I'm doing build-time enhancement. Send your persistence.xml El 19/11/2012 09:50, "Chris Wolf" <cwolf.a...@gmail.com> escribió:
> I choose property access over field access due to the caveats listed > at the bottom of this page: > > > http://openjpa.apache.org/builds/1.0.4/apache-openjpa-1.0.4/docs/manual/ref_guide_pc_enhance.html > > ...not that is matters, really, since my entities *are* enhanced (just > not java.util.ArrayList). > > I would be curious to see your persistence.xml and orm.xml and if you > are doing runtime > enhancement or build-time enhancement.... > > Thanks, > > -Chris > > On Mon, Nov 19, 2012 at 10:37 AM, Boblitz John > <john.bobl...@bertschi.com> wrote: > > 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* > >> >>> >> >> > > >> >>> > >> ------------------------------------------------------------------- > >> >>> >> >> > >> >>> >> > >> >>> > >> >> > >> >
