Example usage for org.springframework.core.io Resource isFile

Introduction

In this page you can find the example usage for org.springframework.core.io Resource isFile.

Prototype

default boolean isFile() 

Source Link

Document

Determine whether this resource represents a file in a file system.

Usage

From source file:org.springframework.http.codec.ResourceHttpMessageWriter.java

private static Optional<Mono<Void>> zeroCopy(Resource resource, @Nullable ResourceRegion region,
        ReactiveHttpOutputMessage message, Map<String, Object> hints) {

    if (message instanceof ZeroCopyHttpOutputMessage && resource.isFile()) {
        try {/*from   ww w. j a v a2s .co m*/
            File file = resource.getFile();
            long pos = region != null ? region.getPosition() : 0;
            long count = region != null ? region.getCount() : file.length();
            if (logger.isDebugEnabled()) {
                String formatted = region != null ? "region " + pos + "-" + (count) + " of " : "";
                logger.debug(Hints.getLogPrefix(hints) + "Zero-copy " + formatted + "[" + resource + "]");
            }
            return Optional.of(((ZeroCopyHttpOutputMessage) message).writeWith(file, pos, count));
        } catch (IOException ex) {
            // should not happen
        }
    }
    return Optional.empty();
}

---