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 WebContext provides us with the servlet context path, again letting us avoid hard-coding the image URL: But recently I discovered an open-source Java library called JMesa that provides another way. 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’ve got automatic conversion tools to convert C to VB.
Running the Table With JMesa
The results show only the row containing Einstein’s name in the last name column. Unfortunately, the HtmlCellRenderer sub-interface that comes with JMesa has no method for adding attributes. This makes possible many amazing features. It contains a preference called “html.
This is just one more branch on the decision tree we saw in the previous controller: Asynchronous and Event-Based Application Design. As we have already seen, a CellEditor is needed to change a cell’s displayed value. The cell itself, as opposed to its contents, is rendered by the interface CellRenderer. It provides color striping of table rows and onMouseOver row highlighting.
How did we get them? In addition there has been a sighting of JMesa out on Tech Blog. This class takes an HTTP request in its constructor: I prefer using icons to buttons saying “Edit” and “Delete”, as it reduces the amount of textual information the user must process. Learn more about Kotlin. They look more natural to me this way; your mileage may vary. This is our opportunity to introduce CoreContext and WebContext, two important classes that plug our code into the JMesa infrastructure. The controller, of course, needs to interpret this new request correctly.
We supply it with the set of items and with which JavaBean property of those items we want displayed in each column.
We let Spring inject the HelloWorldService, which we use to retrieve a set of items to display. This has a lot of code note the abstract methodsin part because I know I usually want edit and delete columns.
Grails Plugin: Jmesa Plugin
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: More details are on jkesa Messages page.
Conclusion Now I don’t have to like tables: Cell contents are produced by implementations of the CellEditor interface. Creating tables with JMesa is very easy. What would work would be to use the align and valign attributes of the cell.
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 jmeas. Many more lines of code will be needed to enable them to do useful things like paginating through long lists of items, sorting by column values, and the like.
I don’t dislike tables per se. 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. The BeanUtils is a core library in JMesa and the 1.
It was tested with Tomcat 6, but should work with any servlet container. Don’t get me wrong: Installation of the Eclipse Project Installing the Jmesz project is not difficult; the included Ant build file and these instructions assume Tomcat as the deployment target I’m using version 6.
NET and Jmeza programmers. Alternatively just tell us what you think! User-Friendly Format Column We continue by introducing a more user-friendly value into the format column. The WebContext provides us with the servlet context path, again letting us avoid hard-coding the image URL:. The API for Software: There are jmesw parts to the solution: JMesa requires JDK 1.
Over a million developers have joined DZone. Some code in the project has been refactored from the way it appears in the article. Installation instructions will be found at the end of this article.