UaVariableCache Class Reference
Abstract Base Class for UaVariable with a cached value. Derived from UaVariable. More...
#include <uadatavariablecache.h>
Inheritance diagram for UaVariableCache:
Collaboration diagram for UaVariableCache:
Public Member Functions | |
| UaVariableCache () | |
| virtual | ~UaVariableCache () |
| void | addCacheSignal (CacheSignal *pCacheSignal) |
| void | removeCacheSignal (CacheSignal *pCacheSignal) |
| void | signalChange () |
| OpcUa_UInt32 | signalCount () |
| OpcUa_UInt32 | getMinSamplingInterval () |
| VariableHandle * | pVariableHandle () |
| virtual void | setInvalid () |
Protected Attributes | |
| UaMutex | m_mutexSignalList |
Detailed Description
Abstract Base Class for UaVariable with a cached value. Derived from UaVariable.Constructor & Destructor Documentation
| UaVariableCache::UaVariableCache | ( | ) |
construction
| UaVariableCache::~UaVariableCache | ( | ) | [virtual] |
destruction
Member Function Documentation
| void UaVariableCache::addCacheSignal | ( | CacheSignal * | pCacheSignal | ) |
Add a cache item
- Parameters:
-
pCacheSignal a pointer to the Variable pCacheSignal.
| void UaVariableCache::removeCacheSignal | ( | CacheSignal * | pCacheSignal | ) |
Remove a cache item
- Parameters:
-
pCacheSignal a pointer to the Variable pCacheSignal.
| void UaVariableCache::signalChange | ( | ) |
Signal change to all cache items
| OpcUa_UInt32 UaVariableCache::signalCount | ( | ) |
Get a count of signal items
- Returns:
- a count of signal items
| OpcUa_UInt32 UaVariableCache::getMinSamplingInterval | ( | ) |
Get the minimum sampling interval requested
- Returns:
- the minimum sampling interval requested
| VariableHandle * UaVariableCache::pVariableHandle | ( | ) | [virtual] |
Return the VariableHandle for the DataVariable.
- Returns:
- the VariableHandle for the DataVariable.
Reimplemented from UaVariable.
| void UaVariableCache::setInvalid | ( | ) | [virtual] |
Set the variable to invalid. This method can be overwritten by a derived class to set the internal state to invalid until the object gets deleted when the reference count goes to zero. This method is used if the object should be invalidated but can not be deleted since the lifetime is controlled by the reference count.
Reimplemented from ChainEntry.
Member Data Documentation
UaMutex UaVariableCache::m_mutexSignalList [protected] |
Membervar.
The documentation for this class was generated from the following files:
- src/uaserver/uaservercpp/coremodule/uadatavariablecache.h
- src/uaserver/uaservercpp/coremodule/uadatavariablecache.cpp
