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: 8618|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:
  j! t: R& d& ]! Q2 _3 z, u5 C
% j) L5 B* t4 ~$ H2 F public Object buildActions () {
1 ?- }4 s! u; y. n6 H- R4 _    super.buildActions();
1 A) S9 E' |6 D8 B8 b/ S   
/ Q5 }. S) t4 @" D    // Create the list of simulation actions. We put these in
9 g- e" p, X- d, n1 ?    // an action group, because we want these actions to be, A6 w  f  K* `8 Z) g2 Z$ {' T5 C
    // executed in a specific order, but these steps should
& @& \) Z! K: Y    // take no (simulated) time. The M(foo) means "The message, h7 c2 ~% O+ n  ]
    // called <foo>". You can send a message To a particular3 r$ k8 @3 D' \7 C+ C6 V' ~9 h
    // object, or ForEach object in a collection.
0 J' R0 I! D  |! p6 \( X        6 Z4 v2 Q& ~# p
    // Note we update the heatspace in two phases: first run8 S1 }. X# B1 K) l6 W
    // diffusion, then run "updateWorld" to actually enact the
* \! V5 X$ ~5 T( F3 ]) x; |    // changes the heatbugs have made. The ordering here is- [3 t" d5 Y4 A) ^7 v9 B
    // significant!
) M5 T1 c% S. c4 y  t        
8 G1 b# ~( b' \! Y& F4 `    // Note also, that with the additional/ \. _5 L$ s6 E
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
  \$ _6 C% O" \( e3 t: C    // randomize the order in which the bugs actually run' L; `( {$ Q- J( l5 K
    // their step rule.  This has the effect of removing any: [# I7 Z' @/ ]( M- y7 Y+ u3 |
    // systematic bias in the iteration throught the heatbug
$ k2 a$ S. S+ T, b2 r    // list from timestep to timestep1 G- a& y; P0 a6 V$ n" N! w
        ) f# u; _; g5 X8 Z4 S/ M
    // By default, all `createActionForEach' modelActions have
. i8 K. C  b8 u8 M6 V    // a default order of `Sequential', which means that the
3 ~2 k2 `" m. V6 P    // order of iteration through the `heatbugList' will be+ I. E8 L5 U* P- d* ?5 F3 X) p
    // identical (assuming the list order is not changed
! I3 T0 B3 _4 l    // indirectly by some other process).: V/ E% r  N1 ]7 f
   
  G( q8 h, P( g4 E5 m5 @* t, w1 o    modelActions = new ActionGroupImpl (getZone ());
0 b, b! s2 f# t9 e( n: x  I' Q# I0 g( P$ t1 ^; W6 r
    try {
3 H0 z1 n3 f: w& v      modelActions.createActionTo$message
* _* z3 z( X' D; ^9 `/ ^6 z, N1 h5 Q        (heat, new Selector (heat.getClass (), "stepRule", false));* K+ F, L: q1 O% D8 c2 ~7 V
    } catch (Exception e) {' r8 a6 X0 v' X+ N
      System.err.println ("Exception stepRule: " + e.getMessage ());
7 \* F5 H& U$ M' k  o    }
/ Q7 {  n+ f) E- m" y0 F" {4 o( I" k( k
    try {
2 w6 [! B. N7 g- q. l  v      Heatbug proto = (Heatbug) heatbugList.get (0);' k$ R  k. |: Z% ~+ E
      Selector sel = 2 A( a  h8 t, x: d, Z2 M
        new Selector (proto.getClass (), "heatbugStep", false);6 H# u! j, B$ g+ l( c  b
      actionForEach =
- v) {" G6 A5 v; D0 d, a  E1 W        modelActions.createFActionForEachHomogeneous$call
$ w$ ]$ v3 m* G. D        (heatbugList,( N. E6 ?+ I% J! w* m0 b  W9 G
         new FCallImpl (this, proto, sel,
0 E% h- W8 H# Q7 ^( Y2 D& l) B                        new FArgumentsImpl (this, sel)));( Q2 Z: F* o# w$ M' _4 ?
    } catch (Exception e) {
2 W: z$ o2 `5 u  L( D: f- s8 m# Y      e.printStackTrace (System.err);
' r# J4 F# Q2 ~, G. {    }
5 d8 W7 \; ~: i2 a+ O' b% o    " m3 j9 E6 g: \; l4 u; v5 Y/ l
    syncUpdateOrder ();5 S; D1 z- P1 f4 `9 ?6 t1 P# b

5 `: o* L: R& Z% M3 r    try {8 A. Y" r3 c7 k/ B& h" Y3 H
      modelActions.createActionTo$message
# s" v/ x5 l! W/ a6 v        (heat, new Selector (heat.getClass (), "updateLattice", false));7 ?$ S1 \; ^+ o1 t, T
    } catch (Exception e) {
$ S+ \8 V& H, a) K8 [% I' D      System.err.println("Exception updateLattice: " + e.getMessage ());
  |( a" {0 Q) u* S8 ?    }+ s( b, n0 {( d; }; q4 O5 f
        
+ s* m2 K. V* c& p$ G: ]6 c/ K% {9 k    // Then we create a schedule that executes the& l; r" c) y& K0 _
    // modelActions. modelActions is an ActionGroup, by itself it
% l: H# U3 x3 w$ l. t, q: Q    // has no notion of time. In order to have it executed in
8 U( f# y5 L3 t! ~  e- X. J: H7 @    // time, we create a Schedule that says to use the1 o1 o) q% b- X
    // modelActions ActionGroup at particular times.  This' H# c8 J" {5 x$ z
    // schedule has a repeat interval of 1, it will loop every  Q" I* i8 G0 B. d! Z
    // time step.  The action is executed at time 0 relative to
1 o) W9 _# s5 S) T+ e9 A    // the beginning of the loop.
% p5 x1 P2 ~! W; N! U
3 B) V3 j. x0 g1 c6 a  r3 v, p    // This is a simple schedule, with only one action that is
: M" ?2 J, c+ C" y    // just repeated every time. See jmousetrap for more# U) j0 q) @& H7 j* J. v
    // complicated schedules.
2 h, w7 ?( k7 \4 V3 |  
  d& x: P  [! z    modelSchedule = new ScheduleImpl (getZone (), 1);
: |, s* t8 x" T) W+ ]    modelSchedule.at$createAction (0, modelActions);1 m) m; N( r  b& x3 H
        % A/ R: i) a6 {5 ?2 |7 A8 |
    return this;
7 Q# H; w4 u7 `9 i: X- q; ?& C1 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, 2026-1-18 19:10 , Processed in 0.015149 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