Michael-
see below.
Steve
MICHAEL LUCHTAN wrote:
>Hello all:
>A couple of q's for the FAQ:
>I'm trying to get started using the perl object layer. I wonder if anyone
>has any documentation, like a short description of the object, followed be
>the methods that are available, and the parameters required by each
>method. I can't seem to find this sort of documentation anywhere. Where
>can I find this type of documentation?
>
There isn't any up-to-date documentation. The (perl) object layer
consists of five pieces:
- core classes that represent a: database, database handle, database
table database row. These utilize the Perl DBI package. Find these in
$PROJECT_HOME/GUS/ObjRelP/lib/perl
- objects that represent each GUS table and view, and rows in them.
Their API is pretty simple: setters and getters for attributes, get/add
child methods; get/set parent methods. Find these in
$PROJECT_HOME/GUS/Model/lib/perl/*/.
- a superclass for all row objects. Look here to find methods that
are shared by all row objects. It is:
$PROJECT_HOME/GUS/Model/lib/perl/GusRow.pm
- a code generator that automatically generates the GUS table and row
objects by reading the info in the TableInfo table. Find this in Find
these in $PROJECT_HOME/GUS/ObjRelP/lib/perl/generator
- "hand-edited" objects: these augment the automatically generated
methods with advanced "business logic". Find these in
$PROJECT_HOME/GUS/Model/lib/perl/DoTS/*.pm.man
>
>Much of the code that I have seen used on the web makes use of perl
>objects from GUS2 code. Is there a reason that
>Objects::dbiperl_utils::DbiDatabase is used instead of
>GUS::ObjRelP::DbiDatabase?
>
>
Yes, that was the old location of DbiDatabase in gus2 code. It has
been repackaged into GUS::ObjRelP::DbiDatabase to conform to the new Gus
3 cvs structure, etc.
>Does anyone have a simple 5-10 line example code for how to login to a
>database and submit a query, printing the results?
>
>
For basic queries, with no associated logic, we use sqlplus on the unix
command line.
To see how to do something like this in a script, look at
$PROJECT_HOME/GUS/Common/bin/dumpSequencesFromTable.pl. It issues an
SQL query directly, not using the object layer. To see the object layer
in action, take a look at plugins.
>Thanks in advance:
>
>Michael Luchtan
>http://www.cs.uga.edu/~luchtan
>
>
>
>
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