Examples of java.nio.file.attribute.UserDefinedFileAttributeView.list()

Class java.nio.file.attribute.UserDefinedFileAttributeView

Examples of java.nio.file.attribute.UserDefinedFileAttributeView.list()

java.nio.file.attribute.UserDefinedFileAttributeView.list()
Returns a list containing the names of the user-defined attributes. @return An unmodifiable list containing the names of the file'suser-defined @throws IOException If an I/O error occurs @throws SecurityException In the case of the default provider, a security manager is installed, and it denies {@link RuntimePermission}("accessUserDefinedAttributes") or its {@link SecurityManager#checkRead(String) checkRead} methoddenies read access to the file.

  public void testView() throws IOException {
    UserDefinedFileAttributeView view = provider.view(fileLookup(), NO_INHERITED_VIEWS);
    assertNotNull(view);


    assertThat(view.name()).isEqualTo("user");
    assertThat(view.list()).isEmpty();


    byte[] b1 = {0, 1, 2};
    byte[] b2 = {0, 1, 2, 3, 4};


    view.write("b1", ByteBuffer.wrap(b1));

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    byte[] b2 = {0, 1, 2, 3, 4};


    view.write("b1", ByteBuffer.wrap(b1));
    view.write("b2", ByteBuffer.wrap(b2));


    assertThat(view.list()).containsAllOf("b1", "b2");
    assertThat(file.getAttributeKeys()).containsExactly("user:b1", "user:b2");


    assertThat(view.size("b1")).is(3);
    assertThat(view.size("b2")).is(5);

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    assertThat(Arrays.equals(b1, buf1.array())).isTrue();
    assertThat(Arrays.equals(b2, buf2.array())).isTrue();


    view.delete("b2");


    assertThat(view.list()).containsExactly("b1");
    assertThat(file.getAttributeKeys()).containsExactly("user:b1");


    try {
      view.size("b2");
      fail();

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         Date expires = null;
         ImmutableMap.Builder<String, String> userMetadata = ImmutableMap.builder();


         if (getFileStore(file.toPath()).supportsFileAttributeView(UserDefinedFileAttributeView.class)) {
            UserDefinedFileAttributeView view = getFileAttributeView(path, UserDefinedFileAttributeView.class);
            Set<String> attributes = ImmutableSet.copyOf(view.list());


            contentDisposition = readStringAttributeIfPresent(view, attributes, XATTR_CONTENT_DISPOSITION);
            contentEncoding = readStringAttributeIfPresent(view, attributes, XATTR_CONTENT_ENCODING);
            contentLanguage = readStringAttributeIfPresent(view, attributes, XATTR_CONTENT_LANGUAGE);
            contentType = readStringAttributeIfPresent(view, attributes, XATTR_CONTENT_TYPE);

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