Rogue Wave JViews TGO Sample: Tree Component - Performance

Description

This sample shows the performance of a Rogue Wave JViews TGO tree component that uses predefined business classes.

How to Use the Sample

Run the sample from the command line and wait for the performance benchmarks to be displayed on the console after its computation has completed

How to Run the Sample as an Application

This sample can be run as an application. The installation directory contains an executable JAR file, tree-performance.jar, that allows you to execute the sample with a double click from a file browser. Note that if you are using Internet Explorer, you can open the installation directory and execute the JAR file from the browser. This technique may not work in other Web browsers.

Alternatively, you can run the sample application from the command line. First check that the Ant utility is properly configured. If not, see the instructions on how to configure Ant for Rogue Wave JViews.

Then, go to the installation directory of the sample and type:

ant run

Topics Covered

• Time to fill the data source
• Time to get a first display
• Total time from the start of the sample to the end of the display
• Time to expand the first node
• Time to update an attribute in all the objects and display the results
• Time to clear the data source and display the results

Detailed Description

This sample measures the performance of a JTGO tree component that displays predefined business objects. The specific code of this sample is in the benchIt method of performance.Main. It contains the following steps:

• Time to fill the data source.
  The data source is filled in the fillDataSource method.
  By default, the data source is populated before the tree component is connected to it. You can modify this behavior by changing the fillDataSourceFirst Boolean attribute.
  By default, 20 root objects with 500 children each are created in the data source. You can modify these numbers by changing the numberOfParents and numberOfChildren integer attributes.
  
• Time to get a first display.
  The class DisplayTest is used to measure the time of the first display, that is, the time between the end of the data source filling and the display of the root objects.
  
• Total time from the start of the sample to the end of the display.
  This time is computed in the DisplayTest class.
  
• Time to expand the first object.
  The class ExpandTest is used to measure the time to expand the first object.
  
• Time to update an attribute in all the objects and display the results.
  The object state of each object is set.
  
• Time to clear the data source and display the results.

Installation Directory

The Tree Component - Performance sample is installed here.

Classes Involved

• ilog.tgo.IltSystem

  The class that initializes a JViews TGO application.

• ilog.tgo.datasource.IltDefaultDataSource

  The default datasource implementation.

• ilog.cpl.IlpTree

  The tree component.

Source Files

• performance.Main

  The entry point of the sample.