Merge branch 'master' into classes

.idea/misc.xml

@@ -24,7 +24,7 @@
       </value>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" project-jdk-name="1.8 (1)" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/src/main/AndroidManifest.xml

@@ -92,10 +92,6 @@
             android:exported="false"></service>
 
 
-        <provider
-            android:name="in.ac.iitb.gymkhana.iitbapp.data.IITBAppContentProvider"
-            android:authorities="in.ac.iitb.gymkhana.iitbapp"
-            android:exported="false" />
     </application>
 
 </manifest>
\ No newline at end of file

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/data/AppDatabase.java

+package in.ac.iitb.gymkhana.iitbapp.data;
+
+import android.arch.persistence.room.Database;
+import android.arch.persistence.room.Room;
+import android.arch.persistence.room.RoomDatabase;
+import android.arch.persistence.room.TypeConverters;
+import android.content.Context;
+
+/**
+ * Created by mrunz on 14/3/18.
+ */
+
+@Database(entities = {Event.class, Body.class,Venue.class}, version = 1)
+@TypeConverters({Converters.class})
+public abstract class AppDatabase extends RoomDatabase {
+
+    private static AppDatabase INSTANCE;
+
+    public abstract DbDao dbDao();
+
+    public static AppDatabase getAppDatabase(Context context) {
+        if (INSTANCE == null) {
+            INSTANCE =
+                    Room.databaseBuilder(context.getApplicationContext(), AppDatabase.class, "database")
+                            // allow queries on the main thread.
+                            // Don't do this on a real app! See PersistenceBasicSample for an example.
+                            .allowMainThreadQueries()
+                            .build();
+        }
+        return INSTANCE;
+    }
+
+    public static void destroyInstance() {
+        INSTANCE = null;
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/data/Body.java

@@ -2,13 +2,17 @@ package in.ac.iitb.gymkhana.iitbapp.data;
 
 import android.arch.persistence.room.ColumnInfo;
 import android.arch.persistence.room.Entity;
+import android.arch.persistence.room.PrimaryKey;
 
 import com.google.gson.annotations.SerializedName;
 
 import java.util.List;
 
-@Entity
+@Entity(tableName = "bodies")
 class Body {
+    @PrimaryKey(autoGenerate = true)
+    int db_id;
+
     @ColumnInfo(name = "id")
     @SerializedName("id")
     String bodyID;
@@ -108,4 +112,4 @@ class Body {
     public void setBodyFollowersCount(int bodyFollowersCount) {
         this.bodyFollowersCount = bodyFollowersCount;
     }
-}
+}
\ No newline at end of file

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/data/Converters.java

+package in.ac.iitb.gymkhana.iitbapp.data;
+
+import android.arch.persistence.room.TypeConverter;
+
+import com.google.gson.Gson;
+import com.google.gson.reflect.TypeToken;
+
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Created by mrunz on 14/3/18.
+ */
+
+public class Converters {
+    @TypeConverter
+    public static List<Event> eventsfromString(String value) {
+        Type listType = new TypeToken<List<Event>>() {}.getType();
+        return new Gson().fromJson(value, listType);
+    }
+
+    @TypeConverter
+    public static String stringfromEvents(List<Event> list) {
+        Gson gson = new Gson();
+        String json = gson.toJson(list);
+        return json;
+    }
+
+    @TypeConverter
+    public static List<User> usersfromString(String value) {
+        Type listType = new TypeToken<List<User>>() {}.getType();
+        return new Gson().fromJson(value, listType);
+    }
+
+    @TypeConverter
+    public static String stringfromUsers(List<User> list) {
+        Gson gson = new Gson();
+        String json = gson.toJson(list);
+        return json;
+    }
+    @TypeConverter
+    public static List<Venue> venuesfromString(String value) {
+        Type listType = new TypeToken<List<Venue>>() {}.getType();
+        return new Gson().fromJson(value, listType);
+    }
+
+    @TypeConverter
+    public static String stringfromVenues(List<Venue> list) {
+        Gson gson = new Gson();
+        String json = gson.toJson(list);
+        return json;
+    }
+    @TypeConverter
+    public static List<Body> bodiesfromString(String value) {
+        Type listType = new TypeToken<List<Body>>() {}.getType();
+        return new Gson().fromJson(value, listType);
+    }
+
+    @TypeConverter
+    public static String stringfromBodies(List<Body> list) {
+        Gson gson = new Gson();
+        String json = gson.toJson(list);
+        return json;
+    }
+}
\ No newline at end of file

