@Override
  public final void clear() {
    throw new UnsupportedOperationException();
  }

  @Override
  public boolean isEmpty() {
    return size() == 0;
  }

  @Override
  public boolean containsKey(@Nullable Object key) {
    return get(key) != null;
  }

  @Override
  public boolean containsValue(@Nullable Object value) {
    return values().contains(value);
  }

    public ColumnInfo columnCreatedTime() {
        return _columnCreatedTime;
    }

    public ColumnInfo columnDepth() {
        return _columnDepth;
    }

    public ColumnInfo columnDescription() {
        return _columnDescription;
    }

    public ColumnInfo columnExcludedDocPaths() {
        return _columnExcludedDocPaths;
    }

    public ColumnInfo columnExcludedPaths() {

    @Override
    public String getProjectName() {
        return null;
    }

    @Override
    public String getProjectPrefix() {
        return null;
    }

    @Override
    public String getGenerationGapBasePrefix() {
        return null;
    }

    @Override
    public DBDef getCurrentDBDef() {
        return null;
    }

    @Override
    public String getProjectName() {
        return null;
    }

    @Override
    public String getProjectPrefix() {
        return null;
    }

    @Override
    public String getGenerationGapBasePrefix() {
        return null;
    }

    @Override
    public DBDef getCurrentDBDef() {
        return null;
    }

    @Override
    public String getProjectName() {
        return null;
    }

    @Override
    public String getProjectPrefix() {
        return null;
    }

    @Override
    public String getGenerationGapBasePrefix() {
        return null;
    }

    @Override
    public DBDef getCurrentDBDef() {
        return null;
    }

    public ColumnInfo columnName() {
        return _columnName;
    }

    public ColumnInfo columnPermissions() {
        return _columnPermissions;
    }

    public ColumnInfo columnSortOrder() {
        return _columnSortOrder;
    }

    public ColumnInfo columnUpdatedBy() {
        return _columnUpdatedBy;
    }

    public ColumnInfo columnUpdatedTime() {
        return _columnUpdatedTime;

    public boolean hasChildren() {
        return children != null;
    }
    // ------------------------------------------------------------------------
    public ArtifactMetadata getMd() {
        return md;
    }

    public void setMd(ArtifactMetadata md) {
        this.md = md;
    }

    public MetadataTreeNode getParent() {
        return parent;
    }

    @Override
    public CrawlingInfoParamDbm asDBMeta() {
        return CrawlingInfoParamDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "crawling_info_param";
    }

    @Override
    public boolean hasSpecifiedColumn() {
        return _specification != null;
    }

    @Override
    public ConditionQuery localCQ() {

     */
    public boolean isSuccess() {
        return status == 0;
    }

    /**
     * Get negotiation status
     *
     * @return status code (0 = success)
     */
    public int getStatus() {
        return status;
    }

    /**
     * Set negotiation status
     *
     * @param status status code
     */
    public void setStatus(int status) {

     */
    public static final String SESSION_ID = "sessionId";

    /**
     * Field name for rule ID.
     */
    public static final String RULE_ID = "ruleId";

    /**
     * Field name for URL.
     */
    public static final String URL = "url";

    /**
     * Field name for parent URL.
     */
    public static final String PARENT_URL = "parentUrl";

    /**
     * Field name for status.
     */