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<?php |
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namespace Belamov\PostgresRange; |
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use Illuminate\Database\Schema\Blueprint; |
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use Illuminate\Database\Schema\Grammars\PostgresGrammar; |
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use Illuminate\Support\Facades\DB; |
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use Illuminate\Support\Fluent; |
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class PostgresGrammarWithRangeTypes extends PostgresGrammar |
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{ |
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protected string $timeRangeTypeName = 'timerange'; |
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protected string $timeDiffFunctionName = 'time_subtype_diff'; |
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/** |
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* @return string |
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*/ |
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public function typeDaterange(): string |
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{ |
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return 'daterange'; |
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} |
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/** |
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* @return string |
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*/ |
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public function typeTsrange(): string |
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{ |
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return 'tsrange'; |
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} |
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/** |
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* @return string |
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*/ |
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public function typeNumrange(): string |
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{ |
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return 'numrange'; |
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} |
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/** |
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* @return string |
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*/ |
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public function typeInt4range(): string |
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{ |
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return 'int4range'; |
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} |
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/** |
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* @return string |
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*/ |
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public function typeInt8range(): string |
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{ |
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return 'int8range'; |
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} |
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/** |
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* @return string |
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*/ |
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public function typeTimeRange(): string |
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{ |
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$this->addTimeRangeType(); |
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return 'timerange'; |
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} |
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protected function addTimeRangeType(): void |
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{ |
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DB::statement( |
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"CREATE OR REPLACE FUNCTION {$this->timeDiffFunctionName}(x time, y time) RETURNS float8 AS |
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'SELECT EXTRACT(EPOCH FROM (x - y))' LANGUAGE sql STRICT IMMUTABLE;" |
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); |
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DB::statement("DO $$ |
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BEGIN |
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IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = '{$this->timeRangeTypeName}') THEN |
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CREATE TYPE {$this->timeRangeTypeName} AS RANGE ( |
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subtype = time, |
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subtype_diff = {$this->timeDiffFunctionName} |
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); |
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END IF; |
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END$$;" |
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); |
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} |
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public function getFluentCommands(): array |
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{ |
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return array_merge(parent::getFluentCommands(), ['uniqueRange']); |
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} |
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/** |
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* @param Blueprint $blueprint |
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* @param Fluent $command |
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* @return string |
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*/ |
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public function compileUniqueRange(Blueprint $blueprint, Fluent $command): string |
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{ |
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if (!empty($command->additionalColumns)) { |
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$this->addBtreeGistExtension(); |
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} |
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return sprintf('alter table %s add exclude using gist (%s %s with &&)', |
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$this->wrapTable($blueprint), |
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$this->getAdditionalColumnsForExclude($command->additionalColumns), |
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$this->wrap($command->column) |
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); |
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} |
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protected function addBtreeGistExtension(): void |
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{ |
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DB::statement('CREATE EXTENSION IF NOT EXISTS btree_gist;'); |
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} |
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/** |
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* @param array $additionalColumns |
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* @return string |
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*/ |
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private function getAdditionalColumnsForExclude(array $additionalColumns): string |
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{ |
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$columns = ''; |
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foreach ($additionalColumns as $additionalColumn) { |
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$columns .= "{$additionalColumn} WITH =,"; |
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} |
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return $columns; |
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} |
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} |
belamov /
postgres-range
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