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<?php namespace Xethron\MigrationsGenerator\Generators; |
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class IndexGenerator { |
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/** |
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* @var array |
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*/ |
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protected $indexes; |
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/** |
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* @var array |
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*/ |
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protected $multiFieldIndexes; |
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/** |
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* @var bool |
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*/ |
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private $ignoreIndexNames; |
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/** |
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* @param string $table Table Name |
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* @param \Doctrine\DBAL\Schema\AbstractSchemaManager $schema |
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* @param bool $ignoreIndexNames |
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*/ |
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public function __construct($table, $schema, $ignoreIndexNames) |
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{ |
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$this->indexes = array(); |
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$this->multiFieldIndexes = array(); |
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$this->ignoreIndexNames = $ignoreIndexNames; |
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$indexes = $schema->listTableIndexes( $table ); |
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foreach ( $indexes as $index ) { |
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$indexArray = $this->indexToArray($table, $index); |
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if ( count( $indexArray['columns'] ) == 1 ) { |
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$columnName = $indexArray['columns'][0]; |
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$this->indexes[ $columnName ] = (object) $indexArray; |
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} else { |
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$this->multiFieldIndexes[] = (object) $indexArray; |
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} |
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} |
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} |
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/** |
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* @param string $table |
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* @param \Doctrine\DBAL\Schema\Index $index |
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* @return array |
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*/ |
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protected function indexToArray($table, $index) |
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{ |
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if ( $index->isPrimary() ) { |
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$type = 'primary'; |
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} elseif ( $index->isUnique() ) { |
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$type = 'unique'; |
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} else { |
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$type = 'index'; |
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} |
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$array = ['type' => $type, 'name' => null, 'columns' => $index->getColumns()]; |
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if ( ! $this->ignoreIndexNames and ! $this->isDefaultIndexName($table, $index->getName(), $type, $index->getColumns())) { |
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// Sent Index name to exclude spaces |
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$array['name'] = str_replace(' ', '', $index->getName()); |
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} |
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return $array; |
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} |
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/** |
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* @param string $table Table Name |
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* @param string $type Index Type |
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* @param string|array $columns Column Names |
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* @return string |
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*/ |
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protected function getDefaultIndexName( $table, $type, $columns ) |
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{ |
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if ($type=='primary') { |
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return 'PRIMARY'; |
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} |
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if ( is_array( $columns ) ) { |
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$columns = implode( '_', $columns ); |
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} |
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return $table .'_'. $columns .'_'. $type; |
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} |
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/** |
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* @param string $table Table Name |
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* @param string $name Current Name |
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* @param string $type Index Type |
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* @param string|array $columns Column Names |
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* @return bool |
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*/ |
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protected function isDefaultIndexName( $table, $name, $type, $columns ) |
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{ |
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return $name == $this->getDefaultIndexName( $table, $type, $columns ); |
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} |
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/** |
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* @param string $name |
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* @return null|object |
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*/ |
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public function getIndex($name) |
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{ |
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if ( isset( $this->indexes[ $name ] ) ) { |
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return (object) $this->indexes[ $name ]; |
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} |
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return null; |
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} |
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/** |
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* @return null|object |
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*/ |
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public function getMultiFieldIndexes() |
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{ |
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return $this->multiFieldIndexes; |
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} |
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} |
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