I copy and paste your 2 clases, and add to my project, then i add in
persistence.xml and finally i run the enhancement and works:
[openjpa:enhance]
108 kx_mailing INFO [main] openjpa.Tool - Enhancer running on type
"mytest.RiskFactor".
496 kx_mailing INFO [main] openjpa.Tool - Enhancer running on type
"mytest.MarketData".
Dont forget to add them in your persistence.xml
<class>mytest.RiskFactor</class>
<class>mytest.MarketData</class>
2012/11/19 Boblitz John <john.bobl...@bertschi.com>
> Actually, mine works just fine!
>
> I choose to annotate the attributes instead of the methodes, but here is
> an example:
>
> @Entity
> @Table(name = "UserGroup")
> public class UserGroup extends BaseEntity {
>
> [snip]
>
> @ManyToMany(mappedBy = "userGroups")
> private Set<Users> users;
>
> }
>
> @Entity
> @Table(name = "Users")
> public class Users extends BaseEntity {
>
> [snip]
>
> @ManyToMany
> @JoinTable(name = "UserGroupMember", joinColumns =
> @JoinColumn(name = "userid"), inverseJoinColumns = @JoinColumn(name =
> "groupid"))
> private Set<UserGroup> userGroups;
>
> }
>
>
>
>
> > -----Ursprüngliche Nachricht-----
> > Von: Chris Wolf [mailto:cwolf.a...@gmail.com]
> > Gesendet: Montag, 19. November 2012 16:29
> > An: users@openjpa.apache.org
> > Betreff: Re: cannot persist m2m data, getting
> > "ArgumentException: Attempt to cast instance xxx
> > [java.util.HashSet]" to PersistenceCapable failed. Ensure
> > that it has been enhanced."
> >
> > José,
> >
> > The plugin doc says you can have a comma-delimited list of
> > classes, however, since enhancement on collection classes
> > doesn't seem to work anyway - per your suggestion, I removed
> > "java.util.ArrayList" and re-ran the "mvn openjpa:enhance" command.
> >
> > The result, as ever, is still:
> >
> > 771 openjpa INFO [main] openjpa.Enhance - Creating subclass and
> > redefining methods for
> > "[class java.util.ArrayList]". This means that your
> > application will be less efficient than it would if you ran
> > the OpenJPA enhancer.
> > Exception in thread "main" <openjpa-2.2.0-r422266:1244990
> > fatal user error>
> > org.apache.openjpa.persistence.ArgumentException: No
> > registered metadata for type "class java.util.ArrayList".
> > This can happen if this class has not been annotated as a
> > persistent entity or specified in the persistence unit (ex:
> > in the orm.xml).
> >
> > I wonder if anyone knows of a working example of many-to-many
> > ORM using OpenJPA?
> >
> > Thanks,
> >
> > -Chris
> >
> >
> > On Mon, Nov 19, 2012 at 10:19 AM, José Luis Cetina
> > <maxtorz...@gmail.com> wrote:
> > > And I think you don't have to set arraylist class or any
> > java "native"
> > > class as enhance class. Only your entities have to be enhancement.
> > > El 19/11/2012 09:12, "José Luis Cetina"
> > <maxtorz...@gmail.com> escribió:
> > >
> > >> I'm not sure if the include tag accept more than 1 class.
> > >>
> > >> You have:
> > >> <includes>**/entities/*.class,java.util.ArrayList.class</includes>
> > >>
> > >> Try to remove java.util.ArrayList.
> > >> El 19/11/2012 09:05, "Chris Wolf" <cwolf.a...@gmail.com> escribió:
> > >>
> > >>> José,
> > >>>
> > >>> Thanks - I sent the two entities to John (this list).
> > The pom.xml
> > >>> is attached...
> > >>>
> > >>> -Chris
> > >>>
> > >>>
> > >>>
> > >>> On Mon, Nov 19, 2012 at 9:54 AM, José Luis Cetina
> > >>> <maxtorz...@gmail.com>
> > >>> wrote:
> > >>> > Please send your 2 entities and your pom configuration whit the
> > >>> > enhance plugin.
> > >>> > El 19/11/2012 08:46, "Chris Wolf"
> > <cwolf.a...@gmail.com> escribió:
> > >>> >
> > >>> >> José,
> > >>> >>
> > >>> >> I tried List/ArrayList - same error. Thanks....
