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Thread: DF 19.0 - BLOB and TEXT allocations on table global buffer

  1. #11
    Join Date
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    Stuart, FL
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    5,321

    Default Re: DF 19.0 - BLOB and TEXT allocations on table global buffer

    We have used our own DLL for accessing SQL as well as pervasive blobs long before DF had support for them. We still use our own library because it handles these things much better
    Michael Salzlechner
    StarZen Technologies, Inc
    http.://www.starzen.com

    IT Director at Balloons Everywhere

    Development Blog
    http://www.salzlechner.com/dev

    DataFlex Package Manager (aka Nuget for DataFlex)
    http://windowsdeveloper.com/dfPackage

  2. #12
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    Feb 2009
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    Brazil
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    5,446

    Default Re: DF 19.0 - BLOB and TEXT allocations on table global buffer

    Hi michael

    Is there any documentation or guidelines that you have followed to create your own drivers?
    Is there anything at high level that could de shared?
    I am not teying to reinvent the whell but there are a few areas that I would like to explore and I have no idea where and how to start.
    Thanks
    Samuel Pizarro

  3. #13
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    Feb 2009
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    2,026

    Default Re: DF 19.0 - BLOB and TEXT allocations on table global buffer

    Would be good if DAW jumped in on this one, there may be a particular technique that needs to be used. I think there are a couple of different issues involving memory allocation. A blog on BLOB's and CLOB's would be great.

  4. #14
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    Default Re: DF 19.0 - BLOB and TEXT allocations on table global buffer

    Quote Originally Posted by Samuel Pizarro View Post
    Hi michael

    Is there any documentation or guidelines that you have followed to create your own drivers?
    Is there anything at high level that could de shared?
    I am not teying to reinvent the whell but there are a few areas that I would like to explore and I have no idea where and how to start.
    Thanks
    Our first one was a long time ago for pervasive. It allowed us to create a pervasive table and then read and write blob object into the table. We also added a memory object class that we use to store and manipulate blob objects and it has connections to our richedit control as well.
    Later when we switched to SQL Server we created a DLL with the same interface for SQL Server.

    While we are still using this in some projects we have started using embedded SQL quite a while ago to read and write blobs from and to SQL Server tables.

    We are storing different types of documents (RTF, PDF, HTML, etc) as well as photos
    Michael Salzlechner
    StarZen Technologies, Inc
    http.://www.starzen.com

    IT Director at Balloons Everywhere

    Development Blog
    http://www.salzlechner.com/dev

    DataFlex Package Manager (aka Nuget for DataFlex)
    http://windowsdeveloper.com/dfPackage

  5. #15
    Join Date
    Feb 2009
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    Brazil
    Posts
    5,446

    Default Re: DF 19.0 - BLOB and TEXT allocations on table global buffer

    bump...

    It would be nice if DAW could say something about this...

    Is there anything in the plan ?

    Not yet, but we are willing to consider this request...

    Oh yeah... this is comming for DF 2021... :-)

    I would appreciate.

    Thanks
    Samuel Pizarro

  6. #16
    Join Date
    Feb 2009
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    2,026

    Default Re: DF 19.0 - BLOB and TEXT allocations on table global buffer

    +1
    Yes I'd like to know. Had battles with this before.

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