I begin to use Spring Security.
Now I learn how to use OpenID or OAuth with Spring Security...
Regards,
-Andrey
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What strange behaviour exactly? I think you should serialize the
portfolio object before you should store it to session.
Another thing is, IMO you should not store too many things to the
session. But that's me. I'd like to know other people's thoughts
On Nov 24, 9:37 am, Don wrote:
> Hi,
>
>
http://www.datanucleus.org/products/accessplatform_2_0/persistence_api.html
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I also have the same issue when retrieving session objects from a
servlet filter, and running in the local sandbox.
On Nov 21, 10:11 pm, Sanjay wrote:
> Did you solve this problem? I am facing exactly same problem, it would
> be nice if you could share the solution if you found one.
>
> Thank you
Environment :GAE for java, JPA
I defined a java object(POJO) and stored some data in it. But later I
found a property of that java object(POJO) was useless,
and there was no data in that property.So I removed that property, but
that caused a big problem, the data in that
java object(POJO) can not
> EntityManager em = EMF.get().createEntityManager();
> PrintWriter out = response.getWriter();
>
> List dogs;
>
> try {
>
> Query query = em.createQuery("SELECT FROM Dog WHERE
> dogFriends = :key");
> query.setParameter("key", key);
>
> EntityManager em = EMF.get().createEntityManager();
> PrintWriter out = response.getWriter();
>
> List dogs;
>
> try {
>
> Query query = em.createQuery("SELECT FROM Dog WHERE
> dogFriends = :key");
> query.setParameter("key", key);
>
For GAE it developers it will be mostly a matter of preference. There
are purists on both sides of the fence, although from a market share
perspective I think JPA has the upper hand. I base this on the number
of recent articles, support by commercial application containers, and
job applican
Craig,
The short answer is. No threads may not be spawned. Use the datastore
to update/change status for the users. Only use memcache for reference
information or information which a invalid current status may be
acceptable. If the current status of a user must be valid, then the
da
//I figured out the problem. Example case: POST Request from a webpage
with 2 text fields (userEmail = '5...@gmail.com', and favCar =
'corvette')
//If I use
String email = req.getParameter("userEmail")
//and then try to get the whole body of the POST
InputStream inputStream = req.getInputStream()
FYI a couple of notes:
1) InputStream.available() only tells you how many bytes can be read without
blocking. From its specification:
It is never correct to use the return value of this method to allocate a
> buffer intended to hold all data in this stream.
Just don't use it.
2) InputStream.re
Hi,
I am trying to store an object in the session in servlet by
req.getSession().setAttribute("portofolio", portofolio);
where portofolio is an object with about 10variables and functions.
However, App engine behaves strangely when I do this, so I resorted to
just saving strings into session att
Thanks Ikai. The approach you suggested for exporting the key field
worked for me.
Len
On Nov 19, 5:36 pm, "Ikai L (Google)" wrote:
> Len,
>
> I assume you are doing this by having different application versions for a
> Python application and Java application as documented here:
>
> http://goog
David,
We keep on eye on what seems to be blocking developers the most. We've got a
few open issues for AWT:
http://code.google.com/p/googleappengine/issues/list?can=2&q=awt
You'll want to star the issues as needed or create a new one with your use
case in the description.
On Fri, Nov 20, 2009
protected void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
String keyString = request.getParameter("key");
PersistenceManager pm = PMF.get().getPersistenceManager();
Image image = (Image) pm.getObjectById(Image.class
What are you posting? This code works for me:
public class TestPostServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
InputStream in = request.getInputStream();
int size = in.ava
Found this doc on Google, it might help you :
http://balusc.blogspot.com/2007/04/imageservlet.html#ImageServletServingFromDatabase
On 20 nov, 05:09, java-dev wrote:
> hi all,
>
> I need some help with images in appengine using java. Now I have
> sucessfully uploaded an image file and stored it t
Hey all,
Are there any built in tools in the API to translate a managed JDO
object into a low-level Entity?
