178 lines
5 KiB
PHP
178 lines
5 KiB
PHP
<?php
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namespace MailPoetVendor\Doctrine\DBAL\Schema;
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if (!defined('ABSPATH')) exit;
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use MailPoetVendor\Doctrine\DBAL\Platforms\AbstractPlatform;
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use InvalidArgumentException;
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use function array_filter;
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use function array_keys;
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use function array_map;
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use function array_search;
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use function array_shift;
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use function count;
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use function strtolower;
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class Index extends AbstractAsset implements Constraint
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{
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protected $_columns = [];
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protected $_isUnique = \false;
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protected $_isPrimary = \false;
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protected $_flags = [];
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private array $options = [];
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public function __construct($name, array $columns, $isUnique = \false, $isPrimary = \false, array $flags = [], array $options = [])
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{
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$isUnique = $isUnique || $isPrimary;
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$this->_setName($name);
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$this->_isUnique = $isUnique;
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$this->_isPrimary = $isPrimary;
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$this->options = $options;
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foreach ($columns as $column) {
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$this->_addColumn($column);
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}
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foreach ($flags as $flag) {
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$this->addFlag($flag);
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}
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}
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protected function _addColumn(string $column) : void
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{
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$this->_columns[$column] = new Identifier($column);
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}
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public function getColumns()
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{
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return array_keys($this->_columns);
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}
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public function getQuotedColumns(AbstractPlatform $platform)
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{
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$subParts = $platform->supportsColumnLengthIndexes() && $this->hasOption('lengths') ? $this->getOption('lengths') : [];
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$columns = [];
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foreach ($this->_columns as $column) {
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$length = array_shift($subParts);
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$quotedColumn = $column->getQuotedName($platform);
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if ($length !== null) {
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$quotedColumn .= '(' . $length . ')';
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}
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$columns[] = $quotedColumn;
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}
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return $columns;
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}
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public function getUnquotedColumns()
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{
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return array_map([$this, 'trimQuotes'], $this->getColumns());
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}
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public function isSimpleIndex()
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{
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return !$this->_isPrimary && !$this->_isUnique;
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}
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public function isUnique()
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{
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return $this->_isUnique;
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}
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public function isPrimary()
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{
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return $this->_isPrimary;
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}
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public function hasColumnAtPosition($name, $pos = 0)
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{
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$name = $this->trimQuotes(strtolower($name));
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$indexColumns = array_map('strtolower', $this->getUnquotedColumns());
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return array_search($name, $indexColumns, \true) === $pos;
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}
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public function spansColumns(array $columnNames)
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{
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$columns = $this->getColumns();
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$numberOfColumns = count($columns);
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$sameColumns = \true;
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for ($i = 0; $i < $numberOfColumns; $i++) {
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if (isset($columnNames[$i]) && $this->trimQuotes(strtolower($columns[$i])) === $this->trimQuotes(strtolower($columnNames[$i]))) {
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continue;
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}
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$sameColumns = \false;
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}
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return $sameColumns;
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}
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public function isFullfilledBy(Index $other)
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{
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return $this->isFulfilledBy($other);
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}
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public function isFulfilledBy(Index $other) : bool
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{
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// allow the other index to be equally large only. It being larger is an option
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// but it creates a problem with scenarios of the kind PRIMARY KEY(foo,bar) UNIQUE(foo)
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if (count($other->getColumns()) !== count($this->getColumns())) {
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return \false;
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}
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// Check if columns are the same, and even in the same order
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$sameColumns = $this->spansColumns($other->getColumns());
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if ($sameColumns) {
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if (!$this->samePartialIndex($other)) {
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return \false;
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}
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if (!$this->hasSameColumnLengths($other)) {
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return \false;
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}
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if (!$this->isUnique() && !$this->isPrimary()) {
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// this is a special case: If the current key is neither primary or unique, any unique or
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// primary key will always have the same effect for the index and there cannot be any constraint
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// overlaps. This means a primary or unique index can always fulfill the requirements of just an
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// index that has no constraints.
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return \true;
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}
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if ($other->isPrimary() !== $this->isPrimary()) {
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return \false;
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}
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return $other->isUnique() === $this->isUnique();
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}
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return \false;
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}
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public function overrules(Index $other)
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{
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if ($other->isPrimary()) {
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return \false;
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}
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if ($this->isSimpleIndex() && $other->isUnique()) {
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return \false;
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}
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return $this->spansColumns($other->getColumns()) && ($this->isPrimary() || $this->isUnique()) && $this->samePartialIndex($other);
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}
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public function getFlags()
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{
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return array_keys($this->_flags);
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}
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public function addFlag($flag)
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{
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$this->_flags[strtolower($flag)] = \true;
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return $this;
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}
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public function hasFlag($flag)
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{
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return isset($this->_flags[strtolower($flag)]);
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}
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public function removeFlag($flag)
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{
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unset($this->_flags[strtolower($flag)]);
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}
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public function hasOption($name)
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{
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return isset($this->options[strtolower($name)]);
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}
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public function getOption($name)
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{
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return $this->options[strtolower($name)];
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}
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public function getOptions()
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{
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return $this->options;
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}
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private function samePartialIndex(Index $other) : bool
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{
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if ($this->hasOption('where') && $other->hasOption('where') && $this->getOption('where') === $other->getOption('where')) {
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return \true;
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}
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return !$this->hasOption('where') && !$other->hasOption('where');
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}
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private function hasSameColumnLengths(self $other) : bool
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{
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$filter = static function (?int $length) : bool {
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return $length !== null;
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};
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return array_filter($this->options['lengths'] ?? [], $filter) === array_filter($other->options['lengths'] ?? [], $filter);
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}
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}
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