> > >>> >>
> > >>> >> -Chris
> > >>> >>
> > >>> >> On Sun, Nov 18, 2012 at 9:47 PM, José Luis Cetina <
> > >>> maxtorz...@gmail.com>
> > >>> >> wrote:
> > >>> >> > Of course I'm using 1-M relationships but I use them
> > with List
> > >>> >> > not
> > >>> >> hashset,
> > >>> >> > why you dont give a try to list only for look if the
> > problem is
> > >>> >> > with hashset.
> > >>> >> > El 18/11/2012 19:59, "Chris Wolf"
> > <cwolf.a...@gmail.com> escribió:
> > >>> >> >
> > >>> >> >> José,
> > >>> >> >>
> > >>> >> >> Thanks for your reply. My pom.xml setup is very similar to
> > >>> >> >> yours
> > >>> and
> > >>> >> >> the "enhance" goal runs without error, but, as I mentioned,
> > >>> >> >> I still get the error on "casting
> > java.util.HashSet". Are you able
> > >>> >> >> to persist entities with 1-M or M-M relationships?
> > >>> >> >>
> > >>> >> >> BTW, I changed my code to temporarily change JPA
> > provider from
> > >>> OpenJPA
> > >>> >> >> to the Hibernate JPA provider
> > >>> >> >> and, once again, Hibernate's JPA reports:
> > >>> >> >>
> > >>> >> >> Exception in thread "main"
> > java.lang.IllegalArgumentException:
> > >>> Unknown
> > >>> >> >> entity: java.util.HashSet
> > >>> >> >> at
> > >>> >> >>
> > >>> >>
> > >>>
> > org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityMa
> > >>> nagerImpl.java:671)
> > >>> >> >>
> > >>> >> >> Well, at least both JPA implementations are
> > complaining about
> > >>> >> >> the
> > >>> same
> > >>> >> >> issue - I just wish I knew
> > >>> >> >> what I was doing! I know I can get this to work
> > in an instant by
> > >>> >> >> reverting to Hibernate-only
> > >>> >> >> solution, but I was hoping the byte-code weaving of
> > JPA would
> > >>> >> >> be a performance advantage over Hibernate's
> > reflection/proxy
> > >>> >> >> pattern.
> > >>> >> >>
> > >>> >> >> Thanks again,
> > >>> >> >>
> > >>> >> >> -Chris
> > >>> >> >>
> > >>> >> >> On Sun, Nov 18, 2012 at 1:26 PM, José Luis Cetina <
> > >>> maxtorz...@gmail.com
> > >>> >> >
> > >>> >> >> wrote:
> > >>> >> >> > I have this in my pom.xml for ENHANCMENT and works:
> > >>> >> >> >
> > >>> >> >> > <!--OPENJPA ENHANCMENT-->
> > >>> >> >> > <plugin>
> > >>> >> >> > <groupId>org.apache.openjpa</groupId>
> > >>> >> >> >
> > <artifactId>openjpa-maven-plugin</artifactId>
> > >>> >> >> > <version>2.2.0</version>
> > >>> >> >> > <configuration>
> > >>> >> >> >
> > >>> >> >> > <includes>mypackage/model/*.class</includes>
> > >>> >> >> >
> > >>> >> <addDefaultConstructor>true</addDefaultConstructor>
> > >>> >> >> >
> > >>> >> >> >
> > <enforcePropertyRestrictions>true</enforcePropertyRestrictio
> > >>> >> >> > ns>
> > >>> >> >> >
> > >>> >> >> >
> > <connectionDriverName>com.mysql.jdbc.Driver</connectionDriverName>
> > >>> >> >> > <connectionProperties>
> > >>> >> >> >
> > driverClass=${database.driver.name},
> > >>> >> >> >
> > jdbcUrl=${database.connection.url},
> > >>> >> >> > user=${database.user},
> > >>> >> >> > password=${database.password},
> > >>> >> >> > minPoolSize=5,
> > >>> >> >> > acquireRetryAttempts=3,
> > >>> >> >> > maxPoolSize=20
> > >>> >> >> > </connectionProperties>
> > >>> >> >> > </configuration>
> > >>> >> >> > <executions>
> > >>> >> >> > <execution>
> > >>> >> >> > <id>enhancer</id>
> > >>> >> >> > <phase>process-classes</phase>
> > >>> >> >> > <goals>
> > >>> >> >> > <goal>enhance</goal>
> > >>> >> >> > </goals>
> > >>> >> >> > </execution>
> > >>> >> >> > </executions>
> > >>> >> >> > <dependencies>
> > >>> >> >> > <dependency>
> > >>> >> >> >
> > <groupId>org.apache.openjpa</groupId>
> > >>> >> >> > <artifactId>openjpa</artifactId>
> > >>> >> >> > <version>2.2.0</version>
> > >>> >> >> > </dependency>
> > >>> >> >> > </dependencies>
> > >>> >> >> > </plugin>
> > >>> >> >> >
> > >>> >> >> > In my persistence.xml i have:
> > >>> >> >> >
> > >>> >> >> > <property name="openjpa.ConnectionUserName"
> > >>> >> value="${db.username}"/>
> > >>> >> >> > <property name="openjpa.ConnectionPassword"
> > >>> >> >> value="${db.password}"/>
> > >>> >> >> > <property name="openjpa.ConnectionURL"
> > value="${db.url}"/>
> > >>> >> >> > <property name="openjpa.ConnectionDriverName"
> > >>> >> >> > value="${db.driver.class}"/>
> > >>> >> >> >
> > >>> >> >> > You can replace the database properties in
> > persistence.xml
> > >>> >> >> > with
> > >>> your
> > >>> >> own
> > >>> >> >> > values
> > >>> (${db.username},${db.password},${db.url},${db.driver.class}).
