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: 8980|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:: B0 [' [4 G6 Y; ^; {

. Y4 R& A6 |2 d7 O  K3 K9 q7 A public Object buildActions () {  |$ q/ ~1 K- N. z' Y6 ?
    super.buildActions();
: r, l6 a+ H1 a4 f: K   
# @/ W/ J) G# G! |6 O+ d    // Create the list of simulation actions. We put these in
4 x' }+ N% R8 _1 Y8 z2 P' l    // an action group, because we want these actions to be- d( n. g+ K0 E2 N1 c
    // executed in a specific order, but these steps should# m, Y- K! ]3 s5 z
    // take no (simulated) time. The M(foo) means "The message
/ h1 n  Z. D# @+ f+ h# |. P+ y    // called <foo>". You can send a message To a particular
2 N) }0 \4 @2 Z" j6 O! h" T& G- l    // object, or ForEach object in a collection.
2 \. @- k7 {+ Y0 O/ {# Y* Z$ ]8 e        
7 a; E' l9 H" Q2 S7 V1 Z6 q5 x    // Note we update the heatspace in two phases: first run
$ q2 `9 S$ _4 P1 ^9 E    // diffusion, then run "updateWorld" to actually enact the- F* V! ]- h4 o
    // changes the heatbugs have made. The ordering here is  ?9 D+ s2 j6 O! Y
    // significant!
3 o! w( B5 u- s0 w- X" b, J        
$ q* |9 h2 C+ t# ?/ T8 }    // Note also, that with the additional
% N" t1 Z% z- ]% @    // `randomizeHeatbugUpdateOrder' Boolean flag we can
) T( C4 V* J% ~; G0 ?' k, n    // randomize the order in which the bugs actually run
; S7 |6 l7 v, B4 {& m* S' H2 R6 ~    // their step rule.  This has the effect of removing any  S$ U$ B2 C% v' M, t" y- a" u' l
    // systematic bias in the iteration throught the heatbug
. J. U) n$ J! t; S1 W) C& Z    // list from timestep to timestep' v4 B0 r+ w  F" M! L9 G
        ' X! A) ^/ A$ Y4 l* U" z
    // By default, all `createActionForEach' modelActions have5 `8 n6 X+ y* K: y0 u
    // a default order of `Sequential', which means that the
4 Y$ n; _$ e  }/ j8 k- R9 D- v, P% T    // order of iteration through the `heatbugList' will be  O6 W$ e/ H/ E- W9 j  r
    // identical (assuming the list order is not changed
* k. w8 s  Z$ t7 h5 ^    // indirectly by some other process).* O% \* \. P" d3 _/ g
    1 ]6 J7 k6 v/ K) o/ b
    modelActions = new ActionGroupImpl (getZone ());0 f! X. S" C" D5 d9 @4 S+ {
$ x5 l0 `- K! q) B' X
    try {
$ s/ T8 P- G, Z+ r      modelActions.createActionTo$message
/ L1 @! O! [8 h        (heat, new Selector (heat.getClass (), "stepRule", false));' V7 S' P" A) ^2 c% [9 V1 D! X
    } catch (Exception e) {
5 \* `3 D$ v0 r' i. M; Z* n) Q      System.err.println ("Exception stepRule: " + e.getMessage ());
/ Y  z4 Z5 `- M( |0 U    }$ J) i- N* F' n& u
4 o/ O; M; y  @$ A2 I4 r( y
    try {
! N% L3 @' r- J# E$ a4 S$ l( i+ u( L      Heatbug proto = (Heatbug) heatbugList.get (0);9 Z  R+ G+ k3 F1 @) Y
      Selector sel =
' e' i; H1 G# k4 v& i4 I1 w        new Selector (proto.getClass (), "heatbugStep", false);! Y+ J; K0 S7 o) J
      actionForEach =
3 I0 M/ O8 g* s2 x) l0 o        modelActions.createFActionForEachHomogeneous$call
7 w6 }6 V4 \. z9 @        (heatbugList,# Q3 a3 f* X. M; ]
         new FCallImpl (this, proto, sel,
3 Z# _3 s; X! T2 K% j1 ^' u! P8 D                        new FArgumentsImpl (this, sel)));( P0 ?, z, H  g
    } catch (Exception e) {
4 e/ L& \2 V, F      e.printStackTrace (System.err);+ ^0 ^% q6 ~' K. I
    }
; q6 [% U% w3 t( ]   
% i' D) G* M0 y3 L8 e3 a( S' \3 k    syncUpdateOrder ();
; y- A9 B6 H6 x( _
; V# d, g4 K' c2 e2 n/ L4 A    try {% j$ ~! h% O7 @) k0 B1 r
      modelActions.createActionTo$message
; N3 a( P6 l8 \! o+ Y        (heat, new Selector (heat.getClass (), "updateLattice", false));5 d* h$ O1 p  @* f+ S
    } catch (Exception e) {# [! q) g; ?; O. P  L3 C2 K* q& G9 [
      System.err.println("Exception updateLattice: " + e.getMessage ());* U0 s3 z+ |! b
    }
2 g1 ?: s! \3 \        ) {: Q% N" `; X0 D/ `+ E
    // Then we create a schedule that executes the4 F  @5 o+ Y$ e7 A2 r# _
    // modelActions. modelActions is an ActionGroup, by itself it
) M) |  e" l- I& t    // has no notion of time. In order to have it executed in
6 x( A5 p8 \3 `8 i) V$ j0 J    // time, we create a Schedule that says to use the' P% o6 G0 F, f7 g# Y) W
    // modelActions ActionGroup at particular times.  This
0 s0 N4 d. b3 s8 ]5 _    // schedule has a repeat interval of 1, it will loop every
, b) s7 I5 k9 J5 G5 w3 l8 \  O- e# Q    // time step.  The action is executed at time 0 relative to
7 ]% |4 h( ]" r* I    // the beginning of the loop.2 _: {. z( T1 @0 @* }  a8 W( N# x4 a$ B

. l' f! A; m% Y4 A& B9 h    // This is a simple schedule, with only one action that is1 g. }. t' c0 s6 |0 ^2 e( W0 M
    // just repeated every time. See jmousetrap for more
" }% Q" I! V/ p" I    // complicated schedules.* @1 u* [4 O# O: p3 K& L& B2 p$ G
  
& F$ U1 V" o1 _4 s' H+ v    modelSchedule = new ScheduleImpl (getZone (), 1);% q( I) g; }$ z3 Y
    modelSchedule.at$createAction (0, modelActions);6 j# |2 T# C& ~+ j2 F) D0 z
        3 _; q* _; Z: K$ o% s1 ~+ _7 X' U7 N
    return this;9 Z; Y2 e7 v' ]2 p- E  ^: g+ |
  }
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, 2026-2-6 06:47 , Processed in 0.019043 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