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<?php |
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declare(strict_types=1); |
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namespace Ivory\Connection; |
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use Ivory\Query\IRelationDefinition; |
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use Ivory\Relation\Cursor; |
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use Ivory\Relation\CursorProperties; |
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use Ivory\Relation\ICursor; |
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class CursorControl implements ICursorControl |
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{ |
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private $stmtExec; |
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public function __construct(IStatementExecution $stmtExec) |
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{ |
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$this->stmtExec = $stmtExec; |
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} |
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public function declareCursor(string $name, IRelationDefinition $relationDefinition, int $options = 0): ICursor |
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{ |
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$isBinary = (bool)($options & ICursor::BINARY); |
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$isHoldable = (bool)($options & ICursor::HOLDABLE); |
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$isScrollable = null; |
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$declarePattern = 'DECLARE %ident'; |
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if ($isBinary) { |
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$declarePattern .= ' BINARY'; |
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} |
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if ($options & ICursor::NON_SCROLLABLE) { |
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if ($options & ICursor::SCROLLABLE) { |
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throw new \LogicException("Cursor `$name` specified to be both scrollable and non-scrollable"); |
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} |
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$isScrollable = false; |
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$declarePattern .= ' NO SCROLL'; |
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} elseif ($options & ICursor::SCROLLABLE) { |
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$isScrollable = true; |
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$declarePattern .= ' SCROLL'; |
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} |
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$declarePattern .= ' CURSOR'; |
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if ($isHoldable) { |
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$declarePattern .= ' WITH HOLD'; |
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} |
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$declarePattern .= ' FOR %rel'; |
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$this->stmtExec->command($declarePattern, $name, $relationDefinition); |
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if ($isScrollable !== null) { |
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$props = new CursorProperties($isHoldable, $isScrollable, $isBinary); |
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} else { |
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$props = null; |
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} |
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return new Cursor($this->stmtExec, $name, $props); |
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} |
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public function getAllCursors(): array |
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{ |
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$rel = $this->stmtExec->query( |
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"SELECT name, is_holdable, is_scrollable, is_binary |
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FROM pg_catalog.pg_cursors |
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WHERE name != '' |
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ORDER BY creation_time" |
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); |
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$result = []; |
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foreach ($rel as $tuple) { |
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$name = $tuple->name; |
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$props = new CursorProperties($tuple->is_holdable, $tuple->is_scrollable, $tuple->is_binary); |
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$result[$name] = new Cursor($this->stmtExec, $name, $props); |
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} |
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return $result; |
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} |
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public function closeAllCursors(): void |
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{ |
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$this->stmtExec->command('CLOSE ALL'); |
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} |
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} |
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ondrej-bouda /
ivory
