Examples with CannotCompileException javassist.CannotCompileException used on opensource projects

Example 21 with CannotCompileException

use of javassist.CannotCompileException in project hibernate-orm by hibernate.

the class PersistentAttributesEnhancer method generateFieldWriter.

protected CtMethod generateFieldWriter(CtClass managedCtClass, CtField persistentField, AttributeTypeDescriptor typeDescriptor) {
    String fieldName = persistentField.getName();
    String readerName = EnhancerConstants.PERSISTENT_FIELD_READER_PREFIX + fieldName;
    String writerName = EnhancerConstants.PERSISTENT_FIELD_WRITER_PREFIX + fieldName;
    CtMethod tmpSuperReader = null;
    CtMethod tmpSuperWriter = null;
    CtMethod writer;
    try {
        boolean declared = persistentField.getDeclaringClass().equals(managedCtClass);
        String declaredWriteFragment = "this." + fieldName + "=" + fieldName + ";";
        String superWriteFragment = "super." + writerName + "(" + fieldName + ");";
        if (!declared) {
            // create a temporary setter on the supper entity to be able to compile our code
            try {
                persistentField.getDeclaringClass().getDeclaredMethod(readerName);
                persistentField.getDeclaringClass().getDeclaredMethod(writerName);
            } catch (NotFoundException nfe) {
                tmpSuperReader = MethodWriter.addGetter(persistentField.getDeclaringClass(), persistentField.getName(), readerName);
                tmpSuperWriter = MethodWriter.addSetter(persistentField.getDeclaringClass(), persistentField.getName(), writerName);
            }
        }
        if (!enhancementContext.hasLazyLoadableAttributes(managedCtClass) || !enhancementContext.isLazyLoadable(persistentField)) {
            writer = MethodWriter.write(managedCtClass, "public void %s(%s %s) {%n  %s%n}", writerName, persistentField.getType().getName(), fieldName, declared ? declaredWriteFragment : superWriteFragment);
        } else {
            writer = MethodWriter.write(managedCtClass, "public void %s(%s %s) {%n%s%n}", writerName, persistentField.getType().getName(), fieldName, typeDescriptor.buildWriteInterceptionBodyFragment(fieldName));
        }
        if (enhancementContext.doDirtyCheckingInline(managedCtClass)) {
            if (enhancementContext.isCompositeClass(managedCtClass)) {
                writer.insertBefore(String.format("  if (%1$s != null) { %1$s.callOwner(\"\"); }%n", EnhancerConstants.TRACKER_COMPOSITE_FIELD_NAME));
            } else {
                writer.insertBefore(typeDescriptor.buildInLineDirtyCheckingBodyFragment(enhancementContext, persistentField));
            }
            handleCompositeField(managedCtClass, persistentField, writer);
        }
        if (enhancementContext.doBiDirectionalAssociationManagement(persistentField)) {
            handleBiDirectionalAssociation(managedCtClass, persistentField, writer);
        }
        if (tmpSuperReader != null) {
            persistentField.getDeclaringClass().removeMethod(tmpSuperReader);
        }
        if (tmpSuperWriter != null) {
            persistentField.getDeclaringClass().removeMethod(tmpSuperWriter);
        }
        return writer;
    } catch (CannotCompileException cce) {
        final String msg = String.format("Could not enhance entity class [%s] to add field writer method [%s]", managedCtClass.getName(), writerName);
        throw new EnhancementException(msg, cce);
    } catch (NotFoundException nfe) {
        final String msg = String.format("Could not enhance entity class [%s] to add field writer method [%s]", managedCtClass.getName(), writerName);
        throw new EnhancementException(msg, nfe);
    }
}

Example 22 with CannotCompileException

use of javassist.CannotCompileException in project afterburner by stephanenicolas.

the class AfterBurner method addOrInsertMethod.

/**
     * Add/Inserts java instructions into a given method of a given class.
     * @param insertableMethod contains all information to perform byte code injection.
     * @throws CannotCompileException if the source contained in insertableMethod can't be compiled.
     * @throws AfterBurnerImpossibleException if something else goes wrong, wraps other exceptions.
     */
public void addOrInsertMethod(InsertableMethod insertableMethod) throws CannotCompileException, AfterBurnerImpossibleException {
    log.info("InsertableMethod : " + insertableMethod);
    // create or complete onViewCreated
    String targetMethodName = insertableMethod.getTargetMethodName();
    CtClass classToTransform = insertableMethod.getClassToInsertInto();
    CtMethod targetMethod = extractExistingMethod(classToTransform, targetMethodName);
    log.info("Method : " + targetMethod);
    if (targetMethod != null) {
        InsertableMethodInjectorEditor injectorEditor = new InsertableMethodInjectorEditor(classToTransform, insertableMethod);
        targetMethod.instrument(injectorEditor);
        if (!injectorEditor.isSuccessful) {
            throw new CannotCompileException("Transformation failed. Insertion method not found.: " + targetMethodName);
        }
    } else {
        classToTransform.addMethod(CtNewMethod.make(insertableMethod.getFullMethod(), classToTransform));
    }
}

Example 23 with CannotCompileException

use of javassist.CannotCompileException in project pinpoint by naver.

the class JavassistClass method addDelegatorMethod.

