Re: [appengine-java] Problem with persistence
I can understand why this might seem to work.
The problem I see is that unTomeo was detached from the database and either
needs to be reattached or refetched before adding unEquipo to it.
Here is some documentation that may help explain.
http://www.jpox.org/docs/1_1/attach_detach.html
try this
tx.begin();
pm.makePersistent(unTorneo);
unTorneo.agregarEquipo(unEquipo);
tx.commit();
On Fri, Oct 29, 2010 at 6:22 PM, lisandrodc lisandr...@gmail.com wrote:
Hi ! I have a problem with persist a class. The problem is that
sometimes, persist and sometimes not persist the class Equipo . I
have a persist class Torneo that has to many class Equipo, and
when persist Equipo sometimes persist in the datastore and sometimes
not persist.
I have to try restarting the application in order that sometimes it
work. Someone will be able to help me?
The code to persist:
public void agregarEquipoConTorneo(Torneo unTorneo, Equipo unEquipo)
{
/*add Equipo with a existing Torneo in the datastore, the
unTorneo(param) class obtain with: Torneo b =
pm.getObjectById(model.Torneo.class, idTorneo);*/
Transaction tx = pm.currentTransaction();
try {
tx.begin();
unTorneo.agregarEquipo(unEquipo);
//pm.makePersistent(unEquipo);
pm.makePersistentAll(unTorneo);
tx.commit();
System.out.println(persistioTorneoConEquipo);
} finally {
pm.close();
if (tx.isActive()) {
tx.rollback();
}
}
}
Regards
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[appengine-java] Re: Simple cron job causes This request caused a new process to be started for your application
Hi,
You're not doing anything wrong: just that after long inactivity, your
app gets unloaded from app engine, when it restarts (here because of
cron), it needs to reload classes and al. Hence the message.
This happens fairly often when the application doesn't have much
trafic.
regards
didier
On Oct 30, 7:10 am, Richard Berger richardlan...@gmail.com wrote:
Just testing to see if I can get a basic cron job working. Set up the
cron.xml, create a servlet, modify web.xml, deploy. And every two
minutes it runs and correctly prints the message I am logging:
W10-29 09:44PM 30.390
com.rb.commit1.DailyNotificationServlet doGet: This is our cron test
But (a) CPU usage is high (1400ms) and that is because my app code is
being loaded over and over as shown by the message that I also get
every two minutes:
I10-29 09:44PM 30.413
This request caused a new process to be started for your application,
and thus caused your application code to be loaded for the first time.
This request may thus take longer and use more CPU than a typical
request for your application.
My servlet code seems as simple as possible:
public class DailyNotificationServlet extends HttpServlet {
private static Logger logger =
Logger.getLogger(DailyNotificationServlet.class.getName());
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
logger.warning(This is our cron test);
}
}
Any idea of what I might be doing wrong?
Thanks so much,
RB
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[appengine-java] Re: Change namespace on existing entities
Hi,
Question from side: do Payment Invoice belong to the same entity
group as Party ? I ask this because of the transactional implications
it will have when you modify keys in Payments Invoices.
regards
didier
On Oct 30, 5:04 am, aswath satrasala aswath.satras...@gmail.com
wrote:
Hi,
Further, on this... which leads to how changing of the namespace can be done
using mapreduce.
If I recreate entities, then if the keys are stored as references in other
entities also needs to be recreated.
Ex.
class Party {
@Long id
KeyTenant tenantKey; // partitioning/filtering
String fname
}
I have several other entitities dependent on the Party Key.
class Invoice {
�...@long id
Keyparty partyKey
...}
class Payment {
�...@long id
KeyParty partyKey
}
All invoices/Payments has to be re-created.
So, how can this be done using mapreduce jobs. One option is
- Using mapreduce, all the Party entities are recreated. The originalkey
and the newkey is stored in a different mapping table, something like this
and operates in the empty namespace.
class MigrationMappingKeys {
@Long id;
KeyParty oldKey
KeyParty newKey
}
Then, I run the mapreduce job on the Invoice and Payment, and recreate based
on the above class.
