lithium\data\Schema::merge PHP Method

merge() public method

Merges another Schema object into the current one.
public merge ( object $schema ) : void
$schema object Another `Schema` class object to be merged into the current one. If this schema contains field names that conflict with existing field names, the existing fields will not be overwritten.
return void
    public function merge($schema)
    {
        if ($this->_locked) {
            throw new RuntimeException("Schema cannot be modified.");
        }
        $this->_fields += $schema->fields();
    }