Examples of java.util.prefs.Preferences.node()

java.util.prefs.Preferences.node()
Returns the named preference node in the same tree as this node, creating it and any of its ancestors if they do not already exist. Accepts a relative or absolute path name. Relative path names (which do not begin with the slash character ('/')) are interpreted relative to this preference node.
If the returned node did not exist prior to this call, this node and any ancestors that were created by this call are not guaranteed to become permanent until the flush method is called on the returned node (or one of its ancestors or descendants). @param pathName the path name of the preference node to return. @return the specified preference node. @throws IllegalArgumentException if the path name is invalid (i.e.,it contains multiple consecutive slash characters, or ends with a slash character and is more than one character long). @throws NullPointerException if path name is null. @throws IllegalStateException if this node (or an ancestor) has beenremoved with the {@link #removeNode()} method. @see #flush()

    private void loadChilds(Device device, Preferences deviceNode)
            throws BackingStoreException, ConfigurationException {
        Preferences connsNode = deviceNode.node("dcmNetworkConnection");
        for (int connIndex : sort(connsNode.childrenNames())) {
            Connection conn = newConnection();
            loadFrom(conn, connsNode.node("" + connIndex));
            device.addConnection(conn);
        }
        List<Connection> devConns = device.listConnections();
        Preferences aesNode = deviceNode.node("dcmNetworkAE");
        for (String aet : aesNode.childrenNames()) {

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    private void loadTransferCapabilities(ApplicationEntity ae,
            Preferences tcsNode, Role role) throws BackingStoreException {
        Preferences roleNode = tcsNode.node(role.name());
        for (String cuid : roleNode.childrenNames())
            ae.addTransferCapability(
                    loadTransferCapability(roleNode.node(cuid), cuid, role));
    }


    public void load(AttributeCoercions acs, Preferences aeNode)
            throws BackingStoreException {
        Preferences acsNode = aeNode.node("dcmAttributeCoercion");

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        if (!prefs.nodeExists(pathName)) {
            System.err.println(MessageFormat.format(
                    rb.getString("no-such-path"), pathName));
            System.exit(2);
        }
        prefs.node(pathName).exportSubtree(System.out);
    }


}

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    }


    private void store(List<AuditSuppressCriteria> list, Preferences parentNode) {
        Preferences ascNode = parentNode.node("dcmAuditSuppressCriteria");
        for (AuditSuppressCriteria criteria : list) {
            storeTo(criteria, ascNode.node(criteria.getCommonName()));
        }
    }


    private void storeTo(AuditSuppressCriteria criteria, Preferences prefs) {
        PreferencesUtils.storeNotEmpty(prefs, "dcmAuditEventID",

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    private void loadAuditSuppressCriteria(AuditLogger logger, Preferences loggerNode)
            throws BackingStoreException {
        Preferences parentNode = loggerNode.node("dcmAuditSuppressCriteria");
        for (String cn : parentNode.childrenNames()) {
            AuditSuppressCriteria criteria = new  AuditSuppressCriteria(cn);
            loadAuditSuppressCriteria(criteria, parentNode.node(cn));
            logger.addAuditSuppressCriteria(criteria);
        }
    }


    private void loadAuditSuppressCriteria(AuditSuppressCriteria criteria,

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                    throws BackingStoreException {
        Preferences parentNode = auditLoggerNode.node("dcmAuditSuppressCriteria");
        for (AuditSuppressCriteria prevCriteria : prevLogger.getAuditSuppressCriteriaList()) {
            String cn = prevCriteria.getCommonName();
            if (logger.findAuditSuppressCriteriaByCommonName(cn) == null)
                parentNode.node(cn).removeNode();
        }
        for (AuditSuppressCriteria criteria : logger.getAuditSuppressCriteriaList()) {
            String cn = criteria.getCommonName();
            AuditSuppressCriteria prev = prevLogger.findAuditSuppressCriteriaByCommonName(cn);
            Preferences node = parentNode.node(cn);

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    }


    private static Preferences rootPrefs() {
        Preferences prefs = Preferences.userRoot();
        String pathName = System.getProperty(CONF_ROOT_PROPERTY);
        return pathName != null ? prefs.node(pathName) : prefs;
    }


    public PreferencesDicomConfiguration(Preferences rootPrefs) {
        this.rootPrefs = rootPrefs;
    }

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        try {
            Preferences devicePrefs = rootPrefs.node(DICOM_DEVICES_ROOT);
            for (String deviceName : devicePrefs.childrenNames()) {
                Preferences deviceNode = devicePrefs.node(deviceName);
                for (String aet2 : deviceNode.node(nodeName).childrenNames())
                    if (aet.equals(aet2))
                        return loadDevice(deviceNode);
            }
        } catch (BackingStoreException e) {
            throw new ConfigurationException(e);

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    private void storeChilds(Device device, Preferences deviceNode) throws ConfigurationException {
        Preferences connsNode = deviceNode.node("dcmNetworkConnection");
        int connIndex = 1;
        List<Connection> devConns = device.listConnections();
        for (Connection conn : devConns)
            storeTo(conn, connsNode.node("" + connIndex++));
        Preferences aesNode = deviceNode.node("dcmNetworkAE");
        for (ApplicationEntity ae : device.getApplicationEntities()) {
            Preferences aeNode = aesNode.node(ae.getAETitle());
            storeTo(ae, aeNode, devConns);
            storeChilds(ae, aeNode);

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    private void storeTransferCapabilities(ApplicationEntity ae, Role role,
            Preferences tcsNode) {
        Preferences roleNode = tcsNode.node(role.name());
        for (TransferCapability tc : ae.getTransferCapabilitiesWithRole(role))
            storeTo(tc, roleNode.node(tc.getSopClass()));
    }


    public void store(AttributeCoercions acs, Preferences parentNode) {
        Preferences acsNode = parentNode.node("dcmAttributeCoercion");
        for (AttributeCoercion ac : acs)

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