Any other options...?
-Aswath
On Thu, Oct 28, 2010 at 3:25 PM, Didier Durand durand.did...@gmail.comwrote:
Hi,
http://code.google.com/appengine/docs/java/javadoc/com/google/appengi...
says
When a namespace aware class (e.g., Key, Query and MemcacheService)
is constructed, it determines which namespace will be used by calling
get() if it is otherwise unspecified. If get() returns null, the
current namespace is unset and these APIs will use the empty ()
namespace in its place.
So, I would guess that you have to recreate / copy your entities after
having set namespace via NameSpaceManager.set() if you want to move
them into a new namespace
regards
didier
On Oct 28, 11:34 am, aswath satrasala aswath.satras...@gmail.com
wrote:
Hello,
I have an multi-tenant app-id, and I have designed on partitioning the
entities based on url parameters. I am not using the namespace yet.
For example,
Tenant {
@Id name+email;
}
class Party {
@Long id
KeyTenant tenantKey; // partitioning/filtering
String fname
}
Now, I am planning to use the NamespaceManager for the Party entities. I
want to use the mapreduce and apply the namespace on the existing Party
entities.
Can a namespace be changed from empty to certain value on the existing
entity.
-Aswathhttp://vs-accounting.appspot.com
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Re: [appengine-java] Re: Change namespace on existing entities
Good point. They belong to the same entity group. The more complete
Objectify class is shown.
public class Payment implements IsSerializable {
@Id
private Long id;
@Parent KeyParty parentPartyKey;
private String comments;
private double amount;
}
public class Invoice IsSerializable {
@Id Long id;
@Parent KeyParty parentPartyKey;
InvoiceType invoiceType;
Status status;
private double amount;
}
In the application,there are situations, where I update the Payment and
Invoice in a transaction.
So, how can this be done in mapreduce.
-Aswath
On Sat, Oct 30, 2010 at 12:26 PM, Didier Durand durand.did...@gmail.comwrote:
Hi,
Question from side: do Payment Invoice belong to the same entity
group as Party ? I ask this because of the transactional implications
it will have when you modify keys in Payments Invoices.
regards
didier
On Oct 30, 5:04 am, aswath satrasala aswath.satras...@gmail.com
wrote:
Hi,
Further, on this... which leads to how changing of the namespace can be
done
using mapreduce.
If I recreate entities, then if the keys are stored as references in
other
entities also needs to be recreated.
Ex.
class Party {
@Long id
KeyTenant tenantKey; // partitioning/filtering
String fname
}
I have several other entitities dependent on the Party Key.
class Invoice {
@Long id
Keyparty partyKey
...}
class Payment {
@Long id
KeyParty partyKey
}
All invoices/Payments has to be re-created.
So, how can this be done using mapreduce jobs. One option is
- Using mapreduce, all the Party entities are recreated. The originalkey
and the newkey is stored in a different mapping table, something like
this
and operates in the empty namespace.
class MigrationMappingKeys {
@Long id;
KeyParty oldKey
KeyParty newKey
}
Then, I run the mapreduce job on the Invoice and Payment, and recreate
based
on the above class.
Any other options...?
-Aswath
On Thu, Oct 28, 2010 at 3:25 PM, Didier Durand durand.did...@gmail.com
wrote:
Hi,
http://code.google.com/appengine/docs/java/javadoc/com/google/appengi.
..
says
When a namespace aware class (e.g., Key, Query and MemcacheService)
is constructed, it determines which namespace will be used by calling
get() if it is otherwise unspecified. If get() returns null, the
current namespace is unset and these APIs will use the empty ()
namespace in its place.
So, I would guess that you have to recreate / copy your entities after
having set namespace via NameSpaceManager.set() if you want to move
them into a new namespace
regards
didier
On Oct 28, 11:34 am, aswath satrasala aswath.satras...@gmail.com
wrote:
Hello,
I have an multi-tenant app-id, and I have designed on partitioning
the
entities based on url parameters. I am not using the namespace yet.