I want to do a batch put of some JDO-managed objects and some low-
level Entities. If I could translate JDO-managed objects into bigtable
Entities, I could do this in one call to the low-le
Thanks for the report! I've made a lot of fixes since the RC1 build but
they're not backwards-compatible with the 1.2.6 SDK, so unfortunately I
can't release them until the next SDK is out. Your test case works for me
with my latest build so this will behave correctly in the next release.
Thanks
Here's a video from Google I/O last year about complex data modeling on App
Engine. It talks a little bit about how we do indexing underneath the hood:
http://www.youtube.com/watch?v=AgaL6NGpkB8
Look for an upcoming article about the subject. App Engine Datastore is
built on top of BigTable. It's
>> http://datanucleus-appengine.googlecode.com/files/appengine-orm-1.0.4.RC1.zip
>> This release provides support for inheritance of native datastore types and
>> embedded classes.
Can't get inheritance to run. Tested on *-1.0.3 and *-1.0.4.RC1.
Without AbstractEntity, 2 entities with OneToMany r
Try
@Persistent(defaultFetchGroup = "true")
on anything that's not listed in the Core Value Types table on
http://code.google.com/appengine/docs/java/datastore/dataclasses.html
Jolam wrote:
> This is the object:
> ___
>
> @PersistenceCapable(identityType = IdentityType.APP
If you look at Max's examples and test code he does everything in both JDO and
JPA, so it seems to me that it's a coin toss.
I went with JDO because I heard that it's not as strongly oriented to
relational sql databases.
Rafael Reuber wrote:
> Hi there,
>
> What's the better suport for G
How about Google Accounts?
http://code.google.com/appengine/docs/java/users/
Or, if you want something even more widespread, there's OpenID;
http://openid.net/
On the OpenID site, look at the list at the bottom, "Who is using OpenID".
Yiming Li wrote:
> Hi Andrey,
> I don't know t
I'm thinking of something like a "tips and tricks" section that goes over these
extensions as well as JDO/JPA things that might be particularly useful with
GAE, with examples of how they're useful with GAE. For example, parent-pk, and
then in Max's recent article, @PrePersist, @PreUpdate, and t
I'm happy to add this to the official docs if it isn't clear. I think this
makes sense under the JPA section or the section about ancestor queries.
On Sun, Nov 22, 2009 at 11:24 PM, Rusty Wright wrote:
> There are way too many hidden secrets, like this parent-pk query, that are
> buried throughou
Can you post a subset of your code? It'd be great for the community to take
a look at what you are doing and see if there's anything that jumps out at
us.
On Sat, Nov 21, 2009 at 11:46 PM, Jeffrey Goetsch wrote:
> I have been having a lot of trouble with JDO objects not storing, or at
> least not
Both JDO and JPA support are built on top of the low-level API:
http://code.google.com/appengine/docs/java/datastore/overview.html
Anecdotally, I see more articles about JDO on App Engine, but my experience
has been that there are more *general* JPA articles lying around, though
they may not be a
Andreas,
HTML files are just static files. The way JSP works is that JSP files are
compiled to servlets under the hood when needing, so when you copy the code,
you are really just copying HTML code.
There are two things you should check here:
1. Browser cache. You may be caching the page.
2. Run
Does anyone have a archetype project for GAE, whith the JSF Working ?
I could not do this think work.
Thanks
2009/11/20 addy.bhardwaj
> I had a similar issue. The way I fixed it was to configure state
> saving to client rather than server. For details check my blog
>
> http://consultingblogs
I'm also interested to hear on this from more experienced GAE
developers. My understanding so far is that you can only reliably
maintain state by persisting data to the data store on every request.
You can put objects into the memory cache, but since that's volatie,
i.e. can be blown away at any t
hi all,
I need some help with images in appengine using java. Now I have
sucessfully uploaded an image file and stored it to the datastore. I
am also able to read back the stored image (as a byte[] array). Now
the issue is, how do I display this image in my jsp page?
*
I had a similar issue. The way I fixed it was to configure state
saving to client rather than server. For details check my blog
http://consultingblogs.emc.com/jaddy/archive/2009/11/20/jsf2-in-google-app-engine.aspx
Let me know if this fixes your problem.
