Class: DB::MySQL::Native::Result

Inherits:
FFI::Pointer
  • Object
show all
Defined in:
lib/db/mysql/native/result.rb

Instance Method Summary collapse

Constructor Details

#initialize(connection, address) ⇒ Result

Returns a new instance of Result.



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# File 'lib/db/mysql/native/result.rb', line 98

def initialize(connection, address)
	super(address)
	
	@connection = connection
	@fields = nil
end

Instance Method Details

#each ⇒ Object 



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# File 'lib/db/mysql/native/result.rb', line 132

def each
	row = FFI::MemoryPointer.new(:pointer)
	field_count = self.field_count
	
	while true
		status = Native.mysql_fetch_row_start(row, self)
		
		while status != 0
			@connection.wait_for(status)
			
			status = Native.mysql_fetch_row_cont(row, self, status)
		end
		
		pointer = row.read_pointer
		
		if pointer.null?
			break
		else
			yield pointer.get_array_of_string(0, field_count)
		end
	end
	
	@connection.check_error!("Reading recordset")
end

#field_count ⇒ Object 



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# File 'lib/db/mysql/native/result.rb', line 105

def field_count
	Native.mysql_num_fields(self)
end

#field_names ⇒ Object Also known as: keys 



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# File 'lib/db/mysql/native/result.rb', line 121

def field_names
	fields.map(&:name)
end

#fields ⇒ Object 



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# File 'lib/db/mysql/native/result.rb', line 109

def fields
	unless @fields
		pointer = Native.mysql_fetch_fields(self)
		
		@fields = field_count.times.map do |index|
			Field.new(pointer +  index * Field.size)
		end
	end
	
	return @fields
end

#row_count ⇒ Object Also known as: count 



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# File 'lib/db/mysql/native/result.rb', line 125

def row_count
	Native.mysql_num_rows(self)
end

#to_a ⇒ Object 



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# File 'lib/db/mysql/native/result.rb', line 157

def to_a
	rows = []
	
	self.each do |row|
		rows << row
	end
	
	return rows
end