April 2018
Intermediate to advanced
202 pages
4h 48m
English
Content preview from Data-Centric Applications with Vaadin 8
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Getting the data
A crucial part of report generation is data gathering. Data is arguably the most important input in a report. Having good "infrastructure code" for data gathering will highly improve maintainability in report modules. In this chapter, we'll use an SQL database, since it's probably the most common kind of data store in use. This means reports are filled with data queried using SQL. Reporting doesn't require saving data, only reading. SQL queries in reports tend to have multiple lines and are sometimes generated dynamically. MyBatis seems to be an excellent choice for reporting modules. MyBatis allows query definition in XML files, which, unlike Java Strings, help with long multi-line SQL queries and dynamic query definitions. ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.