Re: GWT 1.7 + Eclipse, JPA, Spring configuration
Well, I am using Toplink, not hibernate... I did finally figure out my problem. Since Marco's blog is what helped point me in the right direction, I posted the complete explanation there: http://codetrips.blogspot.com/2009/05/gwt-spring-and-jpa-not-really-friendly.html See the comments to that blog. Thanks, Yaakov. P.S. I would disagree though that my post has nothing to do with GWT. The whole thing started only because of how GWT Eclipse plugin is (is not?) working. As you'll see from my comment to that blog, it's GWT Eclipse plugin that was part of the problem. On Nov 4, 1:16 pm, Davis Ford davisf...@zenoconsulting.biz wrote: This is from the spring page you linked: Not all JPA providers impose the need of a JVM agent (Hibernate being an example). If your provider does not require an agent or you have other alternatives (for example applying enhancements at build time through a custom compiler or an ant task) the load-time weaver *should not* be used. This really is more of a hibernate/spring/maven config issue. Apologies to the list... Are you using JpaTemplate? I have a blog post here that shows how to setup JPA with Hibernate/Spring:http://zenoconsulting.wikidot.com/blog:8-- you might find it helpful. I don't use a load-time weaver. On Wed, Nov 4, 2009 at 10:32 AM, Yaakov yaakov.chai...@gmail.com wrote: to be honest, this sounds like it is not so much a gwt thing as it is a hibernate/spring thing. It IS a GWT thing in the sense that it is the Jetty server which the GWT Eclipse plugin starts up which refuses to recognize that I am starting its JVM with a -javaagent. Why it does that? I don't know... All I want to get to is being able to refresh the hosted browser after I make some change in the GWT code and see it in the hosted browser instantly. i've used hibernate/spring a lot with jpa, and never had to specify a weaver via an extra JVM argument. it seems a bit odd. Well, I didn't make this up, really. Take a look at Spring documentation for 2.5.5: http://static.springsource.org/spring/docs/2.5.x/reference/orm.html#o... ALL 3 options mention weaving. i'm not trying to dodge the question, but typically i solve these issues with google searches. I haven't found anything wrt GWT provided servlet engine, i.e. jetty bundled with GWT. The only link I found, I provided, but that doesn't seem to work anyway. If anyone has any ideas, please suggest. Thanks, Yaakov. -- Zeno Consulting, Inc. home:http://www.zenoconsulting.biz blog:http://zenoconsulting.wikidot.com p: 248.894.4922 f: 313.884.2977 --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en -~--~~~~--~~--~--~---
Re: GWT 1.7 + Eclipse, JPA, Spring configuration
So, when I do provide (as I wrote before) -javaagent:c:\\spring- agent.jar, and I start up GWT hosted environment through Run in eclipse, I get an exception like this: Caused by: java.lang.IllegalStateException: ClassLoader [com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload $WebAppClassLoaderExtension] does NOT provide an 'addTransformer (ClassFileTransformer)' method. Specify a custom LoadTimeWeaver or start your Java virtual machine with Spring's agent: -javaagent:spring- agent.jar Not sure how to get around gwt jetty launcher's inability to accept a load-time weaver. Anyone? Thanks, Yaakov. On Nov 4, 10:32 am, Yaakov yaakov.chai...@gmail.com wrote: to be honest, this sounds like it is not so much a gwt thing as it is a hibernate/spring thing. It IS a GWT thing in the sense that it is the Jetty server which the GWT Eclipse plugin starts up which refuses to recognize that I am starting its JVM with a -javaagent. Why it does that? I don't know... All I want to get to is being able to refresh the hosted browser after I make some change in the GWT code and see it in the hosted browser instantly. i've used hibernate/spring a lot with jpa, and never had to specify a weaver via an extra JVM argument. it seems a bit odd. Well, I didn't make this up, really. Take a look at Spring documentation for 2.5.5:http://static.springsource.org/spring/docs/2.5.x/reference/orm.html#o... ALL 3 options mention weaving. i'm not trying to dodge the question, but typically i solve these issues with google searches. I haven't found anything wrt GWT provided servlet engine, i.e. jetty bundled with GWT. The only link I found, I provided, but that doesn't seem to work anyway. If anyone has any ideas, please suggest. Thanks, Yaakov. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en -~--~~~~--~~--~--~---
Re: GWT 1.7 + Eclipse, JPA, Spring configuration
