Mercurial > lada > lada-server
comparison src/main/java/de/intevation/lada/rest/exporter/JsonExportService.java @ 1043:1b9516c60a5a schema-update
Added json export.
| author | Raimund Renkert <raimund.renkert@intevation.de> |
|---|---|
| date | Mon, 05 Sep 2016 10:19:23 +0200 |
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| 1042:3a5a9a0492d1 | 1043:1b9516c60a5a |
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| 1 /* Copyright (C) 2013 by Bundesamt fuer Strahlenschutz | |
| 2 * Software engineering by Intevation GmbH | |
| 3 * | |
| 4 * This file is Free Software under the GNU GPL (v>=3) | |
| 5 * and comes with ABSOLUTELY NO WARRANTY! Check out | |
| 6 * the documentation coming with IMIS-Labordaten-Application for details. | |
| 7 */ | |
| 8 package de.intevation.lada.rest.exporter; | |
| 9 | |
| 10 import java.io.IOException; | |
| 11 import java.io.InputStream; | |
| 12 import java.util.ArrayList; | |
| 13 import java.util.List; | |
| 14 | |
| 15 import javax.enterprise.context.RequestScoped; | |
| 16 import javax.inject.Inject; | |
| 17 import javax.json.JsonArray; | |
| 18 import javax.json.JsonObject; | |
| 19 import javax.servlet.http.HttpServletRequest; | |
| 20 import javax.ws.rs.Consumes; | |
| 21 import javax.ws.rs.POST; | |
| 22 import javax.ws.rs.Path; | |
| 23 import javax.ws.rs.Produces; | |
| 24 import javax.ws.rs.core.Context; | |
| 25 | |
| 26 import org.apache.commons.io.IOUtils; | |
| 27 | |
| 28 import de.intevation.lada.exporter.ExportConfig; | |
| 29 import de.intevation.lada.exporter.ExportFormat; | |
| 30 import de.intevation.lada.exporter.Exporter; | |
| 31 import de.intevation.lada.util.annotation.AuthorizationConfig; | |
| 32 import de.intevation.lada.util.auth.Authorization; | |
| 33 import de.intevation.lada.util.auth.AuthorizationType; | |
| 34 import de.intevation.lada.util.auth.UserInfo; | |
| 35 import de.intevation.lada.util.rest.Response; | |
| 36 | |
| 37 /** | |
| 38 * REST service to export probe objects and the child objects associated with | |
| 39 * the selected Probe objects. | |
| 40 * <p> | |
| 41 * To request objects post a JSON formatted string with an array of probe ids. | |
| 42 * <pre> | |
| 43 * <code> | |
| 44 * { | |
| 45 * "proben": [[number], [number], ...] | |
| 46 * } | |
| 47 * </code> | |
| 48 * </pre> | |
| 49 * | |
| 50 * @author <a href="mailto:rrenkert@intevation.de">Raimund Renkert</a> | |
| 51 */ | |
| 52 @Path("data/export") | |
| 53 @RequestScoped | |
| 54 public class JsonExportService { | |
| 55 | |
| 56 /** | |
| 57 * The exporter. | |
| 58 */ | |
| 59 @Inject | |
| 60 @ExportConfig(format=ExportFormat.JSON) | |
| 61 private Exporter exporter; | |
| 62 | |
| 63 /** | |
| 64 * The authorization module. | |
| 65 */ | |
| 66 @Inject | |
| 67 @AuthorizationConfig(type=AuthorizationType.HEADER) | |
| 68 private Authorization authorization; | |
| 69 | |
| 70 | |
| 71 /** | |
| 72 * Export Probe objects. | |
| 73 * | |
| 74 * The service takes JSON formatted POST data containing probe ids and | |
| 75 * exports the Probe objects filtered by these ids. | |
| 76 * | |
| 77 * @param proben JSON formatted string with an array of probe ids. | |
| 78 * @param header The HTTP header containing authorization information. | |
| 79 * @return The LAF file to export. | |
| 80 */ | |
| 81 @POST | |
| 82 @Path("/json") | |
| 83 @Consumes("application/json") | |
| 84 @Produces("application/json") | |
| 85 public String download( | |
| 86 JsonObject proben, | |
| 87 @Context HttpServletRequest request | |
| 88 ) { | |
| 89 JsonArray array = proben.getJsonArray("proben"); | |
| 90 List<Integer> probeIds = new ArrayList<Integer>(); | |
| 91 UserInfo userInfo = authorization.getInfo(request); | |
| 92 for (int i = 0; i < array.size(); i++) { | |
| 93 Integer probeId = array.getInt(i); | |
| 94 probeIds.add(probeId); | |
| 95 } | |
| 96 InputStream exported = exporter.export(probeIds, userInfo); | |
| 97 if (exported == null) { | |
| 98 return new Response(false, 600, null).toString(); | |
| 99 } | |
| 100 try { | |
| 101 return IOUtils.toString(exported, "utf-8"); | |
| 102 } catch (IOException e) { | |
| 103 return new Response(false, 600, null).toString(); | |
| 104 } | |
| 105 } | |
| 106 } | |
| 107 |