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- <?php
- namespace Doctrine\DBAL\Schema;
- use Doctrine\DBAL\Platforms\AbstractPlatform;
- class Index extends AbstractAsset implements Constraint
- {
-
- protected $_columns;
-
- protected $_isUnique = false;
-
- protected $_isPrimary = false;
-
- protected $_flags = array();
-
- public function __construct($indexName, array $columns, $isUnique = false, $isPrimary = false, array $flags = array())
- {
- $isUnique = ($isPrimary)?true:$isUnique;
- $this->_setName($indexName);
- $this->_isUnique = $isUnique;
- $this->_isPrimary = $isPrimary;
- foreach ($columns as $column) {
- $this->_addColumn($column);
- }
- foreach ($flags as $flag) {
- $this->addFlag($flag);
- }
- }
-
- protected function _addColumn($column)
- {
- if(is_string($column)) {
- $this->_columns[$column] = new Identifier($column);
- } else {
- throw new \InvalidArgumentException("Expecting a string as Index Column");
- }
- }
-
- public function getColumns()
- {
- return array_keys($this->_columns);
- }
-
- public function getQuotedColumns(AbstractPlatform $platform)
- {
- $columns = array();
- foreach ($this->_columns as $column) {
- $columns[] = $column->getQuotedName($platform);
- }
- return $columns;
- }
-
- public function getUnquotedColumns()
- {
- return array_map(array($this, 'trimQuotes'), $this->getColumns());
- }
-
- public function isSimpleIndex()
- {
- return !$this->_isPrimary && !$this->_isUnique;
- }
-
- public function isUnique()
- {
- return $this->_isUnique;
- }
-
- public function isPrimary()
- {
- return $this->_isPrimary;
- }
-
- public function hasColumnAtPosition($columnName, $pos = 0)
- {
- $columnName = $this->trimQuotes(strtolower($columnName));
- $indexColumns = array_map('strtolower', $this->getUnquotedColumns());
- return array_search($columnName, $indexColumns) === $pos;
- }
-
- public function spansColumns(array $columnNames)
- {
- $columns = $this->getColumns();
- $numberOfColumns = count($columns);
- $sameColumns = true;
- for ($i = 0; $i < $numberOfColumns; $i++) {
- if ( ! isset($columnNames[$i]) || $this->trimQuotes(strtolower($columns[$i])) !== $this->trimQuotes(strtolower($columnNames[$i]))) {
- $sameColumns = false;
- }
- }
- return $sameColumns;
- }
-
- public function isFullfilledBy(Index $other)
- {
-
-
- if (count($other->getColumns()) != count($this->getColumns())) {
- return false;
- }
-
- $sameColumns = $this->spansColumns($other->getColumns());
- if ($sameColumns) {
- if ( ! $this->isUnique() && !$this->isPrimary()) {
-
-
-
-
- return true;
- } else if ($other->isPrimary() != $this->isPrimary()) {
- return false;
- } else if ($other->isUnique() != $this->isUnique()) {
- return false;
- }
- return true;
- }
- return false;
- }
-
- public function overrules(Index $other)
- {
- if ($other->isPrimary()) {
- return false;
- } else if ($this->isSimpleIndex() && $other->isUnique()) {
- return false;
- }
- if ($this->spansColumns($other->getColumns()) && ($this->isPrimary() || $this->isUnique())) {
- return true;
- }
- return false;
- }
-
- public function getFlags()
- {
- return array_keys($this->_flags);
- }
-
- public function addFlag($flag)
- {
- $this->flags[strtolower($flag)] = true;
- return $this;
- }
-
- public function hasFlag($flag)
- {
- return isset($this->flags[strtolower($flag)]);
- }
-
- public function removeFlag($flag)
- {
- unset($this->flags[strtolower($flag)]);
- }
- }
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