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Awesome Realm - MainActivity (2)
package net.myanmarlinks.awesomerealm;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import net.myanmarlinks.awesomerealm.model.Author;
import net.myanmarlinks.awesomerealm.model.Category;
import net.myanmarlinks.awesomerealm.model.Post;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import io.realm.Realm;
public class MainActivity extends AppCompatActivity {
private Realm realm;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
realm = Realm.getDefaultInstance();
List<Category> categories = new ArrayList<>();
List<Author> authors = new ArrayList<>();
categories.add(new Category(getUniqueID(), "News"));
categories.add(new Category(getUniqueID(), "IT"));
categories.add(new Category(getUniqueID(), "Breaking News"));
authors.add(new Author(getUniqueID(), "Aung Aung"));
authors.add(new Author(getUniqueID(), "Baung Baung"));
authors.add(new Author(getUniqueID(), "Hla Hla"));
realm.beginTransaction();
realm.copyToRealm(categories);
realm.copyToRealmOrUpdate(authors);
realm.commitTransaction();
Category category = realm.where(Category.class).equalTo("id", categories.get(0).getId()).findFirst();
Author author = realm.where(Author.class).equalTo("id", authors.get(0).getId()).findFirst();
realm.beginTransaction();
Post post = realm.createObject(Post.class, getUniqueID());
post.setTitle("Hello World");
post.setCategory(category);
post.setAuthor(author);
realm.commitTransaction();
List<Post> posts = realm.where(Post.class).equalTo("author.id", author.getId()).findAll();
Log.d("POSTS", posts.get(0).getCategory().getName());
}
private String getUniqueID() {
return UUID.randomUUID().toString();
}
}
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