API:FireDAC.Phys.MongoDBWrapper.TMongoOID
Delphi
TMongoOID = class(TMongoObject)
C++
class PASCALIMPLEMENTATION TMongoOID : public TMongoObject
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| class | public | FireDAC.Phys.MongoDBWrapper.pas FireDAC.Phys.MongoDBWrapper.hpp |
FireDAC.Phys.MongoDBWrapper | FireDAC.Phys.MongoDBWrapper |
Description
A base class for all MongoDB API wrapping classes.
FireDAC.Phys.MongoDBWrapper.TMongoOID inherits from FireDAC.Phys.MongoDBWrapper.TMongoObject. All content below this line refers to FireDAC.Phys.MongoDBWrapper.TMongoObject.
A base class for all MongoDB API wrapping classes.
TMongoObject is an abstract class that is responsible for the life cycle of a MongoDB API handle. This class provides references to client libraries, the environment and error objects.
The MongoDB API handle may be assigned to this object:
- by derived classes, which directly assign the handle to the private variable FHandle;
- by the Create constructor: in this case, this object will own the handle;
- by assigning a handle to the Handle property: in this case, the caller owns the handle.
When this object owns the handle, the MongoDB API handle will be automatically destroyed in the following cases:
- when you call the object destructor;
- by assigning any appropriate value to the Handle property, when this object owns the handle.
Otherwise, the handle must be destroyed manually.