public void execSetSession(
Session session, LogicalPlan plan, SubmitQueryResponse.Builder response) {
SetSessionNode setSessionNode = ((LogicalRootNode) plan.getRootBlock().getRoot()).getChild();
final String varName = setSessionNode.getName();
// SET CATALOG 'XXX'
if (varName.equals(SessionVars.CURRENT_DATABASE.name())) {
String databaseName = setSessionNode.getValue();
if (catalog.existDatabase(databaseName)) {
session.selectDatabase(setSessionNode.getValue());
} else {
response.setQueryId(QueryIdFactory.NULL_QUERY_ID.getProto());
response.setState(errUndefinedDatabase(databaseName));
}
// others
} else {
if (setSessionNode.hasValue()) {
session.setVariable(varName, setSessionNode.getValue());
} else {
session.removeVariable(varName);
}
}
response.setQueryId(QueryIdFactory.NULL_QUERY_ID.getProto());
response.setState(OK);
}
