Example usage for java.io File hashCode

Introduction

In this page you can find the example usage for java.io File hashCode.

Prototype

public int hashCode() 

Source Link

Document

Computes a hash code for this abstract pathname.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {

    // create new files
    File f = new File("c:/");

    System.out.print(f.hashCode());

}

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From source file:Main.java

public static String setHashValue(String path) {
    File f = new File(path);
    String result = String.valueOf(f.hashCode());

    return result;
}

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From source file:com.norconex.committer.core.FileAddOperation.java

/**
 * Constructor./*from w  w w  . j av  a2  s.c  om*/
 * @param refFile the reference file to be added
 */
public FileAddOperation(File refFile) {
    super();
    this.hashCode = refFile.hashCode();
    this.refFile = refFile;

    String basePath = StringUtils.removeEnd(refFile.getAbsolutePath(), FileSystemCommitter.EXTENSION_REFERENCE);
    this.contentFile = new File(basePath + FileSystemCommitter.EXTENSION_CONTENT);
    this.metaFile = new File(basePath + FileSystemCommitter.EXTENSION_METADATA);
    try {
        this.reference = FileUtils.readFileToString(refFile, CharEncoding.UTF_8);
    } catch (IOException e) {
        throw new CommitterException("Could not load reference for " + refFile, e);
    }
    this.metadata = new Properties();
    synchronized (metadata) {
        if (metaFile.exists()) {
            FileInputStream is = null;
            try {
                is = new FileInputStream(metaFile);
                metadata.load(is);
            } catch (IOException e) {
                throw new CommitterException("Could not load metadata for " + metaFile, e);
            } finally {
                IOUtils.closeQuietly(is);
            }
        }
    }

}

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From source file:com.ning.maven.plugins.duplicatefinder.DuplicateFinderMojo.java

/**
 * Calculates the SHA256 Hash of a class in a file.
 * //ww  w . ja  v a 2  s  .c o  m
 * @param file the archive contains the class
 * @param resourcePath the name of the class
 * @return the MD% Hash as Hex-Value
 * @throws IOException if any error occurs on reading class in archive
 */
private String getSHA256HexOfElement(final File file, final String resourcePath) throws IOException {
    class Sha256CacheKey {
        final File file;
        final String resourcePath;

        Sha256CacheKey(File file, String resourcePath) {
            this.file = file;
            this.resourcePath = resourcePath;
        }

        public boolean equals(Object o) {
            if (this == o)
                return true;
            if (o == null || getClass() != o.getClass())
                return false;

            Sha256CacheKey key = (Sha256CacheKey) o;

            return file.equals(key.file) && resourcePath.equals(key.resourcePath);
        }

        public int hashCode() {
            return 31 * file.hashCode() + resourcePath.hashCode();
        }
    }

    final Sha256CacheKey key = new Sha256CacheKey(file, resourcePath);
    if (CACHED_SHA256.containsKey(key)) {
        return (String) CACHED_SHA256.get(key);
    }

    ZipFile zip = new ZipFile(file);
    ZipEntry zipEntry = zip.getEntry(resourcePath);
    if (zipEntry == null) {
        throw new IOException("Could not found Zip-Entry for " + resourcePath + " in file " + file);
    }

    String sha256;

    InputStream in = zip.getInputStream(zipEntry);
    try {
        sha256 = DigestUtils.sha256Hex(in);
    } finally {
        IOUtils.closeQuietly(in);
    }

    CACHED_SHA256.put(key, sha256);

    return sha256;
}

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From source file:org.syncany.tests.integration.scenarios.framework.MoveFolderWithinFolder.java

@Override
public void execute() throws Exception {
    File fromFolder = pickFolder(3123);
    File toFolder = new File(fromFolder + "-ren" + fromFolder.hashCode());

    log(this, fromFolder + " -> " + toFolder);
    FileUtils.moveDirectory(fromFolder, toFolder);
}

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From source file:play.modules.netty.PlayHandler.java

private static HttpResponse addEtag(HttpRequest nettyRequest, HttpResponse httpResponse, File file) {
    if (Play.mode == Play.Mode.DEV) {
        httpResponse.setHeader(CACHE_CONTROL, "no-cache");
    } else {/*from  www.ja  va  2 s  .c o m*/
        String maxAge = Play.configuration.getProperty("http.cacheControl", "3600");
        if (maxAge.equals("0")) {
            httpResponse.setHeader(CACHE_CONTROL, "no-cache");
        } else {
            httpResponse.setHeader(CACHE_CONTROL, "max-age=" + maxAge);
        }
    }
    boolean useEtag = Play.configuration.getProperty("http.useETag", "true").equals("true");
    long last = file.lastModified();
    final String etag = "\"" + last + "-" + file.hashCode() + "\"";
    if (!isModified(etag, last, nettyRequest)) {
        if (nettyRequest.getMethod().equals(HttpMethod.GET)) {
            httpResponse.setStatus(HttpResponseStatus.NOT_MODIFIED);
        }
        if (useEtag) {
            httpResponse.setHeader(ETAG, etag);
        }

    } else {
        httpResponse.setHeader(LAST_MODIFIED, Utils.getHttpDateFormatter().format(new Date(last)));
        if (useEtag) {
            httpResponse.setHeader(ETAG, etag);
        }
    }
    return httpResponse;
}

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From source file:swift.application.filesystem.fuse.FilesystemFuse.java

@Override
public int getattr(String path, FuseGetattrSetter getattrSetter) throws FuseException {
    String remotePath = getRemotePath(path);
    File fstub = new File(remotePath);
    log.info("getattr for " + remotePath);
    int time = (int) (System.currentTimeMillis() / 1000L);
    synchronized (this) {
        TxnHandle txn = null;//from   ww w. ja  va 2s.c o  m
        try {
            txn = server.beginTxn(isolationlevel, cachepolicy, true);
            if ("/".equals(path)) {
                DirectoryCRDT root = fs.getDirectory(txn, "/" + ROOT);
                getattrSetter.set(root.hashCode(), FuseFtypeConstants.TYPE_DIR | MODE, 1, 0, 0, 0,
                        root.getValue().size() * NAME_LENGTH,
                        (root.getValue().size() * NAME_LENGTH + BLOCK_SIZE - 1) / BLOCK_SIZE, time, time, time);
            } else if (fs.isDirectory(txn, fstub.getName(), fstub.getParent())) {
                DirectoryCRDT dir = fs.getDirectory(txn, remotePath);
                getattrSetter.set(dir.hashCode(), FuseFtypeConstants.TYPE_DIR | MODE, 1, 0, 0, 0,
                        dir.getValue().size() * NAME_LENGTH,
                        (dir.getValue().size() * NAME_LENGTH + BLOCK_SIZE - 1) / BLOCK_SIZE, time, time, time);
            } else if (fs.isFile(txn, fstub.getName(), fstub.getParent())) {
                IFile f = fs.readFile(txn, fstub.getName(), fstub.getParent());
                getattrSetter.set(fstub.hashCode(), FuseFtypeConstants.TYPE_FILE | MODE, 1, 0, 0, 0,
                        f.getSize(), (f.getSize() + BLOCK_SIZE - 1) / BLOCK_SIZE, time, time, time);
            } else {
                txn.rollback();
                return Errno.ENOENT;
            }
            commit(txn);
            return 0;

        } catch (NetworkException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (WrongTypeException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchObjectException e) {
            e.printStackTrace();
        } catch (VersionNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        txn.rollback();
    }
    return Errno.ENOENT;

}

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