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| 1 | <?php |
| 2 | |
| 3 | namespace Baril\Orderly\Mixins; |
| 4 | |
| 5 | use Illuminate\Database\Query\Grammars\MySqlGrammar; |
| 6 | use Illuminate\Database\Query\Grammars\PostgresGrammar; |
| 7 | use Illuminate\Database\Query\Grammars\SQLiteGrammar; |
| 8 | use Illuminate\Database\Query\Grammars\SqlServerGrammar; |
| 9 | use LogicException; |
| 10 | |
| 11 | /** |
| 12 | * @mixin \Illuminate\Database\Query\Grammars\Grammar |
| 13 | */ |
| 14 | class Grammar |
| 15 | { |
| 16 | public function compileCase() |
| 17 | { |
| 18 | return function ($expression, array $cases, $else = null): string { |
| 19 | /** @var \Illuminate\Database\Query\Grammars\Grammar $this */ |
| 20 | $cases = implode(' ', array_map(function ($when, $then) { |
| 21 | return "when {$this->quoteString($when)} then {$this->quoteString($then)}"; |
| 22 | }, array_keys($cases), array_values($cases))); |
| 23 | $else = is_null($else) ? '' : "else {$this->quoteString($else)}"; |
| 24 | return "case {$this->wrap($expression)} $cases $else END"; |
| 25 | }; |
| 26 | } |
| 27 | |
| 28 | public function supportsUpdateWithOrderBy() |
| 29 | { |
| 30 | return function (): bool { |
| 31 | return $this instanceof MySqlGrammar || $this instanceof SQLiteGrammar; |
| 32 | }; |
| 33 | } |
| 34 | |
| 35 | public function supportsSequences() |
| 36 | { |
| 37 | return function (): bool { |
| 38 | return !($this instanceof SQLiteGrammar); |
| 39 | }; |
| 40 | } |
| 41 | |
| 42 | public function compileCreateSequence() |
| 43 | { |
| 44 | return function (string $name, int $start = 1, int $increment = 1): string { |
| 45 | switch (true) { |
| 46 | case $this instanceof MySqlGrammar: |
| 47 | $start -= $increment; |
| 48 | return "set @$name := $start"; |
| 49 | case $this instanceof PostgresGrammar: |
| 50 | case $this instanceof SqlServerGrammar: |
| 51 | return "create sequence {$this->wrap($name)} start with $start increment by $increment"; |
| 52 | default: |
| 53 | throw new LogicException('This grammar doesn\'t support sequences!'); |
| 54 | } |
| 55 | }; |
| 56 | } |
| 57 | |
| 58 | public function compileNextVal() |
| 59 | { |
| 60 | return function (string $name, int $increment = 1): string { |
| 61 | switch (true) { |
| 62 | case $this instanceof MySqlGrammar: |
| 63 | return "@$name := @$name + $increment"; |
| 64 | case $this instanceof PostgresGrammar: |
| 65 | return "nextval({$this->quoteString($name)})"; |
| 66 | case $this instanceof SqlServerGrammar: |
| 67 | return "next value for {$this->wrap($name)}"; |
| 68 | default: |
| 69 | throw new LogicException('This grammar doesn\'t support sequences!'); |
| 70 | } |
| 71 | }; |
| 72 | } |
| 73 | |
| 74 | public function compileDropSequence() |
| 75 | { |
| 76 | return function (string $name): string { |
| 77 | switch (true) { |
| 78 | case $this instanceof MySqlGrammar: |
| 79 | return 'select 1'; |
| 80 | case $this instanceof PostgresGrammar: |
| 81 | case $this instanceof SqlServerGrammar: |
| 82 | return "drop sequence {$this->wrap($name)}"; |
| 83 | default: |
| 84 | throw new LogicException('This grammar doesn\'t support sequences!'); |
| 85 | } |
| 86 | }; |
| 87 | } |
| 88 | } |