Add the Location Database Helper

Not yet tested, but most functionality is done.

UNCCScavenger/src/edu/uncc/scavenger/database/LocationDatabaseHelper.java

@@ -0,0 +1,108 @@
+package edu.uncc.scavenger.database;
+
+// Design pattern from: http://www.androiddesignpatterns.com/2012/05/correctly-managing-your-sqlite-database.html
+
+import java.util.ArrayList;
+
+import edu.uncc.scavenger.rest.RestLocation;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteDatabase.CursorFactory;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.database.sqlite.SQLiteStatement;
+
+public class LocationDatabaseHelper extends SQLiteOpenHelper {
+	
+	private static LocationDatabaseHelper helper;
+	
+	private static final String DATABASE_NAME = "locations.db";
+	private static final String TABLE_NAME = "LOCATIONS";
+	private static final int DATABASE_VERSION = 1;
+	
+	private static final String KEY_ID = "ID";
+	private static final String KEY_NAME = "NAME";
+	private static final String KEY_RIDDLE = "RIDDLE";
+	private static final String KEY_LOCATION_LONG = "LOCATION_LONG";
+	private static final String KEY_LOCATION_LAT = "LOCATION_LAT";
+	private static final String KEY_KEY = "KEY";
+	
+	private LocationDatabaseHelper(Context ctx) {
+		super(ctx, DATABASE_NAME, null, DATABASE_VERSION);
+	}
+	
+	public LocationDatabaseHelper getInstance(Context ctx) {
+		if (helper == null) {
+			helper = new LocationDatabaseHelper(ctx.getApplicationContext());
+		}
+		return helper;
+	}
+
+	private static final String CREATE_QUERY = 
+			"CREATE TABLE " + TABLE_NAME + "(" +
+				KEY_ID + " int PRIMARY KEY," +
+				KEY_NAME + " VARCHAR(255)," +
+				KEY_RIDDLE + " VARCHAR(1024)," +
+				KEY_LOCATION_LONG + " REAL," +
+				KEY_LOCATION_LAT + " REAL" +
+				KEY_KEY + " VARCHAR(255)" +
+				");";
+	@Override
+	public void onCreate(SQLiteDatabase db) {
+		db.execSQL(CREATE_QUERY);
+	}
+
+	@Override
+	public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+		return;
+	}
+	
+	public RestLocation locationFromCursor(Cursor c) {
+		RestLocation location = null;
+		if (c != null) {
+			location = new RestLocation();
+			location.setId(c.getInt(0));
+			location.setName(c.getString(1));
+			location.setRiddle(c.getString(2));
+			location.setLocationLong(c.getDouble(3));
+			location.setLocationLat(c.getDouble(4));
+			location.setKey(c.getString(5));
+		}
+		
+		return location;
+	}
+	
+	public ArrayList<RestLocation> fetchAll() {
+		ArrayList<RestLocation> results = new ArrayList<RestLocation>();
+		SQLiteDatabase db = helper.getReadableDatabase();
+		Cursor c = db.query(TABLE_NAME, new String[]{KEY_ID, KEY_NAME, KEY_RIDDLE, KEY_LOCATION_LONG,
+											KEY_LOCATION_LAT, KEY_KEY},
+				null, null, null, null, null);
+		
+		if (c != null && c.getCount() > 0) {
+			c.moveToFirst();
+			do {
+				RestLocation loc = locationFromCursor(c);
+				if (loc != null) {
+					results.add(loc);
+				}
+			} while (c.moveToNext());
+		}
+		
+		return results;
+	}
+	
+	public void persist(RestLocation loc) {
+		ContentValues values = new ContentValues();
+		values.put(KEY_ID, loc.getId());
+		values.put(KEY_NAME, loc.getName());
+		values.put(KEY_RIDDLE, loc.getRiddle());
+		values.put(KEY_LOCATION_LONG, loc.getLocationLong());
+		values.put(KEY_LOCATION_LAT, loc.getLocationLat());
+		values.put(KEY_KEY, loc.getKey());
+		helper.getWritableDatabase().insert(TABLE_NAME, null, values);
+	}
+	
+	
+}

UNCCScavenger/src/edu/uncc/scavenger/rest/RestLocation.java

@@ -9,6 +9,7 @@ public class RestLocation {
 	private String riddle;
 	private double locationLong;
 	private double locationLat;
+	private String key;
 	
 	public int getId() {
 		return id;
@@ -40,14 +41,20 @@ public class RestLocation {
 	public void setLocationLat(double locationLat) {
 		this.locationLat = locationLat;
 	}
-	
+	public String getKey() {
+		return key;
+	}
+	public void setKey(String key) {
+		this.key = key;
+	}
+
 	public Location getLocation() {
 		android.location.Location mLocation = new android.location.Location("NinerFinderServer");
 		mLocation.setLatitude(getLocationLat());
 		mLocation.setLongitude(getLocationLong());
 		return mLocation;
 	}
-	
+
 	public float bearingTo(RestLocation target) {
 		return getLocation().bearingTo(target.getLocation());
 	}