A picture memorizing the data stored in a container (for example, in a file). A Storage_Data object represents either: More...
#include <Storage_Data.hxx>
Public Member Functions | |
| Storage_Data () | |
| Creates an empty set of data. You explicitly create a Storage_Data object when preparing the set of objects to be stored together in a container (for example, in a file). Then use the function AddRoot to add persistent objects to the set of data. A Storage_Data object is also returned by the Read function of a Storage_Schema storage/retrieval algorithm. Use the functions NumberOfRoots and Roots to find the roots which were stored in the read container. More... | |
| Storage_Error | ErrorStatus () const |
| Returns Storage_VSOk if. More... | |
| void | ClearErrorStatus () |
| Clears the error status positioned either by: More... | |
| TCollection_AsciiString | ErrorStatusExtension () const |
| TCollection_AsciiString | CreationDate () const |
| return the creation date More... | |
| TCollection_AsciiString | StorageVersion () const |
| return the Storage package version More... | |
| TCollection_AsciiString | SchemaVersion () const |
| get the version of the schema More... | |
| TCollection_AsciiString | SchemaName () const |
| get the schema's name More... | |
| void | SetApplicationVersion (const TCollection_AsciiString &aVersion) |
| set the version of the application More... | |
| TCollection_AsciiString | ApplicationVersion () const |
| get the version of the application More... | |
| void | SetApplicationName (const TCollection_ExtendedString &aName) |
| set the name of the application More... | |
| TCollection_ExtendedString | ApplicationName () const |
| get the name of the application More... | |
| void | SetDataType (const TCollection_ExtendedString &aType) |
| set the data type More... | |
| TCollection_ExtendedString | DataType () const |
| returns data type More... | |
| void | AddToUserInfo (const TCollection_AsciiString &anInfo) |
| add <theUserInfo> to the user informations More... | |
| const TColStd_SequenceOfAsciiString & | UserInfo () const |
| return the user informations More... | |
| void | AddToComments (const TCollection_ExtendedString &aComment) |
| add <theUserInfo> to the user informations More... | |
| const TColStd_SequenceOfExtendedString & | Comments () const |
| return the user informations More... | |
| Standard_Integer | NumberOfObjects () const |
| the the number of persistent objects Return: the number of persistent objects readed More... | |
| Standard_Integer | NumberOfRoots () const |
| Returns the number of root objects in this set of data. More... | |
| void | AddRoot (const Handle< Standard_Persistent > &anObject) const |
| add a persistent root to write. the name of the root is a driver reference number. More... | |
| void | AddRoot (const TCollection_AsciiString &aName, const Handle< Standard_Persistent > &anObject) const |
| Adds the root anObject to this set of data. The name of the root is aName if given; if not, it will be a reference number assigned by the driver when writing the set of data into the container. When naming the roots, it is easier to retrieve objects by significant references rather than by references without any semantic values. More... | |
| void | RemoveRoot (const TCollection_AsciiString &aName) |
| Removes from this set of data the root object named aName. Warning Nothing is done if there is no root object whose name is aName in this set of data. More... | |
| Handle< Storage_HSeqOfRoot > | Roots () const |
| Returns the roots of this set of data in a sequence. More... | |
| Handle< Storage_Root > | Find (const TCollection_AsciiString &aName) const |
| Gives the root object whose name is aName in this set of data. The returned object is a Storage_Root object, from which the object it encapsulates may be extracted. Warning A null handle is returned if there is no root object whose name is aName in this set of data. More... | |
| Standard_Boolean | IsRoot (const TCollection_AsciiString &aName) const |
| returns Standard_True if <me> contains a root named <aName> More... | |
| Standard_Integer | NumberOfTypes () const |
| Returns the number of types of objects used in this set of data. More... | |
| Standard_Boolean | IsType (const TCollection_AsciiString &aName) const |
| Returns true if this set of data contains an object of type aName. Persistent objects from this set of data must have types which are recognized by the Storage_Schema algorithm used to store or retrieve them. More... | |
| Handle< TColStd_HSequenceOfAsciiString > | Types () const |
| Gives the list of types of objects used in this set of data in a sequence. More... | |
 Public Member Functions inherited from MMgt_TShared | |
