SQL Queries on Smalltalk Objects





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Published on Jul 17, 2015

mié, 15 de julio, 11:0011:30

First Name: James
Last Name: Foster
Email where you can always be reached: James.Foster@GemTalkSystems.com
Title: SQL Queries on Smalltalk Objects
Type: Talk

Slides: http://www.slideshare.net/esug/sql-qu...

Object-oriented programming (OOP) languages are very popular and relational database management systems (RDBMSs) are likewise common, but there is a well-known "impedance mismatch" when they interact. Much work has gone into bridging that gap by allowing objects from an OOP application to be saved in an RDBMS (see GLORP). On the other hand, comparatively little effort has gone into presenting objects from an OOP environment or application directly to RDBMS tools. This functionality would be useful because many RDBMS tools exist that simplify the end-user's exploration of data, but that capability is not available until the data has been stored in the RDBMS. This functionality is one of the most common high-level feature-requests for GemStone/S by those who are evaluating it as a database (“Can I use my familiar query tools?”).

In this talk we will discuss a project to create a library that parses SQL queries (using PetitParser) and evaluates Smalltalk code that builds a result sets to be returned to the external tools.


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