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: 9104|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 L: y) X" g7 H* q
' J2 _  `% O- J# n- U
public Object buildActions () {+ g6 s6 l5 Q! I% m) \- U( ~
    super.buildActions();
, Q& M& S% m. ~) ^2 Z" i2 z   
, p- i) N# c; \- X5 l6 S/ k$ X3 y+ U    // Create the list of simulation actions. We put these in+ ~! j9 G+ v, ^" L
    // an action group, because we want these actions to be4 M; X5 J2 u3 H1 |
    // executed in a specific order, but these steps should
- P. L: u% p& P- |    // take no (simulated) time. The M(foo) means "The message' T9 R' P0 v7 f/ }7 U1 t) i
    // called <foo>". You can send a message To a particular
* K" U1 r* d$ e4 {7 G    // object, or ForEach object in a collection.
& L* `) ?9 X1 Y% J% f        
, _- i2 m' V4 Y4 S9 p" p" J    // Note we update the heatspace in two phases: first run. e! l$ A+ m; n
    // diffusion, then run "updateWorld" to actually enact the
' Q4 `/ `# f- H% p    // changes the heatbugs have made. The ordering here is- h, C$ o" J* a# F
    // significant!, t  u5 e$ K2 E( A5 s. s4 ^
        6 P4 Z5 x1 b; ~' }6 g6 q! [
    // Note also, that with the additional% ~. m4 c+ \5 ~+ e
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
  k9 ?4 N- w: ~- x6 i0 c+ G" _& b    // randomize the order in which the bugs actually run
* B6 J) v' K: ]2 m# z; s7 H    // their step rule.  This has the effect of removing any8 u" [  T1 t" F! j" H
    // systematic bias in the iteration throught the heatbug& ?# L- X" O% a' T
    // list from timestep to timestep* u  I/ {  b! Z* Z" J0 [  G, `
        0 _( K, \: u3 Q& X4 o" o0 a
    // By default, all `createActionForEach' modelActions have# C$ a+ {4 ^+ E5 d
    // a default order of `Sequential', which means that the. R  j- }# T' `: E7 O
    // order of iteration through the `heatbugList' will be- w$ T; a" R; g6 ?
    // identical (assuming the list order is not changed1 c2 u! `' e2 K  u/ M6 W+ X: K
    // indirectly by some other process).
& W2 B, n: @1 b1 U; s   
1 C, x3 T9 }9 J' b( f  G( _    modelActions = new ActionGroupImpl (getZone ());
* h% m1 m) u- c! H/ a  f# J: T& i7 N4 r0 G/ d
    try {
8 L" a& x0 y. L      modelActions.createActionTo$message2 T6 D0 G$ R2 w: q' y
        (heat, new Selector (heat.getClass (), "stepRule", false));/ ]0 I5 S2 [" U2 @
    } catch (Exception e) {" N' O9 q' _! Z8 s" Z. i+ ^
      System.err.println ("Exception stepRule: " + e.getMessage ());
  b$ A/ R2 |; X    }
% E" p: b# w* h' Z
: @1 l+ @% |9 j    try {4 Z; N% Z6 D& X
      Heatbug proto = (Heatbug) heatbugList.get (0);
4 P' P( C* d& Y      Selector sel = " [& R0 J5 J. ~% y
        new Selector (proto.getClass (), "heatbugStep", false);
4 ^( y4 v7 i7 I' V  C      actionForEach =' N4 O: D4 E/ B8 a
        modelActions.createFActionForEachHomogeneous$call
! m: e( L( `# L/ D2 Q' e        (heatbugList,7 A. B5 V' B% e/ }
         new FCallImpl (this, proto, sel,
4 u. I( D- `% u                        new FArgumentsImpl (this, sel)));+ n- ^. r" e( X1 I$ P
    } catch (Exception e) {* a7 G& R) f3 @& v( y& Y2 L9 f& |# r
      e.printStackTrace (System.err);
  G; q2 Y" e  E7 G( X8 I2 I    }
7 i+ v' W) k6 R- q& W    " F0 E# X9 n! z/ J$ z" @- _" E  J2 p3 }  M
    syncUpdateOrder ();, y! v3 ^! M. z' ]) {5 j

$ q2 G! k2 g; N; _; z' x& |2 G: K    try {2 j. X) j, E- y# e4 g# l7 E
      modelActions.createActionTo$message 7 t4 U! i. m8 D& v3 o3 C/ E3 R( `
        (heat, new Selector (heat.getClass (), "updateLattice", false));
$ n! c- G. Q: t% J8 i  _    } catch (Exception e) {( M0 A1 e$ M# h/ C2 f
      System.err.println("Exception updateLattice: " + e.getMessage ());: d$ x0 V# x3 ~* O. {
    }
8 q& o3 ?  U2 ^: _; s        
8 {! `* n8 H" L. Z* c9 ]( h    // Then we create a schedule that executes the/ i" H( l0 `  k9 ^4 a0 x
    // modelActions. modelActions is an ActionGroup, by itself it
6 `7 k3 n- q! K6 S# [    // has no notion of time. In order to have it executed in; R7 T$ b1 S. b, J) G- {9 e
    // time, we create a Schedule that says to use the
1 J  x+ \/ P  S) Q( q  s9 Z$ k) L8 z    // modelActions ActionGroup at particular times.  This
$ \4 r0 d' r2 {! z: ^$ V    // schedule has a repeat interval of 1, it will loop every
4 y5 r( `2 j) N& Y    // time step.  The action is executed at time 0 relative to
( F* V; r7 |  D$ K3 R* s    // the beginning of the loop.' o- d/ @  Y" L  `

* U' k. u& S% H" u& D! k    // This is a simple schedule, with only one action that is) ~" J; Q- K. Z
    // just repeated every time. See jmousetrap for more' e" @  N' K* v
    // complicated schedules.; F( N% \; }4 O( J, w
  
+ `: ~8 r' R/ d# }3 R. y    modelSchedule = new ScheduleImpl (getZone (), 1);
* z, {9 o7 ~  L) I  J, _: _    modelSchedule.at$createAction (0, modelActions);
6 O9 _% J  ]& z$ ]: L        
8 o# h0 s6 k3 n) ^* D    return this;  H# T$ O6 ]) P: |/ p8 D3 I
  }
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, 2026-2-12 04:38 , Processed in 0.015506 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