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(AbstractEntityManagerImpl.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</enforcePropertyRestrictions>
>>> >> >> >
>>> >> >> > <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(Configurations.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.jar
>>> >> >> >> >
>>> >> >> >> > 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-EntityManagerFactory-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*
>>> >> >> >
>>> -------------------------------------------------------------------
>>> >> >>
>>> >>
>>>
>>
