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<?php |
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namespace Staudenmeir\LaravelCte\Query\Grammars; |
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use Illuminate\Database\Query\Builder; |
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use Illuminate\Support\Str; |
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trait CompilesExpressions |
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{ |
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/** |
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* Create a new grammar instance. |
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*/ |
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public function __construct() |
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{ |
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array_unshift($this->selectComponents, 'expressions'); |
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$this->selectComponents[] = 'recursionLimit'; |
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} |
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/** |
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* Compile the common table expressions. |
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* |
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* @param \Illuminate\Database\Query\Builder $query |
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* @return string |
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*/ |
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public function compileExpressions(Builder $query) |
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{ |
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if (!$query->expressions) { |
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return ''; |
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} |
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$recursive = $this->recursiveKeyword($query->expressions); |
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$statements = []; |
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foreach ($query->expressions as $expression) { |
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$columns = $expression['columns'] ? '('.$this->columnize($expression['columns']).') ' : ''; |
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$statements[] = $this->wrapTable($expression['name']).' '.$columns.'as ('.$expression['query'].')'; |
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} |
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return 'with '.$recursive.implode(', ', $statements); |
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} |
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/** |
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* Get the "recursive" keyword. |
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* |
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* @param array $expressions |
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* @return string |
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*/ |
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protected function recursiveKeyword(array $expressions) |
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{ |
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return collect($expressions)->where('recursive', true)->isNotEmpty() ? 'recursive ' : ''; |
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} |
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/** |
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* Compile the recursion limit. |
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* |
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* @param \Illuminate\Database\Query\Builder $query |
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* @return string |
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*/ |
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public function compileRecursionLimit(Builder $query) |
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{ |
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if (is_null($query->recursionLimit)) { |
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return ''; |
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} |
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return 'option (maxrecursion '.(int) $query->recursionLimit.')'; |
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} |
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/** |
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* Compile an insert statement using a subquery into SQL. |
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* |
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* @param \Illuminate\Database\Query\Builder $query |
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* @param array $columns |
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* @param string $sql |
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* @return string |
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*/ |
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public function compileInsertUsing(Builder $query, array $columns, string $sql) |
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{ |
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$expressions = $this->compileExpressions($query); |
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$recursionLimit = $this->compileRecursionLimit($query); |
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$compiled = parent::compileInsertUsing($query, $columns, $sql); |
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return (string) Str::of($compiled) |
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->prepend($expressions, ' ') |
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->append(' ', $recursionLimit) |
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->trim(); |
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} |
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/** |
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* Compile an update statement into SQL. |
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* |
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* @param \Illuminate\Database\Query\Builder $query |
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* @param array $values |
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* @return string |
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*/ |
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public function compileUpdate(Builder $query, array $values) |
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{ |
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$compiled = parent::compileUpdate($query, $values); |
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return (string) Str::of($compiled) |
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->prepend($this->compileExpressions($query), ' ') |
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->trim(); |
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} |
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/** |
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* Prepare the bindings for an update statement. |
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* |
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* @param array $bindings |
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* @param array $values |
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* @return array |
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*/ |
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public function prepareBindingsForUpdate(array $bindings, array $values) |
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{ |
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$values = array_merge($bindings['expressions'], $values); |
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unset($bindings['expressions']); |
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return parent::prepareBindingsForUpdate($bindings, $values); |
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} |
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/** |
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* Compile a delete statement into SQL. |
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* |
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* @param \Illuminate\Database\Query\Builder $query |
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* @return string |
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*/ |
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4 |
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public function compileDelete(Builder $query) |
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{ |
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$compiled = parent::compileDelete($query); |
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return (string) Str::of($compiled) |
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4 |
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->prepend($this->compileExpressions($query), ' ') |
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->trim(); |
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} |
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} |
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staudenmeir /
laravel-cte
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