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Kaushik Gopal
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feat: flush out pseudo cache example using .concat
1 parent 5a3ae78 commit 61e69ff

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5 files changed

+152
-1
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5 files changed

+152
-1
lines changed

‎app/src/main/java/com/morihacky/android/rxjava/MainFragment.java‎

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Original file line numberDiff line numberDiff line change
@@ -103,4 +103,13 @@ public void formValidation() {
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.replace(R.id.activity_main, new FormValidationCombineLatestFragment(), this.toString())
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.commit();
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}
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@OnClick(R.id.btn_demo_pseudo_cache)
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public void pseudoCacheDemo() {
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getActivity().getSupportFragmentManager()
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.beginTransaction()
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.addToBackStack(this.toString())
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.replace(R.id.activity_main, new PseudoCacheConcatFragment(), this.toString())
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.commit();
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}
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}

‎app/src/main/java/com/morihacky/android/rxjava/PseudoCacheConcatFragment.java‎

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@@ -6,21 +6,45 @@
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ArrayAdapter;
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import android.widget.ListView;
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import butterknife.ButterKnife;
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import butterknife.InjectView;
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import butterknife.OnClick;
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import com.morihacky.android.rxjava.app.R;
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import com.morihacky.android.rxjava.retrofit.Contributor;
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import com.morihacky.android.rxjava.retrofit.GithubApi;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import retrofit.RequestInterceptor;
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import retrofit.RestAdapter;
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import rx.Observable;
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import rx.Subscriber;
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import rx.Subscription;
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import rx.android.schedulers.AndroidSchedulers;
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import rx.functions.Func1;
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import timber.log.Timber;
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import static com.google.common.base.Strings.isNullOrEmpty;
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import static java.lang.String.format;
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public class PseudoCacheConcatFragment
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extends Fragment {
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@InjectView(R.id.log_list) ListView _resultList;
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private Subscription _subscription = null;
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private HashMap<String, Long> _contributionMap = null;
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private ArrayAdapter<String> _adapter;
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@Override
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public View onCreateView(LayoutInflater inflater,
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@Nullable ViewGroup container,
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@Nullable Bundle savedInstanceState) {
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View layout = inflater.inflate(R.layout.fragment_form_validation_comb_latest, container, false);
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View layout = inflater.inflate(R.layout.fragment_pseudo_cache_concat, container, false);
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ButterKnife.inject(this, layout);
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_initializeCache();
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return layout;
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}
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@@ -31,4 +55,98 @@ public void onPause() {
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_subscription.unsubscribe();
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}
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}
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@OnClick(R.id.btn_start_pseudo_cache)
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public void onDemoPseudoCacheClicked() {
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_adapter = new ArrayAdapter<>(getActivity(),
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R.layout.item_log,
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R.id.item_log,
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new ArrayList<String>());
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_resultList.setAdapter(_adapter);
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_initializeCache();
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Observable.concat(_getCachedData(), _getFreshData())
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.observeOn(AndroidSchedulers.mainThread())
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.subscribe(new Subscriber<Contributor>() {
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@Override
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public void onCompleted() {
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Timber.d("done loading all data");
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}
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@Override
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public void onError(Throwable e) {
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Timber.e(e, "arr something went wrong");
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}
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@Override
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public void onNext(Contributor contributor) {
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_contributionMap.put(contributor.login, contributor.contributions);
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_adapter.clear();
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_adapter.addAll(getListStringFromMap());
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}
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});
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}
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private List<String> getListStringFromMap() {
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List<String> list = new ArrayList<>();
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for (String username : _contributionMap.keySet()) {
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String rowLog = String.format("%s [%d]", username, _contributionMap.get(username));
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list.add(rowLog);
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}
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return list;
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}
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private Observable<Contributor> _getCachedData() {
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List<Contributor> list = new ArrayList<>();
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for (String username : _contributionMap.keySet()) {
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Contributor c = new Contributor();
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c.login = username;
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c.contributions = _contributionMap.get(username);
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list.add(c);
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}
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return Observable.from(list);
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}
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private Observable<Contributor> _getFreshData() {
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return _createGithubApi().contributors("square", "retrofit")
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.flatMap(new Func1<List<Contributor>, Observable<Contributor>>() {
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@Override
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public Observable<Contributor> call(List<Contributor> contributors) {
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return Observable.from(contributors);
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}
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});
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}
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private GithubApi _createGithubApi() {
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RestAdapter.Builder builder = new RestAdapter.Builder().setEndpoint("https://api.github.com/");
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//.setLogLevel(RestAdapter.LogLevel.FULL);
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final String githubToken = getResources().getString(R.string.github_oauth_token);
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if (!isNullOrEmpty(githubToken)) {
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builder.setRequestInterceptor(new RequestInterceptor() {
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@Override
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public void intercept(RequestFacade request) {
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request.addHeader("Authorization", format("token %s", githubToken));
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}
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});
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}
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return builder.build().create(GithubApi.class);
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}
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private void _initializeCache() {
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_contributionMap = new HashMap<>();
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_contributionMap.put("JakeWharton", 0l);
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_contributionMap.put("pforhan", 0l);
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_contributionMap.put("edenman", 0l);
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_contributionMap.put("swankjesse", 0l);
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_contributionMap.put("bruceLee", 0l);
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}
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}

‎app/src/main/res/layout/fragment_main.xml‎

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@@ -62,5 +62,11 @@
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android:layout_height="wrap_content"
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android:layout_width="match_parent"
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android:text="@string/btn_demo_form_validation_combinel"/>
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<Button
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android:id="@+id/btn_demo_pseudo_cache"
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android:layout_height="wrap_content"
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android:layout_width="match_parent"
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android:text="@string/btn_demo_pseudo_cache"/>
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</LinearLayout>
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</ScrollView>

‎app/src/main/res/layout/fragment_pseudo_cache_concat.xml‎

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@@ -1,7 +1,24 @@
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<LinearLayout
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android:baselineAligned="false"
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android:orientation="vertical"
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android:layout_height="match_parent"
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android:layout_width="match_parent"
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xmlns:android="http://schemas.android.com/apk/res/android"
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>
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<Button
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android:id="@+id/btn_start_pseudo_cache"
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android:layout_gravity="center"
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android:layout_height="wrap_content"
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android:layout_width="wrap_content"
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android:text="Start disk > network call"
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android:layout_margin="30dp"
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/>
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<ListView
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android:id="@+id/log_list"
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android:layout_height="wrap_content"
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android:layout_width="match_parent"
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/>
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</LinearLayout>

‎app/src/main/res/values/strings.xml‎

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Original file line numberDiff line numberDiff line change
@@ -15,6 +15,7 @@
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<string name="btn_demo_polling">Polling with RxJava</string>
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<string name="btn_demo_rxbus">Event Bus with RxJava</string>
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<string name="btn_demo_form_validation_combinel">Form Validation with CombineLatest</string>
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<string name="btn_demo_pseudo_cache">Pseudo cache using concat</string>
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<string name="msg_demo_concurrency_schedulers">This is a demo of how long running operations can be offloaded to a background thread. After the operation is done, we resume back on the main thread. All using RxJava! \n\n To really see this shine. Hit the button multiple times and see how the button click which is a ui operation is never blocked because the long operation only runs in the background</string>
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<string name="msg_demo_buffer">This is a demo of how events can be accumulated using the "buffer" operation. Tap the button below repetitively and you will notice in the logs that button taps are collected over a span of 2s and printed below.</string>

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