Merge pull request commons-app#1023 from psh/extract-and-test-category-db

Extracted and tested the database interactions from Category

Author: neslihanturan

app/src/main/java/fr/free/nrw/commons/CommonsApplication.java

@@ -22,7 +22,7 @@
 import dagger.android.DaggerApplication;
 import fr.free.nrw.commons.auth.SessionManager;
 import fr.free.nrw.commons.contributions.ContributionDao;
-import fr.free.nrw.commons.data.Category;
+import fr.free.nrw.commons.data.CategoryDao;
 import fr.free.nrw.commons.data.DBOpenHelper;
 import fr.free.nrw.commons.di.CommonsApplicationComponent;
 import fr.free.nrw.commons.di.CommonsApplicationModule;
@@ -49,15 +49,15 @@ public class CommonsApplication extends DaggerApplication {
     @Inject @Named("default_preferences") SharedPreferences defaultPrefs;
     @Inject @Named("application_preferences") SharedPreferences applicationPrefs;
     @Inject @Named("prefs") SharedPreferences otherPrefs;
-    
+
     public static final String DEFAULT_EDIT_SUMMARY = "Uploaded using Android Commons app";
-    
+
     public static final String FEEDBACK_EMAIL = "commons-app-android@googlegroups.com";
-    
+
     public static final String LOGS_PRIVATE_EMAIL = "commons-app-android-private@googlegroups.com";
-    
+
     public static final String FEEDBACK_EMAIL_SUBJECT = "Commons Android App (%s) Feedback";
-    
+
     private CommonsApplicationComponent component;
     private RefWatcher refWatcher;
 
@@ -95,7 +95,7 @@ protected RefWatcher setupLeakCanary() {
         }
         return LeakCanary.install(this);
     }
-    
+
   /**
      * Provides a way to get member refWatcher
      *
@@ -106,7 +106,7 @@ public static RefWatcher getRefWatcher(Context context) {
         CommonsApplication application = (CommonsApplication) context.getApplicationContext();
         return application.refWatcher;
     }
-    
+
     /**
     * Helps in injecting dependency library Dagger
     * @return Dagger injector
@@ -169,7 +169,7 @@ private void updateAllDatabases() {
         SQLiteDatabase db = dbOpenHelper.getWritableDatabase();
 
         ModifierSequence.Table.onDelete(db);
-        Category.Table.onDelete(db);
+        CategoryDao.Table.onDelete(db);
         ContributionDao.Table.onDelete(db);
     }
 

app/src/main/java/fr/free/nrw/commons/category/CategorizationFragment.java

@@ -37,6 +37,7 @@
 import dagger.android.support.DaggerFragment;
 import fr.free.nrw.commons.R;
 import fr.free.nrw.commons.data.Category;
+import fr.free.nrw.commons.data.CategoryDao;
 import fr.free.nrw.commons.mwapi.MediaWikiApi;
 import fr.free.nrw.commons.upload.MwVolleyApi;
 import fr.free.nrw.commons.utils.StringSortingUtils;
@@ -79,7 +80,7 @@ public class CategorizationFragment extends DaggerFragment {
     private final CategoriesAdapterFactory adapterFactory = new CategoriesAdapterFactory(item -> {
         if (item.isSelected()) {
             selectedCategories.add(item);
-            updateCategoryCount(item, databaseClient);
+            updateCategoryCount(item);
         } else {
             selectedCategories.remove(item);
         }
@@ -261,7 +262,7 @@ private Observable<CategoryItem> titleCategories() {
     }
 
     private Observable<CategoryItem> recentCategories() {
-        return Observable.fromIterable(Category.recentCategories(databaseClient, SEARCH_CATS_LIMIT))
+        return Observable.fromIterable(new CategoryDao(databaseClient).recentCategories(SEARCH_CATS_LIMIT))
                 .map(s -> new CategoryItem(s, false));
     }
 
@@ -311,24 +312,17 @@ private boolean containsYear(String item) {
                 || item.matches("(.*)needing(.*)") || item.matches("(.*)taken on(.*)"));
     }
 
-    private void updateCategoryCount(CategoryItem item, ContentProviderClient client) {
-        Category cat = lookupCategory(item.getName());
-        cat.incTimesUsed();
-        cat.save(client);
-    }
-
-    private Category lookupCategory(String name) {
-        Category cat = Category.find(databaseClient, name);
+    private void updateCategoryCount(CategoryItem item) {
+        CategoryDao categoryDao = new CategoryDao(databaseClient);
+        Category category = categoryDao.find(item.getName());
 
-        if (cat == null) {
-            // Newly used category...
-            cat = new Category();
-            cat.setName(name);
-            cat.setLastUsed(new Date());
-            cat.setTimesUsed(0);
+        // Newly used category...
+        if (category == null) {
+            category = new Category(null, item.getName(), new Date(), 0);
         }
 
-        return cat;
+        category.incTimesUsed();
+        categoryDao.save(category);
     }
 
     public int getCurrentSelectedCount() {

app/src/main/java/fr/free/nrw/commons/category/CategoryContentProvider.java

@@ -17,9 +17,9 @@
 import timber.log.Timber;
 
 import static android.content.UriMatcher.NO_MATCH;
-import static fr.free.nrw.commons.data.Category.Table.ALL_FIELDS;
-import static fr.free.nrw.commons.data.Category.Table.COLUMN_ID;
-import static fr.free.nrw.commons.data.Category.Table.TABLE_NAME;
+import static fr.free.nrw.commons.data.CategoryDao.Table.ALL_FIELDS;
+import static fr.free.nrw.commons.data.CategoryDao.Table.COLUMN_ID;
+import static fr.free.nrw.commons.data.CategoryDao.Table.TABLE_NAME;
 
 public class CategoryContentProvider extends ContentProvider {