95 lines
3.3 KiB
Java
95 lines
3.3 KiB
Java
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/**
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* Copyright (C) 2007 - 2016 52°North Initiative for Geospatial Open Source
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* Software GmbH
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* If the program is linked with libraries which are licensed under one of
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* the following licenses, the combination of the program with the linked
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* library is not considered a "derivative work" of the program:
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*
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* • Apache License, version 2.0
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* • Apache Software License, version 1.0
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* • GNU Lesser General Public License, version 3
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* • Mozilla Public License, versions 1.0, 1.1 and 2.0
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* • Common Development and Distribution License (CDDL), version 1.0
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*
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* Therefore the distribution of the program linked with libraries licensed
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* under the aforementioned licenses, is permitted by the copyright holders
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* if the distribution is compliant with both the GNU General Public
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* License version 2 and the aforementioned licenses.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*/
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package org.n52.wps.server.request;
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import java.io.InputStream;
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import org.apache.commons.collections.map.CaseInsensitiveMap;
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import org.n52.wps.server.ExceptionReport;
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import org.n52.wps.server.database.IDatabase;
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import org.n52.wps.server.database.DatabaseFactory;
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import org.n52.wps.server.response.Response;
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import org.n52.wps.server.response.RetrieveResultResponse;
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/**
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* If the server is too busy or the computation is too long,
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* the client can retrieve the result at a later time.
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* This class represents a Request to obtain the result.
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* The respons might be the result, be also could contain a
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* message that the result is not available yet.
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*/
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public class RetrieveResultRequest extends Request {
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private InputStream storedResponse = null;
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/**
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* Create a Request based on a CaseInsensitiveMap as input (HTTP GET)
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* @param ciMap The Map which holds the client input.
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*/
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public RetrieveResultRequest(CaseInsensitiveMap ciMap) throws ExceptionReport{
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super(ciMap);
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}
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/**
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* Actually serves the Request.
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* @throws ExceptionReport
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*/
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public Response call() throws ExceptionReport {
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if(validate()){
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return new RetrieveResultResponse(this);
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}
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return null;
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}
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/**
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* Validates the client input
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* @return True if the input is valid, False otherwise
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*/
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public boolean validate() throws ExceptionReport {
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String req_id = getMapValue("request_id", true);
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if(req_id.length() == 0){
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throw new ExceptionReport("The value of parameter <request_id> is not valid.", ExceptionReport.INVALID_PARAMETER_VALUE);
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}
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try{
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}catch(NumberFormatException e){
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throw new ExceptionReport("The value of parameter <request_id> is not an integer identifier", ExceptionReport.INVALID_PARAMETER_VALUE);
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}
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IDatabase db = DatabaseFactory.getDatabase();
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this.storedResponse = db.lookupResponse(req_id);
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return (this.storedResponse != null);
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}
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public Object getAttachedResult() throws NullPointerException {
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if(this.storedResponse == null)
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throw new NullPointerException("No stored responses were found!");
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return this.storedResponse;
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}
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}
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