For example,
Tenant {
@Id name+email;
}
class Party {
@Long id
KeyTenant tenantKey; // partitioning/filtering
String fname
}
Now, I am planning to use the NamespaceManager for the Party
entities. I
want to use the mapreduce and apply the namespace on the existing
Party
entities.
Can a namespace be changed from empty to certain value on the
existing
entity.
-Aswathhttp://vs-accounting.appspot.com
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[appengine-java] Re: Newly deployed app doesn’t se em always reflected on the server.
As mentioned, IF you are changing version number you will need to set latest as default. Check versions page in dashboard. I have seen some slight delays after default is changed for switchover to new version to occur. A minute maybe. Also, on browser, while on your app page, hit Control F5 to force refresh. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Re: Change namespace on existing entities
Hi,
Since they all belong to the same entity group, you have to recreate
also the other entities as well.
I would personally handle that per entity group, i.e launch a task
(for parallelism) per entity group then recreate the parent of the
entity group in the new namespace, then recreate all the other
entities within this group in this new namespace.
regards
didier
On Oct 30, 9:46 am, aswath satrasala aswath.satras...@gmail.com
wrote:
Good point. They belong to the same entity group. The more complete
Objectify class is shown.
public class Payment implements IsSerializable {
@Id
private Long id;
@Parent KeyParty parentPartyKey;
private String comments;
private double amount;
}
public class Invoice IsSerializable {
@Id Long id;
@Parent KeyParty parentPartyKey;
InvoiceType invoiceType;
Status status;
private double amount;
}
In the application,there are situations, where I update the Payment and
Invoice in a transaction.
So, how can this be done in mapreduce.
-Aswath
On Sat, Oct 30, 2010 at 12:26 PM, Didier Durand
durand.did...@gmail.comwrote:
Hi,
Question from side: do Payment Invoice belong to the same entity
group as Party ? I ask this because of the transactional implications
it will have when you modify keys in Payments Invoices.
regards
didier
On Oct 30, 5:04 am, aswath satrasala aswath.satras...@gmail.com
wrote:
Hi,
Further, on this... which leads to how changing of the namespace can be
done
using mapreduce.
If I recreate entities, then if the keys are stored as references in
other
entities also needs to be recreated.
Ex.
class Party {
@Long id
KeyTenant tenantKey; // partitioning/filtering
String fname
}
I have several other entitities dependent on the Party Key.
class Invoice {
�...@long id
Keyparty partyKey
...}
class Payment {
�...@long id
KeyParty partyKey
}
All invoices/Payments has to be re-created.
So, how can this be done using mapreduce jobs. One option is
- Using mapreduce, all the Party entities are recreated. The originalkey
and the newkey is stored in a different mapping table, something like
this
and operates in the empty namespace.
class MigrationMappingKeys {
@Long id;
KeyParty oldKey
KeyParty newKey
}
Then, I run the mapreduce job on the Invoice and Payment, and recreate
based
on the above class.
Any other options...?
-Aswath
On Thu, Oct 28, 2010 at 3:25 PM, Didier Durand durand.did...@gmail.com
wrote:
Hi,
http://code.google.com/appengine/docs/java/javadoc/com/google/appengi.
..
says
When a namespace aware class (e.g., Key, Query and MemcacheService)
is constructed, it determines which namespace will be used by calling
get() if it is otherwise unspecified. If get() returns null, the
current namespace is unset and these APIs will use the empty ()
namespace in its place.
So, I would guess that you have to recreate / copy your entities after
having set namespace via NameSpaceManager.set() if you want to move
them into a new namespace
regards
didier
On Oct 28, 11:34 am, aswath satrasala aswath.satras...@gmail.com
wrote:
Hello,
I have an multi-tenant app-id, and I have designed on partitioning
the
entities based on url parameters. I am not using the namespace yet.
For example,
Tenant {
@Id name+email;
}
class Party {
@Long id
KeyTenant tenantKey; // partitioning/filtering
String fname
}
Now, I am planning to use the NamespaceManager for the Party
entities. I
want to use the mapreduce and apply the namespace on the existing
Party
entities.
