It's located at Eclipse workspace\Your
app\war\WEB-INF\appengine-generated ...
On Sun, Jun 13, 2010 at 3:25 PM, quqtalk quqt...@gmail.com wrote:
Use below Java code:
private static final PersistenceManagerFactory pmfInstance =
JDOHelper.getPersistenceManagerFactory(transactions-optional);
Can you please try:
select count (this) from entity?
This topic was discussed once or more in the group...
On Fri, Jun 11, 2010 at 5:39 PM, RAVINDER MAAN rsmaan...@gmail.com wrote:
How can we get records count for a query in JDO.
In sql we have select count(*) from table_name
i want to get
Did you have different entity groups inside a transaction?
Google have a constraint of what can be done in a transaction here
http://code.google.com/appengine/docs/python/datastore/transactions.html#What_Can_Be_Done_In_a_Transaction
On Fri, Jun 4, 2010 at 5:45 PM, JD liva...@gmail.com wrote:
Check this out
http://gae-java-persistence.blogspot.com/2010/01/querying-with-key-parameters.html
Key is special datatype and you will need to use help API by Google to
re-create the key before passing it in.
On Sun, May 30, 2010 at 9:47 PM, Dormand mfjhs...@gmail.com wrote:
Hi, I have a
Hello Google,
Can you please help me to delete an error version in my app?
When I tried to delete it, the system reported
Server Error. A server error has occurred.
My app id: gaepocdemo
Error version: 3
Thanks
--
You received this message because you are subscribed to the Google Groups
that it can be shared
between the jvm instances.
Any pointers or clues highly appreciated.
Thanks,
Rahul
On May 22, 10:51 pm, Chau Huynh cmhu...@gmail.com wrote:
It seems like loading request...
http://code.google.com/appengine/kb/java.html#What_Is_A_Loading_Request
On Sun, May 23, 2010
It seems like loading request...
http://code.google.com/appengine/kb/java.html#What_Is_A_Loading_Request
On Sun, May 23, 2010 at 4:55 AM, Rahul rahul.jun...@gmail.com wrote:
I have an application running on appengine and no doubt it works
great. but when the application is not used for some
You can take a look on 4 types of key on app engine and choose what you
want:
http://code.google.com/appengine/docs/java/datastore/creatinggettinganddeletingdata.html#Keys
On Sat, May 22, 2010 at 5:35 AM, aijazzz aija...@gmail.com wrote:
Hi,
I was looking to some examples to start my work on
Have you tried searching the groups, this topic was discussed in detail with
experience shared..
http://groups.google.com/group/google-appengine-java/search?group=google-appengine-javaq=delete+all+entitiesqt_g=Search+this+group
In summary, advise from the group is to use Task Queue to work on
I just wonder if you need an unique ID only, then you can let Google do it
for you (sorry if this interrupted your discussion)
Can you please try declare the date parameter and let the library help you
pass it in?
WHERE date :date
query.setParameter(date, date);
On Fri, May 7, 2010 at 12:19 PM, CodeMan chinu...@yahoo.com wrote:
Hi,
I am trying to fetch all records after a timestamp with this query
select from
QueryResultIterator so the getCursor() call will return the correct
location.
Jeff
On Thu, May 6, 2010 at 8:48 PM, Chau Huynh cmhu...@gmail.com wrote:
Hi Jeff,
With JPA I will need to excute getResultList() to get a collection
http://java.sun.com/javaee/5/docs/api/javax/persistence/Query.html
My entity classes were annotated, and work both in local and appspot. Thanks
On Thu, May 6, 2010 at 4:02 PM, Simon qila...@gmail.com wrote:
Has anyone managed to get the JPA lifecycle callbacks to work?
I've annotated methods with @PrePersist and @PostLoad and the methods
just never get
share?
On May 6, 10:15 am, Chau Huynh cmhu...@gmail.com wrote:
My entity classes were annotated, and work both in local and appspot.
Thanks
On Thu, May 6, 2010 at 4:02 PM, Simon qila...@gmail.com wrote:
Has anyone managed to get the JPA lifecycle callbacks to work?
I've
Have you tried with KeyFactory?
http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/datastore/KeyFactory.html
In this post Max Ross of Google guided how to query with Key, may it help
you..
http://gae-java-persistence.blogspot.com/2010/01/querying-with-key-parameters.html
Hi Jeff,
With JPA I will need to excute getResultList() to get a collection
http://java.sun.com/javaee/5/docs/api/javax/persistence/Query.html#getResultList()
Somehow org.datanucleus.store.appengine.query.getCursor(Iterator? iter)
can not get the cursor in the middle of my iterator, a null value
There's 1 typo in my message, please read
org.datanucleus.store.appengine.query.CursorHelper.getCursor(Iterator?
iter)
Thanks
On Fri, May 7, 2010 at 10:48 AM, Chau Huynh cmhu...@gmail.com wrote:
Hi Jeff,
With JPA I will need to excute getResultList() to get a collection
http
Hello app engine team,
It seems to me there is an issue trying to persist a @Version int field.
