[kepler-dev] Re: [seek-dev] What I have working so far......

Jing Tao tao at nceas.ucsb.edu
Mon Aug 30 10:49:36 PDT 2004


Hi, Rod:

I am working the code to make the sql engine more configurable and hope it 
will be finished in this Wednesday. Hopelly we can integate our code after 
that.

Thanks.

Jing

On Fri, 27 Aug 2004, Rod Spears wrote:

> Date: Fri, 27 Aug 2004 12:32:13 -0500
> From: Rod Spears <rod at rodspears.com>
> To: kepler-dev at ecoinformatics.org, seek-dev <seek-dev at ecoinformatics.org>
> Subject: [seek-dev] What I have working so far......
> 
> I created a new Actor (within the XML Definition) named Eml200DS, so as 
> not to conflict with the existing actor. It uses Eml200DataSource.java
> 
> The new object has two "String" attributes, one for the Schema and one 
> for the Query (the Strings hold the XML definitions of the objects)
> 
> When I create on in the palette it look like this:
> 
> Note: No output ports
> 
> Then I right-click and select "Look Inside" and I get the QueryBuilder 
> with the Schema preloaded from the "schemaDef" attribute:
> 
> 
> Then I select "File" and then "Close" and I get this Dialog:
> 
> 
> 
> I press apply and it send the change to Eml200DataSource which in turn 
> clears all the ports, creates a new trigger input port and then creates 
> all the output ports from the QueryDef XML:
> 
> 
> 
> Now I repeat the step, and the QB is preloaded with both the schema and 
> my previous Query definition. I add another "column" name, then close 
> and apply and I get this:
> 
> 
> 
> If I right-click and select "Configure" I get this which show the 
> contents of the attributes:
> 
> 
> 
> So now I have a Eml200DS object with a schema and a query. It is ready 
> to be executed.
> 
> To execute, Jing will take the QueryDef object created from the XML and 
> then ask for the SQL string and call the hSql engine. The we should be 
> on our way.
> 
> The schema can come from a Resultset or from a generic Schema Definition.
> 
> Rod
> 
> 
> 
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> 

-- 
Jing Tao
National Center for Ecological
Analysis and Synthesis (NCEAS)
735 State St. Suite 204
Santa Barbara, CA 93101




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