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#StaticLoggerBinder for >> >> > 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* >> > ------------------------------------------------------------------- >>