System reports error ClassCassException from Long to Integer...
java.lang.ClassCastException: java.lang.Long cannot be cast to
java.lang.Integer
at test.TestEntity.jdoReplaceField(TestEntity.java)
Hello,
Can anyone please advise how to get @PostConstruct invoked in App Engine
(SDK version 1.3.3.1)?
I tried with servlet and JPA/JDO but the conallback method was not
triggered.
Can you please take a look and let me know if I missed something? Thanks.
public class TestServlet extends
Hi,
Cursor provides a point so that query will execute after that.
I don't think you can achieve the same thing with query.setFirstResult()
Below is code I ran based on consulting JDO example and JPA javadocs. Hope
this helps
EntityManager em = ...
Query query = em.createQuery(queryString);
About JDO/JPA, I tried the same thing, and Google advised to make 2 calls:
the first one is your query,
the second one, which is a key-only single item query so that it can be
cheap, to check if more data is available.
the entities:
http://code.google.com/appengine/docs/java/datastore/queriesandindexes.html#Queries_on_Keys
On Wed, Apr 21, 2010 at 4:10 AM, Chau Huynh cmhu...@gmail.com wrote:
Hello app engine team,
I'd like to have a search form, which allows user to search next if more
result available
You can find a more detailed discussion on this here
http://groups.google.com/group/google-appengine-java/browse_thread/thread/da8b96441b0ae038/667aac2bb4109097?lnk=raot
On Fri, Apr 30, 2010 at 1:17 AM, korey_sed kouro...@gmail.com wrote:
I wonder if the java datastore API's cursor is a forward
Maybe Query.addFilter() can help you?
http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/datastore/Query.html#addFilter%28java.lang.String,%20com.google.appengine.api.datastore.Query.FilterOperator,%20java.lang.Object%29
Just wonder if JPA/JDO can fit into your case:
I think korey_sed wanted to share knowledge base on his hand on experience,
his example should work...
The point in his example is querying with key, whether it's in child on
parent or child class
http://gae-java-persistence.blogspot.com/2010/01/querying-with-key-parameters.html
Obviously loading
Hi, Query.addFilter() help to add filter, but not with OR operation as your
need (sorry for my bad reading).
http://gae-java-persistence.blogspot.com/2009/12/queries-with-and-in-filters.html
This post explained that JPA/JDO (datanucleus-appengine) in fact break the
query into multiple ones.
If
, Chau Huynh cmhu...@gmail.com wrote:
On Wed, Apr 28, 2010 at 5:24 AM, Joe Fawzy joewic...@gmail.com wrote:
select count (this) from User
Since when app engine support group operation? ;-)
On Wed, Apr 28, 2010 at 5:24 AM, Joe Fawzy joewic...@gmail.com wrote:
Hi all
i am
it, then change to the
new version, delete the old one.
BaTien
DBGROUPS and BudhNet
On Wed, 2010-04-28 at 11:15 +0700, Chau Huynh wrote:
Delete the version and redeploy, maybe?
Or should Google hep you look into your case, as App Engine user do
not have such direct control on their system
Hi Jaroslav,
I think the Article entity returned was detached already, right?
In fact you can try a simple test by modifying the returned object and
verify it value on Admin Console.
The PersistenceManagerFactory takes time to init, but once only (
http://www.datanucleus.org/products/accessplatform_2_0/jdo/jdoql.htmlExample
3 is the right answer for you.
It might be better if you could go through document to have an understanding
on its concepts first.
Thanks.
On Wed, Apr 28, 2010 at 1:36 AM, Vinay vinaytand...@gmail.com wrote:
Hi,
I am
On Wed, Apr 28, 2010 at 5:24 AM, Joe Fawzy joewic...@gmail.com wrote:
select count (this) from User
Since when app engine support group operation? ;-)
On Wed, Apr 28, 2010 at 5:24 AM, Joe Fawzy joewic...@gmail.com wrote:
Hi all
i am using JDO and i want to count the number of entities so which
Delete the version and redeploy, maybe?
Or should Google hep you look into your case, as App Engine user do not have
such direct control on their system to reboot.
On Wed, Apr 28, 2010 at 10:54 AM, Phuong Nguyen phuongn...@gmail.comwrote:
I think disable/enable your app doesnot reboot JVM.
Maybe you can look into low level API to obtain a lock
http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/memcache/MemcacheService.html#increment%28java.lang.Object,%20long%29
There're also sample implementation using this posted in the group
Hello app engine team,
I'd like to have a search form, which allows user to search next if more
result available by using a Cursor.
My issue is, in the last chunk, I am not able to detect if it's.
Therefore, I will need to execute one additional query to test if more data.