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/data/DatabaseContract.java

-package in.ac.iitb.gymkhana.iitbapp.data;
-
-import android.net.Uri;
-import android.provider.BaseColumns;
-
-public class DatabaseContract {
-    public static final String CONTENT_AUTHORITY = "in.ac.iitb.gymkhana.iitbapp";
-    public static final Uri BASE_CONTENT_URI = Uri.parse("content://" + CONTENT_AUTHORITY);
-    public static final String PATH_MAP = "map";
-    public static final String PATH_USER_PROFILE = "userProfile";
-    public static final String PATH_USER_FOLLOWERS = "userFollowers";
-    public static final String PATH_USER_FOLLOWS = "userFollows";
-    public static final String PATH_NEWS_FEED = "newsFeed";
-
-    public static final class MapEntry implements BaseColumns {
-        public static final Uri CONTENT_URI = BASE_CONTENT_URI.buildUpon()
-                .appendPath(PATH_MAP)
-                .build();
-        public static final String TABLE_NAME = "map";
-        public static final String COLUMN_LATITUDE = "latitude";
-        public static final String COLUMN_LONGITUDE = "longitude";
-        public static final String COLUMN_NAME = "name";
-        public static final String COLUMN_TYPE = "type";
-
-
-    }
-
-    public static final class UserProfileEntry implements BaseColumns {
-        public static final Uri CONTENT_URI = BASE_CONTENT_URI.buildUpon()
-                .appendPath(PATH_USER_PROFILE)
-                .build();
-        public static final String TABLE_NAME = "userProfile";
-        public static final String COLUMN_USER_NAME = "user_name";
-        public static final String COLUMN_USER_ROLLNO = "user_rollno";
-        public static final String COLUMN_USER_POR = "user_por";
-        public static final String COLUMN_USER_PROFILE_PICTURE = "user_profile_picture";
-        public static final String COLUMN_USER_HOSTELNO = "user_hostelno";
-        public static final String COLUMN_USER_ABOUTME = "user_aboutme";
-        public static final String COLUMN_USER_FOLLOWING_COUNT = "user_following_count";
-        public static final String COLUMN_USER_FOLLOWERS_COUNT = "user_follwers_count";
-        public static final String COLUMN_USER_EVENTS_COUNT = "user_events_count";
-        public static final String COLUMN_IS_FOLLOWED = "isFollowed";
-        public static final String COLUMN_FOLLOWS_YOU = "followsYou";
-        public static final String COLUMN_USER_ROOM_NO = "user_roomno";
-        public static final String COLUMN_USER_PHONE_NO = "user_phoneno";
-
-    }
-
-    public static final class UserFollowersEntry implements BaseColumns {
-        public static final Uri CONTENT_URI = BASE_CONTENT_URI.buildUpon()
-                .appendPath(PATH_USER_FOLLOWERS)
-                .build();
-        public static final String TABLE_NAME = "userFollowers";
-        public static final String COLUMN_USER_PROFILE_PICTURE = "user_profile_picture";
-        public static final String COLUMN_USER_NAME = "user_name";
-        public static final String COLUMN_USER_PROFILE = "userProfile";
-
-    }
-
-    public static final class UserFollowsEntry implements BaseColumns {
-        public static final Uri CONTENT_URI = BASE_CONTENT_URI.buildUpon()
-                .appendPath(PATH_USER_FOLLOWS)
-                .build();
-        public static final String TABLE_NAME = "userFollows";
-        public static final String COLUMN_USER_PROFILE_PICTURE = "user_profile_picture";
-        public static final String COLUMN_USER_NAME = "user_name";
-        public static final String COLUMN_USER_PROFILE = "userProfile";
-
-
-    }
-
-    public static final class NewsFeedEntry implements BaseColumns {
-        public static final Uri CONTENT_URI = BASE_CONTENT_URI.buildUpon()
-                .appendPath(PATH_NEWS_FEED)
-                .build();
-        public static final String TABLE_NAME = "newsFeed";
-        public static final String COLUMN_EVENT_NAME = "event_name";
-        public static final String COLUMN_EVENT_DESCRIPTION = "event_description";
-        public static final String COLUMN_EVENT_IMAGE = "event_image";
-        public static final String COLUMN_EVENT_CREATOR_NAME = "event_creator_name";
-        public static final String COLUMN_EVENT_CREATOR_ID = "event_creator_id";
-        public static final String COLUMN_EVENT_GOING_STATUS = "event_going_status";
-
-
-    }
-
-
-}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/data/DatabaseHelper.java

