|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Staudenmeir\LaravelAdjacencyList\Query\Grammars; |
|
4
|
|
|
|
|
5
|
|
|
use Illuminate\Database\Query\Builder; |
|
6
|
|
|
use Illuminate\Database\Query\Grammars\SqlServerGrammar as Base; |
|
7
|
|
|
use RuntimeException; |
|
8
|
|
|
|
|
9
|
|
|
class SqlServerGrammar extends Base implements ExpressionGrammar |
|
10
|
|
|
{ |
|
11
|
|
|
use OrdersByPath; |
|
12
|
|
|
|
|
13
|
|
|
/** |
|
14
|
|
|
* Compile an initial path. |
|
15
|
|
|
* |
|
16
|
|
|
* @param string $column |
|
17
|
|
|
* @param string $alias |
|
18
|
|
|
* @return string |
|
19
|
|
|
*/ |
|
20
|
113 |
|
public function compileInitialPath($column, $alias) |
|
21
|
|
|
{ |
|
22
|
113 |
|
return 'cast('.$this->wrap($column).' as varchar) as '.$this->wrap($alias); |
|
23
|
|
|
} |
|
24
|
|
|
|
|
25
|
|
|
/** |
|
26
|
|
|
* Compile a recursive path. |
|
27
|
|
|
* |
|
28
|
|
|
* @param string $column |
|
29
|
|
|
* @param string $alias |
|
30
|
|
|
* @param bool $reverse |
|
31
|
|
|
* @return string |
|
32
|
|
|
*/ |
|
33
|
113 |
|
public function compileRecursivePath($column, $alias, bool $reverse = false) |
|
34
|
|
|
{ |
|
35
|
113 |
|
$wrappedColumn = $this->wrap($column); |
|
36
|
113 |
|
$wrappedAlias = $this->wrap($alias); |
|
37
|
|
|
|
|
38
|
113 |
|
if ($reverse) { |
|
39
|
95 |
|
return "cast(cast($wrappedColumn as varchar) + ? + $wrappedAlias as varchar) as $wrappedAlias"; |
|
40
|
|
|
} |
|
41
|
|
|
|
|
42
|
113 |
|
return "cast($wrappedAlias + ? + cast($wrappedColumn as varchar) as varchar) as $wrappedAlias"; |
|
43
|
|
|
} |
|
44
|
|
|
|
|
45
|
|
|
/** |
|
46
|
|
|
* Get the recursive path bindings. |
|
47
|
|
|
* |
|
48
|
|
|
* @param string $separator |
|
49
|
|
|
* @return array |
|
50
|
|
|
*/ |
|
51
|
113 |
|
public function getRecursivePathBindings($separator) |
|
52
|
|
|
{ |
|
53
|
113 |
|
return [$separator]; |
|
54
|
|
|
} |
|
55
|
|
|
|
|
56
|
|
|
/** |
|
57
|
|
|
* Select a concatenated list of paths. |
|
58
|
|
|
* |
|
59
|
|
|
* @param \Illuminate\Database\Query\Builder $query |
|
60
|
|
|
* @param string $expression |
|
61
|
|
|
* @param string $column |
|
62
|
|
|
* @param string $pathSeparator |
|
63
|
|
|
* @param string $listSeparator |
|
64
|
|
|
* @return \Illuminate\Database\Query\Builder |
|
65
|
|
|
*/ |
|
66
|
17 |
|
public function selectPathList(Builder $query, $expression, $column, $pathSeparator, $listSeparator) |
|
67
|
|
|
{ |
|
68
|
17 |
|
return $query->selectRaw( |
|
69
|
17 |
|
'stuff((select ? + '.$this->wrap($column).' from '.$this->wrapTable($expression)." for xml path('')), 1, ?, '')", |
|
70
|
17 |
|
[$listSeparator, strlen($listSeparator)] |
|
71
|
17 |
|
); |
|
72
|
|
|
} |
|
73
|
|
|
|
|
74
|
|
|
/** |
|
75
|
|
|
* Compile a pivot column null value. |
|
76
|
|
|
* |
|
77
|
|
|
* @param string $type |
|
78
|
|
|
* @param int $precision |
|
79
|
|
|
* @param int $scale |
|
80
|
|
|
* @return string |
|
81
|
|
|
*/ |
|
