public EqualsBuilder reflectionAppend()

in src/main/java/org/apache/commons/lang3/builder/EqualsBuilder.java [480:540]
47 lines of code
16 McCabe index (conditional complexity)

    public EqualsBuilder reflectionAppend(final Object lhs, final Object rhs) {
        if (!isEquals) {
            return this;
        }
        if (lhs == rhs) {
            return this;
        }
        if (lhs == null || rhs == null) {
            isEquals = false;
            return this;
        }

        // Find the leaf class since there may be transients in the leaf
        // class or in classes between the leaf and root.
        // If we are not testing transients or a subclass has no ivars,
        // then a subclass can test equals to a superclass.
        final Class<?> lhsClass = lhs.getClass();
        final Class<?> rhsClass = rhs.getClass();
        Class<?> testClass;
        if (lhsClass.isInstance(rhs)) {
            testClass = lhsClass;
            if (!rhsClass.isInstance(lhs)) {
                // rhsClass is a subclass of lhsClass
                testClass = rhsClass;
            }
        } else if (rhsClass.isInstance(lhs)) {
            testClass = rhsClass;
            if (!lhsClass.isInstance(rhs)) {
                // lhsClass is a subclass of rhsClass
                testClass = lhsClass;
            }
        } else {
            // The two classes are not related.
            isEquals = false;
            return this;
        }

        try {
            if (testClass.isArray()) {
                append(lhs, rhs);
            } else //If either class is being excluded, call normal object equals method on lhsClass.
            if (bypassReflectionClasses != null
                    && (bypassReflectionClasses.contains(lhsClass) || bypassReflectionClasses.contains(rhsClass))) {
                isEquals = lhs.equals(rhs);
            } else {
                reflectionAppend(lhs, rhs, testClass);
                while (testClass.getSuperclass() != null && testClass != reflectUpToClass) {
                    testClass = testClass.getSuperclass();
                    reflectionAppend(lhs, rhs, testClass);
                }
            }
        } catch (final IllegalArgumentException e) {
            // In this case, we tried to test a subclass vs. a superclass and
            // the subclass has ivars or the ivars are transient and
            // we are testing transients.
            // If a subclass has ivars that we are trying to test them, we get an
            // exception and we know that the objects are not equal.
            isEquals = false;
        }
        return this;
    }