> > >>> >> >> >
> > >>> >> >> >
> > >>> >> >> > I use this configuration for my JEE Projects.
> > >>> >> >> >
> > >>> >> >> > Maybe this can help you.
> > >>> >> >> >
> > >>> >> >> > Regards.
> > >>> >> >> >
> > >>> >> >> > SCJA. JL Cetina
> > >>> >> >> >
> > >>> >> >> >
> > >>> >> >> > 2012/11/18 Chris Wolf <cwolf.a...@gmail.com>
> > >>> >> >> >
> > >>> >> >> >> I wrote a shell script to directly invoke PCEnhancer on
> > >>> >> >> >> class java.util.HashSet, and even that didn't work:
> > >>> >> >> >>
> > >>> >> >> >> $ ./enhance.sh
> > >>> >> >> >> 52 openjpa INFO [main] openjpa.Tool -
> > Enhancer running on
> > >>> type
> > >>> >> >> >> "java.util.HashSet".
> > >>> >> >> >> Exception in thread "main" java.lang.RuntimeException:
> > >>> >> >> >> java.io.FileNotFoundExcep
> > >>> >> >> >> tion:
> > >>> >> >> >> file:\C:\opt\jdk\jre\lib\rt.jar!\java\util\HashSet.class
> > >>> (The
> > >>> >> >> >> filename, directory name, or volume label syntax
> > is incorrect)
> > >>> >> >> >> at
> > >>> >> >> >>
> > >>> >> >>
> > >>> >>
> > >>>
> > org.apache.openjpa.lib.conf.Configurations.launchRunnable(Configurat
> > >>> ions.java:744)
> > >>> >> >> >>
> > >>> >> >> >> On Sun, Nov 18, 2012 at 10:37 AM, Chris Wolf <
> > >>> cwolf.a...@gmail.com>
> > >>> >> >> wrote:
> > >>> >> >> >> > Hello,
> > >>> >> >> >> >
> > >>> >> >> >> > This is my first posting and first attempt to use
> > >>> >> >> >> > OpenJPA. I
> > >>> put
> > >>> >> >> >> > together a quick demo and can persist individual,
> > >>> >> >> >> > unrelated entities. However, when I try to persist
> > >>> >> >> >> > related entities to two tables via a link table, i.e.
> > >>> many-2-many,
> > >>> >> >> >> > it keeps complaining about "casting to
> > >>> >> >> >> > PersistenceCapable", in particular the class
> > "java.util.HashSet".
> > >>> >> >> >> >
> > >>> >> >> >> > First, I am using the Eclipse JPA plugin
> > (called "Dali"
> > >>> >> >> >> > or "EclipseLink"). Of course, I have OpenJPA
> > configured
> > >>> >> >> >> > as my JPA provider, I am in a plain Java SE
> > environment
> > >>> >> >> >> > with LOCAL_RESOURCE via JDBC connection
> > properties in the
> > >>> >> >> >> > persistence.xml. I am using Sun/Oracle 64bit
> > >>> >> >> >> > JDK-1.6 and OpenJPA-2.2.0.
> > >>> >> >> >> >
> > >>> >> >> >> > I am using the Eclipse JPA plugin to generate
> > the entity
> > >>> classes
> > >>> >> from
> > >>> >> >> >> > already-exiting database schema objects, and that code
> > >>> >> >> >> > looks like (just pasting the relationship code),
> > >>> this
> > >>> >> >> >> > action also adds these classes to persistence.xml via
> > >>> >> >> >> > persistence-unit/class elements.