-package in.ac.iitb.gymkhana.iitbapp.data;
-
-import android.content.Context;
-import android.database.sqlite.SQLiteDatabase;
-import android.database.sqlite.SQLiteOpenHelper;
-
-
-public class DatabaseHelper extends SQLiteOpenHelper {
-    private static final String DATABASE_NAME = "IITBAppDb.db";
-    private static final int VERSION = 1;
-
-    DatabaseHelper(Context context) {
-        super(context, DATABASE_NAME, null, VERSION);
-    }
-
-    @Override
-    public void onCreate(SQLiteDatabase db) {
-        final String CREATE_TABLE_MAP = "CREATE TABLE " + DatabaseContract.MapEntry.TABLE_NAME + " (" +
-                DatabaseContract.MapEntry._ID + " INTEGER PRIMARY KEY, " +
-                DatabaseContract.MapEntry.COLUMN_LATITUDE + " DOUBLE NOT NULL, " +
-                DatabaseContract.MapEntry.COLUMN_LONGITUDE + " DOUBLE NOT NULL, " +
-                DatabaseContract.MapEntry.COLUMN_NAME + " TEXT NOT NULL, " +
-                DatabaseContract.MapEntry.COLUMN_TYPE + " TEXT NOT NULL);";
-
-        final String CREATE_TABLE_USER_PROFILE = "CREATE TABLE " + DatabaseContract.UserProfileEntry.TABLE_NAME + " (" +
-                DatabaseContract.UserProfileEntry._ID + " INTEGER PRIMARY KEY, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_NAME + " TEXT NOT NULL, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_ROLLNO + " TEXT NOT NULL, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_POR + " TEXT NOT NULL, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_PROFILE_PICTURE + " TEXT NOT NULL, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_HOSTELNO + " TEXT NOT NULL, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_ABOUTME + " TEXT NOT NULL, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_FOLLOWING_COUNT + " INTEGER NOT NULL, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_FOLLOWERS_COUNT + " INTEGER NOT NULL, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_EVENTS_COUNT + " INTEGER NOT NULL, " +
-                DatabaseContract.UserProfileEntry.COLUMN_IS_FOLLOWED + " BOOLEAN, " +
-                DatabaseContract.UserProfileEntry.COLUMN_FOLLOWS_YOU + " BOOLEAN, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_ROOM_NO + " TEXT, " +
-                DatabaseContract.UserProfileEntry.COLUMN_USER_PHONE_NO + " TEXT);";
-
-        final String CREATE_TABLE_USER_FOLLOWERS = "CREATE TABLE " + DatabaseContract.UserFollowersEntry.TABLE_NAME + " (" +
-                DatabaseContract.UserFollowersEntry._ID + " INTEGER PRIMARY KEY, " +
-                DatabaseContract.UserFollowersEntry.COLUMN_USER_PROFILE_PICTURE + " TEXT NOT NULL, " +
-                DatabaseContract.UserFollowersEntry.COLUMN_USER_NAME + " TEXT NOT NULL, " +
-                DatabaseContract.UserFollowersEntry.COLUMN_USER_PROFILE + " TEXT NOT NULL);";
-
-        final String CREATE_TABLE_USER_FOLLOWS = "CREATE TABLE " + DatabaseContract.UserFollowsEntry.TABLE_NAME + " (" +
-                DatabaseContract.UserFollowsEntry._ID + " INTEGER PRIMARY KEY, " +
-                DatabaseContract.UserFollowsEntry.COLUMN_USER_PROFILE_PICTURE + " TEXT NOT NULL, " +
-                DatabaseContract.UserFollowsEntry.COLUMN_USER_NAME + " TEXT NOT NULL, " +
-                DatabaseContract.UserFollowsEntry.COLUMN_USER_PROFILE + " TEXT NOT NULL);";
-
-        final String CREATE_TABLE_NEWS_FEED = "CREATE TABLE " + DatabaseContract.NewsFeedEntry.TABLE_NAME + " (" +
-                DatabaseContract.NewsFeedEntry._ID + " INTEGER PRIMARY KEY, " +
-                DatabaseContract.NewsFeedEntry.COLUMN_EVENT_NAME + " TEXT NOT NULL, " +
-                DatabaseContract.NewsFeedEntry.COLUMN_EVENT_DESCRIPTION + " TEXT NOT NULL, " +
-                DatabaseContract.NewsFeedEntry.COLUMN_EVENT_IMAGE + " TEXT NOT NULL, " +
-                DatabaseContract.NewsFeedEntry.COLUMN_EVENT_CREATOR_NAME + " TEXT NOT NULL, " +
-                DatabaseContract.NewsFeedEntry.COLUMN_EVENT_CREATOR_ID + " TEXT NOT NULL, " +
-                DatabaseContract.NewsFeedEntry.COLUMN_EVENT_GOING_STATUS + " INTEGER NOT NULL);";
-
-        db.execSQL(CREATE_TABLE_MAP);
-        db.execSQL(CREATE_TABLE_USER_PROFILE);
-        db.execSQL(CREATE_TABLE_USER_FOLLOWERS);
-        db.execSQL(CREATE_TABLE_USER_FOLLOWS);
-        db.execSQL(CREATE_TABLE_NEWS_FEED);
-    }
-
-    @Override
-    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
-        db.execSQL("DROP TABLE IF EXISTS " + DatabaseContract.MapEntry.TABLE_NAME);
-        db.execSQL("DROP TABLE IF EXISTS " + DatabaseContract.UserProfileEntry.TABLE_NAME);
-        db.execSQL("DROP TABLE IF EXISTS " + DatabaseContract.UserFollowersEntry.TABLE_NAME);
-        db.execSQL("DROP TABLE IF EXISTS " + DatabaseContract.UserFollowsEntry.TABLE_NAME);
-        db.execSQL("DROP TABLE IF EXISTS " + DatabaseContract.NewsFeedEntry.TABLE_NAME);
-        onCreate(db);
-    }
-}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/data/DbDao.java

+package in.ac.iitb.gymkhana.iitbapp.data;
+
+import android.arch.persistence.room.Dao;
+import android.arch.persistence.room.Delete;
+import android.arch.persistence.room.Insert;
+import android.arch.persistence.room.Query;
+
+import java.util.List;
+
+import retrofit2.http.DELETE;
+
+/**
+ * Created by mrunz on 13/3/18.
+ */
+@Dao
+public interface DbDao {
+    @Query("SELECT * FROM events")
+    List<Event> getAllEvents();
+
+    @Query("SELECT * FROM bodies")
+    List<Body> getAllBodies();
+
+    @Query("SELECT * FROM venues")
+    List<Venue> getAllVenues();
+
+    @Query("SELECT COUNT(*) from events")
+    int countEvents();
+
+    @Query("SELECT COUNT(*) from venues")
+    int countVenues();
+
+    @Query("SELECT COUNT(*) from bodies")
+    int countBodies();
+
+    @Insert
+    void insertEvents(List<Event> events);
+
+    @Insert
+    void insertBodies(List<Body> bodies);
+
+    @Insert
+    void insertVenues(List<Venue> venues);
+
+    @Delete
+    void deleteEvent(Event event);
+
+    @Delete
+    void deleteVenue(Venue venue);
+
+    @Delete
+    void deleteBody(Body body);
+
+    @Query("DELETE from events")
+    void deleteEvents();
+
+    @Query("DELETE from venues")
+    void deleteVenues();
+
+    @Query("DELETE from bodies")
+    void deleteBodies();
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/data/Event.java

 package in.ac.iitb.gymkhana.iitbapp.data;
 
 import android.arch.persistence.room.ColumnInfo;
+import android.arch.persistence.room.Entity;
+import android.arch.persistence.room.PrimaryKey;
 
 import com.google.gson.annotations.SerializedName;
 
 import java.sql.Timestamp;
 import java.util.List;
 
