RunSource

package com.run.store;

import java.util.ArrayList;
import java.util.List;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.util.Log;

public class RunSource {
    private SQLiteDatabase database;
    private final RunHelper helper;

    static private RunSource instance;

    private RunSource(final Context context) {
        helper = new RunHelper(context);
    }

    public static RunSource getInstance(final Context context) {
        if (instance == null) {
            instance = new RunSource(context);
        }
        return instance;
    }

    public void open() throws SQLException {
        database = helper.getWritableDatabase();
    }

    public void close() {
        helper.close();
    }

    public Storable getStorableByPrimaryKey(final Storable storable) {
        final String restrict = RunHelper.PRIMARY_KEY + "="
                + storable.getPrimaryKeyValue();
        final Cursor cursor = database.query(true, storable.getTableName(),
                storable.getColNames(), restrict, null, null, null, null, null);
        Storable run = null;
        if ((cursor != null) && (cursor.getCount() > 0)) {
            cursor.moveToFirst();
            run = storable.get(cursor);
        }
        cursor.close();
        return run;
    }

    public List<Storable> getStorableList(final Storable storable) {
        final List<Storable> list = new ArrayList<Storable>();
        final Cursor cursor = database.query(storable.getTableName(),
                storable.getColNames(), null, null, null, null, null);
        cursor.moveToFirst();
        while (!cursor.isAfterLast()) {
            final Storable run = storable.get(cursor);
            list.add(run);
            cursor.moveToNext();
        }
        cursor.close();
        return list;
    }

    public boolean updateStorable(final Storable item) {
        final ContentValues args = item.getContentValues();
        final String restrict = RunHelper.PRIMARY_KEY + "="
                + item.getPrimaryKeyValue();
        return database.update(item.getTableName(), args, restrict, null) > 0;
    }

    public void deleteStorable(final Storable storable) {
        final long primaryKeyValue = storable.getPrimaryKeyValue();
        Log.d("RunSource", "Storable deleted with id: " + primaryKeyValue);
        database.delete(storable.getTableName(), RunHelper.PRIMARY_KEY + " = "
                + primaryKeyValue, null);
    }

    public Storable addStorable(final Storable storing) {
        final ContentValues values = storing.getContentValues();

        final long insertId = database.insert(storing.getTableName(), null,
                values);
        final Cursor cursor = database.query(storing.getTableName(),
                storing.getColNames(),
                RunHelper.PRIMARY_KEY + " = " + insertId, null, null, null,
                null);
        cursor.moveToFirst();
        final Storable run = storing.get(cursor);
        cursor.close();
        return run;
    }

}