> > >>> >> >> >> >
> > >>> >> >> >> > First M2M entity, "MarketData":
> > >>> >> >> >> >
> > >>> >> >> >> > //bi-directional many-to-many
> > association to RiskFactor
> > >>> >> >> >> > @ManyToMany(mappedBy="marketData")
> > >>> >> >> >> > public Set<RiskFactor> getRiskFactors() {
> > >>> >> >> >> > return this.riskFactors;
> > >>> >> >> >> > }
> > >>> >> >> >> >
> > >>> >> >> >> > Second M2M entity "RiskFactor":
> > >>> >> >> >> >
> > >>> >> >> >> > //bi-directional many-to-many
> > association to MarketData
> > >>> >> >> >> > @ManyToMany
> > >>> >> >> >> > @JoinTable(
> > >>> >> >> >> > name="MARKET_DATA__RISK_FACTOR"
> > >>> >> >> >> > , joinColumns={
> > >>> >> >> >> >
> > >>> >> >> >> > @JoinColumn(name="RISK_FACTOR_ID",
> > >>> >> >> >> nullable=false)
> > >>> >> >> >> > }
> > >>> >> >> >> > , inverseJoinColumns={
> > >>> >> >> >> >
> > >>> >> >> >> > @JoinColumn(name="MARKET_DATA_ID",
> > >>> >> >> >> nullable=false)
> > >>> >> >> >> > }
> > >>> >> >> >> > )
> > >>> >> >> >> > public Set<MarketData> getMarketData() {
> > >>> >> >> >> > return this.marketData;
> > >>> >> >> >> > }
> > >>> >> >> >> >
> > >>> >> >> >> > When I run the code, the log indicates implicit runtime
> > >>> enhacement,
> > >>> >> >> >> > yet it is complaining:
> > >>> >> >> >> >
> > >>> >> >> >> > "[persistdemo.ojpa.entities.RiskFactor@61578aab]
> > >>> >> [java.util.HashSet]"
> > >>> >> >> >> > to PersistenceCapable failed. Ensure that it has been
> > >>> enhanced."
> > >>> >> >> >> >
> > >>> >> >> >> > ...when it says, "Ensure that it has been enhanced." -
> > >>> >> >> >> > which is
> > >>> >> "it"
> > >>> >> >> >> > referring to? The entity "RiskFactor" or the field
> > >>> relationship
> > >>> >> >> >> > field's class, "java.util.HashSet"?
> > >>> >> >> >> >
> > >>> >> >> >> >
> > >>> >> >> >> > 186 openjpa INFO [main] openjpa.Runtime - OpenJPA
> > >>> dynamically
> > >>> >> >> >> > loaded the class enhancer. Any classes that were not
> > >>> >> >> >> > enhanced
> > >>> at
> > >>> >> build
> > >>> >> >> >> > time will be enhanced when they are loaded by the JVM.
> > >>> >> >> >> > SLF4J: Failed to load class
> > >>> "org.slf4j.impl.StaticLoggerBinder".
> > >>> >> >> >> > SLF4J: Defaulting to no-operation (NOP) logger
> > >>> >> >> >> > implementation
> > >>> >> >> >> > SLF4J: See
> > >>> >> >> >> > http://www.slf4j.org/codes.html#StaticLoggerBinderfor
> > >>> >> >> >> > further details.
> > >>> >> >> >> > 243 openjpa INFO [main] openjpa.Runtime - OpenJPA
> > >>> dynamically
> > >>> >> >> >> > loaded a validation provider.
> > >>> >> >> >> > 596 openjpa INFO [main] openjpa.Runtime -
> > Starting OpenJPA
> > >>> >> 2.2.0
> > >>> >> >> >> > 630 openjpa INFO [main] openjpa.jdbc.JDBC - Using
> > >>> dictionary
> > >>> >> class
> > >>> >> >> >> > "org.apache.openjpa.jdbc.sql.OracleDictionary".
> > >>> >> >> >> > Exception in thread "main"
> > <openjpa-2.2.0-r422266:1244990
> > >>> nonfatal
> > >>> >> >> >> > user error>
> > org.apache.openjpa.persistence.ArgumentException:
> > >>> >> Attempt
> > >>> >> >> >> > to cast instance
> > >>> "[persistdemo.ojpa.entities.RiskFactor@61578aab]
> > >>> >> >> >> > [java.util.HashSet]" to PersistenceCapable failed.
> > >>> >> >> >> > Ensure
> > >>> that it
> > >>> >> has
> > >>> >> >> >> > been enhanced.
