95 lines
3.3 KiB
Java
95 lines
3.3 KiB
Java
/**
|
||
* Copyright (C) 2007 - 2016 52°North 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 published
|
||
* by 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.wps.server.request;
|
||
|
||
import java.io.InputStream;
|
||
|
||
import org.apache.commons.collections.map.CaseInsensitiveMap;
|
||
import org.n52.wps.server.ExceptionReport;
|
||
import org.n52.wps.server.database.IDatabase;
|
||
import org.n52.wps.server.database.DatabaseFactory;
|
||
import org.n52.wps.server.response.Response;
|
||
import org.n52.wps.server.response.RetrieveResultResponse;
|
||
|
||
/**
|
||
* If the server is too busy or the computation is too long,
|
||
* the client can retrieve the result at a later time.
|
||
* This class represents a Request to obtain the result.
|
||
* The respons might be the result, be also could contain a
|
||
* message that the result is not available yet.
|
||
*/
|
||
public class RetrieveResultRequest extends Request {
|
||
|
||
private InputStream storedResponse = null;
|
||
|
||
/**
|
||
* Create a Request based on a CaseInsensitiveMap as input (HTTP GET)
|
||
* @param ciMap The Map which holds the client input.
|
||
*/
|
||
public RetrieveResultRequest(CaseInsensitiveMap ciMap) throws ExceptionReport{
|
||
super(ciMap);
|
||
}
|
||
|
||
/**
|
||
* Actually serves the Request.
|
||
* @throws ExceptionReport
|
||
*/
|
||
public Response call() throws ExceptionReport {
|
||
if(validate()){
|
||
return new RetrieveResultResponse(this);
|
||
}
|
||
return null;
|
||
}
|
||
|
||
/**
|
||
* Validates the client input
|
||
* @return True if the input is valid, False otherwise
|
||
*/
|
||
public boolean validate() throws ExceptionReport {
|
||
String req_id = getMapValue("request_id", true);
|
||
if(req_id.length() == 0){
|
||
throw new ExceptionReport("The value of parameter <request_id> is not valid.", ExceptionReport.INVALID_PARAMETER_VALUE);
|
||
}
|
||
try{
|
||
}catch(NumberFormatException e){
|
||
throw new ExceptionReport("The value of parameter <request_id> is not an integer identifier", ExceptionReport.INVALID_PARAMETER_VALUE);
|
||
}
|
||
IDatabase db = DatabaseFactory.getDatabase();
|
||
this.storedResponse = db.lookupResponse(req_id);
|
||
return (this.storedResponse != null);
|
||
}
|
||
|
||
public Object getAttachedResult() throws NullPointerException {
|
||
if(this.storedResponse == null)
|
||
throw new NullPointerException("No stored responses were found!");
|
||
return this.storedResponse;
|
||
}
|
||
|
||
}
|