Chart DSL

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Introduction

Vaadin

Vaadin is a web application framework for Java. In contrast to Javascript libraries and browser-plugin based solutions, Vaadin features a complete stack that includes a robust server-side programming model as well as client-side development tools based on GWT and HTML5.

More information: https://vaadin.com/home

jqPlot

jqPlot (http://www.jqplot.com) is a plotting and charting plugin for the jQuery Javascript framework and is dual licensed under the MIT and GPL version 2 licenses. jqPlot produces line, bar and pie charts with many features.

dCharts

dCharts is Vaadin add-on for creating charts and is a wrapper for jqPlot library. For now dCharts support:

• Bar Charts
  

  Figure 01: Sample
• Block Charts
  

  Figure 02: Sample
• Bubble Charts
  

  Figure 03: Sample
• Donut Charts
  

  Figure 04: Sample
• Line Charts
  

  Figure 05: Sample
• Meter Gauge Charts
  

  Figure 06: Sample
• OHLC, HLC and Candlestick Charts
  

  Figure 07: Sample
• Pie Charts
  

  Figure 08: Sample
• Pyramid Charts
  

  Figure 09: Sample
• Waterfall Charts
  

  Figure 10: Sample

dCharts support following events:

• mouse enter
• mouse leave
• click
• right click

To enable it in OSBP it was neccessary to add OSGi capabilities to the addon.

Chart DSL

Chart DSL generates the vaddin dCharts ui.

The main semantic elements of the ChartDSL are:

• package - the root element that contains all the other elements. A model can contain multiple packages.
• import declarations - used to import external models or even Java classes.
• chart - define the chart configurations, e.g. chart type, polling time, datamart details, etc.
• as bar/line/pie/donut/bubble/gauge/tree - define the type for this chart .
• using datamart - define the data source details for this chart , e.g. row/column configurations, legend details and tooltips configurations.

Syntax

Package

► Syntax:

package <package name>  {
    import <import models/class name>
     ...

    chart... [using datamart <datamart name>
    {
         ...
    }]
...
}

Chart

► Syntax:

chart <char name> [described by <discription>] as 
    <chart type>
    [polling <polling time number>]
    [using datamart <datamart name> {
           ...
    }]

Generate a <chartame>+Chart.java file, in which a java class named <chartname>+Chart extended from java class AbstractHybridVaaclipseView is defined. In this class, chart and chart configurations are defined.

For the tree chart, generate explicit a <chartname>+<treetype>+JsChart.java file, a <chartname>+<treetype>+JsState.java file and a Treemap+<chartname>+<treetype>.js file.

The methods collapse(), expand(), change(), update(), click() or posistion() are defined for CollapseTree or TreeMap.

polling time sets chartRefresher.setRefreshInterval as polling time number * 1000 ms in createView(). It is only for bpm.