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Classes/VirtualObject/Persistence/Backend/AbstractSqlExpression.php
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| <?php | ||
| declare(strict_types=1); | ||
|
|
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| namespace Cundd\Rest\VirtualObject\Persistence\Backend; | ||
|
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| use Cundd\Rest\VirtualObject\Persistence\QueryInterface; | ||
|
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| abstract class AbstractSqlExpression implements SqlExpressionInterface | ||
| { | ||
| private $expression = ''; | ||
| private $boundVariables = []; | ||
|
|
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| /** | ||
| * Expression constructor | ||
| * | ||
| * @param string $sqlExpression | ||
| * @param array $boundVariables | ||
| */ | ||
| public function __construct(string $sqlExpression = '', array $boundVariables = []) | ||
| { | ||
| $this->expression = $sqlExpression; | ||
| $this->boundVariables = $boundVariables; | ||
| } | ||
|
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| public function setExpression(string $expression): SqlExpressionInterface | ||
| { | ||
| $this->expression = $expression; | ||
|
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| return $this; | ||
| } | ||
|
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| public function appendSql( | ||
| string $expression, | ||
| string $combinator = QueryInterface::COMBINATOR_AND | ||
| ): SqlExpressionInterface { | ||
| $this->assertCombinator($combinator); | ||
|
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| if ($this->expression) { | ||
| $this->expression .= ' ' . strtoupper($combinator) . ' ' . $expression; | ||
| } else { | ||
| $this->expression = $expression; | ||
| } | ||
|
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| return $this; | ||
| } | ||
|
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| public function getExpression(): string | ||
| { | ||
| return $this->expression; | ||
| } | ||
|
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| public function getBoundVariables(): array | ||
| { | ||
| return $this->boundVariables; | ||
| } | ||
|
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| public function bindVariable(string $key, $value): SqlExpressionInterface | ||
| { | ||
| $this->boundVariables[$key] = $value; | ||
|
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| return $this; | ||
| } | ||
|
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| public function __toString() | ||
| { | ||
| return $this->getExpression(); | ||
| } | ||
|
|
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| /** | ||
| * @param $combinator | ||
| */ | ||
| public static function assertCombinator($combinator) | ||
| { | ||
| if (!is_string($combinator)) { | ||
| throw new \InvalidArgumentException( | ||
| sprintf( | ||
| 'Logical combinator must be of type string, \'%s\' given', | ||
| is_object($combinator) ? get_class($combinator) : gettype($combinator) | ||
| ) | ||
| ); | ||
| } | ||
| if (!in_array(strtoupper($combinator), [QueryInterface::COMBINATOR_AND, QueryInterface::COMBINATOR_OR])) { | ||
| throw new \InvalidArgumentException( | ||
| sprintf( | ||
| 'Logical combinator must be either \'%s\' or \'%s\'', | ||
| QueryInterface::COMBINATOR_AND, | ||
| QueryInterface::COMBINATOR_OR | ||
| ) | ||
| ); | ||
| } | ||
| } | ||
| } |
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45
Classes/VirtualObject/Persistence/Backend/SqlExpressionInterface.php
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| <?php | ||
| declare(strict_types=1); | ||
|
|
||
| namespace Cundd\Rest\VirtualObject\Persistence\Backend; | ||
|
|
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| use Cundd\Rest\VirtualObject\Persistence\QueryInterface; | ||
|
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| interface SqlExpressionInterface | ||
| { | ||
| /** | ||
| * Set the SQL expression string | ||
| * | ||
| * @param string $expression | ||
| * @return self | ||
| */ | ||
| public function setExpression(string $expression): self; | ||
|
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| /** | ||
| * Append the string to the SQL expression | ||
| * | ||
| * @param string $expression | ||
| * @param string $combinator | ||
| * @return self | ||
| */ | ||
| public function appendSql(string $expression, string $combinator = QueryInterface::COMBINATOR_AND): self; | ||
|
|
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| /** | ||
| * @return string | ||
| */ | ||
| public function getExpression(): string; | ||
|
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| /** | ||
| * @return array | ||
| */ | ||
| public function getBoundVariables(): array; | ||
|
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| /** | ||
| * Bind the variable to the SQL WHERE-clause | ||
| * | ||
| * @param string $key | ||
| * @param string|int|float $value | ||
| * @return self | ||
| */ | ||
| public function bindVariable(string $key, $value): self; | ||
| } |
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