cakephp / phinx

            ->reject(function ($action) {

                return isset($this->tableCreates[$action->getTable()->getName()]);

            })

            ->each(function ($action) {

                $table = $action->getTable();

                $name = $table->getName();

                if (!isset($this->tableUpdates[$name])) {

                    $this->tableUpdates[$name] = new AlterTable($table);

                }

                $this->tableUpdates[$name]->addAction($action);

            });

    }

    /**

                    || $action instanceof ChangePrimaryKey

                    || $action instanceof ChangeComment;

            })

            ->each(function ($action) {

                $table = $action->getTable();

                $name = $table->getName();

                if (!isset($this->tableMoves[$name])) {

                    $this->tableMoves[$name] = new AlterTable($table);

                }

                $this->tableMoves[$name]->addAction($action);

            });

    }

    /**

                // so we don't wan't them here too

                return isset($this->tableCreates[$action->getTable()->getName()]);

            })

            ->each(function ($action) {

                $table = $action->getTable();

                $name = $table->getName();

                if (!isset($this->indexes[$name])) {

                    $this->indexes[$name] = new AlterTable($table);

                }

                $this->indexes[$name]->addAction($action);

            });

    }

    /**

                return $action instanceof AddForeignKey

                    || $action instanceof DropForeignKey;

            })

            ->each(function ($action) {

                $table = $action->getTable();

                $name = $table->getName();

                if (!isset($this->constraints[$name])) {

                    $this->constraints[$name] = new AlterTable($table);

                }

                $this->constraints[$name]->addAction($action);

            });

    }

}