Java tutorial
/** * Copyright (C) [2013] [The FURTHeR 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 edu.utah.further.fqe.impl.service.route; import java.util.List; import org.apache.camel.Body; import org.apache.camel.Handler; import org.apache.camel.InOnly; import org.apache.commons.lang.Validate; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import edu.utah.further.core.api.context.Named; import edu.utah.further.core.query.domain.SearchCriterion; import edu.utah.further.core.util.io.IoUtil; import edu.utah.further.fqe.api.service.query.QueryContextService; import edu.utah.further.fqe.ds.api.domain.DsMetaData; import edu.utah.further.fqe.ds.api.domain.QueryContext; import edu.utah.further.fqe.ds.api.to.QueryContextToImpl; import edu.utah.further.fqe.impl.domain.QueryContextEntity; /** * A simple mock data source for response-reply unit tests. * <p> * -----------------------------------------------------------------------------------<br> * (c) 2008-2013 FURTHeR Project, Health Sciences IT, University of Utah<br> * Contact: {@code <further@utah.edu>}<br> * Biomedical Informatics, 26 South 2000 East<br> * Room 5775 HSEB, Salt Lake City, UT 84112<br> * Day Phone: 1-801-581-4080<br> * ----------------------------------------------------------------------------------- * * @author Oren E. Livne {@code <oren.livne@utah.edu>} * @version Feb 22, 2010 */ public final class DataSourceMock implements Named { // ========================= CONSTANTS ================================= /** * A logger that helps identify this class' printouts. */ private static final Logger log = LoggerFactory.getLogger(DataSourceMock.class); // ========================= FIELDS ==================================== /** * Name of this data source. */ private final String name; /** * Context service */ @Autowired private QueryContextService contextService; // ========================= CONSTRUCTORS ============================== /** * @param name */ public DataSourceMock(final String name) { super(); this.name = name; } // ========================= IMPLEMENTATION: Named ===================== /** * @return * @see edu.utah.further.core.api.context.Named#getName() */ @Override public String getName() { return name; } // ========================= METHODS =================================== /** * Process a string body. * * @param inputString * input message body * @return processed input string. Contains this data source's details for easy test * assertions */ @Handler @InOnly public String process(final String inputString) { if (log.isTraceEnabled()) { log.trace(getDataSourcePrefix() + "process() " + inputString); } return name + ": " + inputString; } /** * @param inputString * @return processed input string */ @Handler public QueryContext processQueryContext(final @Body QueryContext parentContext) { Validate.notNull(parentContext); if (log.isDebugEnabled()) { log.debug(getDataSourcePrefix() + "processQueryContext() " + parentContext); log.debug("QC Data Source ID: " + parentContext.getDataSourceId()); log.debug("Search criteria: " + parentContext.getQuery()); } // This section mocks a data source's creation of a new child context, queuing it // and setting its parent. QueryContextEntity childContext = QueryContextEntity.newInstanceWithExecutionId(); childContext.setDataSourceId(name); childContext.setParent(QueryContextEntity.newCopy(parentContext)); // Assuming the search query's first criterion is of type [EQ, // desiredNumRecordsBackFromThisDataSource, value]. Set value (parameter #2 // (0-based index) on the parameter list)as our output records. // // If there are two criteria, using the second criterion's value instead. final Long numRecords = getNumRecordsFromQuery(parentContext); childContext.setNumRecords(numRecords.longValue()); childContext = (QueryContextEntity) contextService.queue(childContext); childContext.start(); childContext.finish(); final long sleepValue = getSleepValue(); if (log.isDebugEnabled()) { log.debug("Sleeping for " + sleepValue + " miliseconds"); } IoUtil.sleep(sleepValue); return QueryContextToImpl.newCopy(childContext); } @SuppressWarnings("boxing") private Long getNumRecordsFromQuery(final QueryContext parentContext) { try { final List<SearchCriterion> criteria = parentContext.getQuery().getRootCriterion().getCriteria(); final Long numRecords = (criteria.size() == 2) ? (Long) criteria.get(1).getParameter(2) : (Long) criteria.get(0).getParameter(2); return numRecords; } catch (final Exception e) { // Signifies that SearchQueryDeEvaluator might have not operated // correctly return -1l; } } /** * @return */ private long getSleepValue() { // Make DS4 slower than the DS3 but have both within the range of 1000l that // testPlan() waits for to collect results return "DS3".equals(name) ? 0l : 200l; } /** * Return a {@link DsMetaData} response. * * @param inputString * input message body * @return meta data XML entity instance */ @Handler @InOnly public DsMetaData getDsMetaData(final String inputString) { if (log.isDebugEnabled()) { log.debug(getDataSourcePrefix() + "getDsMetaData()"); // " inputString " // + inputString); } // For test assertion simplicity, the name field below does not depend on // the input string. Only the description field does. return new DsMetaData(name, name + ": " + inputString); } // ========================= PRIVATE METHODS =========================== /** * @return */ private String getDataSourcePrefix() { return "Data source " + name + ": "; } }