void AbstractScanPlanNode::loadFromJSONObject(PlannerDomValue obj)
{
m_target_table_name = obj.valueForKey("TARGET_TABLE_NAME").asStr();
m_isEmptyScan = obj.hasNonNullKey("PREDICATE_FALSE");
// Set the predicate (if any) only if it's not a trivial FALSE expression
if (!m_isEmptyScan) {
m_predicate.reset(loadExpressionFromJSONObject("PREDICATE", obj));
}
m_tcd = NULL;
m_cteStmtId = -1;
if (obj.hasKey("IS_CTE_SCAN") && obj.valueForKey("IS_CTE_SCAN").asBool()) {
m_scanType = CTE_SCAN;
m_cteStmtId = obj.valueForKey("CTE_STMT_ID").asInt();
}
else if (obj.hasNonNullKey("SUBQUERY_INDICATOR")) {
m_scanType = SUBQUERY_SCAN;
}
else {
m_scanType = PERSISTENT_TABLE_SCAN;
VoltDBEngine* engine = ExecutorContext::getEngine();
m_tcd = engine->getTableDelegate(m_target_table_name);
if ( ! m_tcd) {
VOLT_ERROR("Failed to retrieve target table from execution engine for PlanNode '%s'",
debug().c_str());
//TODO: throw something
}
}
}
void IndexCountPlanNode::loadFromJSONObject(PlannerDomValue obj)
{
AbstractScanPlanNode::loadFromJSONObject(obj);
std::string endTypeString = obj.valueForKey("END_TYPE").asStr();
m_end_type = stringToIndexLookup(endTypeString);
std::string lookupTypeString = obj.valueForKey("LOOKUP_TYPE").asStr();
m_lookup_type = stringToIndexLookup(lookupTypeString);
m_target_index_name = obj.valueForKey("TARGET_INDEX_NAME").asStr();
m_searchkey_expressions.loadExpressionArrayFromJSONObject("SEARCHKEY_EXPRESSIONS", obj);
m_endkey_expressions.loadExpressionArrayFromJSONObject("ENDKEY_EXPRESSIONS", obj);
m_skip_null_predicate.reset(loadExpressionFromJSONObject("SKIP_NULL_PREDICATE", obj));
}