/[cvs]/nfo/perl/libs/Data/README.html

Diff of /nfo/perl/libs/Data/README.html

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-revision 1.4 by joko,
Fri Nov 29 04:48:23 2002 UTC
+revision 1.5 by joko,
Wed Dec 11 06:53:19 2002 UTC
 Line 24
          <LI><A HREF="#requirements">REQUIREMENTS</A></LI>
          <LI><A HREF="#description">DESCRIPTION</A></LI>
+         <UL>
+                 <LI><A HREF="#data::storage">Data::Storage</A></LI>
+                 <LI><A HREF="#why">Why?</A></LI>
+                 <LI><A HREF="#what else">What else?</A></LI>
+         </UL>
          <LI><A HREF="#authors / copyright">AUTHORS / COPYRIGHT</A></LI>
          <LI><A HREF="#acknowledgements">ACKNOWLEDGEMENTS</A></LI>
          <LI><A HREF="#support / warranty">SUPPORT / WARRANTY</A></LI>
-Line 45
+Line 52
  <HR>
  <P>
  <H1><A NAME="name">NAME</A></H1>
- <P>Data::Storage - Interface for accessing various Storage implementations for Perl in an independent way</P>
+ <PRE>
+   Data::Storage - Interface for accessing various Storage implementations for Perl in an independent way</PRE>
  <P>
  <HR>
  <H1><A NAME="aims">AIMS</A></H1>
-Line 167
+Line 175
    }</PRE>
  <P>
  <H2><A NAME="note">NOTE</A></H2>
- <P>This module heavily relies on DBI and Tangram, but adds a lot of additional bugs and quirks.
+ <PRE>
- Please look at their documentation and/or this code for additional information.</P>
+   This module heavily relies on DBI and Tangram, but adds a lot of additional bugs and quirks.
+   Please look at their documentation and/or this code for additional information.</PRE>
  <P>
  <HR>
  <H1><A NAME="requirements">REQUIREMENTS</A></H1>
-Line 185 
 Please look at their documentation and/o
+Line 194 
 Please look at their documentation and/o
  <P>
  <HR>
  <H1><A NAME="description">DESCRIPTION</A></H1>
- <P>Data::Storage is a module for accessing various ``data structures'' stored inside
+ <P>
- various ``data containers''. It sits on top of DBI and/or Tangram.</P>
+ <H2><A NAME="data::storage">Data::Storage</A></H2>
+ <PRE>
+   Data::Storage is a module for accessing various &quot;data structures / kinds of structured data&quot; stored inside
+   various &quot;data containers&quot;.
+   We tried to use the AdapterPattern (<A HREF="http://c2.com/cgi/wiki?AdapterPattern">http://c2.com/cgi/wiki?AdapterPattern</A>) to implement a wrapper-layer
+   around core CPAN modules (Tangram, DBI).</PRE>
+ <P>
+ <H2><A NAME="why">Why?</A></H2>
+ <PRE>
+   You will get a better code-structure (not bad for later maintenance) in growing Perl code projects,
+   especially when using multiple database connections at the same time.
+   You will be able to switch between different _kinds_ of implementations used for storing data.
+   Your code will use the very same API to access these storage layers.
+       ... implementation has to be changed for now
+   Maybe you will be able to switch &quot;on-the-fly&quot; without changing any bits in code in the future....
+       ... but that's not the focus</PRE>
+ <P>
+ <H2><A NAME="what else">What else?</A></H2>
+ <PRE>
+   Having this, we were able to do implement a generic data synchronization module more easy,
+   please look at Data::Transfer.</PRE>
  <P>
  <HR>
  <H1><A NAME="authors / copyright">AUTHORS / COPYRIGHT</A></H1>
- <P>The Data::Storage module is Copyright (c) 2002 Andreas Motl.
+ <PRE>
- All rights reserved.</P>
+   The Data::Storage module is Copyright (c) 2002 Andreas Motl.
- <P>You may distribute it under the terms of either the GNU General Public
+   All rights reserved.
- License or the Artistic License, as specified in the Perl README file.</P>
+   You may distribute it under the terms of either the GNU General Public
+   License or the Artistic License, as specified in the Perl README file.</PRE>
  <P>
  <HR>
  <H1><A NAME="acknowledgements">ACKNOWLEDGEMENTS</A></H1>
- <P>Larry Wall for Perl, Tim Bunce for DBI, Jean-Louis Leroy for Tangram and Set::Object,
+ <PRE>
- Sam Vilain for Class::Tangram, Jochen Wiedmann and Jeff Zucker for DBD::CSV and related,
+   Larry Wall for Perl, Tim Bunce for DBI, Jean-Louis Leroy for Tangram and Set::Object,
- Adam Spiers for MySQL::Diff and all contributors.</P>
+   Sam Vilain for Class::Tangram, Jochen Wiedmann and Jeff Zucker for DBD::CSV &amp; Co.,
+   Adam Spiers for MySQL::Diff and all contributors.</PRE>
  <P>
  <HR>
  <H1><A NAME="support / warranty">SUPPORT / WARRANTY</A></H1>
- <P>Data::Storage is free software. IT COMES WITHOUT WARRANTY OF ANY KIND.</P>
+ <PRE>
+   Data::Storage is free software. IT COMES WITHOUT WARRANTY OF ANY KIND.</PRE>
  <P>
  <HR>
  <H1><A NAME="todo">TODO</A></H1>
-Line 271 
 Adam Spiers for MySQL::Diff and all cont
+Line 303 
 Adam Spiers for MySQL::Diff and all cont
      -  .wab - files (Windows Address Book)
      -  .pst - files (Outlook Post Storage?)
      -  XML (e.g. via XML::Simple?)
-   - Move to t3, look at InCASE</PRE>
+   - Move to t3, look at InCASE
+   - some kind of security layer for methods/objects
+     - acls (stored via tangram/ldap?) for functions, methods and objects (entity- &amp; data!?)
+     - where are the hooks needed then?
+       - is Data::Storage &amp; Co. okay, or do we have to touch the innards of DBI and/or Tangram?
+       - an attempt to start could be:
+          - 'sub getACLByObjectId($id, $context)'
+          - 'sub getACLByMethodname($id, $context)'
+          - 'sub getACLByName($id, $context)'
+             ( would require a kinda registry to look up these very names pointing to arbitrary locations (code, data, ...) )</PRE>
  <P>
  <H3><A NAME="links / references">LINKS / REFERENCES</A></H3>
  <PRE>

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