CacheManager.java 文件源码

public Path create() {
    try {
        if (Files.exists(path)) {
            List<String> otherKeys;
            try (Stream<String> stream = Files.lines(getMetadataFile(), StandardCharsets.UTF_8)) {
                otherKeys = stream.collect(Collectors.toList());
            }
            if (!keys.equals(otherKeys)) {
                throw new PowsyblException("Inconsistent cache hash code");
            }
        } else {
            Files.createDirectories(path);
            try (BufferedWriter writer = Files.newBufferedWriter(getMetadataFile(), StandardCharsets.UTF_8)) {
                for (String key : keys) {
                    writer.write(key);
                    writer.newLine();
                }
            }
        }
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
    return path;
}