INNER CODE UNIT · Java

safe

SeaseLtd/rated-ranking-evaluator · rre-core/src/main/java/io/sease/rre/Func.java:66

    public static <T> List<T> safe(final List<T> values) {
        return values != null ? values : emptyList();
    }

    /**
     * Converts the content of the given file to a JSON node.
     *
     * @param file the input file.
     * @return a {@link JsonNode} instance representing the file content.
     */
    public static JsonNode toJson(final File file) {
        final ObjectMapper mapper = new ObjectMapper();
        try {
            return mapper.readTree(file);
        } catch (final IOException exception) {
            throw new IllegalArgumentException(file.getAbsolutePath(), exception);
        }
    }

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