Mercurial > hg > release > thermostat-0.13
view storage/core/src/main/java/com/redhat/thermostat/storage/core/QueuedBackingStorage.java @ 1218:e2034aa58edf
Implement aggregate prepared query (count).
Reviewed-by: omajid
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-August/007834.html
PR1509
author | Severin Gehwolf <sgehwolf@redhat.com> |
---|---|
date | Fri, 09 Aug 2013 10:43:36 +0200 |
parents | e810fb4143b5 |
children |
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/* * Copyright 2012, 2013 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * Thermostat is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.storage.core; import java.util.concurrent.ExecutorService; import com.redhat.thermostat.storage.core.AggregateQuery.AggregateFunction; import com.redhat.thermostat.storage.model.Pojo; public class QueuedBackingStorage extends QueuedStorage implements BackingStorage { public QueuedBackingStorage(BackingStorage delegate) { super(delegate); } QueuedBackingStorage(BackingStorage delegate, ExecutorService executor, ExecutorService fileExecutor) { super(delegate, executor, fileExecutor); } @Override public <T extends Pojo> Query<T> createQuery(Category<T> category) { return ((BackingStorage) delegate).createQuery(category); } @Override public <T extends Pojo> PreparedStatement<T> prepareStatement( StatementDescriptor<T> desc) throws DescriptorParsingException { // FIXME: Use some kind of cache in order to avoid parsing of // descriptors each time this is called. At least if the descriptor // class is the same we should be able to do something here. // Don't just defer to the delegate, since we want statements // prepared by this method to create queries using the // createQuery method in this class. return PreparedStatementFactory.getInstance(this, desc); } @Override public <T extends Pojo> Query<T> createAggregateQuery( AggregateFunction function, Category<T> category) { return ((BackingStorage) delegate).createAggregateQuery(function, category); } }