private boolean fastDelete()

in src/main/java/org/apache/maven/plugins/clean/Cleaner.java [209:256]
42 lines of code
8 McCabe index (conditional complexity)

    private boolean fastDelete(Path baseDir) {
        // Handle the case where we use ${maven.multiModuleProjectDirectory}/target/.clean for example
        if (fastDir.toAbsolutePath().startsWith(baseDir.toAbsolutePath())) {
            try {
                String prefix = baseDir.getFileName().toString() + ".";
                Path tmpDir = Files.createTempDirectory(baseDir.getParent(), prefix);
                try {
                    Files.move(baseDir, tmpDir, StandardCopyOption.REPLACE_EXISTING);
                    if (session != null) {
                        session.getData().set(LAST_DIRECTORY_TO_DELETE, baseDir);
                    }
                    baseDir = tmpDir;
                } catch (IOException e) {
                    Files.delete(tmpDir);
                    throw e;
                }
            } catch (IOException e) {
                logger.debug("Unable to fast delete directory", e);
                return false;
            }
        }
        // Create fastDir and the needed parents if needed
        try {
            if (!Files.isDirectory(fastDir)) {
                Files.createDirectories(fastDir);
            }
        } catch (IOException e) {
            logger.debug(
                    "Unable to fast delete directory as the path " + fastDir
                            + " does not point to a directory or cannot be created",
                    e);
            return false;
        }
        try {
            Path tmpDir = Files.createTempDirectory(fastDir, "");
            Path dstDir = tmpDir.resolve(baseDir.getFileName());
            // Note that by specifying the ATOMIC_MOVE, we expect an exception to be thrown
            // if the path leads to a directory on another mountpoint.  If this is the case
            // or any other exception occurs, an exception will be thrown in which case
            // the method will return false and the usual deletion will be performed.
            Files.move(baseDir, dstDir, StandardCopyOption.ATOMIC_MOVE);
            BackgroundCleaner.delete(this, tmpDir, fastMode);
            return true;
        } catch (IOException e) {
            logger.debug("Unable to fast delete directory", e);
            return false;
        }
    }