Examples with MCRTopologicalSort org.mycore.tools.MCRTopologicalSort used on opensource projects

Example 1 with MCRTopologicalSort

use of org.mycore.tools.MCRTopologicalSort in project mycore by MyCoRe-Org.

the class MCRObjectCommands method processFromDirectory.

/**
 * Load or update MCRObject's from all XML files in a directory.
 *
 * @param topological
 *            if true, the dependencies of parent and child objects will be respected
 * @param directory
 *            the directory containing the XML files
 * @param update
 *            if true, object will be updated, else object is created
 */
private static List<String> processFromDirectory(boolean topological, String directory, boolean update) {
    File dir = new File(directory);
    if (!dir.isDirectory()) {
        LOGGER.warn("{} ignored, is not a directory.", directory);
        return null;
    }
    String[] list = dir.list();
    if (list == null || list.length == 0) {
        LOGGER.warn("No files found in directory {}", directory);
        return null;
    }
    Predicate<String> isMetaXML = file -> file.endsWith(".xml") && !file.contains("derivate");
    Function<String, String> cmdFromFile = file -> (update ? "update" : "load") + " object from file " + new File(dir, file).getAbsolutePath();
    if (topological) {
        MCRTopologicalSort ts = new MCRTopologicalSort();
        ts.prepareData(list, dir);
        return Optional.ofNullable(ts.doTopoSort()).map(Arrays::stream).map(is -> is.mapToObj(i -> list[i])).orElse(Stream.empty()).filter(isMetaXML).map(cmdFromFile).collect(Collectors.toList());
    } else {
        return Arrays.stream(list).filter(isMetaXML).sorted().map(cmdFromFile).collect(Collectors.toList());
    }
}

Example 2 with MCRTopologicalSort

use of org.mycore.tools.MCRTopologicalSort in project mycore by MyCoRe-Org.

the class MCRObjectCommands method deleteTopologicalAllObjects.

/**
 * Delete all MCRObjects from the datastore in topological order
 */
@MCRCommand(syntax = "delete all objects in topological order", help = "Removes all MCRObjects in topological order.", order = 25)
public static List<String> deleteTopologicalAllObjects() {
    final List<String> objectIds = MCRXMLMetadataManager.instance().listIDs();
    String[] objects = objectIds.stream().filter(id -> !id.contains("_derivate_")).toArray(String[]::new);
    MCRTopologicalSort ts = new MCRTopologicalSort();
    ts.prepareMCRObjects(objects);
    int[] order = ts.doTopoSort();
    List<String> cmds = new ArrayList<>(objectIds.size());
    if (order != null) {
        // delete in reverse order
        for (int o = order.length - 1; o >= 0; o--) {
            cmds.add("delete object " + ts.getNodeName(order[o]));
        }
    }
    return cmds;
}