| virtual void | Delete () const |
| Memory deallocator for transient classes. More... | |
| Public Member Functions inherited from Standard_Transient | |
| Standard_Transient () | |
| Empty constructor. More... | |
| Standard_Transient (const Standard_Transient &) | |
| Copy constructor – does nothing. More... | |
| Standard_Transient & | operator= (const Standard_Transient &) |
| Assignment operator, needed to avoid copying reference counter. More... | |
| virtual | ~Standard_Transient () |
| Destructor must be virtual. More... | |
| virtual const Handle_Standard_Type & | DynamicType () const |
| Returns a type information object about this object. More... | |
| Standard_Boolean | IsInstance (const Handle_Standard_Type &theType) const |
| Returns a true value if this is an instance of Type. More... | |
| Standard_Boolean | IsInstance (const Standard_CString theTypeName) const |
| Returns a true value if this is an instance of TypeName. More... | |
| Standard_Boolean | IsKind (const Handle_Standard_Type &theType) const |
| Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More... | |
| Standard_Boolean | IsKind (const Standard_CString theTypeName) const |
| Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More... | |
| virtual Handle_Standard_Transient | This () const |
| Returns a Handle which references this object. Must never be called to objects created in stack. More... | |
| Standard_Integer | GetRefCount () const |
| Get the reference counter of this object. More... | |
Detailed Description
A picture memorizing the data stored in a container (for example, in a file). A Storage_Data object represents either:
- persistent data to be written into a container, or
- persistent data which are read from a container. A Storage_Data object is used in both the storage and retrieval operations:
- Storage mechanism: create an empty Storage_Data object, then add successively persistent objects (roots) to be stored using the function AddRoot. When the set of data is complete, write it to a container using the function Write in your Storage_Schema storage/retrieval algorithm.
- Retrieval mechanism: a Storage_Data object is returned by the Read function from your Storage_Schema storage/retrieval algorithm. Use the functions NumberOfRoots and Roots to find the roots which were stored in the read container. The roots of a Storage_Data object may share references on objects. The shared internal references of a Storage_Data object are maintained by the storage/retrieval mechanism. Note: References shared by objects which are contained in two distinct Storage_Data objects are not maintained by the storage/retrieval mechanism: external references are not supported by Storage_Schema algorithm
Constructor & Destructor Documentation
| Storage_Data::Storage_Data | ( | ) |
Creates an empty set of data. You explicitly create a Storage_Data object when preparing the set of objects to be stored together in a container (for example, in a file). Then use the function AddRoot to add persistent objects to the set of data. A Storage_Data object is also returned by the Read function of a Storage_Schema storage/retrieval algorithm. Use the functions NumberOfRoots and Roots to find the roots which were stored in the read container.
Member Function Documentation
| void Storage_Data::AddRoot | ( | const Handle< Standard_Persistent > & | anObject | ) | const |
add a persistent root to write. the name of the root is a driver reference number.
| void Storage_Data::AddRoot | ( | const TCollection_AsciiString & | aName, |
| const Handle< Standard_Persistent > & | anObject | ||
| ) | const |
Adds the root anObject to this set of data. The name of the root is aName if given; if not, it will be a reference number assigned by the driver when writing the set of data into the container. When naming the roots, it is easier to retrieve objects by significant references rather than by references without any semantic values.
| void Storage_Data::AddToComments | ( | const TCollection_ExtendedString & | aComment | ) |
add <theUserInfo> to the user informations
| void Storage_Data::AddToUserInfo | ( | const TCollection_AsciiString & | anInfo | ) |
add <theUserInfo> to the user informations
| TCollection_ExtendedString Storage_Data::ApplicationName | ( | ) | const |
get the name of the application
| TCollection_AsciiString Storage_Data::ApplicationVersion | ( | ) | const |
get the version of the application
| void Storage_Data::ClearErrorStatus | ( | ) |
Clears the error status positioned either by:
- the last storage operation performed with the Read function, or
- the last retrieval operation performed with the Write function by a Storage_Schema algorithm, on this set of data. This error status may be read by the function ErrorStatus.
