Hasso-Plattner-Institut

Prof. Dr. h.c. mult. Hasso Plattner

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Our team is giving a series of lectures and seminars with a focus on enterprise systems design and in-memory data management. Strong links to the industry ensure a close connection between theory and its implementation in the real world.

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If you are having questions regarding one of our publications, please contact the authors.

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Omniscient Debugging in Java

Getting Started

The Quid Accidit? ODB requires a recent Eclipse and a MySql database.

Installation

In Eclipse, choose "Help" -> "Install New Software..."
Click "Add" to create a new update site with the following data
- Name: Quid Accidit US
- Location: https://dl.dropboxusercontent.com/u/10830039/quid-accidit/site.xml
Install the Quid Accidit Plugin
In "Window" -> "Preferences" -> "Quid Accidit", configure the database you want to use to store execution data

Choosing the Accidit launcher

Tracing an execution

For your Eclipse project, create a new Java or JUnit run configuration
Select the ACCIDIT launcher
Run the configuration
Wait for the execution to finish
- Open the Progress View to see if the Import Job has completed
Open the "Quid Accidit" perspective
Right-click the project in the Project Explorer and choose "Select Trace"

Using the Omniscient Debugger

Use arrow keys to navigate the Trace Explorer
Right-click variables (in the Variable View) or invocations (in the Trace Explorer) to get additional features, such as dynamic slicing

Creating a slice

Right-click a value in the variable view or an entry in the trace explorer
Choose "Slice" from the context menu
Adjust the slice using the Slicing Criteria view

Omniscient Debugging in Stored Procedures

Here is a video that shows our current work on omniscient debugging for stored procedures: Video