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Satoshi Munakata, Takashi Ishio, Katsuro Inoue. Graduate School of Infomation Science and Technology, Osaka University. Simply Visualizing an Execution Trace. Focusing on Each Pair of Object Groups. Class A. Class B. Call Relation Among Groups.

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slide1

Satoshi Munakata, Takashi Ishio, Katsuro Inoue

Graduate School of Infomation Science and Technology, Osaka University

Simply Visualizing an Execution Trace

Focusing on Each Pair of Object Groups

Class A

Class B

Call Relation Among Groups

OGAN & Amida website is available at http://sel.ist.osaka-u.ac.jp/~ishio/amida/.

Call Relation Among Objects

Whole Sequence Diagram

Simplified Sequence Diagrams

Classifying Objects

by

Their Behavior

A1

B1

A2

B2

too complicated…

A2

B2

B1

A1

Objects in a Calendar Program

<Use>

CalendarMonth

<Use>

CalendarMonth

DateCell

<Used>

ScheduleList

Scheduler

<Use>

CalendarFrame

CalendarMonth

DateCell

RegisterDialog

<Used>

FixedSchedule

ScheduleList

Scheduler

<Use>

DateCellRenderer

MonthTableModel

<Use>

CalendarFrame

DateCellRenderer

MonthTableModel

<Used>

CalendarDate

<Use>

DateCellRenderer

MonthTableModel

<Used>

CalendarDate

<Use>

MonthTableModel

Method Call

1 to 1 Method Call

OGAN

Visualizing Object Interaction Scenarios

Based on Dynamic Interaction Context

A sequence diagram simply extracted from an execution trace is too complicated for developers to understand interactions between a pair of classes because of the large

number of objects and method involved.

OGAN classifies objects into groups based on their dynamic interaction context and visualizes interaction scenarios for each pair of object groups as a set of simplified

sequence diagrams.

Developers can compare these diagrams side-by-side to more easily understand

interactions between classes.

Example: We analyze the interaction between two classes representing a date:

a GUI classDateCell and

a data model class CalendarDate.

OGAN classifies objects into groups

if and only if

Use(o1) = Use(o2)

∧ Used(o1) = Used(o2)

where Use(obj) is a set of classes calling a method of obj, Used(obj) is a set of classes called by obj.

OGAN randomly selects a pair of seed objects that directly interact with each other from the pair of groups. OGAN extracts method call and return events directly related to the

seed objects, and generates a sequence diagram.