110 lines
3.3 KiB
Java
110 lines
3.3 KiB
Java
package org.gcube.data.spd.obisplugin.search.query;
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import java.io.StringReader;
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import java.text.DateFormat;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.HashMap;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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import javax.ws.rs.core.MediaType;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.fasterxml.jackson.core.type.TypeReference;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.sun.jersey.api.client.Client;
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import com.sun.jersey.api.client.WebResource;
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import com.sun.jersey.api.client.config.DefaultClientConfig;
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public class MappingUtils {
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private static final int TIMEOUT = 40000;
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private static final int retries = 5;
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private static final int SLEEP_TIME = 10000;
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private static Logger log = LoggerFactory.getLogger(MappingUtils.class);
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@SuppressWarnings("unchecked")
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public static Map<String, Object> getObjectMapping(String query) throws Exception{
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String response = executeQuery(query);
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ObjectMapper mapper = new ObjectMapper(); // can reuse, share globally
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return mapper.readValue(new StringReader(response), Map.class);
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}
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public static List<Map<String, Object>> getObjectList(String query) throws Exception{
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String response = executeQuery(query);
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ObjectMapper mapper = new ObjectMapper(); // can reuse, share globally
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return mapper.readValue(new StringReader(response), new TypeReference<LinkedList<HashMap<String, Object>>>() {
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});
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}
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public static String getAsString(Map<String, Object> map, String key){
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if (!map.containsKey(key)) return null;
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return (String) map.get(key);
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}
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public static Double getAsDouble(Map<String, Object> map, String key){
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if (!map.containsKey(key)) return 0d;
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return (Double) map.get(key);
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}
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public static Integer getAsInteger(Map<String, Object> map, String key){
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if (!map.containsKey(key)) return 0;
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return (Integer) map.get(key);
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}
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public static Calendar getAsCalendar(Map<String, Object> map, String key){
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if (!map.containsKey(key)) return null;
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return parseCalendar((String) map.get(key));
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}
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public static Calendar parseCalendar(String date){
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try{
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DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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Calendar calendar= Calendar.getInstance();
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calendar.setTime(df.parse(date));
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return calendar;
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}catch (ParseException e) {
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log.warn("date discarded ("+date+")");
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return null;
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}
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}
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private static String executeQuery(String query){
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DefaultClientConfig clientConfig = new DefaultClientConfig();
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Client client = Client.create(clientConfig);
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client.setConnectTimeout(TIMEOUT);
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client.setReadTimeout(TIMEOUT);
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WebResource target = client.resource(query);
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//NameUsageWsClient nuws = new NameUsageWsClient(target);
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int tries = 1;
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String response = null;
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do {
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log.debug("try number {} STARTED for query {} ", tries,query);
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try{
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response = target.type(MediaType.APPLICATION_JSON).acceptLanguage(Locale.ENGLISH).get(String.class);
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}catch (Exception e) {
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log.debug("try number {} FAILED for query {} ", tries,query,e);
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try {
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if (tries<retries)Thread.sleep(SLEEP_TIME);
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} catch (InterruptedException e1) {}
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}
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tries++;
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}while (response==null && tries<=retries);
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return response;
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}
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}
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