Created
July 11, 2017 18:51
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Awesome Realm - MainActivity (2)
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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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