/**
* Copyright (c) 2009, Signavio GmbH
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.signavio.platform.handler;
import java.io.IOException;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.JSONException;
import org.json.JSONObject;
import com.signavio.platform.annotations.HandlerExportConfiguration;
import com.signavio.platform.annotations.HandlerMethodActivation;
import com.signavio.platform.exceptions.RequestException;
import com.signavio.platform.security.business.FsAccessToken;
import com.signavio.platform.security.business.FsSecureBusinessObject;
public abstract class ExportHandler extends AbstractHandler {
public ExportHandler(ServletContext servletContext) {
super(servletContext);
}
@Override
@HandlerMethodActivation
public <T extends FsSecureBusinessObject> Object getRepresentation(T sbo, Object params, FsAccessToken token){
JSONObject j = new JSONObject();
HandlerExportConfiguration an = this.getClass().getAnnotation(HandlerExportConfiguration.class);
if( an != null ){
try {
j.put("name", an.name());
j.put("icon", an.icon());
j.put("mime", an.mime());
} catch (JSONException e) {}
}
return j;
}
public <T extends FsSecureBusinessObject> byte[] doExport(T sbo, Object params){
return null;
}
@Override
public <T extends FsSecureBusinessObject> void doGet(HttpServletRequest req, HttpServletResponse res, FsAccessToken token, T sbo ) {
HandlerMethodActivation ac;
try {
ac = this.getClass().getMethod("doExport", new Class[]{FsSecureBusinessObject.class, Object.class}).getAnnotation(HandlerMethodActivation.class);
HandlerExportConfiguration an = this.getClass().getAnnotation(HandlerExportConfiguration.class);
if( an != null && ac != null ){
res.setStatus(200);
res.setContentType(an.mime());
res.setHeader("Expires", "0");
setFileName(sbo, res);
res.getOutputStream().write( doExport(sbo, req.getAttribute("params")) );
} else {
res.setStatus(404);
}
}catch (NoSuchMethodException e) {
throw new RequestException("platform.nosuchmethod", e);
} catch (IOException e) {
throw new RequestException("platform.ioexception", e);
}
}
protected void setFileName(FsSecureBusinessObject sbo, HttpServletResponse res) {
HandlerExportConfiguration an = this.getClass().getAnnotation(HandlerExportConfiguration.class);
res.setHeader("Content-Disposition", " "+(an.download()?"attachment":"inline")+"; filename=\"" + sbo.getId() + "." + an.name().toLowerCase()+"\"");
}
}