protected void doGet(final HttpServletRequest request, final HttpServletResponse response) throws UnsupportedEncodingException {
SecurityContext securityContext = null;
Authenticator authenticator = null;
Result result = null;
Resource resource = null;
try {
// isolate request authentication in a transaction
try (final Tx tx = StructrApp.getInstance().tx()) {
authenticator = config.getAuthenticator();
securityContext = authenticator.initializeAndExamineRequest(request, response);
tx.success();
}
final App app = StructrApp.getInstance(securityContext);
// logRequest("GET", request);
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/csv; charset=utf-8");
// set default value for property view
propertyView.set(securityContext, defaultPropertyView);
// evaluate constraints and measure query time
double queryTimeStart = System.nanoTime();
// isolate resource authentication
try (final Tx tx = app.tx()) {
resource = ResourceHelper.optimizeNestedResourceChain(ResourceHelper.parsePath(securityContext, request, resourceMap, propertyView, defaultIdProperty), defaultIdProperty);
authenticator.checkResourceAccess(request, resource.getResourceSignature(), propertyView.get(securityContext));
tx.success();
}
try (final Tx tx = app.tx()) {
String resourceSignature = resource.getResourceSignature();
// let authenticator examine request again
authenticator.checkResourceAccess(request, resourceSignature, propertyView.get(securityContext));
// add sorting & paging
String pageSizeParameter = request.getParameter(JsonRestServlet.REQUEST_PARAMETER_PAGE_SIZE);
String pageParameter = request.getParameter(JsonRestServlet.REQUEST_PARAMETER_PAGE_NUMBER);
String offsetId = request.getParameter(JsonRestServlet.REQUEST_PARAMETER_OFFSET_ID);
String sortOrder = request.getParameter(JsonRestServlet.REQUEST_PARAMETER_SORT_ORDER);
String sortKeyName = request.getParameter(JsonRestServlet.REQUEST_PARAMETER_SORT_KEY);
boolean sortDescending = (sortOrder != null && "desc".equals(sortOrder.toLowerCase()));
int pageSize = HttpService.parseInt(pageSizeParameter, NodeFactory.DEFAULT_PAGE_SIZE);
int page = HttpService.parseInt(pageParameter, NodeFactory.DEFAULT_PAGE);
PropertyKey sortKey = null;
// set sort key
if (sortKeyName != null) {
Class<? extends GraphObject> type = resource.getEntityClass();
sortKey = StructrApp.getConfiguration().getPropertyKeyForDatabaseName(type, sortKeyName);
}
// Should line breaks be removed?
removeLineBreaks = StringUtils.equals(request.getParameter(REMOVE_LINE_BREAK_PARAM), "1");
// Should a leading BOM be written?
writeBom = StringUtils.equals(request.getParameter(WRITE_BOM), "1");
// do action
result = resource.doGet(sortKey, sortDescending, pageSize, page, offsetId);
result.setIsCollection(resource.isCollectionResource());
result.setIsPrimitiveArray(resource.isPrimitiveArray());
// Integer rawResultCount = (Integer) Services.getAttribute(NodeFactory.RAW_RESULT_COUNT + Thread.currentThread().getId());
PagingHelper.addPagingParameter(result, pageSize, page);
// Services.removeAttribute(NodeFactory.RAW_RESULT_COUNT + Thread.currentThread().getId());
// timing..
double queryTimeEnd = System.nanoTime();
// commit response
if (result != null) {
// store property view that will be used to render the results
result.setPropertyView(propertyView.get(securityContext));
// allow resource to modify result set
resource.postProcessResultSet(result);
DecimalFormat decimalFormat = new DecimalFormat("0.000000000", DecimalFormatSymbols.getInstance(Locale.ENGLISH));
result.setQueryTime(decimalFormat.format((queryTimeEnd - queryTimeStart) / 1000000000.0));