This is from the spring page you linked: Not all JPA providers impose the need of a JVM agent (Hibernate being an example). If your provider does not require an agent or you have other alternatives (for example applying enhancements at build time through a custom compiler or an ant task) the load-time weaver *should not* be used. This really is more of a hibernate/spring/maven config issue. Apologies to the list... Are you using JpaTemplate? I have a blog post here that shows how to setup JPA with Hibernate/Spring: http://zenoconsulting.wikidot.com/blog:8 -- you might find it helpful. I don't use a load-time weaver. On Wed, Nov 4, 2009 at 10:32 AM, Yaakov yaakov.chai...@gmail.com wrote: to be honest, this sounds like it is not so much a gwt thing as it is a hibernate/spring thing. It IS a GWT thing in the sense that it is the Jetty server which the GWT Eclipse plugin starts up which refuses to recognize that I am starting its JVM with a -javaagent. Why it does that? I don't know... All I want to get to is being able to refresh the hosted browser after I make some change in the GWT code and see it in the hosted browser instantly. i've used hibernate/spring a lot with jpa, and never had to specify a weaver via an extra JVM argument. it seems a bit odd. Well, I didn't make this up, really. Take a look at Spring documentation for 2.5.5: http://static.springsource.org/spring/docs/2.5.x/reference/orm.html#orm-jpa ALL 3 options mention weaving. i'm not trying to dodge the question, but typically i solve these issues with google searches. I haven't found anything wrt GWT provided servlet engine, i.e. jetty bundled with GWT. The only link I found, I provided, but that doesn't seem to work anyway. If anyone has any ideas, please suggest. Thanks, Yaakov. -- Zeno Consulting, Inc. home: http://www.zenoconsulting.biz blog: http://zenoconsulting.wikidot.com p: 248.894.4922 f: 313.884.2977 --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en -~--~~~~--~~--~--~---
Re: GWT 1.7 + Eclipse, JPA, Spring configuration
Thanks for point that out... Now, it does pick up the persistence
unit...
However, I am still not able to start up pre-bundled with Eclipse GWT
Jetty server.
First, it complained that I didn't specify a persistence provider. I
did that by changing my entityManagerFactory to this:
bean id=entityManagerFactory
class=org.springframework.orm.jpa.LocalEntityManagerFactoryBean
property name=persistenceUnitName value=testUnit
property name=jpaDialect
value=org.springframework.orm.jpa.vendor.TopLinkJpaDialect /
property name=jpaVendorAdapter
value=org.springframework.orm.jpa.vendor.TopLinkJpaVendorAdapter /
/bean
After I did this, it started complaining that I Cannot apply class
transformer without LoadTimeWeaver specified.
Well, I tried specifying the load time weaver:
bean id=entityManagerFactory
class=org.springframework.orm.jpa.LocalEntityManagerFactoryBean
property name=loadTimeWeaver
bean
class=org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver
/
/property
property name=persistenceUnitName value=testUnit
property name=jpaDialect
value=org.springframework.orm.jpa.vendor.TopLinkJpaDialect /
property name=jpaVendorAdapter
value=org.springframework.orm.jpa.vendor.TopLinkJpaVendorAdapter /
/bean
When I specify that, it complains that in order to use that particular
weaver, I need to start with a Java agent... From Spring
documentation, that would be spring-agent-2.5.5.jar...
I opened Run Configurations in Eclipse and chose my GWT web app run
configuration. Then, I switched to the Arguments tab and put this in
VM arguments:
-javaagent:c:\spring-agent-2.5.5.jar
This is the exact same configuration (in my spring config and in my
run configuration) that I use to run JPA DAO tests without requiring a
server and it runs just fine within Eclipse and within maven...
However, even after specifying the Java agent the way I just
described, I still get the same error... It's as if GWT Hosted mode
server doesn't see that I am asking it to start with a specific Java
agent (specified in the Arguments-vm arguments in Eclipse)...
Any ideas as to how to get this to work?
Thanks,
Yaakov.
On Nov 3, 3:33 pm, Davis Ford davisf...@zenoconsulting.biz wrote:
don't put persistence.xml in war folder, put it here:
${basedir}/src/main/resources/META-INF/persistence.xml
When you build, maven will make sure it goes in the classes dir of your
webapp (i.e. app.war!/WEB-INF/classes/persistence.xml)
On Tue, Nov 3, 2009 at 3:03 PM, Yaakov Chaikin
yaakov.chai...@gmail.comwrote:
Hi,
I am trying to get hosted mode to work in Eclipse 3.4 with GWT plugin
1.7 on Windows...
Here is what I have:
1) Maven folder structure, as I use maven to compile/deploy the whole
thing.
2) 3 separate modules (eclipse projects): Persistence, Model, and Web
(this is the GWT project).
