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<?php defined('SYSPATH') OR die('No direct script access.'); |
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/** |
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* Migration. |
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*/ |
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abstract class Migration |
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{ |
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private $driver = null; |
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private $config = null; |
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private $dry_run = false; |
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abstract public function up(); |
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abstract public function down(); |
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public function __construct($config = null) |
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{ |
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$this->config = arr::merge(Kohana::$config->load('migrations')->as_array(), (array) $config); |
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$this->driver(Migration_Driver::factory(Arr::get($this->config, 'database', 'default'))); |
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} |
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/** |
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* Get or set the current driver |
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*/ |
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public function driver(Migration_Driver $driver = NULL) |
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{ |
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if ($driver !== NULL) |
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{ |
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$this->driver = $driver; |
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return $this; |
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} |
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return $this->driver; |
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} |
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public function log($message) |
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{ |
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if ($this->config['log']) |
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{ |
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call_user_func($this->config['log'], $message); |
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} |
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else |
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{ |
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echo $message."\n"; |
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ob_flush(); |
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} |
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} |
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public function dry_run($dry_run = NULL) |
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{ |
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if ($dry_run !== NULL) |
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{ |
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$this->dry_run = $dry_run; |
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return $this; |
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} |
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return $this->dry_run; |
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} |
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protected function run_driver($title, $method, $args, $will_return = FALSE) |
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{ |
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if ($title) |
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{ |
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$this->log("-- ".($this->dry_run ? "[dry-run]" : '')."$title"); |
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} |
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$start = microtime(TRUE); |
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$return = NULL; |
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if ( ! $this->dry_run) |
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{ |
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$return = call_user_func_array(array($this->driver, $method), $args); |
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} |
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$end = microtime(TRUE); |
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if ($title) |
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{ |
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$this->log(' --> '.number_format($end-$start, 4).'s'.($method == 'execute' ? ', affected rows: '.$this->driver->affected_rows() : '')); |
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} |
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return $will_return ? $return : $this; |
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} |
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public function execute($sql, $params = NULL, $display = NULL) |
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{ |
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$args = func_get_args(); |
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if ($display === NULL) |
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{ |
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$display = str_replace("\n", '↵', $sql); |
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$display = preg_replace("/[\s]+/", " ", $display); |
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$display = "execute( ".Text::limit_chars($display, 80)." )"; |
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} |
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return $this->run_driver($display, __FUNCTION__, $args); |
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} |
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public function query($sql, $params = NULL) |
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{ |
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$args = func_get_args(); |
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$display = str_replace("\n", '↵', $sql); |
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$display = preg_replace("/[\s]+/", " ", $display); |
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$display = Text::limit_chars($display, 60); |
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return $this->run_driver("query( $display )", __FUNCTION__, $args, TRUE); |
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} |
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public function quote($value) |
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{ |
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if (is_array($value)) |
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{ |
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return '('.join(', ', array_map(array($this->driver(), 'quote'), $value)).')'; |
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} |
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else |
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{ |
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return $this->driver()->quote($value); |
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} |
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} |
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/** |
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* Create Table |
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* |
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* Creates a new table |
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* |
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* $fields: |
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* |
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* Associative array containing the name of the field as a key and the |
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* value could be either a string indicating the type of the field, or an |
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* array containing the field type at the first position and any optional |
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* arguments the field might require in the remaining positions. |
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* Refer to the TYPES function for valid type arguments. |
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* Refer to the FIELD_ARGUMENTS function for valid optional arguments for a |
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* field. |
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* |
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* @code |
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* |
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* create_table ( |
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* 'blog', |
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* array ( |
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* 'title' => array ( 'string[50]', default => "The blog's title." ), |
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* 'date' => 'date', |
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* 'content' => 'text' |
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* ), |
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* ) |
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* @endcode |
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* @param string Name of the table to be created |
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* @param array |
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* @param array array of options - 'primary_key', false if not desired, not specified sets to 'id' column. Will be set to auto_increment, serial, etc. , 'if_not_exists' - bool, and all the others will be added as options to the end of the create table clause. |
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* @param bool if_not_exists |
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* @return boolean |
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*/ |
