RTI Connext Modern C++ API Version 7.2.0
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Configures a dds::core::Entity that acts as factory of other entities. More...
#include <dds/core/policy/CorePolicy.hpp>
Public Member Functions | |
TEntityFactory () | |
Default policy. More... | |
TEntityFactory (bool the_auto_enable) | |
Specifies whether the entity acting as a factory automatically enables the instances it creates. More... | |
TEntityFactory & | autoenable_created_entities (bool on) |
Specifies whether the entity acting as a factory automatically enables the instances it creates. More... | |
bool | autoenable_created_entities () const |
Getter (see setter with the same name) More... | |
Static Public Member Functions | |
static TEntityFactory | AutoEnable () |
Creates EntityFactory(true) More... | |
static TEntityFactory | ManuallyEnable () |
Creates EntityFactory(false) More... | |
Configures a dds::core::Entity that acts as factory of other entities.
This policy controls the behavior of the dds::core::Entity as a factory for other entities. It controls whether or not child entities are created in the enabled state.
RTI Connext uses a factory design pattern for creating DDS Entities. That is, a parent entity must be used to create child entities. DomainParticipants create Topics, Publishers and Subscribers. Publishers create DataWriters. Subscribers create DataReaders.
By default, a child object is enabled upon creation (initialized and may be actively used). With this QoS policy, a child object can be created in a disabled state. A disabled entity is only partially initialized and cannot be used until the entity is enabled. Note: an entity can only be enabled; it cannot be disabled after it has been enabled.
This QoS policy is useful to synchronize the initialization of DDS Entities. For example, when a dds::sub::DataReader is created in an enabled state, its existence is immediately propagated for discovery and the dds::sub::DataReader object's listener called as soon as data is received. The initialization process for an application may extend beyond the creation of the dds::sub::DataReader, and thus, it may not be desireable for the dds::sub::DataReader to start to receive or process any data until the initialization process is complete. So by creating readers in a disabled state, your application can make sure that no data is received until the rest of the application initialization is complete, and at that time, enable the them.
Note: if an entity is disabled, then all of the child entities it creates will be disabled too, regardless of the setting of this QoS policy. However, enabling a disabled entity will enable all of its children if this QoS policy is set to automatically enable children entities.
This policy is mutable. A change in the policy affects only the entities created after the change, not any previously created entities.
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inline |
Default policy.
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inlineexplicit |
Specifies whether the entity acting as a factory automatically enables the instances it creates.
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inline |
Specifies whether the entity acting as a factory automatically enables the instances it creates.
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inline |
Getter (see setter with the same name)
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inlinestatic |
Creates EntityFactory(true)
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inlinestatic |
Creates EntityFactory(false)