1 // Created on: 1997-08-07
2 // Created by: Jean-Louis Frenkel
3 // Copyright (c) 1997-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _CDF_Application_HeaderFile
18 #define _CDF_Application_HeaderFile
20 #include <TCollection_ExtendedString.hxx>
21 #include <PCDM_ReaderStatus.hxx>
22 #include <CDM_Application.hxx>
23 #include <CDM_CanCloseStatus.hxx>
24 #include <TColStd_SequenceOfExtendedString.hxx>
25 #include <CDF_TypeOfActivation.hxx>
26 #include <Standard_IStream.hxx>
27 #include <NCollection_IndexedDataMap.hxx>
29 class Standard_NoSuchObject;
33 class TCollection_ExtendedString;
36 class PCDM_RetrievalDriver;
37 class PCDM_StorageDriver;
39 class CDF_Application;
40 DEFINE_STANDARD_HANDLE(CDF_Application, CDM_Application)
43 class CDF_Application : public CDM_Application
49 //! plugs an application.
52 //! - for opening a Document that has been created in an application
53 //! - for opening a Document from the database
54 //! - for opening a Document from a file.
55 //! The Open methods always add the document in the session directory and
56 //! calls the virtual Activate method. The document is considered to be
57 //! opened until Close is used. To be storable, a document must be
58 //! opened by an application since the application resources are
59 //! needed to store it.
60 Standard_EXPORT static Handle(CDF_Application) Load (const Standard_GUID& aGUID);
62 //! puts the document in the current session directory
63 //! and calls the virtual method Activate on it.
64 Standard_EXPORT void Open (const Handle(CDM_Document)& aDocument);
66 Standard_EXPORT CDM_CanCloseStatus CanClose (const Handle(CDM_Document)& aDocument);
68 //! removes the document of the current session directory
69 //! and closes the document;
70 Standard_EXPORT void Close (const Handle(CDM_Document)& aDocument);
72 //! This method retrieves a document from the database.
73 //! If the Document references other documents which have
74 //! been updated, the latest version of these documents will
75 //! be used if {UseStorageConfiguration} is Standard_True.
76 //! The content of {aFolder}, {aName} and {aVersion} depends on
77 //! the Database Manager system. If the DBMS is only based on
78 //! the OS, {aFolder} is a directory and {aName} is the name of a
79 //! file. In this case the use of the syntax with {aVersion}
80 //! has no sense. For example:
82 //! Handle(CDM_Document) theDocument=myApplication->Retrieve("/home/cascade","box.dsg");
83 //! If the DBMS is EUCLID/Design Manager, {aFolder}, {aName}
84 //! have the form they have in EUCLID/Design Manager. For example:
86 //! Handle(CDM_Document) theDocument=myApplication->Retrieve("|user|cascade","box");
88 //! Since the version is not specified in this syntax, the latest wil be used.
89 //! A link is kept with the database through an instance of CDM_MetaData
90 Standard_EXPORT Handle(CDM_Document) Retrieve (const TCollection_ExtendedString& aFolder, const TCollection_ExtendedString& aName, const Standard_Boolean UseStorageConfiguration = Standard_True);
92 //! This method retrieves a document from the database.
93 //! If the Document references other documents which have
94 //! been updated, the latest version of these documents
95 //! will be used if {UseStorageConfiguration} is
96 //! Standard_True. -- If the DBMS is only based on the
97 //! OS, this syntax should not be used.
99 //! If the DBMS is EUCLID/Design Manager, {aFolder}, {aName}
100 //! and {aVersion} have the form they have in
101 //! EUCLID/Design Manager. For example:
103 //! Handle(CDM_Document) theDocument=myApplication->Retrieve("|user|cascade","box","2");
104 //! A link is kept with the database through an instance
106 Standard_EXPORT Handle(CDM_Document) Retrieve (const TCollection_ExtendedString& aFolder, const TCollection_ExtendedString& aName, const TCollection_ExtendedString& aVersion, const Standard_Boolean UseStorageConfiguration = Standard_True);
108 Standard_EXPORT PCDM_ReaderStatus CanRetrieve (const TCollection_ExtendedString& aFolder, const TCollection_ExtendedString& aName);
110 Standard_EXPORT PCDM_ReaderStatus CanRetrieve (const TCollection_ExtendedString& aFolder, const TCollection_ExtendedString& aName, const TCollection_ExtendedString& aVersion);
112 //! Checks status after Retrieve
113 PCDM_ReaderStatus GetRetrieveStatus() const { return myRetrievableStatus; }
115 //! Reads aDoc from standard SEEKABLE stream theIStream,
116 //! the stream should support SEEK fuctionality
117 Standard_EXPORT Handle(CDM_Document) Read (Standard_IStream& theIStream);
119 //! Returns instance of read driver for specified format.
