Utilizes Jmesa feature as an underlying mechanism so serves managing representation of data in tabular form, filter,sort, paginate, export your. – The Export represents the export type that the user invoked. What you need to do is check to see if an export is being done. If so then just let JMesa output to the response. There are no filters to set up. You can find out.

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The key is in the variable resultswhich now holds the entire text of the table generated by the JMesa TableFacade when we called its render method.

It’s still better than scriptlets or custom tag libraries both of which were, to be sure, phenomenal in their timebut it’s an undigestible mass, and even if I do step through it line by line and understand what it does, I’m still left with just a table.

We let Spring inject the HelloWorldService, which we use to retrieve a set of items to display.

User-Friendly Format Column We continue by introducing a more user-friendly value into the format column. Asynchronous and Event-Based Application Design. This means we won’t have to hard-code a part of the image URL.

If you would like the JMesa jar file in the Maven repositories I have decided to leave it up to the community to finish the work started. TableFacade is going to send itself messages passed as parameters in the request more on this in a moment.

Running the Table With JMesa

If your Locale is not currently supported you should consider taking some time to create a messages file and send it to me. The JMesa default is astounding, but no default is ever exactly like you want it.

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If it is exported, the results will be written directly to the output stream of the response; if not, they’ll be rendered as a string containing our HTML table: Believe it or not, implementing each of these features will be quite easy! Now I don’t have to like tables: For instance to create an HTML table with every feature available can be accomplished in four lines xeport code:.

Before we can get to JMesa, though, we’ll need a few things: On the very first page of the JMesa web site we find four lines of code that we can appropriate and refashion for a Spring controller:.

For instance to create an HTML table with every feature available can be accomplished in four lines of code: Columns are typically sorted by property value, but we just added a column that corresponds to no property, that displays the output of the toString method. Whew, that was a mouthful! In fact, we’ll learn even more if we put this page in a context.

Fortunately, the JMesa folks have already worked that out. Per user request the javadocs are now online as well! Normally, we’d get them from a persistence service; for now, we’ll just create them in memory:. Unfortunately, the HtmlCellRenderer sub-interface that expoet with JMesa has no method for adding attributes. The ability to customize is critical. I just updated one of our internal sites to use the feature throughout and it occurred to me that this may be a hidden feature to many developers.

Of course, we need instances of this domain object. On the very first page of the JMesa web site we find four lines of code that we can appropriate and refashion for a Spring controller: This is just one more branch on the decision tree we saw in the previous controller: One more change in jmesa-servlet. Extending AbstractContextSupport gets us JavaBean property methods for these objects just a convenience; I could have implemented the interface ContextSupport, but then I would have had to write the property methods myself.


They look more natural to me this way; your mileage may vary. The simplicity and unusual syntax of the latter code come courtesy of the jQuery Ajax library, which is thoughtfully used by JMesa: Putting It All Together We’ll refactor out nmesa code once more in writing a Factory to encapsulate building our customized table, starting with an abstract class: Installation of the Eclipse Project Installing the Eclipse project is not difficult; the included Ant build file and these instructions assume Tomcat as the deployment jmmesa I’m using version 6.

Opinions expressed by DZone contributors are their own. There is some support for Maven in that you can pull the jar from my site. There are two parts nmesa the solution: For page organization, not so much. To demonstrate, we’ll use the select at the top of the form to change the number of rows displayed to 16, sort by first name ascending and last name descending by clicking on the first column header once and the second twiceand mouse over the third row to see the highlighting:.

Grails Plugin: Jmesa Plugin

I can program them in Java and not worry about them on a display JSP. NET tutorials C programming. Since this is functionality I use a lot, let’s design it for reuse, refactoring out reusable code into one class, expogt code tailored to this project into another. The WebContext provides us with the servlet context path, again letting us avoid hard-coding the image URL: