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<?php |
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namespace ntentan\atiaa\descriptors; |
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class SqliteDescriptor extends \ntentan\atiaa\Descriptor |
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{ |
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protected function getColumns(&$table) |
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{ |
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$pragmaColumns = $this->driver->query("PRAGMA table_info({$table['name']})"); |
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foreach ($pragmaColumns as $column) { |
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preg_match("/(?<type>[a-zA-Z]*)(\((?<length>[0-9]+)\))*/", $column['type'], $matches); |
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$columns[] = [ |
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'name' => $column['name'], |
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'type' => $matches['type'], |
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'nulls' => $column['notnull'] == '0', |
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'default' => $column['dflt_value'], |
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'length' => isset($matches['length']) ? $matches['length'] : null |
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]; |
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} |
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return $columns; |
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} |
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protected function cleanDefaultValue($default) |
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{ |
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if(preg_match("/(')?(?<value>.*)/", $default, $matches)) { |
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return substr($matches['value'], 0, strlen($matches['value']) - 1); |
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} else { |
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return null; |
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} |
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} |
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protected function getForeignKeys(&$table) |
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{ |
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$foreignKeys = []; |
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$pragmaColumns = $this->driver->query("pragma foreign_key_list({$table['name']})"); |
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foreach ($pragmaColumns as $i => $foreignKey) { |
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$foreignKeys[] = [ |
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'name' => "{$table['name']}_{$foreignKey['table']}_{$i}_fk", |
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'schema' => $table['schema'], |
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'table' => $table['name'], |
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'column' => $foreignKey['from'], |
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'foreign_table' => $foreignKey['table'], |
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'foreign_schema' => 'main', |
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'foreign_column' => $foreignKey['to'], |
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'on_update' => $foreignKey['on_update'], |
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'on_delete' => $foreignKey['on_delete'] |
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]; |
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} |
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return $foreignKeys; |
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} |
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private function extractIndexDetails($details, $index, &$indexDetails) |
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{ |
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foreach ($details as $detail) { |
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if ($detail['name'] != '') { |
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$indexDetails[] = [ |
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'column' => $detail['name'], |
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'name' => $index['name'], |
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'schema' => $index['schema'] |
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]; |
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} |
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} |
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} |
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private function getIndexDetails($table, $unique) |
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{ |
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$indices = $this->driver->query("pragma index_list({$table['name']})"); |
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$indexDetails = []; |
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foreach ($indices as $index) { |
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if ($index['unique'] == $unique) { |
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$index['schema'] = $table['schema']; |
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$detail = $this->driver->query("pragma index_info({$index['name']})"); |
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$this->extractIndexDetails($detail, $index, $indexDetails); |
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} |
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} |
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return $indexDetails; |
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} |
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protected function getIndices(&$table) |
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{ |
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return $this->getIndexDetails($table, '0'); |
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} |
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protected function getPrimaryKey(&$table) |
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{ |
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$keyColumns = []; |
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$pragmaColumns = $this->driver->query("PRAGMA table_info({$table['name']})"); |
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foreach ($pragmaColumns as $column) { |
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if ($column['pk'] > 0) { |
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$keyColumns[] = [ |
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'order' => $column['pk'], |
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'column' => $column['name'], |
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'name' => "{$table['name']}_pk" |
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]; |
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} |
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} |
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usort($keyColumns, function ($a, $b) { |
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return $a['order'] - $b['order']; |
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}); |
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return $keyColumns; |
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} |
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protected function getSchemata() |
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{ |
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return [['name' => 'main']]; |
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} |
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protected function getTables($schema, $tables, $includeViews) |
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{ |
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View Code Duplication |
if ($includeViews) { |
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$condition = "(type = ? or type = ?)"; |
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$bind = array('table', 'view'); |
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} else { |
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$condition = "type = ?"; |
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$bind = array('table'); |
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} |
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if (count($tables) > 0) { |
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return $this->driver->quotedQuery( |
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'select name as "name", \'main\' as "schema" from sqlite_master |
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where ' . $condition . ' and name not in (\'sqlite_master\', \'sqlite_sequence\') and name in (?' . str_repeat(', ?', count($tables) - 1) . ') |
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order by name', array_merge($bind, $tables) |
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); |
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} else { |
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return $this->driver->quotedQuery( |
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'select name as "name", \'main\' as "schema" from sqlite_master |
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where name not in (\'sqlite_master\', \'sqlite_sequence\') and ' . $condition, array_merge($bind) |
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); |
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} |
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} |
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protected function getUniqueKeys(&$table) |
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{ |
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return $this->getIndexDetails($table, '1'); |
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} |
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protected function getViews(&$schema) |
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{ |
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return $this->driver->query("select 'main' as schema, name, sql as definition from sqlite_master where type = 'view'"); |
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} |
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protected function hasAutoIncrementingKey(&$table) |
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{ |
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$sql = $this->driver->query("select sql from sqlite_master where name = ?", [$table['name']]); |
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if (preg_match("/AUTOINCREMENT/", $sql[0]['sql'])) { |
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return true; |
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} else { |
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1 |
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return false; |
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} |
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} |
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} |
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ntentan /
atiaa
Loading history...
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.