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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/*
# PostgreSQL Database Modeler (pgModeler)
#
# (c) Copyright 2006-2026 - Raphael Araújo e Silva <raphael@pgmodeler.io>
#
# DEVELOPMENT, MAINTENANCE AND COMMERCIAL DISTRIBUTION BY:
# Nullptr Labs Software e Tecnologia LTDA <contact@nullptrlabs.io>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation version 3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# The complete text of GPLv3 is at LICENSE file on source code root directory.
# Also, you can get the complete GNU General Public License at <http://www.gnu.org/licenses/>
*/
/**
\ingroup libcore
\brief Implements the operations to manipulate operators on the database.
\note <strong>Creation date:</strong> 16/04/2008
*/
#ifndef OPERATOR_H
#define OPERATOR_H
#include "baseobject.h"
#include "function.h"
class __libcore Operator: public BaseObject {
private:
//! \brief Stores the functions that defines the operator
Function *functions[3];
//! \brief Stores the arguments types (left and right) used by the operator
PgSqlType argument_types[2];
//! \brief Stores the auxiliary operators
Operator *operators[2];
bool hashes, //! \brief Indicates that the operator can execute a hash join
merges; //! \brief Indicates that the operator can execute a merge join
protected:
virtual void configureSearchAttributes() override;
public:
enum FunctionId: unsigned {
FuncOperator,
FuncJoin,
FuncRestrict
};
enum ArgumentId: unsigned {
LeftArg,
RightArg
};
enum OperatorId: unsigned {
OperCommutator,
OperNegator
};
Operator();
virtual ~Operator(){}
//! \brief Defines the name of the operator
virtual void setName(const QString &name) override;
//! \brief Defines the function used by the operator (constants FUNC_[OPERATOR | JOIN | RESTRICT])
void setFunction(Function *func, FunctionId func_id);
//! \brief Defines the argument data type for operator (constants ARG_[LEFT | RIGHT])
void setArgumentType(PgSqlType arg_type, ArgumentId arg_id);
//! \brief Defines the auxiliary operators (constants OPER_[COMMUTATOR | NEGATOR])
void setOperator(Operator *oper, OperatorId op_id);
//! \brief Defines that the operator accepts hash join
void setHashes(bool value);
//! \brief Defines that the operator accepts merge join
void setMerges(bool value);
//! \brief Returns the function used by the operator referencing it by its type
Function *getFunction(FunctionId func_id);
//! \brief Returns the type of the passed argument id
PgSqlType getArgumentType(ArgumentId arg_id);
//! \brief Returns on of the auxiliary operators
Operator *getOperator(OperatorId op_id);
//! \brief Returns whether the operator accepts hash join
bool isHashes();
//! \brief Returns whether the operator accepts merge join
bool isMerges();
//! \brief Validates the passed name using the naming rule for operators
static bool isValidName(const QString &name);
//! \brief Returns the SQL / XML definition for the operator
virtual QString getSourceCode(SchemaParser::CodeType def_type, bool reduced_form) final;
virtual QString getSourceCode(SchemaParser::CodeType def_type) final;
//! \brief Returns the operator signature
virtual QString getSignature(bool format_name=true) override;
virtual void updateDependencies() override;
};
#endif
|
