设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 10232|回复: 0

[求助] 问jheatbugs-2001-03-28中某些代码

[复制链接]
发表于 2008-5-25 02:15:22 | 显示全部楼层 |阅读模式
5仿真币
HeatbugModelSwarm中buildActions部分,3个try分别是做什么?查了下refbook-java-2.2,解释太简略,还是不懂,高手指点,谢谢!代码如下:
, W, S4 f- q. r  D, Q7 i; Q$ A% E/ }0 Z8 Z
public Object buildActions () {
+ o" M" R- c# k  w: O* L  h7 i    super.buildActions();
3 h- `1 k+ b* J) c! K5 r   
/ O7 `1 A  b: t2 Q: r& n    // Create the list of simulation actions. We put these in& [. _2 W8 v9 `/ d% o8 c* N
    // an action group, because we want these actions to be. h: y1 I$ |* w3 i
    // executed in a specific order, but these steps should9 D( O: j, z/ t5 Y4 O9 V! J
    // take no (simulated) time. The M(foo) means "The message8 E# ^( D6 J8 O3 C
    // called <foo>". You can send a message To a particular# o! f7 f6 f& F! H4 {$ w$ F* c
    // object, or ForEach object in a collection.5 E: F0 v5 z4 ?6 W8 _
        
( f# D, d. A) v& w! m! [    // Note we update the heatspace in two phases: first run
6 l3 t) s4 a2 g3 L0 K, \$ Y8 l( x    // diffusion, then run "updateWorld" to actually enact the( V0 X' _+ N" e; z& ~
    // changes the heatbugs have made. The ordering here is
; ^% x8 S/ C6 e* z6 x7 ?+ q9 ?    // significant!6 s) @3 O5 G8 e- I/ c& a& m
        
+ X0 |+ q1 S& |    // Note also, that with the additional
+ \1 {/ [! ~3 ?  L    // `randomizeHeatbugUpdateOrder' Boolean flag we can# H$ }, F  x1 D
    // randomize the order in which the bugs actually run( \% u) i7 O( n* ^
    // their step rule.  This has the effect of removing any
  ]- u6 x$ s7 z- ~1 h$ ?; ~/ j    // systematic bias in the iteration throught the heatbug
5 A' _7 z# H( b& \    // list from timestep to timestep4 W# q6 v& \' ^  W
        2 ?% [1 ?5 K+ U4 V  I; p
    // By default, all `createActionForEach' modelActions have, ^2 E5 N0 ]7 N/ ?# ?+ f
    // a default order of `Sequential', which means that the8 ]. ~/ Q3 g9 [8 M8 R6 G
    // order of iteration through the `heatbugList' will be* n6 K8 i' i. f( c  \6 r" I
    // identical (assuming the list order is not changed
7 n8 P3 N  a- `/ |* \1 _" H: i    // indirectly by some other process).9 v: K: Z, `5 k7 T
   
/ C0 \' ~9 ]$ _& R1 _    modelActions = new ActionGroupImpl (getZone ());; r! [6 q( K/ L& n6 h
- P( P- D! L* D7 C. I0 Z
    try {
. Y, E0 o: _% i. e" r; I8 J3 k: W      modelActions.createActionTo$message
- W/ l- g6 c7 U1 \1 p        (heat, new Selector (heat.getClass (), "stepRule", false));7 K) k' X- k! f8 A0 J* m  d4 p
    } catch (Exception e) {
2 y  M& l# g) O      System.err.println ("Exception stepRule: " + e.getMessage ());1 L) r% W. i/ s3 J" Q$ m5 v
    }
8 [' ~4 Y3 Z3 O! k& Z* J
& F, T8 F- c2 ]$ a1 k& p0 W: U    try {
2 K# R  [3 s: i9 B  J: ?      Heatbug proto = (Heatbug) heatbugList.get (0);4 r/ J8 [3 ?) r- d' p( E( y5 R
      Selector sel =
  x/ K9 |7 {1 v% n& I. K        new Selector (proto.getClass (), "heatbugStep", false);
, ?9 R3 B( b/ v# r7 i; w      actionForEach =8 {' j* A' J. f6 [# M
        modelActions.createFActionForEachHomogeneous$call
4 M4 a8 @" u0 g. q5 j" h        (heatbugList,
( d- O, W7 m& ^; [         new FCallImpl (this, proto, sel,* y. n0 Z( f+ r* n* e
                        new FArgumentsImpl (this, sel)));* H: _% Y" q9 ~4 ~9 ~9 Z
    } catch (Exception e) {
9 k6 d; ?' q! M9 A% `, ^1 S" i      e.printStackTrace (System.err);- G# l! ^! V0 i' A1 o& E8 L
    }
, h4 A& b) f. [1 V3 V1 |   
; ~, Z8 N0 o4 M3 F  n- z    syncUpdateOrder ();0 y4 e7 T  g) @& |8 ~' A

6 T" E% o4 D: ]& l( F2 e8 g% Q    try {
* L' t6 F( L6 P# j; t6 Y6 c2 E      modelActions.createActionTo$message . U) p! e7 L: s' }# Z  G
        (heat, new Selector (heat.getClass (), "updateLattice", false));
6 ]" C0 N8 y+ i3 p    } catch (Exception e) {
; l% |. G9 U0 V! }' ]; W      System.err.println("Exception updateLattice: " + e.getMessage ());
# Y5 B2 _9 o  f+ l    }- g& K: x8 i0 h7 }
        
8 _; |" y6 O7 d2 w$ z/ N    // Then we create a schedule that executes the
' p( s& L7 M; S# b2 O    // modelActions. modelActions is an ActionGroup, by itself it
: ?6 S5 C2 X2 _' c# E* P    // has no notion of time. In order to have it executed in4 O8 `7 P/ @& W* m3 _- r
    // time, we create a Schedule that says to use the
, |) Q0 [7 I7 p" z- j) i7 W    // modelActions ActionGroup at particular times.  This6 X" U, ]  }1 s  {/ K
    // schedule has a repeat interval of 1, it will loop every& [1 n9 t* H4 {  _: Z+ D2 p/ ]
    // time step.  The action is executed at time 0 relative to% v& b# E- T  ]2 W: N- ]
    // the beginning of the loop.
8 K. j3 E1 ^6 {3 V! K- _5 A, H3 Q4 F  ^! p
    // This is a simple schedule, with only one action that is8 i$ o8 }9 s4 `" j/ n9 S
    // just repeated every time. See jmousetrap for more% `/ P6 X% F) Q, \1 G
    // complicated schedules./ t, u/ [8 Y+ X9 ^$ M
  
) j( w: A3 G3 r' y! T    modelSchedule = new ScheduleImpl (getZone (), 1);3 `2 `& e& X% {+ P( R, |- g9 {5 a
    modelSchedule.at$createAction (0, modelActions);
$ w. u- `& P* d0 t( t8 e1 a        
& D6 m1 @" n6 G4 D$ `* T    return this;5 d. j; o2 H. y# W7 G
  }
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-4-20 08:16 , Processed in 0.015600 second(s), 11 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表