3) Model has JPA annotated POJOs
4) Persistence has Spring annotated DAOs like this:
@Service
@Transactional
public UserDAOImpl implements UserDAO
{
@PersistenceContext(unitName=testUnit)
private EntityManager manager;
public User getUser(String userName)
{
// some JPA code
}
}
5) The Persistence module has persistence.xml in
src/main/resource/META-INF which looks like this:
standard header stuff...
persistence-unit name=testUnit transaction-type=RESOURCE_LOCAL
classtest.User/class
properties
property name=toplink.jdbc.driver
value=oracle.jdbc.driver.OracleDriver /
property name=toplink.jdbc.url value=oracle URL /
property name=toplink.jdbc.user value=user /
property name=toplink.jdbc.password value=password /
/properties
/persistence-unit
6) In my Web module, I load this Spring configuration:
... standard header stuff
bean id=entityManagerFactory
class=org.springframework.orm.jpa.LocalEntityManagerFactoryBean
property name=persistenceUnitName value=testUnit
/bean
.
there are other things defined here
.
I think it is #6 where things are getting stuck... When I try to start
Eclipse GWT in Hosted mode, the console spits out error creating bean
with name 'entityManagerFactory' defined in class path resource
test-context.xml: Invocation of init method failed; nested exception
is java.lang.IllegalArgumentException: No persistence unit with name
'testUnit' found
I have no idea why this is happening... I already tried to create a
directory under my 'war' directory in the Web module called META-INF
and place the persistence.xml there, but it still says it can't find
the persistence unit with name 'testUnit'...
My maven dependencies bring the following into classpath (besides the
other 2 modules this one depends on and besides the usual gwt ones):
dependency
groupIdjava.persistence/groupId
artifactIdpersistence-api/artifactId
version1.0/version
/dependency
dependency
groupIdoracle/groupId
Re: GWT 1.7 + Eclipse, JPA, Spring configuration
which maven gwt plugin are you using -- is it the codehaus gwt plugin?
to be honest, this sounds like it is not so much a gwt thing as it is a
hibernate/spring thing.
i've used hibernate/spring a lot with jpa, and never had to specify a weaver
via an extra JVM argument. it seems a bit odd. i'm not trying to dodge the
question, but typically i solve these issues with google searches.
something in your project setup is not right -- narrow it down.
On Tue, Nov 3, 2009 at 4:57 PM, Yaakov yaakov.chai...@gmail.com wrote:
Thanks for point that out... Now, it does pick up the persistence
unit...
However, I am still not able to start up pre-bundled with Eclipse GWT
Jetty server.
First, it complained that I didn't specify a persistence provider. I
did that by changing my entityManagerFactory to this:
bean id=entityManagerFactory
class=org.springframework.orm.jpa.LocalEntityManagerFactoryBean
property name=persistenceUnitName value=testUnit
property name=jpaDialect
value=org.springframework.orm.jpa.vendor.TopLinkJpaDialect /
property name=jpaVendorAdapter
value=org.springframework.orm.jpa.vendor.TopLinkJpaVendorAdapter /
/bean
After I did this, it started complaining that I Cannot apply class
transformer without LoadTimeWeaver specified.
Well, I tried specifying the load time weaver:
bean id=entityManagerFactory
class=org.springframework.orm.jpa.LocalEntityManagerFactoryBean
property name=loadTimeWeaver
bean
class=org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver
/
/property
property name=persistenceUnitName value=testUnit
property name=jpaDialect
value=org.springframework.orm.jpa.vendor.TopLinkJpaDialect /
property name=jpaVendorAdapter
value=org.springframework.orm.jpa.vendor.TopLinkJpaVendorAdapter /
/bean
When I specify that, it complains that in order to use that particular
weaver, I need to start with a Java agent... From Spring
documentation, that would be spring-agent-2.5.5.jar...
I opened Run Configurations in Eclipse and chose my GWT web app run
configuration. Then, I switched to the Arguments tab and put this in
VM arguments:
-javaagent:c:\spring-agent-2.5.5.jar
This is the exact same configuration (in my spring config and in my
run configuration) that I use to run JPA DAO tests without requiring a
server and it runs just fine within Eclipse and within maven...
However, even after specifying the Java agent the way I just
described, I still get the same error... It's as if GWT Hosted mode
server doesn't see that I am asking it to start with a specific Java
agent (specified in the Arguments-vm arguments in Eclipse)...
Any ideas as to how to get this to work?
Thanks,
Yaakov.
On Nov 3, 3:33 pm, Davis Ford davisf...@zenoconsulting.biz wrote:
don't put persistence.xml in war folder, put it here:
${basedir}/src/main/resources/META-INF/persistence.xml
When you build, maven will make sure it goes in the classes dir of your
webapp (i.e. app.war!/WEB-INF/classes/persistence.xml)
On Tue, Nov 3, 2009 at 3:03 PM, Yaakov Chaikin yaakov.chai...@gmail.com
wrote:
Hi,
I am trying to get hosted mode to work in Eclipse 3.4 with GWT plugin
1.7 on Windows...
