public static Class getHelperAdapter(Rule rule, Class helperClass, boolean compileToBytecode)
throws CompileException {
Class adapterClass;
// ok we have to create the adapter class
// n.b. we don't bother synchronizing here -- if another rule is racing to create an adapter
// in parallel we don't really care about generating two of them -- we can use whichever
// one gets installed last
try {
String helperName = Type.getInternalName(helperClass);
String compiledHelperName;
// we put the helper in the
if (compileToBytecode) {
compiledHelperName = helperName + "_HelperAdapter_Compiled_" + nextId();
} else {
compiledHelperName = helperName + "_HelperAdapter_Interpreted_" + nextId();
}
byte[] classBytes =
compileBytes(rule, helperClass, helperName, compiledHelperName, compileToBytecode);
String externalName = compiledHelperName.replace('/', '.');
// dump the compiled class bytes if required
Transformer.maybeDumpClass(externalName, classBytes);
// ensure the class is loaded
// think we need to load the generated helper using the class loader of the trigger class
ClassLoader loader = rule.getLoader();
adapterClass = loadHelperAdapter(loader, externalName, classBytes);
} catch (CompileException ce) {
throw ce;
} catch (Throwable th) {
if (compileToBytecode) {
throw new CompileException(
"Compiler.createHelperAdapter : exception creating compiled helper adapter for "
+ helperClass.getName(),
th);
} else {
throw new CompileException(
"Compiler.createHelperAdapter : exception creating interpreted helper adapter for "
+ helperClass.getName(),
th);
}
}
return adapterClass;
}
