org.apache.openjpa.enhance
Class ClassRedefiner
java.lang.Object
org.apache.openjpa.enhance.ClassRedefiner
public class ClassRedefiner
- extends Object
Redefines the method bodies of existing classes. Supports Java 5 VMs that
have a javaagent installed on the command line as well as newer VMs without
any javaagent flag.
- Since:
- 1.0.0
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ClassRedefiner
public ClassRedefiner()
redefineClasses
public static void redefineClasses(OpenJPAConfiguration conf,
Map<Class,byte[]> classes)
- For each element in
classes
, this method will redefine
all the element's methods such that field accesses are intercepted
in-line. If canRedefineClasses()
returns false
,
this method is a no-op.
canRedefineClasses
public static boolean canRedefineClasses()
- Returns:
- whether or not this VM has an instrumentation installed that
permits redefinition of classes. This assumes that all the arguments
will be modifiable classes according to
java.lang.instrument.Instrumentation#isModifiableClass
, and
only checks whether or not an instrumentation is available and
if retransformation is possible.
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