| const TColStd_SequenceOfExtendedString& Storage_Data::Comments | ( | ) | const |
return the user informations
| TCollection_AsciiString Storage_Data::CreationDate | ( | ) | const |
return the creation date
| TCollection_ExtendedString Storage_Data::DataType | ( | ) | const |
returns data type
| Storage_Error Storage_Data::ErrorStatus | ( | ) | const |
Returns Storage_VSOk if.
- the last storage operation performed with the function Read, or
- the last retrieval operation performed with the function Write by a Storage_Schema algorithm, on this set of data was successful. If the storage or retrieval operation was not performed, the returned error status indicates the reason why the operation failed. The algorithm stops its analysis at the first detected error
| TCollection_AsciiString Storage_Data::ErrorStatusExtension | ( | ) | const |
| Handle< Storage_Root > Storage_Data::Find | ( | const TCollection_AsciiString & | aName | ) | const |
Gives the root object whose name is aName in this set of data. The returned object is a Storage_Root object, from which the object it encapsulates may be extracted. Warning A null handle is returned if there is no root object whose name is aName in this set of data.
| Standard_Boolean Storage_Data::IsRoot | ( | const TCollection_AsciiString & | aName | ) | const |
returns Standard_True if <me> contains a root named <aName>
| Standard_Boolean Storage_Data::IsType | ( | const TCollection_AsciiString & | aName | ) | const |
Returns true if this set of data contains an object of type aName. Persistent objects from this set of data must have types which are recognized by the Storage_Schema algorithm used to store or retrieve them.
| Standard_Integer Storage_Data::NumberOfObjects | ( | ) | const |
the the number of persistent objects Return: the number of persistent objects readed
| Standard_Integer Storage_Data::NumberOfRoots | ( | ) | const |
Returns the number of root objects in this set of data.
- When preparing a storage operation, the result is the number of roots inserted into this set of data with the function AddRoot.
- When retrieving an object, the result is the number of roots stored in the read container. Use the Roots function to get these roots in a sequence.
| Standard_Integer Storage_Data::NumberOfTypes | ( | ) | const |
Returns the number of types of objects used in this set of data.
| void Storage_Data::RemoveRoot | ( | const TCollection_AsciiString & | aName | ) |
Removes from this set of data the root object named aName. Warning Nothing is done if there is no root object whose name is aName in this set of data.
| Handle< Storage_HSeqOfRoot > Storage_Data::Roots | ( | ) | const |
Returns the roots of this set of data in a sequence.
- When preparing a storage operation, the sequence contains the roots inserted into this set of data with the function AddRoot.
- When retrieving an object, the sequence contains the roots stored in the container read.
- An empty sequence is returned if there is no root in this set of data.
| TCollection_AsciiString Storage_Data::SchemaName | ( | ) | const |
get the schema's name
| TCollection_AsciiString Storage_Data::SchemaVersion | ( | ) | const |
get the version of the schema
| void Storage_Data::SetApplicationName | ( | const TCollection_ExtendedString & | aName | ) |
set the name of the application
| void Storage_Data::SetApplicationVersion | ( | const TCollection_AsciiString & | aVersion | ) |
set the version of the application
| void Storage_Data::SetDataType | ( | const TCollection_ExtendedString & | aType | ) |
set the data type
| TCollection_AsciiString Storage_Data::StorageVersion | ( | ) | const |
return the Storage package version
| Handle< TColStd_HSequenceOfAsciiString > Storage_Data::Types | ( | ) | const |
Gives the list of types of objects used in this set of data in a sequence.
| const TColStd_SequenceOfAsciiString& Storage_Data::UserInfo | ( | ) | const |
return the user informations
The documentation for this class was generated from the following file:
