.price = price;

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Room
  .databaseBuilder(this, Database.class, "database")
  .addMigrations(Migrations.MIGRATION_1_2)
  .fallbackToDestructiveMigration()
  .build();

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Room
  .databaseBuilder(this, Database.class, "database")
  .addMigrations(Migrations.MIGRATION_1_2)
  .build();