| 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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit Sql.Table.Column;
interface
uses
Boolean,
Code.AggregateFunction,
Collection.List,
Condition,
Condition.Projecting,
Object_.ReferenceCounted,
Sql.Expression,
Sql.Scope,
StructuredDocument.Node,
Text,
Type_,
Type_.Structured.Member,
Value.Factory;
type
TSqlTableColumn = class(TReferenceCountedObject)
private
FScope: TSqlScope;
FCaption: TDocumentNode;
FType: TType;
FDefaultValue: TSqlExpression;
FColumnValueFactory: TValueFactory;
procedure SetScope(const Value: TSqlScope);
procedure SetDefaultValue(const Value: TSqlExpression);
procedure SetCaption(const Value: TDocumentNode);
procedure SetType(const Value: TType);
procedure SetColumnValueFactory(const Value: TValueFactory);
public
Identifier: TText;
Aggregates: TList<TAggregateFunction>;
constructor Create(); override;
destructor Destroy(); override;
function GetQualifiedIdentifier(): TText;
function CreateMember(): TStructuredTypeMember;
property Scope: TSqlScope read FScope write SetScope;
property Type_: TType read FType write SetType;
property DefaultValue: TSqlExpression read FDefaultValue write SetDefaultValue;
property Caption: TDocumentNode read FCaption write SetCaption;
property ColumnValueFactory: TValueFactory read FColumnValueFactory write SetColumnValueFactory;
public
type
THasIdentifier = class(TProjectingCondition<TSqlTableColumn, TText>)
public
function Matches(const Column: TSqlTableColumn): TBoolean; override;
end;
TIsStructured = class(TCondition<TSqlTableColumn>)
public
function Matches(const Column: TSqlTableColumn): TBoolean; override;
end;
end;
implementation
uses
Object_.List,
Reference.User,
Type_.Structured,
Value.Unknown.Factory;
{ TSqlTableColumn }
constructor TSqlTableColumn.Create();
begin
inherited Create();
Aggregates := TObjectList<TAggregateFunction>.Create();
Aggregates.ElementManager := TReferenceUser<TAggregateFunction>.Create();
ColumnValueFactory := TUnknownValueFactory.Create();
end;
function TSqlTableColumn.CreateMember(): TStructuredTypeMember;
begin
Result := TStructuredTypeMember.Create(Identifier, Caption, Type_);
end;
destructor TSqlTableColumn.Destroy();
begin
Aggregates.Free();
DefaultValue.ReleaseReference();
Caption.ReleaseReference();
Scope.ReleaseReference();
Type_.ReleaseReference();
ColumnValueFactory.ReleaseReference();
inherited Destroy();
end;
function TSqlTableColumn.GetQualifiedIdentifier(): TText;
begin
Result := '`' + Scope.Identifier + '`.`' + Identifier + '`';
end;
procedure TSqlTableColumn.SetCaption(const Value: TDocumentNode);
begin
if Value <> Caption then
begin
Value.AddReference();
Caption.ReleaseReference();
FCaption := Value;
end;
end;
procedure TSqlTableColumn.SetColumnValueFactory(const Value: TValueFactory);
begin
if Value <> ColumnValueFactory then
begin
Value.AddReference();
ColumnValueFactory.ReleaseReference();
FColumnValueFactory := Value;
end;
end;
procedure TSqlTableColumn.SetDefaultValue(const Value: TSqlExpression);
begin
if Value <> DefaultValue then
begin
Value.AddReference();
DefaultValue.ReleaseReference();
FDefaultValue := Value;
end;
end;
procedure TSqlTableColumn.SetScope(const Value: TSqlScope);
begin
if Value <> Scope then
begin
Value.AddReference();
Scope.ReleaseReference();
FScope := Value;
end;
end;
procedure TSqlTableColumn.SetType(const Value: TType);
begin
if Value <> Type_ then
begin
Value.AddReference();
Type_.ReleaseReference();
FType := Value;
end;
end;
{ TSqlTableColumn.THasIdentifier }
function TSqlTableColumn.THasIdentifier.Matches(const Column: TSqlTableColumn): TBoolean;
begin
Result := Column.Identifier = ComparisonValue;
end;
{ TSqlTableColumn.TIsStructured }
function TSqlTableColumn.TIsStructured.Matches(const Column: TSqlTableColumn): TBoolean;
begin
Result := Column.Type_.GetDecoratedType() is TRecordType;
end;
end.
|