protected void checkMethodSignature()

in modules/aop-ext/src/main/java/org/apache/ignite/compute/gridify/aop/GridifySetToSetAbstractAspect.java [48:99]
41 lines of code
12 McCabe index (conditional complexity)

    protected void checkMethodSignature(Method mtd) throws IgniteCheckedException {
        Class<?>[] paramTypes = mtd.getParameterTypes();

        Collection<Integer> allowedParamIdxs = new LinkedList<>();

        for (int i = 0; i < paramTypes.length; i++) {
            Class<?> paramType = paramTypes[i];

            if (GridifyUtils.isMethodParameterTypeAllowed(paramType))
                allowedParamIdxs.add(i);
        }

        if (allowedParamIdxs.isEmpty()) {
            throw new IgniteCheckedException("Invalid method signature. Failed to get valid method parameter types " +
                "[mtdName=" + mtd.getName() + ", allowedTypes=" + GridifyUtils.getAllowedMethodParameterTypes() + ']');
        }

        List<Integer> annParamIdxs = new LinkedList<>();

        for (int i = 0; i < paramTypes.length; i++) {
            Class<?> paramType = paramTypes[i];

            if (GridifyUtils.isMethodParameterTypeAnnotated(paramType.getDeclaredAnnotations()))
                annParamIdxs.add(i);
        }

        if (annParamIdxs.size() > 1) {
            throw new IgniteCheckedException("Invalid method signature. Only one method parameter can may annotated with @" +
                GridifyInput.class.getSimpleName() +
                "[mtdName=" + mtd.getName() + ", allowedTypes=" + GridifyUtils.getAllowedMethodParameterTypes() +
                ", annParamIdxs=" + annParamIdxs + ']');
        }

        if (allowedParamIdxs.size() > 1 && annParamIdxs.isEmpty()) {
            throw new IgniteCheckedException("Invalid method signature. Method parameter must be annotated with @" +
                GridifyInput.class.getSimpleName() +
                "[mtdName=" + mtd.getName() + ", allowedTypes=" + GridifyUtils.getAllowedMethodParameterTypes() +
                ", allowedParamIdxs=" + allowedParamIdxs + ']');
        }

        if (!annParamIdxs.isEmpty() && !allowedParamIdxs.contains(annParamIdxs.get(0))) {
            throw new IgniteCheckedException("Invalid method signature. Invalid annotated parameter " +
                "[mtdName=" + mtd.getName() + ", allowedTypes=" + GridifyUtils.getAllowedMethodParameterTypes() +
                ", allowedParamIdxs=" + allowedParamIdxs + ", annParamIdxs=" + annParamIdxs + ']');
        }

        if (!GridifyUtils.isMethodReturnTypeValid(mtd.getReturnType())) {
            throw new IgniteCheckedException("Invalid method signature. Invalid method return type " +
                "[mtdName=" + mtd.getName() + ", allowedTypes=" + GridifyUtils.getAllowedMethodReturnTypes() +
                ", mtdReturnType=" + mtd.getReturnType() + ']');
        }
    }