121 //! Default implementation uses plugin mechanism to load reader dynamically.
122 //! For this to work, application resources should define GUID of
123 //! the plugin as value of [Format].RetrievalPlugin, and "Plugin"
124 //! resource should define name of plugin library to be loaded as
125 //! value of [GUID].Location. Plugin library should provide
126 //! method PLUGINFACTORY returning instance of the reader for the
127 //! same GUID (see Plugin_Macro.hxx).
129 //! In case if reader is not available, will raise Standard_NoSuchObject
130 //! or other exception if raised by plugin loader.
131 Standard_EXPORT virtual Handle(PCDM_Reader) ReaderFromFormat (const TCollection_ExtendedString& aFormat);
133 //! Returns instance of storage driver for specified format.
135 //! Default implementation uses plugin mechanism to load driver dynamically.
136 //! For this to work, application resources should define GUID of
137 //! the plugin as value of [Format].StoragePlugin, and "Plugin"
138 //! resource should define name of plugin library to be loaded as
139 //! value of [GUID].Location. Plugin library should provide
140 //! method PLUGINFACTORY returning instance of the reader for the
141 //! same GUID (see Plugin_Macro.hxx).
143 //! In case if driver is not available, will raise Standard_NoSuchObject
144 //! or other exception if raised by plugin loader.
145 Standard_EXPORT virtual Handle(PCDM_StorageDriver) WriterFromFormat (const TCollection_ExtendedString& aFormat);
147 //! try to retrieve a Format directly in the file or in
148 //! application resource by using extension. returns
150 Standard_EXPORT Standard_Boolean Format (const TCollection_ExtendedString& aFileName, TCollection_ExtendedString& theFormat);
152 Standard_EXPORT Standard_ExtString DefaultFolder();
154 Standard_EXPORT Standard_Boolean SetDefaultFolder (const Standard_ExtString aFolder);
156 friend class CDF_Session;
159 DEFINE_STANDARD_RTTIEXT(CDF_Application,CDM_Application)
164 Standard_EXPORT CDF_Application();
166 PCDM_ReaderStatus myRetrievableStatus;
167 NCollection_IndexedDataMap<TCollection_ExtendedString, Handle(PCDM_RetrievalDriver)> myReaders;
168 NCollection_IndexedDataMap<TCollection_ExtendedString, Handle(PCDM_StorageDriver)> myWriters;
173 //! Informs the application that aDocument has been
174 //! activated. A document is activated when it is created or
176 //! aTypeOfActivation will be:
177 //! - CDF_TOA_New if the document is a new one
178 //! (even empty or retrieved from the database for
180 //! - CDF_TOA_Unchanged if the document was already
181 //! retrieved but had no changes since the previous retrieval.
182 //! - CDF_TOA_Modified if the document was already
183 //! retrieved and modified since the previous retrieval.
184 //! You do not need to call <Activate>, but you should redefine
185 //! this method to implement application specific behavior.
186 Standard_EXPORT virtual void Activate (const Handle(CDM_Document)& aDocument, const CDF_TypeOfActivation aTypeOfActivation);
188 Standard_EXPORT Handle(CDM_Document) Retrieve (const Handle(CDM_MetaData)& aMetaData, const Standard_Boolean UseStorageConfiguration) Standard_OVERRIDE;
190 Standard_EXPORT Handle(CDM_Document) Retrieve (const Handle(CDM_MetaData)& aMetaData, const Standard_Boolean UseStorageConfiguration, const Standard_Boolean IsComponent);
192 Standard_EXPORT Standard_Integer DocumentVersion (const Handle(CDM_MetaData)& theMetaData) Standard_OVERRIDE;
194 Standard_EXPORT CDF_TypeOfActivation TypeOfActivation (const Handle(CDM_MetaData)& aMetaData);
196 Standard_EXPORT PCDM_ReaderStatus CanRetrieve (const Handle(CDM_MetaData)& aMetaData);
199 TCollection_ExtendedString myDefaultFolder;
202 #endif // _CDF_Application_HeaderFile