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: 12598|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:2 T$ D) q" |9 {; R* h$ Q
* ^2 [9 ]5 L% {# ]  @. K
public Object buildActions () {! z6 l" |, o7 e, H( Z7 G
    super.buildActions();
8 M# A$ N9 F3 t/ N& L& Y4 t   
/ ^0 g2 E9 e( Q& G    // Create the list of simulation actions. We put these in  ?! U4 x' l+ c2 C; Q/ p
    // an action group, because we want these actions to be& {1 e; T5 }( T1 M$ @7 B0 a" l9 {
    // executed in a specific order, but these steps should8 v9 O3 d6 B; F  ?& \2 ?
    // take no (simulated) time. The M(foo) means "The message
! D! G4 ?8 S9 W% o& o0 |    // called <foo>". You can send a message To a particular  T! @; d. O) i6 [
    // object, or ForEach object in a collection.
! a: s9 B1 R3 \4 |9 v        0 ^! w" ^* D  E* L0 |7 q
    // Note we update the heatspace in two phases: first run
+ @1 K- V% a& i. O/ U) ?    // diffusion, then run "updateWorld" to actually enact the
, [# N7 B) E+ a% b: [    // changes the heatbugs have made. The ordering here is% a8 _! O, D" V4 U
    // significant!
9 s9 W7 L, S2 p9 m. K        ; F7 M, W& D* I5 ?6 d( ]/ L7 J4 R
    // Note also, that with the additional
$ T7 c2 o  c$ J3 @0 N    // `randomizeHeatbugUpdateOrder' Boolean flag we can
# A7 {( C& s1 b7 F( ?! t9 E0 D    // randomize the order in which the bugs actually run
7 c+ T7 y# P2 L- t3 X    // their step rule.  This has the effect of removing any
' Q$ R% }9 W( A7 G! |    // systematic bias in the iteration throught the heatbug
, Y( z1 Q$ O; D# w/ D6 A    // list from timestep to timestep
  E3 N4 a; V$ U4 ]* G        
, X( D) b9 U/ K) E    // By default, all `createActionForEach' modelActions have
7 s5 {4 H1 [7 ~& [# N) J% @    // a default order of `Sequential', which means that the
+ R; x6 J1 i- x2 `% ?1 [    // order of iteration through the `heatbugList' will be
$ i3 b$ |- z. N; i# n    // identical (assuming the list order is not changed
5 Z7 x! k% h) ^0 B8 _  z    // indirectly by some other process).* i! p5 l6 W2 a3 f# }: k* H
   
  X+ S' e) H4 P( }. T. H    modelActions = new ActionGroupImpl (getZone ());1 [! A' \9 Q8 D' n; ~6 g

' t, v% q; Z) \    try {* [3 m( ^) v* p
      modelActions.createActionTo$message: C; q9 S6 u, N  [
        (heat, new Selector (heat.getClass (), "stepRule", false));/ L5 w% |5 R9 Y$ @  ^
    } catch (Exception e) {$ v" u' X/ s/ G3 b. {
      System.err.println ("Exception stepRule: " + e.getMessage ());
' d) O4 P' k8 j    }4 u9 C6 {' y1 n
2 I* P/ E. j; x$ j, S
    try {& e7 S  `) m5 B2 O
      Heatbug proto = (Heatbug) heatbugList.get (0);
& [2 r9 P" p2 z4 L      Selector sel = + A$ ^3 D. i! c7 I- }6 j3 i
        new Selector (proto.getClass (), "heatbugStep", false);
" O( d! }$ L7 b      actionForEach =9 H4 @) @! t5 F( O
        modelActions.createFActionForEachHomogeneous$call
4 m( ?1 X5 Z& |+ k! A2 c7 B  s3 @* p        (heatbugList,
7 i7 @( E0 ~: N         new FCallImpl (this, proto, sel,
! b/ C0 H7 t2 [: Q1 C                        new FArgumentsImpl (this, sel)));$ E; s% R2 i$ Q$ D/ R$ L& z0 o
    } catch (Exception e) {
) q9 }1 l7 R+ ]/ D5 Z      e.printStackTrace (System.err);
8 n2 j; [9 P  g9 i' [    }9 j7 A& {% Q& _* S' g
   
# B5 v) R: J# _, H, i    syncUpdateOrder ();
; ~7 p6 k! L! d" ?# f8 ?! T
, z4 u6 O8 B: y5 u* m+ A    try {* f/ J9 Z2 M7 m, |
      modelActions.createActionTo$message & V+ q9 l" i5 Q$ g; t$ i5 H# z
        (heat, new Selector (heat.getClass (), "updateLattice", false));
) _) ]( a( f5 F$ ^# G    } catch (Exception e) {
. U- ^7 T/ K+ B& `) S! z, H" v  o      System.err.println("Exception updateLattice: " + e.getMessage ());
; C0 n9 h, \0 p9 y    }
* r: s3 @/ H8 j$ z* B) I0 K        % V% t. b# O# c4 _" Z
    // Then we create a schedule that executes the- T! w4 {: U' ^4 H- i# R' M" V
    // modelActions. modelActions is an ActionGroup, by itself it9 S7 c3 A; D  ]% f- x& C3 a* r. s9 k/ b
    // has no notion of time. In order to have it executed in6 d/ I% |& l  ^! v) u
    // time, we create a Schedule that says to use the" ?7 i2 s: ^4 }8 O. R$ F/ \
    // modelActions ActionGroup at particular times.  This
1 {# `* c) [2 I$ o/ j& F    // schedule has a repeat interval of 1, it will loop every
9 c+ z2 H9 z% C- [# S! m% m    // time step.  The action is executed at time 0 relative to
$ B4 f+ g) K2 M' e2 d' c) [    // the beginning of the loop.( O  ?  F0 |9 ~1 ^" c  M
# J+ [$ [$ P, o4 t" n; v
    // This is a simple schedule, with only one action that is! Y7 G* ~6 [! |8 R+ D  P
    // just repeated every time. See jmousetrap for more; T, ~3 q$ h" q/ w5 X
    // complicated schedules.
) u" V; k9 f# |" \5 n% @  
- p7 m1 U8 s0 C' ^) E/ z4 K. E% z    modelSchedule = new ScheduleImpl (getZone (), 1);
& M/ V/ O$ h: Z( z    modelSchedule.at$createAction (0, modelActions);
; c7 _# v8 z# m3 m        
, U" }$ q; ]4 F4 N    return this;0 w& V& a9 ?8 r# i2 s0 E2 Y8 K
  }
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, 2026-9-11 01:47 , Processed in 0.011746 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