本文整理汇总了Java中com.google.appengine.api.datastore.PreparedQuery.asQueryResultList方法的典型用法代码示例。如果您正苦于以下问题：Java PreparedQuery.asQueryResultList方法的具体用法？Java PreparedQuery.asQueryResultList怎么用？Java PreparedQuery.asQueryResultList使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.google.appengine.api.datastore.PreparedQuery的用法示例。
在下文中一共展示了PreparedQuery.asQueryResultList方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testIndexListFromList
import com.google.appengine.api.datastore.PreparedQuery; //导入方法依赖的package包/类
@Test
public void testIndexListFromList() throws Exception {
Entity parent = createTestEntityWithUniqueMethodNameKey("Person", "testKeysOnly");
Key key = parent.getKey();
Entity joe = createEntity("Person", key)
.withProperty("name", "Joe")
.withProperty("surname", "Moe")
.store();
Query query = new Query("Person")
.setAncestor(key)
.setKeysOnly();
PreparedQuery preparedQuery = service.prepare(query);
QueryResultList<Entity> list = preparedQuery.asQueryResultList(FetchOptions.Builder.withDefaults());
List<Index> indexes = list.getIndexList();
if (indexes != null) {
// TODO -- something useful
System.out.println("indexes = " + indexes);
}
}
示例2: getFirstCursor
import com.google.appengine.api.datastore.PreparedQuery; //导入方法依赖的package包/类
private String getFirstCursor() {
Query q = new Query("Person").addSort("name", SortDirection.ASCENDING);
PreparedQuery pq = datastore.prepare(q);
FetchOptions fetchOptions = FetchOptions.Builder.withLimit(ListPeopleServlet.PAGE_SIZE);
QueryResultList<Entity> results = pq.asQueryResultList(fetchOptions);
return results.getCursor().toWebSafeString();
}
示例3: getRelatedEntities
import com.google.appengine.api.datastore.PreparedQuery; //导入方法依赖的package包/类
@ApiMethod(name = "getRelatedEntities", scopes = { Config.EMAIL_SCOPE }, clientIds = { Config.CHROME_CLIENT_ID, Config.WEB_CLIENT_ID,
Config.API_EXPLORER_CLIENT_ID })
public List<Long> getRelatedEntities(@Named("_name") String _name, @Named("_relatedEntityName") String _relatedEntityName, @Named("_id") Long _id, User user) throws UnauthorizedException {
if (user == null) {
throw new UnauthorizedException(
"UnauthorizedException # User is Null.");
}
DatastoreService datastore = DatastoreServiceFactory
.getDatastoreService();
FetchOptions fetchOptions = FetchOptions.Builder.withDefaults();
Filter f = new FilterPredicate(_relatedEntityName+"_id", FilterOperator.EQUAL, _id);
Query q = new Query(_name).setFilter(f);
PreparedQuery pq = datastore.prepare(q);
QueryResultList<Entity> results = pq.asQueryResultList(fetchOptions);
List<Long> relatedEntityIds = new ArrayList<Long>();
for (Entity entity : results) {
Map<String, Object> properties = entity.getProperties();
Set<String> keySet = properties.keySet();
for (String mapKey : keySet) {
if(mapKey.equals("_id")){
continue;
}
else if(mapKey.equals(_relatedEntityName+"_id")){
continue;
}
else if(mapKey.endsWith("_id")){
relatedEntityIds.add((Long)properties.get(mapKey));
}
}
}
return relatedEntityIds;
}
示例4: doGet
import com.google.appengine.api.datastore.PreparedQuery; //导入方法依赖的package包/类
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
FetchOptions fetchOptions = FetchOptions.Builder.withLimit(PAGE_SIZE);
// If this servlet is passed a cursor parameter, let's use it.
String startCursor = req.getParameter("cursor");
if (startCursor != null) {
fetchOptions.startCursor(Cursor.fromWebSafeString(startCursor));
}
Query q = new Query("Person").addSort("name", SortDirection.ASCENDING);
PreparedQuery pq = datastore.prepare(q);
QueryResultList<Entity> results;
try {
results = pq.asQueryResultList(fetchOptions);
} catch (IllegalArgumentException e) {
// IllegalArgumentException happens when an invalid cursor is used.
// A user could have manually entered a bad cursor in the URL or there
// may have been an internal implementation detail change in App Engine.
// Redirect to the page without the cursor parameter to show something
// rather than an error.
resp.sendRedirect("/people");
return;
}
resp.setContentType("text/html");
resp.setCharacterEncoding("UTF-8");
PrintWriter w = resp.getWriter();
w.println("<!DOCTYPE html>");
w.println("<meta charset=\"utf-8\">");
w.println("<title>Cloud Datastore Cursor Sample</title>");
w.println("<ul>");
for (Entity entity : results) {
w.println("<li>" + entity.getProperty("name") + "</li>");
}
w.println("</ul>");
String cursorString = results.getCursor().toWebSafeString();
// This servlet lives at '/people'.
w.println("<a href='/people?cursor=" + cursorString + "'>Next page</a>");
}
示例5: findAll
import com.google.appengine.api.datastore.PreparedQuery; //导入方法依赖的package包/类
/**
* This method lists all the entities inserted in datastore. It uses HTTP GET method and paging support.
*
* @return A CollectionResponse class containing the list of all entities persisted and a cursor to the next page.
* @throws UnauthorizedException
*/
@ApiMethod(name = "findAll", scopes = { Config.EMAIL_SCOPE }, clientIds = { Config.CHROME_CLIENT_ID, Config.WEB_CLIENT_ID,
Config.API_EXPLORER_CLIENT_ID })
public CollectionResponse<ServiceResponse> findAll(@Named("_name") String _name, @Nullable @Named("cursor") String cursorString,
@Nullable @Named("limit") Integer limit, User user) throws UnauthorizedException {
if (user == null) {
throw new UnauthorizedException(
"UnauthorizedException # User is Null.");
}
DatastoreService datastore = DatastoreServiceFactory
.getDatastoreService();
if (limit == null) {
limit = 10;
}
FetchOptions fetchOptions = FetchOptions.Builder.withLimit(limit);
if (cursorString != null) {
fetchOptions.startCursor(Cursor.fromWebSafeString(cursorString));
}
Query q = new Query(_name);
q.addSort("_updatedAt", SortDirection.DESCENDING);
PreparedQuery pq = datastore.prepare(q);
QueryResultList<Entity> results = pq.asQueryResultList(fetchOptions);
List<ServiceResponse> responses = new ArrayList<ServiceResponse>();
ServiceResponse res = null;
for (Entity entity : results) {
res = new ServiceResponse();
//TODO add properties from entity to service response
res.set_id(entity.getKey().getId());
res.set_createdAt((Date) entity.getProperty(_createdAt));
res.set_createdBy((String) entity.getProperty(_createdBy));
res.set_upatedAt((Date) entity.getProperty(_updatedAt));
res.set_updatedBy((String) entity.getProperty(_updatedBy));
res.set_status((String) entity.getProperty(_status));
Text dataText = (Text)entity.getProperty(data);
res.setData(dataText.getValue());
responses.add(res);
}
cursorString = results.getCursor().toWebSafeString();
return CollectionResponse.<ServiceResponse> builder().setItems(responses).setNextPageToken(cursorString).build();
}