+@Entity(tableName = "events")
+
 public class Event {
+
+    @PrimaryKey(autoGenerate = true)
+    int db_id;
+
     @ColumnInfo(name = "id")
     @SerializedName("id")
     String eventID;

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/data/IITBAppContentProvider.java

-package in.ac.iitb.gymkhana.iitbapp.data;
-
-import android.content.ContentProvider;
-import android.content.ContentUris;
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.UriMatcher;
-import android.database.Cursor;
-import android.database.SQLException;
-import android.database.sqlite.SQLiteDatabase;
-import android.net.Uri;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-
-
-public class IITBAppContentProvider extends ContentProvider {
-    public static final int LOCS = 100;
-    public static final int LOC_WITH_ID = 101;
-    public static final int USER_PROFILES = 200;
-    public static final int USER_PROFILE_WITH_ID = 201;
-    public static final int USER_FOLLOWERS = 300;
-    public static final int USER_FOLLOWER_WITH_ID = 301;
-    public static final int USER_FOLLOWS = 400;
-    public static final int USER_FOLLOWS_WITH_ID = 401;
-    public static final int NEWS_FEED = 500;
-    public static final int NEWS_FEED_WITH_ID = 501;
-    private static final UriMatcher sUriMatcher = buildUriMatcher();
-    private DatabaseHelper databaseHelper;
-
-    public static UriMatcher buildUriMatcher() {
-        final UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH);
-        matcher.addURI(DatabaseContract.CONTENT_AUTHORITY, DatabaseContract.PATH_MAP, LOCS);
-        matcher.addURI(DatabaseContract.CONTENT_AUTHORITY, DatabaseContract.PATH_MAP + "/#", LOC_WITH_ID);
-        matcher.addURI(DatabaseContract.CONTENT_AUTHORITY, DatabaseContract.PATH_USER_PROFILE, USER_PROFILES);
-        matcher.addURI(DatabaseContract.CONTENT_AUTHORITY, DatabaseContract.PATH_USER_PROFILE + "/#", USER_PROFILE_WITH_ID);
-        matcher.addURI(DatabaseContract.CONTENT_AUTHORITY, DatabaseContract.PATH_USER_FOLLOWERS, USER_FOLLOWERS);
-        matcher.addURI(DatabaseContract.CONTENT_AUTHORITY, DatabaseContract.PATH_USER_FOLLOWERS + "/#", USER_FOLLOWER_WITH_ID);
-        matcher.addURI(DatabaseContract.CONTENT_AUTHORITY, DatabaseContract.PATH_USER_FOLLOWS, USER_FOLLOWS);
-        matcher.addURI(DatabaseContract.CONTENT_AUTHORITY, DatabaseContract.PATH_USER_FOLLOWS + "/#", USER_FOLLOWS_WITH_ID);
-        matcher.addURI(DatabaseContract.CONTENT_AUTHORITY, DatabaseContract.PATH_NEWS_FEED, NEWS_FEED);
-        matcher.addURI(DatabaseContract.CONTENT_AUTHORITY, DatabaseContract.PATH_NEWS_FEED + "/#", NEWS_FEED_WITH_ID);
-        return matcher;
-
-    }
-
-    @Override
-    public boolean onCreate() {
-        Context context = getContext();
-        databaseHelper = new DatabaseHelper(context);
-        return true;
-    }
-
-    @Nullable
-    @Override
-    public Cursor query(@NonNull Uri uri, @Nullable String[] projection, @Nullable String selection, @Nullable String[] selectionArgs, @Nullable String sortOrder) {
-        final SQLiteDatabase db = databaseHelper.getReadableDatabase();
-        int match = sUriMatcher.match(uri);
-        Cursor cursor;
-        String id;
-        String selectionArguments[];
-        switch (match) {
-            case LOCS:
-                cursor = db.query(DatabaseContract.MapEntry.TABLE_NAME,
-                        projection,
-                        selection,
-                        selectionArgs,
-                        null,
-                        null,
-                        sortOrder);
-                break;
-            case LOC_WITH_ID:
-                id = uri.getPathSegments().get(1);
-                selectionArguments = new String[]{id};
-                cursor = db.query(DatabaseContract.MapEntry.TABLE_NAME,
-                        projection,
-                        "_id=?",
-                        selectionArguments,
-                        null,
-                        null,
-                        sortOrder);
-                break;
-            case USER_PROFILES:
-                cursor = db.query(DatabaseContract.UserProfileEntry.TABLE_NAME,
-                        projection,
-                        selection,
-                        selectionArgs,
-                        null,
-                        null,
-                        sortOrder);
-                break;
-            case USER_PROFILE_WITH_ID:
-                id = uri.getPathSegments().get(1);
-                selectionArguments = new String[]{id};
-                cursor = db.query(DatabaseContract.UserProfileEntry.TABLE_NAME,
-                        projection,
-                        "_id=?",
-                        selectionArguments,
-                        null,
-                        null,
-                        sortOrder);
-                break;
-            case USER_FOLLOWERS:
-                cursor = db.query(DatabaseContract.UserFollowersEntry.TABLE_NAME,
-                        projection,
-                        selection,
-                        selectionArgs,
-                        null,
-                        null,
-                        sortOrder);
-                break;
-            case USER_FOLLOWER_WITH_ID:
-                id = uri.getPathSegments().get(1);
-                selectionArguments = new String[]{id};
-                cursor = db.query(DatabaseContract.UserFollowersEntry.TABLE_NAME,
-                        projection,
-                        "_id=?",
-                        selectionArguments,
-                        null,
-                        null,
-                        sortOrder);
-                break;
-            case USER_FOLLOWS:
-                cursor = db.query(DatabaseContract.UserFollowsEntry.TABLE_NAME,
-                        projection,
-                        selection,
-                        selectionArgs,
-                        null,
-                        null,
-                        sortOrder);
-                break;
-            case USER_FOLLOWS_WITH_ID:
-                id = uri.getPathSegments().get(1);
-                selectionArguments = new String[]{id};
-                cursor = db.query(DatabaseContract.UserFollowsEntry.TABLE_NAME,
-                        projection,
-                        "_id=?",
-                        selectionArguments,
-                        null,
-                        null,
-                        sortOrder);
-                break;
-            case NEWS_FEED:
-                cursor = db.query(DatabaseContract.NewsFeedEntry.TABLE_NAME,
-                        projection,
-                        selection,
-                        selectionArgs,
-                        null,
-                        null,
-                        sortOrder);
-                break;
-            case NEWS_FEED_WITH_ID:
-                id = uri.getPathSegments().get(1);
-                selectionArguments = new String[]{id};
-                cursor = db.query(DatabaseContract.NewsFeedEntry.TABLE_NAME,
