|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
class DbSqlLiteral extends DbSqlAware { |
|
4
|
|
|
|
|
5
|
|
|
const SQL_LITERAL_ALIAS_NONE = null; |
|
6
|
|
|
const SQL_LITERAL_ALIAS_AUTO = ''; |
|
7
|
|
|
|
|
8
|
|
|
public $literal = ''; |
|
9
|
|
|
|
|
10
|
|
|
/** |
|
11
|
|
|
* DbSqlLiteral constructor. |
|
12
|
|
|
* |
|
13
|
|
|
* @param db_mysql|null $db |
|
14
|
|
|
* @param string $literal |
|
15
|
|
|
*/ |
|
16
|
1 |
|
public function __construct($db = null, $literal = '') { |
|
17
|
1 |
|
parent::__construct($db); |
|
18
|
1 |
|
$this->literal = $literal; |
|
19
|
1 |
|
} |
|
20
|
|
|
|
|
21
|
|
|
/** |
|
22
|
|
|
* Renders single argument function |
|
23
|
|
|
* - supports autobuild alias |
|
24
|
|
|
* - supports direct alias |
|
25
|
|
|
* - supports dotted field names like 'table.field' |
|
26
|
|
|
* - supports all fields with '*' and 'table.*' |
|
27
|
|
|
* |
|
28
|
|
|
* @param string $functionName |
|
29
|
|
|
* @param string $field |
|
30
|
|
|
* - '*' - all fields |
|
31
|
|
|
* - string - quoted as field name |
|
32
|
|
|
* @param null|string $alias |
|
33
|
|
|
* - DbSqlLiteral::SQL_LITERAL_ALIAS_NONE: no alias |
|
34
|
|
|
* - DbSqlLiteral::SQL_LITERAL_ALIAS_AUTO: alias from $field |
|
35
|
|
|
* - other value: using supplied alias |
|
36
|
|
|
* |
|
37
|
|
|
* @return $this |
|
38
|
|
|
*/ |
|
39
|
12 |
|
protected function buildSingleArgument($functionName, $field = '*', $alias = self::SQL_LITERAL_ALIAS_NONE) { |
|
40
|
12 |
|
if ($alias === self::SQL_LITERAL_ALIAS_AUTO) { |
|
41
|
4 |
|
$alias = $this->makeAliasFromField($functionName, $field); |
|
42
|
4 |
|
} |
|
43
|
|
|
|
|
44
|
12 |
|
$this->literal = strtoupper($functionName) . '(' . $this->makeFieldFromString($field) . ')'; |
|
45
|
|
|
|
|
46
|
12 |
|
if (!empty($alias)) { |
|
47
|
8 |
|
$this->literal .= ' AS `' . $alias . '`'; |
|
48
|
8 |
|
} |
|
49
|
|
|
|
|
50
|
12 |
|
return $this; |
|
51
|
|
|
} |
|
52
|
|
|
|
|
53
|
|
|
/** |
|
54
|
|
|
* @param string $field |
|
55
|
|
|
* @param null|string $alias |
|
56
|
|
|
* |
|
57
|
|
|
* @return $this |
|
58
|
|
|
* |
|
59
|
|
|
* @see buildSingleArgument |
|
60
|
|
|
*/ |
|
61
|
12 |
|
public function max($field = '*', $alias = self::SQL_LITERAL_ALIAS_NONE) { |
|
62
|
12 |
|
$this->buildSingleArgument('max', $field, $alias); |
|
63
|
|
|
|
|
64
|
12 |
|
return $this; |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
|
|
68
|
|
|
/** |
|
69
|
|
|
* @return string |
|
70
|
|
|
*/ |
|
71
|
12 |
|
public function __toString() { |
|
72
|
12 |
|
return $this->literal; |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
|
|
} |
|
76
|
|
|
|
supernova-ws /
SuperNova
