private synchronized boolean mkdirs()

in src/main/java/org/apache/sling/jcr/classloader/internal/ClassLoaderWriterImpl.java [317:371]
38 lines of code
11 McCabe index (conditional complexity)

    private synchronized boolean mkdirs(final Session session, final String path) {
        try {
            // quick test
            if (session.itemExists(path) && session.getItem(path).isNode()) {
                return true;
            }

            // check path walking it down
            Node current = session.getRootNode();
            final String[] names = path.split("/");
            for (int i = 0; i < names.length; i++) {
                if (names[i] == null || names[i].length() == 0) {
                    continue;
                } else if (current.hasNode(names[i])) {
                    current = current.getNode(names[i]);
                } else {
                    final Node parentNode = current;
                    try {
                        // adding the node could cause an exception
                        // for example if another thread tries to
                        // create the node "at the same time"
                        current = parentNode.addNode(names[i], NT_FOLDER);
                        session.save();
                    } catch (final RepositoryException re) {
                        // let's first refresh the session
                        // we don't catch an exception here, because if
                        // session refresh fails, we might have a serious problem!
                        session.refresh(false);
                        // let's check if the node is available now
                        if ( parentNode.hasNode(names[i]) ) {
                            current = parentNode.getNode(names[i]);
                        } else {
                            // we try it one more time to create the node - and fail otherwise
                            current = parentNode.addNode(names[i], NT_FOLDER);
                            session.save();
                        }
                    }
                }
            }

            return true;

        } catch (final RepositoryException re) {
            logger.error("Cannot create folder path:" + path, re);
            // discard changes
            try {
                session.refresh(false);
            } catch (final RepositoryException e) {
                // we simply ignore this
            }
        }

        // false in case of error or no need to create
        return false;
    }