Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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 org.cyclop.service.importer.intern; import java.util.Scanner; import javax.inject.Inject; import javax.inject.Named; import org.apache.commons.lang.StringUtils; import org.cyclop.model.CqlQuery; import org.cyclop.model.CqlQueryType; import org.cyclop.model.exception.QueryException; import org.cyclop.service.cassandra.QueryService; import org.cyclop.service.importer.QueryImporter; import org.cyclop.service.importer.ResultWriter; import org.cyclop.service.importer.model.ImportConfig; import org.cyclop.validation.EnableValidation; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** @author Maciej Miklas */ @Named(QueryImporter.IMPL_SERIAL) @EnableValidation public class SerialQueryImporter extends AbstractImporter { private final static Logger LOG = LoggerFactory.getLogger(SerialQueryImporter.class); @Inject protected QueryService queryService; @Override void execImport(Scanner scanner, ResultWriter resultWriter, StatsCollector status, ImportConfig config) { while (scanner.hasNext()) { String nextStr = StringUtils.trimToNull(scanner.next()); if (nextStr == null) { continue; } CqlQuery query = new CqlQuery(CqlQueryType.UNKNOWN, nextStr); long startTime = System.currentTimeMillis(); try { LOG.debug("Executing: {}", query); queryService.executeSimple(query, config.isUpdateHistory()); resultWriter.success(query, System.currentTimeMillis() - startTime); status.success.getAndIncrement(); } catch (QueryException e) { status.error.getAndIncrement(); LOG.debug(e.getMessage()); LOG.trace(e.getMessage(), e); resultWriter.error(query, e, System.currentTimeMillis() - startTime); if (!config.isContinueWithErrors()) { LOG.debug("Breaking import due to an error"); break; } } } } }