public Map getResponseHeaders()

in extscript-core-root/extscript-core/src/main/java/org/apache/myfaces/extensions/scripting/jsf/resources/deprecated/ResourceImpl.java [215:259]
32 lines of code
9 McCabe index (conditional complexity)

    public Map<String, String> getResponseHeaders() {
        FacesContext facesContext = FacesContext.getCurrentInstance();

        if (facesContext.getApplication().getResourceHandler().isResourceRequest(facesContext)) {
            Map<String, String> headers = new HashMap<String, String>();

            long lastModified;
            try {
                lastModified = ResourceLoaderUtils.getResourceLastModified(this.getURL());
            } catch (IOException e) {
                lastModified = -1;
            }

            // Here we have two cases: If the file could contain EL Expressions
            // the last modified time is the greatest value between application startup and
            // the value from file.
            if (this.couldResourceContainValueExpressions() &&
                    lastModified < _resourceHandlerSupport.getStartupTime()) {
                lastModified = _resourceHandlerSupport.getStartupTime();
            } else if (_resourceMeta instanceof AliasResourceMetaImpl &&
                    lastModified < _resourceHandlerSupport.getStartupTime()) {
                // If the resource meta is aliased, the last modified time is the greatest 
                // value between application startup and the value from file.
                lastModified = _resourceHandlerSupport.getStartupTime();
            }

            if (lastModified >= 0) {
                headers.put("Last-Modified", ResourceLoaderUtils.formatDateHeader(lastModified));

                long expires;
                if (facesContext.isProjectStage(ProjectStage.Development)) {
                    // Force to expire now to prevent caching on development time.
                    expires = System.currentTimeMillis();
                } else {
                    expires = System.currentTimeMillis() + _resourceHandlerSupport.getMaxTimeExpires();
                }
                headers.put("Expires", ResourceLoaderUtils.formatDateHeader(expires));
            }

            return headers;
        } else {
            //No need to return headers 
            return Collections.emptyMap();
        }
    }