-                        projection,
-                        "_id=?",
-                        selectionArguments,
-                        null,
-                        null,
-                        sortOrder);
-                break;
-            default:
-                throw new SQLException("Wrong Uri: " + uri);
-
-        }
-        cursor.setNotificationUri(getContext().getContentResolver(), uri);
-        return cursor;
-    }
-
-    @Nullable
-    @Override
-    public String getType(@NonNull Uri uri) {
-
-        int match = sUriMatcher.match(uri);
-        switch (match) {
-            case LOCS:
-                return "vnd.android.cursor.dir" + "/" + DatabaseContract.CONTENT_AUTHORITY + "/" + DatabaseContract.PATH_MAP;
-            case LOC_WITH_ID:
-                return "vnd.android.cursor.item" + "/" + DatabaseContract.CONTENT_AUTHORITY + "/" + DatabaseContract.PATH_MAP;
-            case USER_PROFILES:
-                return "vnd.android.cursor.dir" + "/" + DatabaseContract.CONTENT_AUTHORITY + "/" + DatabaseContract.PATH_USER_PROFILE;
-            case USER_PROFILE_WITH_ID:
-                return "vnd.android.cursor.item" + "/" + DatabaseContract.CONTENT_AUTHORITY + "/" + DatabaseContract.PATH_USER_PROFILE;
-            case USER_FOLLOWERS:
-                return "vnd.android.cursor.dir" + "/" + DatabaseContract.CONTENT_AUTHORITY + "/" + DatabaseContract.PATH_USER_FOLLOWERS;
-            case USER_FOLLOWER_WITH_ID:
-                return "vnd.android.cursor.item" + "/" + DatabaseContract.CONTENT_AUTHORITY + "/" + DatabaseContract.PATH_USER_FOLLOWERS;
-            case USER_FOLLOWS:
-                return "vnd.android.cursor.dir" + "/" + DatabaseContract.CONTENT_AUTHORITY + "/" + DatabaseContract.PATH_USER_FOLLOWS;
-            case USER_FOLLOWS_WITH_ID:
-                return "vnd.android.cursor.item" + "/" + DatabaseContract.CONTENT_AUTHORITY + "/" + DatabaseContract.PATH_USER_FOLLOWS;
-            case NEWS_FEED:
-                return "vnd.android.cursor.dir" + "/" + DatabaseContract.CONTENT_AUTHORITY + "/" + DatabaseContract.PATH_NEWS_FEED;
-            case NEWS_FEED_WITH_ID:
-                return "vnd.android.cursor.item" + "/" + DatabaseContract.CONTENT_AUTHORITY + "/" + DatabaseContract.PATH_NEWS_FEED;
-
-
-            default:
-                throw new UnsupportedOperationException("Unknown uri: " + uri);
-        }
-    }
-
-    @Nullable
-    @Override
-    public Uri insert(@NonNull Uri uri, @Nullable ContentValues values) {
-        final SQLiteDatabase db = databaseHelper.getWritableDatabase();
-        int match = sUriMatcher.match(uri);
-        Uri returnUri;
-        long id;
-        switch (match) {
-
-            case LOCS:
-                id = db.insert(DatabaseContract.MapEntry.TABLE_NAME, null, values);
-                if (id > 0) {
-                    returnUri = ContentUris.withAppendedId(DatabaseContract.MapEntry.CONTENT_URI, id);
-                } else
-                    throw new SQLException("Failed to insert row into " + uri);
-                break;
-            case USER_PROFILES:
-                id = db.insert(DatabaseContract.UserProfileEntry.TABLE_NAME, null, values);
-                if (id > 0) {
-                    returnUri = ContentUris.withAppendedId(DatabaseContract.UserProfileEntry.CONTENT_URI, id);
-                } else
-                    throw new SQLException("Failed to insert row into " + uri);
-                break;
-            case USER_FOLLOWERS:
-                id = db.insert(DatabaseContract.UserFollowersEntry.TABLE_NAME, null, values);
-                if (id > 0) {
-                    returnUri = ContentUris.withAppendedId(DatabaseContract.UserFollowersEntry.CONTENT_URI, id);
-                } else
-                    throw new SQLException("Failed to insert row into " + uri);
-                break;
-            case USER_FOLLOWS:
-                id = db.insert(DatabaseContract.UserFollowsEntry.TABLE_NAME, null, values);
-                if (id > 0) {
-                    returnUri = ContentUris.withAppendedId(DatabaseContract.UserFollowsEntry.CONTENT_URI, id);
-                } else
-                    throw new SQLException("Failed to insert row into " + uri);
-                break;
-            case NEWS_FEED:
-                id = db.insert(DatabaseContract.NewsFeedEntry.TABLE_NAME, null, values);
-                if (id > 0) {
-                    returnUri = ContentUris.withAppendedId(DatabaseContract.NewsFeedEntry.CONTENT_URI, id);
-                } else
-                    throw new SQLException("Failed to insert row into " + uri);
-                break;
-
-            default:
-                throw new SQLException("Wrong uri: " + uri);
-
-        }
-        getContext().getContentResolver().notifyChange(uri, null);
-        return returnUri;
-    }
-
-    @Override
-    public int bulkInsert(@NonNull Uri uri, @NonNull ContentValues[] values) {
-        final SQLiteDatabase db = databaseHelper.getWritableDatabase();
-        int rowsInserted;
-        switch (sUriMatcher.match(uri)) {
-
-            case LOCS:
-                db.beginTransaction();
-                rowsInserted = 0;
-                try {
-                    for (ContentValues value : values) {
-
-
-                        long _id = db.insert(DatabaseContract.MapEntry.TABLE_NAME, null, value);
-                        if (_id != -1) {
-                            rowsInserted++;
-                        }
-                    }
-                    db.setTransactionSuccessful();
-                } finally {
-                    db.endTransaction();
-                }
-
-                if (rowsInserted > 0) {
-                    getContext().getContentResolver().notifyChange(uri, null);
-                }
-                return rowsInserted;
-            case USER_PROFILES:
-                db.beginTransaction();
-                rowsInserted = 0;
-                try {
-                    for (ContentValues value : values) {
-
-
-                        long _id = db.insert(DatabaseContract.UserProfileEntry.TABLE_NAME, null, value);
-                        if (_id != -1) {
-                            rowsInserted++;
-                        }
-                    }
-                    db.setTransactionSuccessful();
-                } finally {
-                    db.endTransaction();
-                }
-
-                if (rowsInserted > 0) {
-                    getContext().getContentResolver().notifyChange(uri, null);
-                }
-                return rowsInserted;
-            case USER_FOLLOWERS:
-                db.beginTransaction();
-                rowsInserted = 0;
-                try {
-                    for (ContentValues value : values) {
-
-
-                        long _id = db.insert(DatabaseContract.UserFollowersEntry.TABLE_NAME, null, value);
-                        if (_id != -1) {
-                            rowsInserted++;
-                        }
-                    }
-                    db.setTransactionSuccessful();
-                } finally {
