/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.quicksearchbox.util; import android.database.sqlite.SQLiteDatabase; /** * Abstract helper base class for asynchronous SQLite queries. * * @param The type of the result of the query. */ public abstract class SQLiteAsyncQuery { /** * Performs a query and computes some value from the result * * @param db A readable database. * @return The result of the query. */ protected abstract A performQuery(SQLiteDatabase db); /** * Runs the query against the database and passes the result to the consumer. */ public void run(SQLiteDatabase db, Consumer consumer) { A result = performQuery(db); consumer.consume(result); } }