Kea  2.3.5-git
isc::dns::rdata::in::A Class Reference

#include <rdataclass.h>

+ Inheritance diagram for isc::dns::rdata::in::A:

Public Member Functions

 A (const std::string &type_str)
 
 A (isc::util::InputBuffer &buffer, size_t rdata_len)
 
 A (const A &other)
 
 A (MasterLexer &lexer, const Name *name, MasterLoader::Options options, MasterLoaderCallbacks &callbacks)
 
virtual int compare (const Rdata &other) const
 Compare two instances of Rdata. More...
 
virtual std::string toText () const
 Convert an Rdata to a string. More...
 
virtual void toWire (isc::util::OutputBuffer &buffer) const
 Render the Rdata in the wire format into a buffer. More...
 
virtual void toWire (AbstractMessageRenderer &renderer) const
 Render the Rdata in the wire format into a MessageRenderer object. More...
 
- Public Member Functions inherited from isc::dns::rdata::Rdata
virtual uint16_t getLength () const
 Get the wire format length of an Rdata. More...
 
virtual ~Rdata ()
 The destructor. More...
 

Additional Inherited Members

- Protected Member Functions inherited from isc::dns::rdata::Rdata
 Rdata ()
 The default constructor. More...
 

Detailed Description

Definition at line 2466 of file rdataclass.h.

Constructor & Destructor Documentation

◆ A() [1/4]

isc::dns::rdata::in::A::A ( const std::string &  type_str)
explicit

◆ A() [2/4]

isc::dns::rdata::in::A::A ( isc::util::InputBuffer buffer,
size_t  rdata_len 
)

◆ A() [3/4]

isc::dns::rdata::in::A::A ( const A other)

◆ A() [4/4]

isc::dns::rdata::in::A::A ( MasterLexer lexer,
const Name name,
MasterLoader::Options  options,
MasterLoaderCallbacks callbacks 
)

Member Function Documentation

◆ compare()

virtual int isc::dns::rdata::in::A::compare ( const Rdata other) const
virtual

Compare two instances of Rdata.

This method compares this and the other Rdata objects in terms of the DNSSEC sorting order as defined in RFC4034, and returns the result as an integer.

This is a pure virtual method without the definition; the actual comparison logic is specific to each derived concrete class and should be explicitly defined in the derived class.

Specific implementations of this method must confirm that this and the other are objects of the same concrete derived class of Rdata. This is normally done by dynamic_cast in the implementation. It also means if the assumption isn't met an exception of class std::bad_cast will be thrown.

Here is an implementation choice: instead of relying on dynamic_cast, we could first convert the data into wire-format and compare the pair as opaque data. This would be more polymorphic, but might involve significant overhead, especially for a large size of RDATA.

Parameters
otherthe right-hand operand to compare against.
Returns
< 0 if this would be sorted before other.
0 if this is identical to other in terms of sorting order.
> 0 if this would be sorted after other.

Implements isc::dns::rdata::Rdata.

◆ toText()

virtual std::string isc::dns::rdata::in::A::toText ( ) const
virtual

Convert an Rdata to a string.

This method returns a std::string object representing the Rdata.

This is a pure virtual method without the definition; the actual representation is specific to each derived concrete class and should be explicitly defined in the derived class.

Returns
A string representation of Rdata.

Implements isc::dns::rdata::Rdata.

◆ toWire() [1/2]

virtual void isc::dns::rdata::in::A::toWire ( isc::util::OutputBuffer buffer) const
virtual

Render the Rdata in the wire format into a buffer.

This is a pure virtual method without the definition; the actual conversion is specific to each derived concrete class and should be explicitly defined in the derived class.

Parameters
bufferAn output buffer to store the wire data.

Implements isc::dns::rdata::Rdata.

◆ toWire() [2/2]

virtual void isc::dns::rdata::in::A::toWire ( AbstractMessageRenderer renderer) const
virtual

Render the Rdata in the wire format into a MessageRenderer object.

This is a pure virtual method without the definition; the actual conversion is specific to each derived concrete class and should be explicitly defined in the derived class.

Parameters
rendererDNS message rendering context that encapsulates the output buffer in which the Rdata is to be stored.

Implements isc::dns::rdata::Rdata.


The documentation for this class was generated from the following file: