Towards A Metrics Suite for Aspect-Oriented Software Jianjun Zhao Department of Computer Science and Engineering Fukuoka Institute of Technology 3-30-1 Wajiro-Higashi, Higashi-ku, Fukuoka 811-0295, Japan
[email protected]
ABSTRACT
! 1.
INTRODUCTION
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ce0 public class Point { s1 protected int x, y; me2 public Point(int _x, int _y) { s3 x = _x; s4 y = _y; } me5 public int getX() { s6 return x; } me7 public int getY() { s8 return y; } me9 public void setX(int _x) { s10 x = _x; } me11 public void setY(int _y) { s12 y = _y; } me13 public void printPosition() { s14 System.out.println("Point at("+x+","+y+")"); } me15 public static void main(String[] args) { s16 Point p = new Point(1,1); s17 p.setX(2); s18 p.setY(2); } } ce19 class Shadow { s20 public static final int offset = 10; s21 public int x, y; me22 s23 s24 me25 s26
Shadow(int x, int y) { this.x = x; this.y = y; public void printPosition() { System.outprintln("Shadow at ("+x+","+y+")"); } }
ase27 aspect PointShadowProtocol { s28 private int shadowCount = 0; me29 public static int getShadowCount() { s30 return PointShadowProtocol. aspectOf().shadowCount; } s31 private Shadow Point.shadow; me32 public static void associate(Point p, Shadow s){ s33 p.shadow = s; } me34 public static Shadow getShadow(Point p) { s35 return p.shadow; } pe36
pointcut setting(int x, int y, Point p): args(x,y) && call(Point.new(int,int)); pointcut settingX(Point p): target(p) && call(void Point.setX(int)); pointcut settingY(Point p): target(p) && call(void Point.setY(int));
pe37 pe38
ae39
after(int x, int y, Point p) returning : setting(x, y, p) { Shadow s = new Shadow(x,y); associate(p,s); shadowCount++; } after(Point p): settingX(p) { Shadow s = new getShadow(p); s.x = p.getX() + Shadow.offset; p.printPosition(); s.printPosition(); } after(Point p): settingY(p) { Shadow s = getShadow(p); s.y = p.getY() + Shadow.offset; p.printPosition(); s.printPosition();
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2.
ASPECT-ORIENTED PROGRAMMING WITH ASPECTJ
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3.
A DEPENDENCE MODEL FOR ASPECTORIENTED SOFTWARE
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! , 3.1 Module-Level Dependence Graphs
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ase27 control dependence arc data dependence arc aspect membership arc
me29
s28 pe36
parameter-in, parameter-out, or call arc
f5_in
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pe38
s31
s30 me32
f3_in f4_in
f3_out s33 me34
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f3_in s35
f1_in f3_in
f2_in
f3_in f3_in
s40
s41
s42 s44
s45
s46
s47
a1_in a1_in
a2_in
f1_in: x=x_in a1_in: p_in=p
a1_in
s49
s50
s51
s52
a1_in
a2_in
f2_in: y=y_in a2_in: s_in=s
f3_in: p=p_in
f3_out: p_out=p
f4_in: s=s_in
f5_in: shadowCount=shadowCount_in
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3.3 System-Level Dependence Graph
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3.3.1 Representing Interactive Aspects and Classes
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control dependence arc me15 data dependence arc parameter-in, parameter-out, or call arc
coordination arc
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s18
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me5
a3_in
a1_in
a3_in
a2_in
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s6
me2
me11
me9
me7
f4_in f3_in
f3_in
f1_out
f2_out
f2_in
f2_in
f1_in f4_in
s8 s12
f2_out f2_in
s10
f1_in
f1_out s3
s4 s28
ae48
ae39
ae43
f5_in f5_in f1_in
s49 f2_in
s41
s40
f5_in
s44
s42
s45
s46
s50
s51
s52
s47
a5_in
a5_in a5_in a6_in
a5_in a6_in
me22 me13
me32
f1_in
me34 f2_in
f7_out
f6_in
f5_in
f1_in: x=x_in, f5_in: p=p_in, f8_in: s=s_in,
s24
f6_out
f5_out s33
me25 f1_in
f2_in f8_in
f7_in
f1_in
f5_in
f2_in s14
s26
s35
s23
f1_out: x_out=x, f2_in: y=y_in, f2_out: y_out=y, f3_in: _x=_x_in, f3_out: _x_out=_x, f4_in: _y=_y_in, f4_out: _y_out=_y, f5_out: p_out=p, f6_in: this.x=this.x_in, f6_out: this.x_out=this.x, f7_in: this.y=this.y_in, f7_out: this.y_out=this.y, f8_out: = s_out=s, a1_in: _x_in=1, a2_in: _y_in=1, a3_in: x_in=2, a4_in: y_in=2, a5_in: p_in=p, a6_in: s_in=s
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3.3.2 Aspect-Oriented System Dependence Graph
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4.
METRICS FOR ASPECT-ORIENTED SOFTWARE
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