| 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: | |
| 13: | |
| 14: | class Grammar |
| 15: | { |
| 16: | public function compileCase() |
| 17: | { |
| 18: | return function ($expression, array $cases, $else = null): string { |
| 19: | |
| 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: | } |
| 89: | |