> > >>> >> >> >> >
> > >>> >> >> >> > Maybe because "java.util.HashSet" was loaded
> > before the
> > >>> >> >> >> > dynamic enhancer could get to it?
> > >>> >> >> >> >
> > >>> >> >> >> > Next, I tried performing build-time enhancement via
> > >>> >> >> >> > Maven, per
> > >>> this
> > >>> >> >> doc:
> > >>> >> >> >> > http://openjpa.apache.org/enhancement-with-maven.html
> > >>> >> >> >> >
> > >>> >> >> >> > When I ran "mvn openjpa:enhance", it finished with
> > >>> >> >> >> > success, but
> > >>> >> none
> > >>> >> >> >> > of the classes in target/classes seemed to have be
> > >>> >> >> >> > changed (last-modified date same as
> > compile-time). and
> > >>> >> >> >> > re-running
> > >>> results
> > >>> >> in
> > >>> >> >> >> > the same error and stack-trace.
> > >>> >> >> >> >
> > >>> >> >> >> > My openjpa:enhance configuration was:
> > >>> >> >> >> > <configuration>
> > >>> >> >> >> >
> > <includes>**/entities/*.class,java.util.HashSet</includes>
> > >>> >> >> >> >
> > <addDefaultConstructor>true</addDefaultConstructor>
> > >>> >> >> >> >
> > >>> >>
> > <enforcePropertyRestrictions>true</enforcePropertyRestrictions>
> > >>> >> >> >> > </configuration>
> > >>> >> >> >> >
> > >>> >> >> >> >
> > >>> >> >> >> > Next, I tried invoking with:
> > >>> >> >> >> >
> > >>> >> >> >> >
> > -javaagent:/opt/apache-openjpa-2.2.0/openjpa-all-2.2.0.ja
> > >>> >> >> >> > r
> > >>> >> >> >> >
> > >>> >> >> >> > Same error - same stack trace.
> > >>> >> >> >> >
> > >>> >> >> >> > Then, I tried setting this property:
> > >>> >> >> >> > openjpa.RuntimeUnenhancedClasses=supported
> > >>> >> >> >> >
> > >>> >> >> >> > Same error - same stack trace.
> > >>> >> >> >> >
> > >>> >> >> >> >
> > >>> >> >> >> > Then, following a suggestion I found here:
> > >>> >> >> >> >
> > >>> >> >> >>
> > >>> >> >>
> > >>> >>
> > >>>
> > http://openjpa.208410.n2.nabble.com/JPA-adding-entities-to-EntityMan
> > >>> agerFactory-programmatically-td210697.html
> > >>> >> >> >> >
> > >>> >> >> >> > I tried setting both:
> > >>> >> >> >> > openjpa.RuntimeUnenhancedClasses=supported
> > >>> >> >> >> > openjpa.MetaDataFactory=jpa(Types=java.util.HashSet)
> > >>> >> >> >> >
> > >>> >> >> >> > BTW, this is a dead link
> > >>> >> >> >> > "User's Guide on Enhancement" /
> > >>> >> >> >> >
> > >>> >> >> >>
> > >>> >> >>
> > >>> >>
> > >>>
> > http://openjpa.apache.org/builds/latest/docs/manual/manual.html#ref_
> > >>> guide_pc_enhance
> > >>> >> >> >> > (from page:
> > >>> >> >> >> > http://openjpa.apache.org/entity-enhancement.html)
> > >>> >> >> >> >
> > >>> >> >> >> > So is there any way to use OpenJPA to persist objects
> > >>> >> >> >> > related
> > >>> via a
> > >>> >> >> >> > link table? (there obviously must be, but
> > it's a total
> > >>> >> >> >> > mystery to me) I can't believe it's this
> > >>> >> difficult,
> > >>> >> >> >> > I must be doing something really dumb.
> > >>> >> >> >> >
> > >>> >> >> >> > Regards,
> > >>> >> >> >> >
> > >>> >> >> >> > CW
> > >>> >> >> >>
> > >>> >> >> >
> > >>> >> >> >
> > >>> >> >> >
> > >>> >> >> > --
> > >>> >> >> >
> > >>>
> > -------------------------------------------------------------------
> > >>> >> >> > *SCJA. José Luis Cetina*
> > >>> >> >> >
> > >>>
> > -------------------------------------------------------------------
> > >>> >> >>
> > >>> >>
> > >>>
> > >>
> >
>
--
-------------------------------------------------------------------
*SCJA. José Luis Cetina*
-------------------------------------------------------------------