Here is what I have:
1) Maven folder structure, as I use maven to compile/deploy the whole
thing.
2) 3 separate modules (eclipse projects): Persistence, Model, and Web
(this is the GWT project).
3) Model has JPA annotated POJOs
4) Persistence has Spring annotated DAOs like this:
@Service
@Transactional
public UserDAOImpl implements UserDAO
{
@PersistenceContext(unitName=testUnit)
private EntityManager manager;
public User getUser(String userName)
{
// some JPA code
}
}
5) The Persistence module has persistence.xml in
src/main/resource/META-INF which looks like this:
standard header stuff...
persistence-unit name=testUnit transaction-type=RESOURCE_LOCAL
classtest.User/class
properties
property name=toplink.jdbc.driver
value=oracle.jdbc.driver.OracleDriver /
property name=toplink.jdbc.url value=oracle URL /
property name=toplink.jdbc.user value=user /
property name=toplink.jdbc.password value=password /
/properties
/persistence-unit
6) In my Web module, I load this Spring configuration:
... standard header stuff
bean id=entityManagerFactory
class=org.springframework.orm.jpa.LocalEntityManagerFactoryBean
property name=persistenceUnitName value=testUnit
/bean
.
there are other things defined here
.
I think it is #6 where things are getting stuck... When I try to start
Eclipse GWT in Hosted mode, the console spits out error creating bean
with name 'entityManagerFactory' defined in class path resource
test-context.xml: Invocation of init method failed; nested exception
is
GWT 1.7 + Eclipse, JPA, Spring configuration
Hi,
I am trying to get hosted mode to work in Eclipse 3.4 with GWT plugin
1.7 on Windows...
Here is what I have:
1) Maven folder structure, as I use maven to compile/deploy the whole thing.
2) 3 separate modules (eclipse projects): Persistence, Model, and Web
(this is the GWT project).
3) Model has JPA annotated POJOs
4) Persistence has Spring annotated DAOs like this:
@Service
@Transactional
public UserDAOImpl implements UserDAO
{
@PersistenceContext(unitName=testUnit)
private EntityManager manager;
public User getUser(String userName)
{
// some JPA code
}
}
5) The Persistence module has persistence.xml in
src/main/resource/META-INF which looks like this:
standard header stuff...
persistence-unit name=testUnit transaction-type=RESOURCE_LOCAL
classtest.User/class
properties
property name=toplink.jdbc.driver
value=oracle.jdbc.driver.OracleDriver /
property name=toplink.jdbc.url value=oracle URL /
property name=toplink.jdbc.user value=user /
property name=toplink.jdbc.password value=password /
/properties
/persistence-unit
6) In my Web module, I load this Spring configuration:
... standard header stuff
bean id=entityManagerFactory
class=org.springframework.orm.jpa.LocalEntityManagerFactoryBean
property name=persistenceUnitName value=testUnit
/bean
.
there are other things defined here
.
I think it is #6 where things are getting stuck... When I try to start
Eclipse GWT in Hosted mode, the console spits out error creating bean
with name 'entityManagerFactory' defined in class path resource
test-context.xml: Invocation of init method failed; nested exception
is java.lang.IllegalArgumentException: No persistence unit with name
'testUnit' found
I have no idea why this is happening... I already tried to create a
directory under my 'war' directory in the Web module called META-INF
and place the persistence.xml there, but it still says it can't find
the persistence unit with name 'testUnit'...
My maven dependencies bring the following into classpath (besides the
other 2 modules this one depends on and besides the usual gwt ones):
dependency
groupIdjava.persistence/groupId
artifactIdpersistence-api/artifactId
version1.0/version
/dependency
dependency
groupIdoracle/groupId
artifactIdjdbc/artifactId
version1.4/version
/dependency
dependency
groupIdoracle/groupId
artifactIdoracle.toplink.essentials/artifactId
version2.1-b60e-fcs/version
/dependency
dependency
groupIdcommons-dbcp/groupId
artifactIdcommons-dbcp/artifactId
version1.2.2/version
/dependency
Obviously, there is more, but the bottom line is, for some reason, it
refuses to recognize my persistence unit... This is very frustrating
as I can't imagine having to redeploy every time I need to make GUI
update... One of the biggest points of GWT basically is out the
window.
I tried following what this blog pointed out (which is basically what
I've described above, but still have the same issues):
http://codetrips.blogspot.com/2009/05/gwt-spring-and-jpa-not-really-friendly.html
I can't imagine no one has used GWT with Spring and JPA and I am the
first one, so whoever knows the magic solution for this, please help
me out. I'd really appreciate it.
Thanks,
Yaakov.
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