70 lines
2.0 KiB
Java
70 lines
2.0 KiB
Java
package com.dougkeen.bart.data;
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import java.util.ArrayList;
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import java.util.List;
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import android.content.Context;
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import android.database.Cursor;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteOpenHelper;
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import com.dougkeen.bart.BartRunnerApplication;
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import com.dougkeen.bart.model.StationPair;
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public class DatabaseHelper extends SQLiteOpenHelper {
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private static final String DATABASE_NAME = "bart.dougkeen.db";
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private static final int DATABASE_VERSION = 6;
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public static final String FAVORITES_TABLE_NAME = "Favorites";
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private BartRunnerApplication app;
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public DatabaseHelper(Context context) {
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super(context, DATABASE_NAME, null, DATABASE_VERSION);
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app = (BartRunnerApplication) context.getApplicationContext();
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}
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@Override
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public void onCreate(SQLiteDatabase db) {
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}
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private void createFavoritesTable(SQLiteDatabase db) {
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db.execSQL("CREATE TABLE IF NOT EXISTS " + FAVORITES_TABLE_NAME + " ("
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+ RoutesColumns._ID.getColumnDef() + " PRIMARY KEY, "
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+ RoutesColumns.FROM_STATION.getColumnDef() + ", "
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+ RoutesColumns.TO_STATION.getColumnDef() + ", "
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+ RoutesColumns.FARE.getColumnDef() + ", "
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+ RoutesColumns.FARE_LAST_UPDATED.getColumnDef() + ", "
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+ RoutesColumns.AVERAGE_TRIP_SAMPLE_COUNT.getColumnDef() + ", "
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+ RoutesColumns.AVERAGE_TRIP_LENGTH.getColumnDef() + ");");
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}
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@Override
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
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db.beginTransaction();
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try {
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createFavoritesTable(db);
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Cursor query = db.query(FAVORITES_TABLE_NAME, RoutesColumns.all(),
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null, null, null, null, null);
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List<StationPair> favorites = new ArrayList<StationPair>();
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while (query.moveToNext()) {
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favorites.add(StationPair.createFromCursor(query));
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}
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query.close();
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new FavoritesPersistence(app).persist(favorites);
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db.execSQL("DROP TABLE " + FAVORITES_TABLE_NAME);
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db.setTransactionSuccessful();
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} finally {
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db.endTransaction();
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}
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}
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}
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