Added Database classes

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);
-    }
-}