chyrta

import android.arch.persistence.room.Database;
import android.arch.persistence.room.RoomDatabase;

@Database(version = 3, entities = {
        TokenEntity.class
})
public abstract class MyDatabsae extends RoomDatabase {
    public abstract TokenDao tokenDao();
}

chyrta

import android.arch.persistence.room.Dao;
import android.arch.persistence.room.Insert;
import android.arch.persistence.room.OnConflictStrategy;
import android.arch.persistence.room.Query;

@Dao
public interface ApiTokenDao {

    @Query("SELECT * FROM token LIMIT 1")
    TokenEntity getToken();

chyrta

import android.arch.persistence.room.ColumnInfo;
import android.arch.persistence.room.Entity;
import android.arch.persistence.room.PrimaryKey;

@Entity(tableName = "token")
public class TokenEntity {

    @PrimaryKey(autoGenerate = true)
    public int id;

chyrta

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;

import com.j256.ormlite.android.apptools.OrmLiteSqliteOpenHelper;
import com.j256.ormlite.dao.Dao;
import com.j256.ormlite.support.ConnectionSource;
import com.j256.ormlite.table.TableUtils;

import java.sql.SQLException;

chyrta

public interface TokenDao {

    TokenEntity get();

    void save(TokenEntity token);
}

chyrta

@Singleton
public final class TokenDaoImpl implements TokenDao {

    private MyDatabase db;

    @Inject public TokenDaoImpl(MyDatabase database) {
        this.db = database;
    }

    @Override public synchronized TokenEntity get() {

chyrta

import com.j256.ormlite.field.DatabaseField;
import com.j256.ormlite.table.DatabaseTable;

@DatabaseTable(tableName = "token")
public final class TokenEntity {

    @DatabaseField(id = true) public String id;
    @DatabaseField public            String apiToken;

    public TokenEntity() {