Java tutorial
/** * Copyright (C) 2016-2016 52North Initiative for Geospatial Open Source * Software GmbH * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License version 2 as publishedby the Free * Software Foundation. * * If the program is linked with libraries which are licensed under one of the * following licenses, the combination of the program with the linked library is * not considered a "derivative work" of the program: * * - Apache License, version 2.0 * - Apache Software License, version 1.0 * - GNU Lesser General Public License, version 3 * - Mozilla Public License, versions 1.0, 1.1 and 2.0 * - Common Development and Distribution License (CDDL), version 1.0 * * Therefore the distribution of the program linked with libraries licensed under * the aforementioned licenses, is permitted by the copyright holders if the * distribution is compliant with both the GNU General Public License version 2 * and the aforementioned licenses. * * This program 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. */ package org.n52.tamis.core.json.serialize.processes.execute; import java.io.IOException; import java.util.List; import org.n52.tamis.core.javarepresentations.processes.execute.ExecuteInput; import org.n52.tamis.core.javarepresentations.processes.execute.ExecuteOutput; import org.n52.tamis.core.javarepresentations.processes.execute.Execute_HttpPostBody; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.JsonSerializer; import com.fasterxml.jackson.databind.SerializerProvider; /** * Serializes an instance of {@link Execute_HttpPostBody} into an extended * version that can be used as HTTP POST request body for an execute request * against the WPS proxy. * * @author Christian Danowski (contact: c.danowski@52north.org) * */ public class ExtendedExecuteHttpPostBodySerializer extends JsonSerializer<Execute_HttpPostBody> { private static final Logger logger = LoggerFactory.getLogger(ExtendedExecuteHttpPostBodySerializer.class); @Override public void serialize(Execute_HttpPostBody executeBody_short, JsonGenerator jsonGenerator, SerializerProvider serProvider) throws IOException, JsonProcessingException { logger.info("Start serialization of execute HTTP POST input body \"{}\"", executeBody_short); /* * the structure of the target JSON body looks like: * * { "Execute": { "Identifier": "org.n52.tamis.algorithm.interpolation", "Input": [ { "Input": [ { "Reference": { "_href": "http://fluggs.wupperverband.de/sos2/service?service=SOS&request=GetObservation&version=2.0.0&offering=Zeitreihen_2m_Tiefe&observedProperty=Grundwasserstand&responseFormat=http%3A//www.opengis.net/om/2.0", "_mimeType": "application/om+xml; version=2.0", "_schema": "http://schemas.opengis.net/om/2.0/observation.xsd" }, "_id": "gw1" }, { "Reference": { "_href": "http://fluggs.wupperverband.de/sos2/service?service=SOS&request=GetObservation&version=2.0.0&offering=Zeitreihen_2m_Tiefe&observedProperty=Sohlenwasserdruck&responseFormat=http%3A//www.opengis.net/om/2.0", "_mimeType": "application/om+xml; version=2.0", "_schema": "http://schemas.opengis.net/om/2.0/observation.xsd" }, "_id": "swd1" } ], "_id": "input-variables" }, { "Data": { "_mimeType": "text/xml", "_schema": "http://schemas.opengis.net/gml/3.2.1/base/feature.xsd", "__text": "<wfs:FeatureCollection xmlns:testbed11="http://opengeospatial.org" xmlns:wfs="http://www.opengis.net/wfs" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" xmlns:ows="http://www.opengis.net/ows" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:wml2="http://www.opengis.net/waterml/2.0" xmlns:sf="http://www.opengis.net/sampling/2.0" xmlns:sams="http://www.opengis.net/samplingSpatial/2.0" numberOfFeatures="1" timeStamp="2016-02-15T16:24:55.640Z" xsi:schemaLocation="http://www.opengis.net/wfs http://geoprocessing.demo.52north.org:8080/geoserver/schemas/wfs/1.1.0/wfs.xsd"> <gml:featureMembers> <wml2:MonitoringPoint gml:id="xyz.1"> <gml:identifier codeSpace="http://www.opengis.net/def/nil/OGC/0/unknown">xyz</gml:identifier> <gml:name codeSpace="http://www.opengis.net/def/nil/OGC/0/unknown">xyz</gml:name> <sf:sampledFeature xlink:href="urn:ogc:def:nil:OGC:unknown" /> <sams:shape> <ns:Point xmlns:ns="http://www.opengis.net/gml/3.2" ns:id="point_xyz"> <ns:pos srsName="http://www.opengis.net/def/crs/EPSG/0/31466">5668202.8356 2595842.8958</ns:pos> </ns:Point> </sams:shape> </wml2:MonitoringPoint> </gml:featureMembers> </wfs:FeatureCollection>" }, "_id": "target-variable-point" } ], "output": { "_mimeType": "application/om+xml; version=2.0", "_schema": "http://schemas.opengis.net/om/2.0/observation.xsd", "_id": "estimated-values", "_transmission": "value" }, "_service": "WPS", "_version": "2.0.0"} } */ jsonGenerator.writeStartObject(); jsonGenerator.writeObjectFieldStart("Execute"); jsonGenerator.writeStringField("Identifier", executeBody_short.getProcessId()); jsonGenerator.writeArrayFieldStart("Input"); List<ExecuteInput> inputs = executeBody_short.getInputs(); for (ExecuteInput executeInput : inputs) { jsonGenerator.writeObject(executeInput); } jsonGenerator.writeEndArray(); /** * TODO is it really correct, that "output" starts with a small "o"? */ jsonGenerator.writeArrayFieldStart("output"); List<ExecuteOutput> outputs = executeBody_short.getOutputs(); for (ExecuteOutput executeOutput : outputs) { jsonGenerator.writeObject(executeOutput); } jsonGenerator.writeEndArray(); jsonGenerator.writeStringField("_service", Execute_HttpPostBody.service); jsonGenerator.writeStringField("_version", executeBody_short.getVersion()); jsonGenerator.writeEndObject(); jsonGenerator.writeEndObject(); logger.info("Serialization of execute HTTP POST input body ended."); } }