Examples with SoftLink io.jhdf.links.SoftLink used on opensource projects

Example 1 with SoftLink

use of io.jhdf.links.SoftLink in project drill by apache.

the class HDF5BatchReader method getFileMetadata.

/**
 * Gets the file metadata from a given HDF5 file. It will extract the file
 * name the path, and adds any information to the metadata List.
 *
 * @param group A list of paths from which the metadata will be extracted
 * @param metadata The HDF5 metadata object from which the metadata will be extracted
 * @return A list of metadata from the given file paths
 */
private List<HDF5DrillMetadata> getFileMetadata(Group group, List<HDF5DrillMetadata> metadata) {
    Map<String, HDF5Attribute> attribs;
    // that the group can be read.
    try {
        group.getChildren();
    } catch (HdfException e) {
        logger.warn(e.getMessage());
        return metadata;
    }
    for (Node node : group) {
        HDF5DrillMetadata metadataRow = new HDF5DrillMetadata();
        if (node.isLink()) {
            SoftLink link = (SoftLink) node;
            metadataRow.setPath(link.getTargetPath());
            metadataRow.setLink(true);
        } else {
            metadataRow.setPath(node.getPath());
            metadataRow.setDataType(node.getType().name());
            metadataRow.setLink(false);
            switch(node.getType()) {
                case DATASET:
                    attribs = getAttributes(node.getPath());
                    metadataRow.setAttributes(attribs);
                    metadata.add(metadataRow);
                    break;
                case GROUP:
                    attribs = getAttributes(node.getPath());
                    metadataRow.setAttributes(attribs);
                    metadata.add(metadataRow);
                    getFileMetadata((Group) node, metadata);
                    break;
                default:
                    logger.warn("Unknown data type: {}", node.getType());
            }
        }
    }
    return metadata;
}