dds::sub::status::ViewState Class Reference

Class to hold sample ViewState information. More...

#include "DataState.hpp"

Inherits std::bitset< Bits >.

Public Types
typedef std::bitset< OMG_DDS_STATE_BIT_COUNT >	MaskType

Public Member Functions
	ViewState ()
	ViewState (const MaskType &src)
	ViewState (const ViewState &src)
	ViewState (uint32_t m)

Static Public Member Functions
static const ViewState	any ()
static const ViewState	new_view ()
static const ViewState	not_new_view ()

Detailed Description

Class to hold sample ViewState information.

For each instance (identified by the key), the Data Distribution Service internally maintains a view_state relative to each DataReader. The ViewSate can either be NEW_VIEW_STATE or NOT_NEW_VIEW_STATE.

• new_view
  • Either this is the first time that the DataReader has ever accessed samples of that instance, or else that the DataReader has accessed previous samples of the instance, but the instance has since been reborn (i.e. become not-alive and then alive again).
• not_new_view
  • The DataReader has already accessed samples of the same instance and that the instance has not been reborn since.

See also

SampleInfo for more information

Definition at line 146 of file DataState.hpp.

Member Typedef Documentation

MaskType

typedef std::bitset<OMG_DDS_STATE_BIT_COUNT> dds::sub::status::ViewState::MaskType

Convenience typedef for std::bitset<OMG_DDS_STATE_BIT_COUNT>.

Definition at line 152 of file DataState.hpp.

Constructor & Destructor Documentation

ViewState() [1/4]

dds::sub::status::ViewState::ViewState

(

)

Construct a ViewState with default MaskType.

ViewState() [2/4]

dds::sub::status::ViewState::ViewState ( uint32_t  m )

explicit

Construct a ViewState with MaskType of i.

Parameters

m	the MaskType

ViewState() [3/4]

dds::sub::status::ViewState::ViewState

(

const ViewState &

src

)

Copy constructor.

Construct a ViewState with existing ViewState.

Parameters

src	the ViewState to copy from

ViewState() [4/4]

dds::sub::status::ViewState::ViewState

(

const MaskType &

src

)

Construct a ViewState with existing MaskType.

Parameters

src	the MaskType to copy from

Member Function Documentation

any()

static const ViewState dds::sub::status::ViewState::any ( )

inlinestatic

Get any ViewState.

Either the sample has already been seen or not seen.

Returns

the any ViewState

new_view()

static const ViewState dds::sub::status::ViewState::new_view ( )

inlinestatic

Get the NEW_VIEW_STATE.

new_view

• Either this is the first time that the DataReader has ever accessed samples of that instance, or else that the DataReader has accessed previous samples of the instance, but the instance has since been reborn (i.e. become not-alive and then alive again).

Returns

the new_view ViewState

not_new_view()

static const ViewState dds::sub::status::ViewState::not_new_view ( )

inlinestatic

Get the NOT_NEW_VIEW_STATE.

not_new_view

• The DataReader has already accessed samples of the same instance and that the instance has not been reborn since.

Returns

the not_new_view ViewState

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

• dds/sub/status/DataState.hpp