pgLab/core/ExplainTreeModelItem.h
2022-05-26 08:25:31 +02:00

124 lines
2.5 KiB
C++

#pragma once
#include <QList>
#include <vector>
#include <memory>
#include <QMetaType>
namespace Json {
class Value;
}
class ExplainTreeModelItem;
typedef std::shared_ptr<ExplainTreeModelItem> ExplainTreeModelItemPtr;
/* Columns for tree
* 0. explain text
* 1. exclusive times
* 2. inclusive
* 3. rows x
* 4. rows
* 5. loops
*/
/** \brief Class for the nodes in the QueryExplainModel
*/
class ExplainTreeModelItem: public std::enable_shared_from_this<ExplainTreeModelItem> {
public:
typedef std::shared_ptr<ExplainTreeModelItem> ItemPtr;
struct Buffer {
int hit = 0;
int read = 0;
int dirtied = 0;
int written = 0;
QString asString() const
{
return QString::asprintf("h %d/r %d/d %d/w %d", hit, read, dirtied, written);
}
};
struct TempBlocks {
int read = 0;
int written = 0;
};
struct IoTimes {
double read = 0.0;
double write =0.0;
};
ExplainTreeModelItem();
~ExplainTreeModelItem();
ExplainTreeModelItem(const ExplainTreeModelItem &rhs) = delete;
ExplainTreeModelItem &operator=(const ExplainTreeModelItem &rhs) = delete;
void appendChild(const ItemPtr &child);
ExplainTreeModelItemPtr child(int row);
int childCount() const;
int row() const;
void setParent(const ItemPtr &parent);
ItemPtr parent();
/** ActualTotalTime minus the actual total time of it's children */
float exclusiveTime() const;
float inclusiveTime() const;
float estimateError() const;
QString detailString() const;
std::vector<ItemPtr> m_childItems;
std::weak_ptr<ExplainTreeModelItem> m_parentItem;
QString nodeType;
bool parallelAware = false; // 9.6
QString strategy;
QString joinType;
float startupCost = 0.f;
float totalCost = 0.f;
int64_t estimatedRows = 0;
int planWidth = 0;
float actualStartupTime = 0.f;
float actualTotalTime = 0.f;
int64_t actualRows = 0;
int actualLoops = 0;
QString relationName;
QString alias;
QString scanDirection;
QString indexName;
QString indexCondition;
QString indexRecheck;
QString filter;
QString hashCondition;
QString sortKey;
QString sortMethod;
int sortSpaceUsed = -1;
QString sortSpaceType;
// Buffering related
Buffer sharedBlocks;
Buffer localBlocks;
TempBlocks tempBlocks;
IoTimes ioTimes;
};
class ExplainRoot {
public:
using SPtr = std::shared_ptr<ExplainRoot>;
static SPtr createFromJson(Json::Value &json);
ExplainTreeModelItemPtr plan;
float planningTime = 0.f;
// Triggers???
float executionTime = 0.f;
float totalRuntime = 0.f;
};
Q_DECLARE_METATYPE(ExplainRoot::SPtr);