-                    db.endTransaction();
-                }
-
-                if (rowsInserted > 0) {
-                    getContext().getContentResolver().notifyChange(uri, null);
-                }
-                return rowsInserted;
-            case USER_FOLLOWS:
-                db.beginTransaction();
-                rowsInserted = 0;
-                try {
-                    for (ContentValues value : values) {
-
-
-                        long _id = db.insert(DatabaseContract.UserFollowsEntry.TABLE_NAME, null, value);
-                        if (_id != -1) {
-                            rowsInserted++;
-                        }
-                    }
-                    db.setTransactionSuccessful();
-                } finally {
-                    db.endTransaction();
-                }
-
-                if (rowsInserted > 0) {
-                    getContext().getContentResolver().notifyChange(uri, null);
-                }
-                return rowsInserted;
-            case NEWS_FEED:
-                db.beginTransaction();
-                rowsInserted = 0;
-                try {
-                    for (ContentValues value : values) {
-
-
-                        long _id = db.insert(DatabaseContract.NewsFeedEntry.TABLE_NAME, null, value);
-                        if (_id != -1) {
-                            rowsInserted++;
-                        }
-                    }
-                    db.setTransactionSuccessful();
-                } finally {
-                    db.endTransaction();
-                }
-
-                if (rowsInserted > 0) {
-                    getContext().getContentResolver().notifyChange(uri, null);
-                }
-                return rowsInserted;
-
-            default:
-                return super.bulkInsert(uri, values);
-        }
-
-    }
-
-    @Override
-    public int delete(@NonNull Uri uri, @Nullable String selection, @Nullable String[] selectionArgs) {
-        int numRowsDeleted;
-        String id;
-        if (null == selection) selection = "1";
-
-        switch (sUriMatcher.match(uri)) {
-
-            case LOCS:
-                numRowsDeleted = databaseHelper.getWritableDatabase().delete(
-                        DatabaseContract.MapEntry.TABLE_NAME,
-                        selection,
-                        selectionArgs);
-
-                break;
-            case USER_PROFILES:
-                numRowsDeleted = databaseHelper.getWritableDatabase().delete(
-                        DatabaseContract.UserProfileEntry.TABLE_NAME,
-                        selection,
-                        selectionArgs);
-
-                break;
-            case USER_FOLLOWERS:
-                numRowsDeleted = databaseHelper.getWritableDatabase().delete(
-                        DatabaseContract.UserFollowersEntry.TABLE_NAME,
-                        selection,
-                        selectionArgs);
-
-                break;
-            case USER_FOLLOWS:
-                numRowsDeleted = databaseHelper.getWritableDatabase().delete(
-                        DatabaseContract.UserFollowsEntry.TABLE_NAME,
-                        selection,
-                        selectionArgs);
-
-                break;
-            case NEWS_FEED:
-                numRowsDeleted = databaseHelper.getWritableDatabase().delete(
-                        DatabaseContract.NewsFeedEntry.TABLE_NAME,
-                        selection,
-                        selectionArgs);
-
-                break;
-
-            case LOC_WITH_ID:
-
-                id = uri.getPathSegments().get(1);
-
-                numRowsDeleted = databaseHelper.getWritableDatabase().delete(DatabaseContract.MapEntry.TABLE_NAME, "_id=?", new String[]{id});
-                break;
-            case USER_PROFILE_WITH_ID:
-
-                id = uri.getPathSegments().get(1);
-
-                numRowsDeleted = databaseHelper.getWritableDatabase().delete(DatabaseContract.UserProfileEntry.TABLE_NAME, "_id=?", new String[]{id});
-                break;
-            case USER_FOLLOWER_WITH_ID:
-
-                id = uri.getPathSegments().get(1);
-
-                numRowsDeleted = databaseHelper.getWritableDatabase().delete(DatabaseContract.UserFollowersEntry.TABLE_NAME, "_id=?", new String[]{id});
-                break;
-            case USER_FOLLOWS_WITH_ID:
-
-                id = uri.getPathSegments().get(1);
-
-                numRowsDeleted = databaseHelper.getWritableDatabase().delete(DatabaseContract.UserFollowsEntry.TABLE_NAME, "_id=?", new String[]{id});
-                break;
-            case NEWS_FEED_WITH_ID:
-
-                id = uri.getPathSegments().get(1);
-
-                numRowsDeleted = databaseHelper.getWritableDatabase().delete(DatabaseContract.NewsFeedEntry.TABLE_NAME, "_id=?", new String[]{id});
-                break;
-            default:
-                throw new UnsupportedOperationException("Unknown uri: " + uri);
-        }
-
-
-        if (numRowsDeleted != 0) {
-            getContext().getContentResolver().notifyChange(uri, null);
-        }
-
-        return numRowsDeleted;
-    }
-
-
-    @Override
-    public int update(@NonNull Uri uri, @Nullable ContentValues values, @Nullable String selection, @Nullable String[] selectionArgs) {
-
-        int itemsUpdated;
-
-
-        int match = sUriMatcher.match(uri);
-        String id;
-        switch (match) {
-            case LOC_WITH_ID:
-
-                id = uri.getPathSegments().get(1);
-
-                itemsUpdated = databaseHelper.getWritableDatabase().update(DatabaseContract.MapEntry.TABLE_NAME, values, "_id=?", new String[]{id});
-                break;
-            case USER_PROFILE_WITH_ID:
-
-                id = uri.getPathSegments().get(1);
-
-                itemsUpdated = databaseHelper.getWritableDatabase().update(DatabaseContract.UserProfileEntry.TABLE_NAME, values, "_id=?", new String[]{id});
-                break;
-            case USER_FOLLOWER_WITH_ID:
-
-                id = uri.getPathSegments().get(1);
-
-                itemsUpdated = databaseHelper.getWritableDatabase().update(DatabaseContract.UserFollowersEntry.TABLE_NAME, values, "_id=?", new String[]{id});
-                break;
-            case USER_FOLLOWS_WITH_ID:
-
-                id = uri.getPathSegments().get(1);
-
-                itemsUpdated = databaseHelper.getWritableDatabase().update(DatabaseContract.UserFollowsEntry.TABLE_NAME, values, "_id=?", new String[]{id});
-                break;
-            case NEWS_FEED_WITH_ID:
-
-                id = uri.getPathSegments().get(1);
-
-                itemsUpdated = databaseHelper.getWritableDatabase().update(DatabaseContract.NewsFeedEntry.TABLE_NAME, values, "_id=?", new String[]{id});
-                break;
-            default:
-                throw new UnsupportedOperationException("Unknown uri: " + uri);
-        }
-
-        if (itemsUpdated != 0) {
-
-            getContext().getContentResolver().notifyChange(uri, null);
-        }
-
-
-        return itemsUpdated;
-    }
-}
-

