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: 8180|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:: {& I! k( Q; b" ], f5 R

' i; u) E7 n- p) r; s9 g' e, T public Object buildActions () {1 V9 n% E  W% g
    super.buildActions();! k. e) E, d, h+ y; |
    : U3 d- A1 h$ L" r8 ?4 U. c- }  w
    // Create the list of simulation actions. We put these in
% x$ Z3 T% A. P# M4 S    // an action group, because we want these actions to be5 ^7 z* {5 t* Y
    // executed in a specific order, but these steps should( R( `  t: H' i  B: T
    // take no (simulated) time. The M(foo) means "The message. S3 A% M- W; v
    // called <foo>". You can send a message To a particular
, T, N1 J: J" {" u0 C4 h% d; ?    // object, or ForEach object in a collection.
# i2 ?2 u% l/ m7 g        
; a+ ]6 {- y* g3 q/ I: M: Q    // Note we update the heatspace in two phases: first run  H- g* L% f/ T2 L, P
    // diffusion, then run "updateWorld" to actually enact the0 I9 g- j3 e7 f" b! R7 j2 d; c
    // changes the heatbugs have made. The ordering here is
$ |) |( ]6 U0 x5 |9 w- ~7 D    // significant!5 ?: A/ ^( w/ \% W
        0 Q/ ^4 |8 \$ u$ Q. ]7 m
    // Note also, that with the additional
1 a8 M& }0 Z# m* t6 l    // `randomizeHeatbugUpdateOrder' Boolean flag we can
* X2 g' n8 T6 W8 h4 G/ D    // randomize the order in which the bugs actually run
! v; J  R6 W( o    // their step rule.  This has the effect of removing any
! n) Y/ {  g- i7 p5 [; w    // systematic bias in the iteration throught the heatbug  m4 }1 A3 N% Q9 ^' S0 H
    // list from timestep to timestep
5 u6 g; K/ S" i7 q9 V! {/ d( X5 u        
! U: Y% n: i3 V- b, |8 n' {    // By default, all `createActionForEach' modelActions have
; M  u& Z' L+ s3 A. Q: g    // a default order of `Sequential', which means that the. @6 X) G3 G& ^( n/ i
    // order of iteration through the `heatbugList' will be
( @1 ?$ s  X! d  H0 _; h5 s    // identical (assuming the list order is not changed
; I2 a3 w& r1 p" p- |0 p* C) [( `' U    // indirectly by some other process).
, A- X7 H" J5 P/ h" V% p    * c, z" {1 F8 C3 I1 e1 l2 Y" o
    modelActions = new ActionGroupImpl (getZone ());+ V$ O4 L* Q5 ?& S5 c: Y2 S7 o8 ~
6 x/ p0 P6 V" p4 U
    try {& X2 D3 P( @( z* o
      modelActions.createActionTo$message% a6 t2 J$ j) j$ g  V2 A5 P3 h: t
        (heat, new Selector (heat.getClass (), "stepRule", false));
/ n( n! l# _2 E; ]7 A0 {- q0 ^: y$ f    } catch (Exception e) {' q7 G2 P  A6 r3 f  @
      System.err.println ("Exception stepRule: " + e.getMessage ());% j& F+ ~* X/ A9 Q* v8 {. `- v- ^' L
    }
' q" }# }/ k; {; o
  B* W& Y+ X4 Z+ o    try {  j# m% ]& J8 }* r0 }
      Heatbug proto = (Heatbug) heatbugList.get (0);
% }' R2 ^7 Q- ?8 j4 H      Selector sel =
& T1 W& p! D. Q" Q        new Selector (proto.getClass (), "heatbugStep", false);1 C2 F" F1 T- u5 {0 C
      actionForEach =7 [' j- Z# R/ v1 A1 g2 Z
        modelActions.createFActionForEachHomogeneous$call: [, W$ P" y6 ]3 _
        (heatbugList,
. ?$ i# K  w: ~5 s. g9 b         new FCallImpl (this, proto, sel," g7 T, D9 a% V7 s4 N) D& s
                        new FArgumentsImpl (this, sel)));+ o: u$ |3 l. c+ a+ H: I8 j
    } catch (Exception e) {
0 p% |' c3 m; j# {% e& F$ f      e.printStackTrace (System.err);
% M* M* f8 {" a    }
+ l% y, H. \* j, _$ b! @   
- K1 E8 `% }/ L) X" A2 N    syncUpdateOrder ();, c6 _. ?) P, S/ j/ r
1 I4 k% t# N! I; c
    try {
6 m; j* U- C5 B  u      modelActions.createActionTo$message
  M8 W4 C+ o" [7 C1 g2 f, b. k        (heat, new Selector (heat.getClass (), "updateLattice", false));
( N; a) E9 |% V3 A  U" _/ p    } catch (Exception e) {& G7 @& a/ ~9 A9 Y& W3 P
      System.err.println("Exception updateLattice: " + e.getMessage ());" W8 B! g4 }7 F5 J/ u- `# s; {+ B
    }
8 A8 i1 `9 z$ }5 c+ t7 _  M        ! Z5 T' _4 B" I
    // Then we create a schedule that executes the: p6 ~4 Z/ j6 q+ h$ R: E. {
    // modelActions. modelActions is an ActionGroup, by itself it4 `; \6 |  I. O& f
    // has no notion of time. In order to have it executed in- D- g  F& V$ Q# n. `+ @! I$ h
    // time, we create a Schedule that says to use the7 @+ I9 f" J3 T3 h
    // modelActions ActionGroup at particular times.  This- e- m# |5 N9 m
    // schedule has a repeat interval of 1, it will loop every
: p; A0 _. ?1 {) t: p    // time step.  The action is executed at time 0 relative to( |' q8 R1 j+ L
    // the beginning of the loop.* G$ @; U7 d& G

5 y& |' K4 X# @  q  r    // This is a simple schedule, with only one action that is
& i, R# i% ~8 c3 a' R& V3 H    // just repeated every time. See jmousetrap for more1 Y. E3 c% h9 _0 C
    // complicated schedules.
; F& C# u3 z  N+ a6 n) T/ D  
4 M0 N' E& \6 N) @5 T    modelSchedule = new ScheduleImpl (getZone (), 1);
6 A1 ?* q, I" j    modelSchedule.at$createAction (0, modelActions);# c+ ^9 C# m5 Y1 `
        
' i8 e9 `1 {+ l2 K    return this;1 R+ C% Z) S3 q# V% H$ y" E
  }
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, 2025-12-11 07:39 , Processed in 0.021075 second(s), 12 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表