void AbstractPlanNode::loadSortListFromJSONObject(PlannerDomValue obj,
std::vector<AbstractExpression*> *sortExprs,
std::vector<SortDirectionType> *sortDirs) {
PlannerDomValue sortColumnsArray = obj.valueForKey("SORT_COLUMNS");
for (int i = 0; i < sortColumnsArray.arrayLen(); i++) {
PlannerDomValue sortColumn = sortColumnsArray.valueAtIndex(i);
bool hasDirection = (sortDirs == NULL), hasExpression = (sortExprs == NULL);
if (sortDirs && sortColumn.hasNonNullKey("SORT_DIRECTION")) {
hasDirection = true;
std::string sortDirectionStr = sortColumn.valueForKey("SORT_DIRECTION").asStr();
sortDirs->push_back(stringToSortDirection(sortDirectionStr));
}
if (sortExprs && sortColumn.hasNonNullKey("SORT_EXPRESSION")) {
hasExpression = true;
PlannerDomValue exprDom = sortColumn.valueForKey("SORT_EXPRESSION");
sortExprs->push_back(AbstractExpression::buildExpressionTree(exprDom));
}
if (!(hasExpression && hasDirection)) {
throw SerializableEEException(VOLT_EE_EXCEPTION_TYPE_EEEXCEPTION,
"OrderByPlanNode::loadFromJSONObject:"
" Does not have expression and direction.");
}
}
}
void PartitionByPlanNode::loadFromJSONObject(PlannerDomValue obj)
{
// Start with the base class.
AggregatePlanNode::loadFromJSONObject(obj);
// Read the sort expressions and directions.
PlannerDomValue sortByColumnArray = obj.valueForKey("SORT_COLUMNS");
for (int idx = 0; idx < sortByColumnArray.arrayLen(); idx += 1) {
PlannerDomValue sortColumnValue = sortByColumnArray.valueAtIndex(idx);
if (sortColumnValue.hasNonNullKey("SORT_EXPRESSION")) {
PlannerDomValue exprDom = sortColumnValue.valueForKey("SORT_EXPRESSION");
m_sortExpressions.push_back(AbstractExpression::buildExpressionTree(exprDom));
} else {
throw SerializableEEException(VOLT_EE_EXCEPTION_TYPE_EEEXCEPTION,
"PartitionByPlanNode::loadFromJSONObject:"
" Missing sort expression.");
}
if (sortColumnValue.hasNonNullKey("SORT_DIRECTION")) {
std::string dirStr = sortColumnValue.valueForKey("SORT_DIRECTION").asStr();
m_sortDirections.push_back(stringToSortDirection(dirStr));
} else {
throw SerializableEEException(VOLT_EE_EXCEPTION_TYPE_EEEXCEPTION,
"PartitionByPlanNode::loadFromJSONObject:"
" Missing sort direction.");
}
}
}