On Nov 12, 6:15 pm, Mirco Attocchi wrote:
Jason,
Are you still able to process it within 24 hours. I send a post 2 days
ago.
Marco
On Sep 29, 7:55 am, "Jason (Google)" wrote:
> Due to the recent uptick in spam messages, I have enabled moderation
> for new members -- this means that if you haven't posted here before,
> your message may
Was there any progress on this bug?
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Hi,
What's the deal with all these restricted classes?
http://groups.google.com/group/google-appengine-java/search?group=google-appengine-java&q=restricted+class&qt_g=Search+this+group
And can someone explain why we can't simply use a straightforward,
simple, one-of-many-such Java Servlet impleme
Hi,
VRaptor3 (http://vraptor.caelum.com.br/en) also works on GAE, with few
customizations that can be properly downloaded on google code:
http://code.google.com/p/vraptor3/downloads/list (Blank project for
google app engine).
Add VRaptor 3 to this page, please.
Thanks,
Lucas
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Hi Andrey,
I don't know the exact answer, but I am just curious
whether this is feasible or easy to do, using a third party library,
because we have to make sure that all the classes that the third party
lib uses are on the white list of Google, also we how is the
authentication user in
Hi,
I have some questions regarding the limits of server code in GAE. Can
I write server code that isn't tied to an http request - i.e. a thread
that would always be running on the server and which servlets could
communicate with? From what I've read it isn't possible but I just
wanted to confir
Did you solve this problem? I am facing exactly same problem, it would
be nice if you could share the solution if you found one.
Thank you
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Hi Ikai,
I tried your example code, but I cannot attach an image on the email
that I send.
There is no conversion error either.
Here is snippets of the code, please help..
//Retrieving image:
URL url = new URL("http://stockcharts.com/c-sc/sc?s="; + ticker +
"&p=DAILY&b=5&g=0&i=0&r=3528");
//
Hi,
VRaptor3 (http://vraptor.caelum.com.br/en) also works on GAE, with few
customizations that can be properly downloaded on google code:
http://code.google.com/p/vraptor3/downloads/list (Blank project for
google app engine).
Add VRaptor 3 to this page, please.
Thanks,
Lucas
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I'm also experiencing Gabriel's topmost stacktrace while attempting to
POC Drools. Like Kris, I cannot see far enough into the stacktrace to
determine what drools API call is triggering the behavior. My app is
heroict...@appspot.com.
On Nov 4, 3:43 am, Kris wrote:
> Hi Toby,
>
> I've just reali
Thanks! I searched a lot but didn't get to this thread.
On Nov 23, 4:13 pm, leszek wrote:
> Follow that thread:
>
> http://groups.google.co.uk/group/google-appengine-java/browse_frm/thr...
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To answer my own question, this has been my best shot this far:
SecurityManager sm = System.getSecurityManager();
localDevelopmentEnvironment = sm == null ||
"com.google.appengine.tools.development.DevAppServerFactory
$CustomSecurityManager".equals(sm.getClass().getName());
If anyone has a better
Hi all,
I was considering options, but I first wanted to ask: is there a
recommended way to differentiate between my local development
environment and the real GAE server? This far, the only options I can
think of are:
* adding a -Dtest=true to my eclipse launcher
* looking up for any test envir
On 11月3日, 上午3时17分, Jason Parekh wrote:
> Hey DDawster,
>
> It looks like the Eclipse version included with Ubuntu 9.10 is Eclipse 3.5.
> You will need to use the 3.5 update site, which
> ishttp://dl.google.com/eclipse/plugin/3.5.
>
> jasonOn Sun, Nov 1, 2009 at 11:39 AM, ddawster zhang
> wro
This is the object:
___
@PersistenceCapable(identityType = IdentityType.APPLICATION,
detachable = "true")
public class Client implements java.io.Serializable {
@Persistent
private ArrayList serviceRecords;
@Persistent
private ArrayList servic
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