Can a namespace be changed from empty to certain value on the
existing
entity.
-Aswathhttp://vs-accounting.appspot.com
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[appengine-java] Re: Newly deployed app doesn’t se em always reflected on the server.
It is not about a change of version and it is not just about hitting F5. On Oct 30, 9:59 am, andrew aute...@gmail.com wrote: As mentioned, IF you are changing version number you will need to set latest as default. Check versions page in dashboard. I have seen some slight delays after default is changed for switchover to new version to occur. A minute maybe. Also, on browser, while on your app page, hit Control F5 to force refresh. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Security and Authentication - security-constraint in web.xml annoying error
Hi i got the following setting in my web.xml:
security-constraint
web-resource-collection
url-pattern/*/url-pattern
/web-resource-collection
auth-constraint
role-name*/role-name
/auth-constraint
/security-constraint
in eclipse it shows me a red X as if it was an error (the project
works fine and even can be deployed) but it asks me all the time if im
sure i want to deploy with the error)
HERE IS THE ERROR:
cvc-complex-type.2.4.a: Invalid content was found starting with
element 'url-pattern'. One of '{http://java.sun.com/xml/ns/
javaee:web-resource-name}' is expected.
And this is how the web.xml begins:
?xml version=1.0 encoding=utf-8?
web-app version=2.5 xmlns=http://java.sun.com/xml/ns/javaee;
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
xsi:schemaLocation=http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd;
how can i fix this annoying error ?
Tx ahead
Daniel
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Re: [appengine-java] Security and Authentication - security-constraint in web.xml annoying error
how can i fix this annoying error ? web-resource-name}' is expected. see the top link in the following search and just add a web-resource-name http://docs.sun.com/app/docs/doc/819-3669/bncbk?a=view Shawn -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Hierarchical Search
Hello Everybody,
I am trying to build an efficient search like I saw in one of the
google IO videos. So the goal is to use the hierarchy of the datastore
to make the search more effecient. The datastore would look something
like this:
Database words
Database words.articlesmap
Database articles
Each article is broken down into a set of words and the article map
just holds the key to the article. The basic path
Find the article i want and get its key.
Use the key to search for all words.articlemap
Get the parent of each articleamp.
At this point I am completely lost. Heres what I have so far but I have
no idea if I am on the right path and second how do I actually do the
search
Word.java
[code]
@PersistenceCapable
public class Word {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key mKey;
@Persistent
String mWord;
@Persistent
ListArticleMap mArticleList;
public Word(String word)
{
mWord = word;
}
public Key GetKey() {
return mKey;
}
public void SetKey(Key key) {
mKey = key;
}
public String GetWord()
{
return mWord;
}
public void AddArticleMap( ArticleMap article )
{
if ( !mArticleList.contains(article) ) {
mArticleList.add(article);
}
}
public void RemoveArticleMap( ArticleMap article )
{
if ( !mArticleList.contains(article) ) {
mArticleList.remove(article);
}
}
}
[/code]
ArticleMap.java
[code]
@PersistenceCapable
public class ArticleMap {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key mKey;
@Persistent
private Key mArticleKey;
public Key GetKey() {
return mKey;
}
public void SetKey(Key key) {
mKey = key;
}
public Key GetArticleKey() {
return mArticleKey;
}
public void SetArticleKey(Key key) {
mArticleKey = key;
}
}
[/code]
Article.java
[code]
@PersistenceCapable
public class Article {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key mKey;
@Persistent
private Text mText;
public Article( Text text ) {
SetText(text);
}
public Key GetKey() {
return mKey;
}
public void SetKey(Key key) {
mKey = key;
}
public void SetText(Text text) {
mText = text;
}
public Text GetText() {
return mText;
}
}
[/code]
How do I tie the article map to the word itself, how do I tie the
article to the article map. How do I search for based on article map
and map that to article.
Thank you for your time
Ben
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