82
|
|
|
public function compilePivotColumnNullValue(string $type, int $precision, int $scale): string |
|
83
|
|
|
{ |
|
84
|
|
|
throw new RuntimeException('This graph relationship feature is not supported on SQL Server.'); // @codeCoverageIgnore |
|
85
|
|
|
} |
|
86
|
|
|
|
|
87
|
|
|
/** |
|
88
|
|
|
* Compile a cycle detection clause. |
|
89
|
|
|
* |
|
90
|
|
|
* @param string $localKey |
|
91
|
|
|
* @param string $path |
|
92
|
|
|
* @return string |
|
93
|
|
|
*/ |
|
94
|
8 |
|
public function compileCycleDetection(string $localKey, string $path): string |
|
95
|
|
|
{ |
|
96
|
8 |
|
$localKey = $this->wrap($localKey); |
|
97
|
8 |
|
$path = $this->wrap($path); |
|
98
|
|
|
|
|
99
|
8 |
|
$castLocalKey = "cast($localKey as varchar)"; |
|
100
|
|
|
|
|
101
|
8 |
|
return "charindex($castLocalKey + ?, $path) > 0 or charindex(? + $castLocalKey + ?, $path) > 0"; |
|
102
|
|
|
} |
|
103
|
|
|
|
|
104
|
|
|
/** |
|
105
|
|
|
* Get the cycle detection bindings. |
|
106
|
|
|
* |
|
107
|
|
|
* @param string $pathSeparator |
|
108
|
|
|
* @return array |
|
109
|
|
|
*/ |
|
110
|
8 |
|
public function getCycleDetectionBindings(string $pathSeparator): array |
|
111
|
|
|
{ |
|
112
|
8 |
|
return [$pathSeparator, $pathSeparator, $pathSeparator]; |
|
113
|
|
|
} |
|
114
|
|
|
|
|
115
|
|
|
/** |
|
116
|
|
|
* Compile the initial select expression for a cycle detection clause. |
|
117
|
|
|
* |
|
118
|
|
|
* @param string $column |
|
119
|
|
|
* @return string |
|
120
|
|
|
*/ |
|
121
|
4 |
|
public function compileCycleDetectionInitialSelect(string $column): string |
|
122
|
|
|
{ |
|
123
|
4 |
|
return '0 as ' . $this->wrap($column); |
|
124
|
|
|
} |
|
125
|
|
|
|
|
126
|
|
|
/** |
|
127
|
|
|
* Compile the recursive select expression for a cycle detection clause. |
|
128
|
|
|
* |
|
129
|
|
|
* @param string $sql |
|
130
|
|
|
* @param string $column |
|
131
|
|
|
* @return string |
|
132
|
|
|
*/ |
|
133
|
4 |
|
public function compileCycleDetectionRecursiveSelect(string $sql, string $column): string |
|
134
|
|
|
{ |
|
135
|
4 |
|
return "case when $sql then 1 else 0 end as " . $this->wrap($column); |
|
136
|
|
|
} |
|
137
|
|
|
|
|
138
|
|
|
/** |
|
139
|
|
|
* Compile the stop constraint for a cycle detection clause. |
|
140
|
|
|
* |
|
141
|
|
|
* @param string $column |
|
142
|
|
|
* @return string |
|
143
|
|
|
*/ |
|
144
|
4 |
|
public function compileCycleDetectionStopConstraint(string $column): string |
|
145
|
|
|
{ |
|
146
|
4 |
|
return $this->wrap($column) . ' = 0'; |
|
147
|
|
|
} |
|
148
|
|
|
|
|
149
|
|
|
/** |
|
150
|
|
|
* Determine whether the database supports the UNION operator in a recursive expression. |
|
151
|
|
|
* |
|
152
|
|
|
* @return bool |
|
153
|
|
|
*/ |
|
154
|
8 |
|
public function supportsUnionInRecursiveExpression(): bool |
|
155
|
|
|
{ |
|
156
|
8 |
|
return false; |
|
157
|
|
|
} |
|
158
|
|
|
} |
|
159
|
|
|
|
staudenmeir /
laravel-adjacency-list
