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*
>> > -------------------------------------------------------------------
>>
