* @param oper the logical operator
* @return the appened html
*/
protected Html genJoinExpressions(Html html, P2jLogicalRelationalOperator oper) {
if (oper.getOperator().equalsIgnoreCase("LOJoin") || oper.getOperator().equalsIgnoreCase("LOCogroup")) {
Join join;
if (oper.getOperator().equalsIgnoreCase("LOJoin")) {
join = ((P2jLOJoin) oper).getJoin();
} else {
join = ((P2jLOCogroup) oper).getGroup();
}
Set<Entry<String, JoinExpression>> expressions = join.getExpression().entrySet();
List<List<String>> exp = Lists.newArrayList();
for (Entry<String, JoinExpression> entry : expressions) {
exp.add(entry.getValue().getFields());
}
if (expressions.size() > 1) {