@Override
public InstrumentMethod addDelegatorMethod(String methodName, String... paramTypes) throws InstrumentException {
    if (getCtMethod0(ctClass, methodName, paramTypes) != null) {
        throw new InstrumentException(getName() + "already have method(" + methodName + ").");
    }
    try {
        final CtClass superClass = ctClass.getSuperclass();
        CtMethod superMethod = getCtMethod0(superClass, methodName, paramTypes);
        if (superMethod == null) {
            throw new NotFoundInstrumentException(methodName + Arrays.toString(paramTypes) + " is not found in " + superClass.getName());
        }
        CtMethod delegatorMethod = CtNewMethod.delegator(superMethod, ctClass);
        ctClass.addMethod(delegatorMethod);
        return new JavassistMethod(objectBinderFactory, pluginContext, interceptorRegistryBinder, apiMetaDataService, this, delegatorMethod);
    } catch (NotFoundException ex) {
        throw new InstrumentException(getName() + "don't have super class(" + getSuperClass() + "). Cause:" + ex.getMessage(), ex);
    } catch (CannotCompileException ex) {
        throw new InstrumentException(methodName + " addDelegatorMethod fail. Cause:" + ex.getMessage(), ex);
    }
}

Example 24 with CannotCompileException

use of javassist.CannotCompileException in project pinpoint by naver.

the class JavassistMethod method addInterceptor0.

private int addInterceptor0(String interceptorClassName, Object[] constructorArgs, InterceptorScope scope, ExecutionPolicy executionPolicy) throws InstrumentException {
    try {
        ScopeInfo scopeInfo = resolveScopeInfo(interceptorClassName, scope, executionPolicy);
        Interceptor interceptor = createInterceptor(interceptorClassName, scopeInfo, constructorArgs);
        int interceptorId = interceptorRegistryBinder.getInterceptorRegistryAdaptor().addInterceptor(interceptor);
        addInterceptor0(interceptor, interceptorId);
        return interceptorId;
    } catch (CannotCompileException ccex) {
        throw new InstrumentException("Failed to add interceptor " + interceptorClassName + " to " + behavior.getLongName(), ccex);
    } catch (NotFoundException nex) {
        throw new InstrumentException("Failed to add interceptor " + interceptorClassName + " to " + behavior.getLongName(), nex);
    }
}

Example 25 with CannotCompileException

use of javassist.CannotCompileException in project pinpoint by naver.

the class JavassistMethod method insertCatch.

private void insertCatch(int from, String src, CtClass exceptionType, String exceptionName) throws CannotCompileException {
    CtClass cc = behavior.getDeclaringClass();
    ConstPool cp = behavior.getMethodInfo().getConstPool();
    CodeAttribute ca = behavior.getMethodInfo().getCodeAttribute();
    CodeIterator iterator = ca.iterator();
    Bytecode b = new Bytecode(cp, ca.getMaxStack(), ca.getMaxLocals());
    b.setStackDepth(1);
    Javac jv = new Javac(b, cc);
    try {
        jv.recordParams(behavior.getParameterTypes(), Modifier.isStatic(getModifiers()));
        jv.recordLocalVariables(ca, from);
        int var = jv.recordVariable(exceptionType, exceptionName);
        b.addAstore(var);
        jv.compileStmnt(src);
        int stack = b.getMaxStack();
        int locals = b.getMaxLocals();
        if (stack > ca.getMaxStack())
            ca.setMaxStack(stack);
        if (locals > ca.getMaxLocals())
            ca.setMaxLocals(locals);
        int len = iterator.getCodeLength();
        int pos = iterator.append(b.get());
        ca.getExceptionTable().add(from, len, len, cp.addClassInfo(exceptionType));
        iterator.append(b.getExceptionTable(), pos);
        behavior.getMethodInfo().rebuildStackMapIf6(cc.getClassPool(), cc.getClassFile2());
    } catch (NotFoundException e) {
        throw new CannotCompileException(e);
    } catch (CompileError e) {
        throw new CannotCompileException(e);
    } catch (BadBytecode e) {
        throw new CannotCompileException(e);
    }
}