View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0025681 | Community | OCCT:Application Framework | public | 2014-12-31 17:59 | 2020-10-16 16:31 |
| Reporter | Vico Liang | Assigned To | bugmaster | ||
| Priority | low | Severity | feature | ||
| Status | closed | Resolution | fixed | ||
| Target Version | 7.5.0 | ||||
| Summary | 0025681: Application Framework - Unicode data storage in XML or binary format | ||||
| Description | It's impossible to save and then restore Unicode data into XML or Binary format document before OCCT6.8.0. The Unicode presentation is TCollection_ExtendedString, so the changes might be updating TCollection_ExtendedString storage and retrieve drivers. | ||||
| Steps To Reproduce | Not applicable | ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
| related to | 0030773 | closed | Open CASCADE | Application Framework - To allow to inherit existing attributes to reuse persistence mechanisms | |
| related to | 0025683 | assigned | vro | Community | Application Framework - No entrance to construct a LDOMBasicString from TCollection_ExtendedString |
| child of | 0022484 | closed | bugmaster | Open CASCADE | UNICODE characters support. |
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Hello Vico. A unicode string may be saved in XML or binaries file formats of OCAF document. See please XmlMDataStd_NameDriver and BinMDataStd_NameDriver, for example. These drivers exist since a very early version of Open CASCADE (much earlier than 6.8.0). |
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Dear vro, I'm using class TCollection_ExtendedString in my applicaton, and i don't want to use class TDataStd_Name since TDataStd_Name is just for naming purpose in my application. I see there is driver for TDataStd_Name. Now my problem is that i want to store TCollection_ExtendedString in xml or binary. TCollection_ExtendedString is a basis data type of OCCT, i think it should provide an attribute and for it (like TDataStd_ExtendedString) and then provide drivers. |
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I understand your desire and might propose the following: 1. You might use TDataStd_Comment - it keeps a unicode string too and it is very similar to TDataStd_Name. 2. Open CASCADE is an open source library. You might develop a TDataStd_ExtendedString attribute yourself with persistent-transient drivers for XML and Binary file formats. What do you think? Any questions are welcome! |
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Dear vro, Though TDataStd_Comment can store unicode string, it have its own application semantics, and it should just be used for comment rather than as a common string. Yes, Open CASCADE is an open source library. OCCT is becoming better and better. So the reason i report this is just to want to make occt better. I just reminder that OCCT need an attribute TDataStd_ExtendedString. |
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I'm curious, why there is TDataStd_AsciiString, but without TDataStd_ExtendedString? It's so nature to provice attributes for these two kinds of string. |
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I think it is a good idea to make a new attribute and extend OCAF. So, you are welcome with your contribution to Open CASCADE! |
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Dear vro, You made a right desision to make a new attribute to extend OCAF. The implementation should be better done from OCCT team. |
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You are welcome to contact our sales or consulting departments please at http://www.opencascade.com. |
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Mikhail, could you please comment if new attribute TDataStd_GenericExtString (0030773) can be bound to this issue, or there is still no general driver for Extended Strings? Vico, while OCAF relies intensively on TCollection_ExtendedString, this is rather for historical reasons. TCollection_AsciiString is now expected to store UTF-8, so that there is no need using TCollection_ExtendedString for storing UNICODE symbols. |
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Yes, since coming OCCT version 7.5.0 it is possible to create your own attribute, similar (by fields) to existing ones. You may just inherit TDataStd_GenericExtString attribute in your application, for an example, in a same way as in it done in TDataStd_Name, with new unique GUID. In this case you don't need to create new drivers for this attribute, or change the schema, or change OCCT: for XML and binary formats it will be stored/restored automatically. |
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Thanks for the effort occt made. The two options TCollection_AsciiString and TDataStd_GenericExtString both satisfy my need. Please close this. Thanks again. |
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Dear bugmaster, Please, close this issue since no fix is needed. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2014-12-31 17:59 | Vico Liang | New Issue | |
| 2014-12-31 17:59 | Vico Liang | Assigned To | => szy |
| 2015-03-05 11:25 |
|
Priority | normal => low |
| 2015-03-05 11:25 |
|
Target Version | 6.9.0 => 6.7.1 |
| 2015-03-05 11:40 |
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Target Version | 6.7.1 => 7.1.0 |
| 2015-12-30 16:05 |
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Assigned To | szy => vro |
| 2015-12-30 16:05 |
|
Status | new => assigned |
| 2016-02-09 11:58 | vro | Note Added: 0050516 | |
| 2016-02-09 11:59 | vro | Assigned To | vro => Vico Liang |
| 2016-02-25 14:19 | vro | Status | assigned => feedback |
| 2016-04-12 11:40 | Vico Liang | Note Added: 0052597 | |
| 2016-04-12 11:40 | Vico Liang | Assigned To | Vico Liang => vro |
| 2016-04-13 05:04 | Vico Liang | Status | feedback => assigned |
| 2016-04-14 09:17 | vro | Note Added: 0052699 | |
| 2016-04-14 11:00 | Vico Liang | Note Added: 0052701 | |
| 2016-04-14 11:05 | Vico Liang | Note Added: 0052702 | |
| 2016-04-14 12:02 | vro | Note Added: 0052709 | |
| 2016-04-14 13:43 | Vico Liang | Note Added: 0052712 | |
| 2016-04-14 14:10 | vro | Note Added: 0052714 | |
| 2016-11-03 17:21 |
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Target Version | 7.1.0 => 7.2.0 |
| 2017-07-27 09:43 |
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Target Version | 7.2.0 => 7.4.0 |
| 2019-07-10 09:01 |
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Target Version | 7.4.0 => 7.5.0 |
| 2020-09-11 15:32 |
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Target Version | 7.5.0 => 7.6.0 |
| 2020-10-14 11:43 | kgv | Relationship added | related to 0025683 |
| 2020-10-14 11:47 | kgv | Summary | Unicode data storage in XML or binary format. => Application Framework - Unicode data storage in XML or binary format |
| 2020-10-14 11:47 | kgv | Relationship added | child of 0022484 |
| 2020-10-14 11:55 | kgv | Relationship added | related to 0030773 |
| 2020-10-14 11:59 | kgv | Note Added: 0095956 | |
| 2020-10-14 11:59 | kgv | Assigned To | vro => mpv |
| 2020-10-14 11:59 | kgv | Status | assigned => feedback |
| 2020-10-14 12:00 | kgv | Target Version | 7.6.0 => 7.5.0 |
| 2020-10-14 13:46 |
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Assigned To | mpv => Vico Liang |
| 2020-10-14 13:51 |
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Note Added: 0095971 | |
| 2020-10-14 14:14 | Vico Liang | Note Added: 0095972 | |
| 2020-10-14 14:15 | Vico Liang | Note Edited: 0095972 | |
| 2020-10-14 14:18 |
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Assigned To | Vico Liang => mpv |
| 2020-10-14 14:18 |
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Status | feedback => resolved |
| 2020-10-14 14:18 |
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Steps to Reproduce Updated | |
| 2020-10-14 14:18 |
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Assigned To | mpv => bugmaster |
| 2020-10-14 14:19 |
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Note Added: 0095973 | |
| 2020-10-14 14:22 | kgv | Status | resolved => feedback |
| 2020-10-14 14:22 | kgv | Resolution | open => fixed |
| 2020-10-16 16:31 | bugmaster | Status | feedback => closed |