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public function create_table($table_name, $fields, $options = NULL) |
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{ |
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$args = func_get_args(); |
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return $this->run_driver("create_table( $table_name, array(".join(", ", array_keys($fields)).") )", __FUNCTION__, $args); |
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} |
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/** |
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* Drop a table |
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* |
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* @param string Name of the table |
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* @return boolean |
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*/ |
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public function drop_table($table_name) |
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{ |
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$args = func_get_args(); |
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return $this->run_driver("drop_table( $table_name )", __FUNCTION__, $args); |
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} |
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/** |
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* Change table options (passed directly to alter table) |
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* |
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* @param string $table_name |
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* @param array $options an array of options |
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* @return boolean |
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*/ |
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public function change_table($table_name, $options) |
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{ |
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$args = func_get_args(); |
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return $this->run_driver("change_table( $table_name , array(".join(", ", array_keys((array) $options))."))", __FUNCTION__, $args); |
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} |
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/** |
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* Rename a table |
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* |
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* @param string Old table name |
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* @param string New name |
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* @return boolean |
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*/ |
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public function rename_table($old_name, $new_name) |
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{ |
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$args = func_get_args(); |
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return $this->run_driver("rename_table( $old_name, $new_name )", __FUNCTION__, $args); |
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} |
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/** |
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* Add a column to a table |
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* |
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* @code |
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* add_column ( "the_table", "the_field", array('string', 'limit[25]', 'not_null') ); |
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* add_coumnn ( "the_table", "int_field", "integer" ); |
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* @endcode |
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* |
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* @param string Name of the table |
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* @param string Name of the column |
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* @param array Column arguments array |
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* @return bool |
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*/ |
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public function add_column($table_name, $column_name, $params) |
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{ |
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$args = func_get_args(); |
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return $this->run_driver("add_column( $table_name, $column_name )", __FUNCTION__, $args); |
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} |
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/** |
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* Rename a column |
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* |
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* @param string Name of the table |
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* @param string Name of the column |
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* @param string New name |
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* @return bool |
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*/ |
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public function rename_column($table_name, $column_name, $new_column_name) |
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{ |
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$args = func_get_args(); |
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return $this->run_driver("rename_column( $table_name, $column_name, $new_column_name )", __FUNCTION__, $args); |
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} |
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1 |
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/** |
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* Alter a column |
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* |
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* @param string Table name |
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* @param string Columnn ame |
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* @param array Column arguments |
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* @return bool |
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*/ |
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public function change_column($table_name, $column_name, $params) |
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{ |
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$args = func_get_args(); |
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return $this->run_driver("change_column( $table_name, $column_name )", __FUNCTION__, $args); |
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} |
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/** |
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* Remove a column from a table |
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* |
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* @param string Name of the table |
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* @param string Name of the column |
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* @return bool |
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*/ |
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public function remove_column($table_name, $column_name) |
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{ |
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$args = func_get_args(); |
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return $this->run_driver("remove_column( $table_name, $column_name )", __FUNCTION__, $args); |
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} |
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/** |
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* Add an index |
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* |
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* @param string Name of the table |
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* @param string Name of the index |
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* @param string|array Name(s) of the column(s) |
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* @param string Type of the index (unique/normal/primary) |
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* @return bool |
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*/ |
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public function add_index($table_name, $index_name, $columns, $index_type = 'normal') |
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{ |
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$args = func_get_args(); |
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return $this->run_driver("add_index( $table_name, $index_name, array(".join(', ',(array) $columns)."), $index_type )", __FUNCTION__, $args); |
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} |
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1 |
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/** |
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* Remove an index |
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* |
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* @param string Name of the table |
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* @param string Name of the index |
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* @return bool |
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*/ |
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public function remove_index($table_name, $index_name) |
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{ |
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$args = func_get_args(); |
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return $this->run_driver("remove_index( $table_name, $index_name )", __FUNCTION__, $args); |
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} |
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1 |
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} |
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This check looks from parameters that have been defined for a function or method, but which are not used in the method body.