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/data/User.java

@@ -2,13 +2,17 @@ package in.ac.iitb.gymkhana.iitbapp.data;
 
 import android.arch.persistence.room.ColumnInfo;
 import android.arch.persistence.room.Entity;
+import android.arch.persistence.room.PrimaryKey;
 
 import com.google.gson.annotations.SerializedName;
 
 import java.util.List;
 
-@Entity
+@Entity(tableName = "users")
 class User {
+    @PrimaryKey(autoGenerate = true)
+    int db_id;
+
     @ColumnInfo(name = "id")
     @SerializedName("id")
     String userID;

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/data/Venue.java

 package in.ac.iitb.gymkhana.iitbapp.data;
 
 import android.arch.persistence.room.ColumnInfo;
+import android.arch.persistence.room.Entity;
+import android.arch.persistence.room.PrimaryKey;
 
 import com.google.gson.annotations.SerializedName;
 
+@Entity(tableName = "venues")
 public class Venue {
+    @PrimaryKey(autoGenerate = true)
+    int db_id;
     @ColumnInfo(name = "id")
     @SerializedName("id")
     String venueID;

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/fragment/FeedFragment.java

@@ -3,6 +3,7 @@ package in.ac.iitb.gymkhana.iitbapp.fragment;
 
 import android.content.ContentValues;
 import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
@@ -27,7 +28,7 @@ import in.ac.iitb.gymkhana.iitbapp.adapter.FeedAdapter;
 import in.ac.iitb.gymkhana.iitbapp.api.RetrofitInterface;
 import in.ac.iitb.gymkhana.iitbapp.api.ServiceGenerator;
 import in.ac.iitb.gymkhana.iitbapp.api.model.NewsFeedResponse;
-import in.ac.iitb.gymkhana.iitbapp.data.DatabaseContract;
+import in.ac.iitb.gymkhana.iitbapp.data.AppDatabase;
 import in.ac.iitb.gymkhana.iitbapp.data.Event;
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -40,6 +41,7 @@ public class FeedFragment extends Fragment {
 
     private RecyclerView feedRecyclerView;
     private SwipeRefreshLayout feedSwipeRefreshLayout;
+    private AppDatabase appDatabase;
 
     public FeedFragment() {
         // Required empty public constructor
@@ -50,42 +52,34 @@ public class FeedFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
         // Inflate the layout for this fragment
+
         return inflater.inflate(R.layout.fragment_feed, container, false);
     }
 
