1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "unaryfunctionnode.h"
#include "integerresultnode.h"
#include "resultvector.h"
namespace search::expression {
class TimeStampFunctionNode : public UnaryFunctionNode
{
public:
enum TimePart { Year=0, Month=1, MonthDay=2, WeekDay=3, Hour=4, Minute=5, Second=6, YearDay=7, IsDST=8 };
DECLARE_EXPRESSIONNODE(TimeStampFunctionNode);
DECLARE_NBO_SERIALIZE;
TimeStampFunctionNode();
TimeStampFunctionNode(ExpressionNode::UP arg, TimePart timePart, bool gmt=true);
~TimeStampFunctionNode();
TimeStampFunctionNode(const TimeStampFunctionNode & rhs);
TimeStampFunctionNode & operator = (const TimeStampFunctionNode & rhs);
unsigned int getTime() const { return getResult()->getInteger(); } // Not valid until after node has been prepared
TimePart getTimePart() const { return _timePart; }
TimeStampFunctionNode & setTimePart(TimePart timePart) { _timePart = timePart; return *this; }
bool isGmt() const { return _isGmt; }
bool isLocal() const { return ! isGmt(); }
protected:
/*
unsigned year(timestamp); [1970 - 2039]
unsigned month(timestamp); [1-12]
unsigned date(timestamp); [1-31]
unsigned weekday(timestamp); [1-7]
unsigned hour(timestamp); [0-23]
unsigned minute(timestamp);[0-59]
unsigned second(timestamp);[0-59]
*/
bool onExecute() const override;
void onPrepareResult() override;
private:
class Handler {
public:
Handler(const TimeStampFunctionNode & ts) : _timePart(ts.getTimePart()), _isGmt(ts.isGmt()) { }
virtual ~Handler() { }
virtual void handle(const ResultNode & arg) = 0;
protected:
void handleOne(const ResultNode & arg, Int64ResultNode & result) const {
result.set(TimeStampFunctionNode::getTimePart(arg.getInteger(), _timePart, _isGmt));
}
private:
TimePart _timePart;
bool _isGmt;
};
class SingleValueHandler : public Handler {
public:
SingleValueHandler(TimeStampFunctionNode & ts) : Handler(ts), _result(static_cast<Int64ResultNode &>(ts.updateResult())) { }
void handle(const ResultNode & arg) override;
private:
Int64ResultNode & _result;
};
class MultiValueHandler : public Handler {
public:
MultiValueHandler(TimeStampFunctionNode & ts) : Handler(ts), _result(static_cast<IntegerResultNodeVector &>(ts.updateResult())) { }
void handle(const ResultNode & arg) override;
private:
IntegerResultNodeVector & _result;
};
const ResultNode & getTimeStamp() const { return *getArg().getResult(); }
void init();
Int64ResultNode & updateIntegerResult() const { return static_cast<Int64ResultNode &>(updateResult()); }
static unsigned getTimePart(time_t time, TimePart, bool gmt);
TimePart _timePart;
bool _isGmt;
std::unique_ptr<Handler> _handler;
};
}
|
