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public class Article {

    private int articleId;
    private String title;
    private String content;

    public Article(String title, String content) {
        this.title = title;
        this.content = content;
    }

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dependencies {
    ...
    // Room components
    implementation "androidx.room:room-runtime:2.2.5"
    annotationProcessor "androidx.room:room-compiler:2.2.5"
    androidTestImplementation "androidx.room:room-testing:2.2.5"

    // Lifecycle components
    implementation "androidx.lifecycle:lifecycle-extensions:2.2.0"

zijianjoy

import androidx.lifecycle.LiveData;
import androidx.room.Dao;
import androidx.room.Insert;
import androidx.room.OnConflictStrategy;
import androidx.room.Query;

import java.util.List;

@Dao
interface ArticleDao {

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// Define database class which takes {@code Article} as table schema.
@Database(entities = Article.class, version = 1, exportSchema = false)
abstract class ArticleRoomDatabase extends RoomDatabase {

    // APIs for accessing table data.
    public abstract ArticleDao articleDao();

    private static volatile ArticleRoomDatabase SINGLETON;

    private static final int NUMBER_OF_THREADS = 4;

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components:
  comp-convert-experiment-spec-to-str:
    executorLabel: exec-convert-experiment-spec-to-str
    inputDefinitions:
      parameters:
        experiment_spec_json:
          parameterType: STRUCT
    outputDefinitions:
      parameters:
        experiment_spec_str_output:

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components:
  comp-args-generator:
    executorLabel: exec-args-generator
    outputDefinitions:
      parameters:
        Output:
          parameterType: LIST
  comp-for-loop-1:
    dag:
      tasks: