LimitPlanNode::~LimitPlanNode() {
delete limitExpression;
if (!isInline()) {
delete getOutputTable();
setOutputTable(NULL);
}
}
TupleExtractor(NValue value) :
m_table(getOutputTable(value)),
m_iterator(m_table->iterator()),
m_tuple(m_table->schema()),
m_null_tuple(m_table->schema()),
m_size(m_table->activeTupleCount())
{}
string AbstractPlanNode::debug(const string& spacer) const
{
std::ostringstream buffer;
buffer << spacer << "* " << debug() << "\n";
std::string info_spacer = spacer + " |";
buffer << debugInfo(info_spacer);
//
// Inline PlanNodes
//
if (!m_inlineNodes.empty()) {
buffer << info_spacer << "Inline Plannodes: "
<< m_inlineNodes.size() << "\n";
string internal_spacer = info_spacer + " ";
map<PlanNodeType, AbstractPlanNode*>::const_iterator it;
for (it = m_inlineNodes.begin(); it != m_inlineNodes.end(); it++) {
buffer << info_spacer << "Inline "
<< planNodeToString(it->second->getPlanNodeType())
<< ":\n";
buffer << it->second->debugInfo(internal_spacer);
}
}
//
// Output table
//
Table* outputTable = getOutputTable();
buffer << info_spacer << "Output table:\n";
if (outputTable != NULL) {
buffer << outputTable->debug(spacer + " ");
}
else {
buffer << " " << info_spacer << "<NULL>\n";
}
//
// Input tables
//
for (int i = 0; i < getInputTableCount(); ++i) {
Table* inputTable = getInputTable(i);
buffer << info_spacer << "Input table " << i << ":\n";
if (inputTable != NULL) {
buffer << inputTable->debug(spacer + " ");
}
else {
buffer << " " << info_spacer << "<NULL>\n";
}
}
//
// Traverse the tree
//
string child_spacer = spacer + " ";
for (int ctr = 0, cnt = static_cast<int>(m_children.size()); ctr < cnt; ctr++) {
buffer << child_spacer << m_children[ctr]->getPlanNodeType() << "\n";
buffer << m_children[ctr]->debug(child_spacer);
}
return (buffer.str());
}
MaterializePlanNode::~MaterializePlanNode() {
delete getOutputTable();
setOutputTable(NULL);
}
UnionPlanNode::~UnionPlanNode() {
delete getOutputTable();
setOutputTable(NULL);
}
/*
* If the output table needs to be cleared then this SeqScanNode is for an executor that created
* its own output table rather then forwarding a reference to the persistent table being scanned.
* It still isn't necessarily safe to delete the output table since an inline projection node/executor
* may have created the table so check if there is an inline projection node.
*
* This is a fragile approach to determining whether or not to delete the output table. Maybe
* it is safer to have the inline nodes be deleted first and set the output table of the
* enclosing plannode to NULL so the delete can be safely repeated.
*/
SeqScanPlanNode::~SeqScanPlanNode() {
if (needsOutputTableClear() && getInlinePlanNode(PLAN_NODE_TYPE_PROJECTION) == NULL) {
delete getOutputTable();
setOutputTable(NULL);
}
}