Can you please advise
On Tue, Apr 20, 2010 at 5:48 PM, DeliveryNinja noble1...@googlemail.comwrote:
It seems that having any data in the ListComment comments in the
Content.java causes the serialization error. Even when I've removed
all the data from the Serializable class Comment.java. So it has
nothing but a
Please try verification step in Getting Java session from the tutorial
http://code.google.com/appengine/docs/java/gettingstarted/installing.html
java -version
javac -version
If error, it's likely you need to add {JAVA_HOME}\bin to Path variable.
Typically you might need to remove bin out of your
());
if (user != null) {
resp.setContentType(text/plain);
resp.getWriter().println(Hello, + user.getNickname());
} else {
resp.sendRedirect(userService.createLoginURL(req.getRequestURI()));
}
}
}
On Fri, Apr 16, 2010 at 12:16 PM, Chau Huynh cmhu
Hello,
It looks like a typo in
http://code.google.com/appengine/docs/java/config/webxml.html#Filters
Code: filterConfig.doFilter(request, response);
Also sample LogFilterImpl does not implement all methods defined in javax.
servlet.Filter
Can you please take a look and update. Thanks
--
You
First of all, please accept big thanks, Andreas. Those knowledge sharing is
helpful to me as well as other learners.
Follow the thread, I think I was a bit misled on benefit of SQL/JDBC on GAE.
In Andreas blog's, he mentioned on learning curve to deal with the mapping:
Java classess -- JDO/JPA -
You might want to use wrapper class (Long instead of long) to add new field
to load existing data.
To remove a property, you will need to update your Java class first, right?
Later retrieval of an instance, the field is not get loaded, then you
save/persist and the field is gone.
About changing
As a non native English speaker also, let me guess If I got you correctly,
dreamy
You want to manipulate Telephone separately, independent of its-owner-to-be,
so you will have a Telephone class.
Similarly, you will have another class for Person.
Because there're no dependency between creating of
was wrong, and maybe it just needs a correction on
the version number.
thanks in advance!
On Mar 15, 11:54 pm, Chau Huynh cmhu...@gmail.com wrote:
Hi,
The struts binaries can be found on Struts download page:
http://struts.apache.org/download.cgi
Although it's quite a bit difficult to find
Quote: You can ignore it. It's a red herring
http://tinyurl.com/y8tlejthttp://www.google.com/url?sa=Dq=http://tinyurl.com/y8tlejtusg=AFQjCNFIMnUbbdgwZwSca1czKxGrbQFz8Q.
(
https://groups.google.com/group/google-appengine-java/browse_thread/thread/9d019bda2070e382
)
On Thu, Mar 4, 2010 at 12:04 AM,
Perhaps you'd better use your own userssion with one pojo class
I don't think you would sacrifice User service (and its scalability) to deal
with the concern opok posted below.
Hi opok,
I notice that the user service does not need HttpServletRequest to get the
current context, is that reliable?
I think you can start reading the guide, let me google that for you...
http://code.google.com/appengine/docs/java/datastore/
2010/2/22 Ngô Chí Lê lengo...@gmail.com
Hi, I'm a new IT, I'm working on Google App Engine using Eclipse, I
have two questions for you:
1/I want to create two entities
Beside useful hint from Jake, providing links by google search might be
helpful to you http://tinyurl.com/cofmen
Specifically, you might need to look into Get Started guide...
On Fri, Feb 12, 2010 at 4:12 PM, maheswari maheswari rma...@gmail.comwrote:
is their is any authentication required to
http://code.google.com/appengine/docs/java/howto/unittesting.html#Writing_Datastore_Tests
I wonder if your team members can share same test case
and local_db.bin in each of your environment can have similar record.
I just read it, so please try and advise if it work. Thanks
-Chau
On Wed, Feb 3,
Thanks John and Jeff for sharing the knowledge.
I've just quickly scanned your project home, and I have a novice question
that needs your help:
Is twig or Objectify direct replacement to JDO / JPA on GAE? I just need to
use your framework alone, or should use in combination with JDO / JPA
support?
I'm just curious how you share code among your team without using
subversion?
-Chau
On Tue, Jan 19, 2010 at 10:38 PM, dominity domin...@gmail.com wrote:
Hi, guys.
I've got one simple question.
There is team of developers that creates any kind of web application.
Web application is hosted on
Queries must go with indexes (
http://code.google.com/appengine/docs/java/datastore/queriesandindexes.html)
For the column, you can store it as lowercase/uppercase,
For the display column, you can store the original value.
On Sun, Jan 17, 2010 at 2:15 PM, Sahil Mahajan sahilm2...@gmail.com wrote:
http://code.google.com/appengine/docs/java/datastore/queriesandindexes.html#Introducing_Queries
In Query Filters section, it mentions that A filter specifies a field
name, an operator, and a value. The value must be provided by the app; it
cannot refer to another field, or be calculated in terms
51 matches
Mail list logo