     @Override
     public void onStart() {
         super.onStart();
-//        Cursor cursor = getContext().getContentResolver().query(DatabaseContract.NewsFeedEntry.CONTENT_URI, null, null, null, null);
-//        if (cursor.getCount() != 0) {
-//            final List<Event> events = new ArrayList<>();
-//            while (cursor.moveToNext()) {
-//                Event event = new Event(cursor.getString(cursor.getColumnIndex(DatabaseContract.NewsFeedEntry.COLUMN_EVENT_NAME)),
-//                        cursor.getString(cursor.getColumnIndex(DatabaseContract.NewsFeedEntry.COLUMN_EVENT_DESCRIPTION)),
-//                        cursor.getString(cursor.getColumnIndex(DatabaseContract.NewsFeedEntry.COLUMN_EVENT_IMAGE)),
-//                        cursor.getString(cursor.getColumnIndex(DatabaseContract.NewsFeedEntry.COLUMN_EVENT_CREATOR_NAME)),
-//                        cursor.getString(cursor.getColumnIndex(DatabaseContract.NewsFeedEntry.COLUMN_EVENT_CREATOR_ID)),
-//                        cursor.getInt(cursor.getColumnIndex(DatabaseContract.NewsFeedEntry.COLUMN_EVENT_GOING_STATUS)));
-//                events.add(event);
-//            }
-//            FeedAdapter feedAdapter = new FeedAdapter(events, new ItemClickListener() {
-//                @Override
-//                public void onItemClick(View v, int position) {
-//                    String eventJson = new Gson().toJson(events.get(position));
-//                    Bundle bundle = new Bundle();
-//                    bundle.putString(Constants.EVENT_JSON, eventJson);
-//                    EventFragment eventFragment = new EventFragment();
-//                    eventFragment.setArguments(bundle);
-//                    FragmentManager manager = getActivity().getSupportFragmentManager();
-//                    FragmentTransaction transaction = manager.beginTransaction();
-//                    transaction.replace(R.id.framelayout_for_fragment, eventFragment, eventFragment.getTag());
-//                    transaction.commit();
-//                }
-//            });
-//            feedRecyclerView = (RecyclerView) getActivity().findViewById(R.id.feed_recycler_view);
-//            feedRecyclerView.setAdapter(feedAdapter);
-//            feedRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
-//
+
+        appDatabase= AppDatabase.getAppDatabase(getContext());
+        final List<Event> events=appDatabase.dbDao().getAllEvents();
+            FeedAdapter feedAdapter = new FeedAdapter(events, new ItemClickListener() {
+                @Override
+                public void onItemClick(View v, int position) {
+                    String eventJson = new Gson().toJson(events.get(position));
+                    Bundle bundle = new Bundle();
+                    bundle.putString(Constants.EVENT_JSON, eventJson);
+                    EventFragment eventFragment = new EventFragment();
+                    eventFragment.setArguments(bundle);
+                    FragmentManager manager = getActivity().getSupportFragmentManager();
+                    FragmentTransaction transaction = manager.beginTransaction();
+                    transaction.replace(R.id.framelayout_for_fragment, eventFragment, eventFragment.getTag());
+                    transaction.commit();
+                }
+            });
+            feedRecyclerView = (RecyclerView) getActivity().findViewById(R.id.feed_recycler_view);
+            feedRecyclerView.setAdapter(feedAdapter);
+            feedRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
+
 //        }
 
         updateFeed();
@@ -127,22 +121,12 @@ public class FeedFragment extends Fragment {
                     feedRecyclerView = (RecyclerView) getActivity().findViewById(R.id.feed_recycler_view);
                     feedRecyclerView.setAdapter(feedAdapter);
                     feedRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
-                    long itemsRemoved = getContext().getContentResolver().delete(DatabaseContract.NewsFeedEntry.CONTENT_URI, null, null);
-
-                    Log.d("FeedFragment", itemsRemoved + " items removed.");
-                    ContentValues contentValues[] = new ContentValues[events.size()];
-                    for (int i = 0; i < events.size(); i++) {
-                        ContentValues contentValues1 = new ContentValues();
-                        contentValues1.put(DatabaseContract.NewsFeedEntry.COLUMN_EVENT_NAME, events.get(i).getEventName());
-                        contentValues1.put(DatabaseContract.NewsFeedEntry.COLUMN_EVENT_DESCRIPTION, events.get(i).getEventDescription());
-                        contentValues1.put(DatabaseContract.NewsFeedEntry.COLUMN_EVENT_IMAGE, events.get(i).getEventImageURL());
-                        contentValues[i] = contentValues1;
-                    }
-                    int insertCount = getContext().getContentResolver().bulkInsert(DatabaseContract.NewsFeedEntry.CONTENT_URI, contentValues);
-                    Log.d("FeedFragment", Integer.toString(insertCount) + " elements inserted");
+
+                    appDatabase.dbDao().deleteEvents();
+                    appDatabase.dbDao().insertEvents(events);
+                    //Server Error
+                    feedSwipeRefreshLayout.setRefreshing(false);
                 }
-                //Server Error
-                feedSwipeRefreshLayout.setRefreshing(false);
             }
 
             @Override