Hi Henno, The JIRA you referenced is still the one for tracking the work... Because of the changes to the class file format with Java 8, we will need a new ASM in order to build and enhance Entities with Java 8. Some of the infrastructure work was put in place to support a new version of ASM, but we haven't moved to it yet. We now have a dependency on the xbean shaded version of ASM from the Geronimo project. And, I just noticed this morning that they are looking to upgrade their version in support of Java 8. Once that work is complete, then hopefully it will be relatively easy to change the OpenJPA enhancement process to take advantage of the new ASM.
The other open switch is the Serp utility with Java 8. We're not sure if the class file format change for Java 8 is going to directly affect Serp or not. We're hoping that the ASM upgrade will alleviate necessary changes to Serp. Not sure of your availability and skills, but any assistance with this activity would be appreciated. I see that ASM 5.0.1 was recently released in support of Java 8 [1]. So, skipping the xbean shading for now, if someone wants to re-package OpenJPA with ASM 5.0.1, we could start to see how big of an effort this will be. Do not attempt to build OpenJPA with Java 8. Stick with Java 7 for building. At this point, we are only interested in allowing applications to be built with Java 8. Good luck! Thanks, Kevin [1] http://forge.ow2.org/projects/asm/ On Wed, Mar 26, 2014 at 9:59 AM, Henno Vermeulen <he...@huizemolenaar.nl>wrote: > Yesterday Java 8 was officially released. When I try to compile and run my > tests and application that use OpenJPA 2.3.0 with Java 8 I get errors (see > below) when I try to enhance the entities or use the java agent. > Are there plans to support Java 8 in the near future? > > I did find the following issue which was unfortunately last updated almost > half a year ago: https://issues.apache.org/jira/browse/OPENJPA-2386 > > Regards, > Henno Vermeulen > > Java agent: > > 431 olgaPersistenceUnit WARN [main] openjpa.Enhance - An exception was > thrown while attempting to perform class file transformation on > "nl/hm/olga/core/entity/AbstractEntity":java.lang.IllegalArgumentException > at org.apache.xbean.asm4.ClassReader.<init>(Unknown Source) > at org.apache.xbean.asm4.ClassReader.<init>(Unknown Source) > at org.apache.xbean.asm4.ClassReader.<init>(Unknown Source) > at > org.apache.openjpa.enhance.AsmAdaptor.toJava7ByteArray(AsmAdaptor.java:93) > at > org.apache.openjpa.enhance.AsmAdaptor.toByteArray(AsmAdaptor.java:78) > at > org.apache.openjpa.enhance.PCClassFileTransformer.transform0(PCClassFileTransformer.java:156) > at > org.apache.openjpa.enhance.PCClassFileTransformer.transform(PCClassFileTransformer.java:126) > at > sun.instrument.TransformerManager.transform(TransformerManager.java:188) > at > sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:428) > at java.lang.ClassLoader.defineClass1(Native Method) > at java.lang.ClassLoader.defineClass(ClassLoader.java:760) > at > java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) > at > java.net.URLClassLoader.defineClass(URLClassLoader.java:455) > at > java.net.URLClassLoader.access$100(URLClassLoader.java:73) > at java.net.URLClassLoader$1.run(URLClassLoader.java:367) > at java.net.URLClassLoader$1.run(URLClassLoader.java:361) > at java.security.AccessController.doPrivileged(Native > Method) > at > java.net.URLClassLoader.findClass(URLClassLoader.java:360) > at java.lang.ClassLoader.loadClass(ClassLoader.java:424) > at > sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) > at java.lang.ClassLoader.loadClass(ClassLoader.java:357) > at java.lang.ClassLoader.defineClass1(Native Method) > at java.lang.ClassLoader.defineClass(ClassLoader.java:760) > at > java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) > at > java.net.URLClassLoader.defineClass(URLClassLoader.java:455) > at > java.net.URLClassLoader.access$100(URLClassLoader.java:73) > at java.net.URLClassLoader$1.run(URLClassLoader.java:367) > at java.net.URLClassLoader$1.run(URLClassLoader.java:361) > at java.security.AccessController.doPrivileged(Native > Method) > at > java.net.URLClassLoader.findClass(URLClassLoader.java:360) > at java.lang.ClassLoader.loadClass(ClassLoader.java:424) > at > sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) > at java.lang.ClassLoader.loadClass(ClassLoader.java:357) > at > nl.hm.oblomow.application.server.OblomowServerStarter.main(OblomowServerStarter.java:32) > > Enhancer (through Maven plugin) > .... > Caused by: java.lang.ArrayIndexOutOfBoundsException: 8 > at > serp.bytecode.lowlevel.ConstantPoolTable.readByte(ConstantPoolTable.java:81) > at > serp.bytecode.lowlevel.ConstantPoolTable.readUnsignedShort(ConstantPoolTable.java:88) > at > serp.bytecode.lowlevel.ConstantPoolTable.<init>(ConstantPoolTable.java:22) > at > serp.bytecode.lowlevel.ConstantPoolTable.<init>(ConstantPoolTable.java:30) > at > org.apache.openjpa.lib.meta.ClassArgParser.getFromClass(ClassArgParser.java:324) > at > org.apache.openjpa.lib.meta.ClassArgParser.getFromClassFile(ClassArgParser.java:308) > at > org.apache.openjpa.lib.meta.ClassArgParser.parseTypeNames(ClassArgParser.java:217) > ... 30 more >
