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: 8563|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:
9 i' @) v- o' B4 G3 U0 n* D6 T1 M4 x: s' R4 R
public Object buildActions () {
) F/ A2 x# C, G$ ^0 R    super.buildActions();* E5 ]1 B; f2 c: n( V
    6 v* M" u+ h! S  z1 R( H6 a
    // Create the list of simulation actions. We put these in0 D; b6 _/ r" B1 L$ M0 J
    // an action group, because we want these actions to be
; z9 I3 {9 L5 ^+ H) Y( B" ?    // executed in a specific order, but these steps should9 f/ k! ~( |$ J+ E; u! }
    // take no (simulated) time. The M(foo) means "The message4 y+ Z% X* s1 h% }- l% S
    // called <foo>". You can send a message To a particular0 X6 z0 r) A4 _
    // object, or ForEach object in a collection.
; b4 |7 Q6 f# Y  _1 Z        
8 z8 N' F# i; \- L6 n' q    // Note we update the heatspace in two phases: first run
" S0 f3 T: ^. U9 L$ h2 r! m    // diffusion, then run "updateWorld" to actually enact the
4 _0 h: R% i+ \7 I1 Z" G1 k1 y4 X    // changes the heatbugs have made. The ordering here is2 I* u  w# e/ E: m
    // significant!
' O6 K1 T/ M$ M        ' L# W' z! B; a0 q
    // Note also, that with the additional
; V$ c, o$ A# Z' d$ ?    // `randomizeHeatbugUpdateOrder' Boolean flag we can
0 m, s. H, M' t9 k3 O: j1 X; B; T    // randomize the order in which the bugs actually run
: ?6 V! x5 F9 |; R' @: e    // their step rule.  This has the effect of removing any: o- J5 y. p+ E9 f! {+ Q
    // systematic bias in the iteration throught the heatbug
5 Y7 x! R! @' z! c$ a3 q9 f    // list from timestep to timestep, G4 M% |# m1 h  n. C4 S$ V) g
        5 w+ C: D6 a" K
    // By default, all `createActionForEach' modelActions have
7 D7 Z6 r9 e/ h/ a( v7 u  {    // a default order of `Sequential', which means that the  V* Z, O" a% A  I& o* D2 j) T
    // order of iteration through the `heatbugList' will be
  u# {& u  a1 N4 t' \& c    // identical (assuming the list order is not changed
5 f- a+ O& B$ {  _6 F1 @5 ~    // indirectly by some other process).
2 v6 n* j( x3 i5 E4 v    : u, \! e' L9 o5 U  N+ }
    modelActions = new ActionGroupImpl (getZone ());. A9 k5 A8 S% ^

1 w2 P4 b7 R( }    try {5 X( {2 A* _0 ?& r6 V$ I; ?
      modelActions.createActionTo$message
! Q/ M% q5 V9 y% ~) @$ b' T0 @3 o        (heat, new Selector (heat.getClass (), "stepRule", false));
3 p) o5 a% A, L4 l    } catch (Exception e) {/ W! R. X; @7 E/ n& {6 Y* [
      System.err.println ("Exception stepRule: " + e.getMessage ());# K& Z! N& b- E7 z+ |4 v
    }
# k# s3 N7 b+ S& Z2 G, {& ]( D! O, I- U% }" E% ~
    try {
4 D& t+ r" w) ?( z4 I      Heatbug proto = (Heatbug) heatbugList.get (0);, D5 M: O& x6 u; V) I; t1 I
      Selector sel =
+ F4 W; ~- E0 a) f' _        new Selector (proto.getClass (), "heatbugStep", false);
+ z1 m5 L. E* V0 d      actionForEach =
  b3 J- f, z. J' Q( `- Q4 c        modelActions.createFActionForEachHomogeneous$call! y3 K# t2 o' l1 i/ n9 g
        (heatbugList,
2 s6 p$ a* G& `; h7 u+ X* T         new FCallImpl (this, proto, sel,4 `( o2 W' h- d6 y+ Y
                        new FArgumentsImpl (this, sel)));
/ R  @; b/ e( a    } catch (Exception e) {
* R- j+ A! D* `" h      e.printStackTrace (System.err);2 B9 i& j! v& l
    }9 P: W) @; ^7 A7 z& q
   
* Z! h5 q6 p& [& S8 \) D& H    syncUpdateOrder ();2 J- G! y5 m* I  J4 g0 c
& l2 E, S/ Y" ~9 G( a" V# Z$ F
    try {
" A7 v' }1 [8 B( p6 c1 j' k% s      modelActions.createActionTo$message 3 V5 Y* w% h! ?$ g  @
        (heat, new Selector (heat.getClass (), "updateLattice", false));: n! g# P( v6 `& U
    } catch (Exception e) {
& H- E* n2 l2 _' n7 ]0 |. `      System.err.println("Exception updateLattice: " + e.getMessage ());+ C& }6 {) X8 F* q5 L/ @
    }
  q. E: E$ y% Z3 ~1 n        5 _" B) L7 q1 f, q) x/ }, E+ `
    // Then we create a schedule that executes the/ E# v# b; s, e- c9 U1 d1 [
    // modelActions. modelActions is an ActionGroup, by itself it8 P$ W% D! L& r+ y8 W2 L  y
    // has no notion of time. In order to have it executed in2 U" Y' X+ N$ j0 N* l
    // time, we create a Schedule that says to use the( `# i8 N/ J* [) X9 s
    // modelActions ActionGroup at particular times.  This% |6 c6 {4 A# S4 H- H1 S
    // schedule has a repeat interval of 1, it will loop every
6 h5 Q) B( ^, P7 }* |: n3 z    // time step.  The action is executed at time 0 relative to2 r- M. y4 x/ G4 k
    // the beginning of the loop.3 j  ^, P  V+ ]3 w. y

4 [- n) z4 n4 w# @6 ~6 ~  o    // This is a simple schedule, with only one action that is, W4 R, W. K' J- V: ?# L. Q
    // just repeated every time. See jmousetrap for more3 j; w3 h9 I% w2 n& n- m
    // complicated schedules.  {5 H) T; h& l0 u1 ?
  8 X+ m' P/ f3 d! }. r9 P+ e, h
    modelSchedule = new ScheduleImpl (getZone (), 1);
' a# ~% c  z6 x  T    modelSchedule.at$createAction (0, modelActions);0 p( E6 b% e0 f. U" O7 {- \6 E
        
% K% U' }2 U" u7 a( [0 e    return this;
: _; r8 c3 X+ B$ d3 F  }
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, 2026-1-14 07:26 , Processed in 0.014781 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