*/
protected String genNodeHtml(P2jLogicalRelationalOperator oper) {
StringWriter writer = new StringWriter();
Html html = new Html(writer);
html.font().attr("point-size", "12").table().border("0").attr("cellborder", "1").cellspacing("0");
genOperationRow(html, oper);
genMiscRow(html, oper);
genAliasRow(html, oper);
genJoinExpressions(html, oper);
genSchema(html, oper);