private void showHistoricVersion() {

        String resourceStr = getParamResource();
        byte[] result = getHistoricalResourceContent(getCms(), resourceStr, getParamVersion());
        if (result != null) {
            // get the top level response to change the content type
            String contentType = OpenCms.getResourceManager().getMimeType(
                resourceStr,
                getCms().getRequestContext().getEncoding());

            HttpServletResponse res = getJsp().getResponse();
            HttpServletRequest req = getJsp().getRequest();

            res.setHeader(
                CmsRequestUtil.HEADER_CONTENT_DISPOSITION,
                new StringBuffer("attachment; filename=\"").append(resourceStr).append("\"").toString());
            res.setContentLength(result.length);

            CmsFlexController controller = CmsFlexController.getController(req);
            res = controller.getTopResponse();
            res.setContentType(contentType);

            try {
                res.getOutputStream().write(result);
                res.getOutputStream().flush();
            } catch (IOException e) {
                // can usually be ignored
                if (LOG.isInfoEnabled()) {
                    LOG.info(e.getLocalizedMessage());
                }
            }
        }
    }
private void showHistoricVersion ( ) { String resourceStr = getParamResource ( ) ; byte [ ] result = getHistoricalResourceContent ( getCms ( ) , resourceStr , getParamVersion ( ) ) ; if ( result != null ) { String contentType = OpenCms . getResourceManager ( ) . getMimeType ( resourceStr , getCms ( ) . getRequestContext ( ) . getEncoding ( ) ) ; HttpServletResponse res = getJsp ( ) . getResponse ( ) ; HttpServletRequest req = getJsp ( ) . getRequest ( ) ; res . setHeader ( CmsRequestUtil . HEADER_CONTENT_DISPOSITION , new StringBuffer ( "attachment; filename=\"" ) . append ( resourceStr ) . append ( "\"" ) . toString ( ) ) ; res . setContentLength ( result . length ) ; CmsFlexController controller = CmsFlexController . getController ( req ) ; res = controller . getTopResponse ( ) ; res . setContentType ( contentType ) ; try { res . getOutputStream ( ) . write ( result ) ; res . getOutputStream ( ) . flush ( ) ; } catch ( IOException e ) { if ( LOG . isInfoEnabled ( ) ) { LOG . info ( e . getLocalizedMessage ( ) ) ; } } } }
Displays the requested historic version of the resource.<p>