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: 11204|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:
. T  u1 b9 @# ?8 `* b& R* j6 S# l5 L) L& ~* g/ X
public Object buildActions () {
" \  S" b, o5 @6 n    super.buildActions();
4 z" [6 @  e/ q! [. m. T   
" }% j5 V6 c8 o' j* T9 o' _" ^    // Create the list of simulation actions. We put these in# F! X, V! U2 q
    // an action group, because we want these actions to be
6 E3 f0 X7 S  g1 b8 Y    // executed in a specific order, but these steps should
% g  x. W# M( u  S    // take no (simulated) time. The M(foo) means "The message9 a8 u$ @6 y- C6 i+ ^4 _& g
    // called <foo>". You can send a message To a particular
! S! Z. j& V( f4 Z( L- G+ e    // object, or ForEach object in a collection.8 n. C4 p) S4 u
        
, }# v- U7 {; \    // Note we update the heatspace in two phases: first run
" q- C- E2 i" s* R    // diffusion, then run "updateWorld" to actually enact the
1 i; |7 P6 W" b9 {# v9 ]    // changes the heatbugs have made. The ordering here is
/ r# X* j* N9 ]$ Q. G    // significant!
6 U3 ?* `# c7 D' S" q/ A$ G8 G        # d1 ?& s7 a. n$ S( p9 b% q
    // Note also, that with the additional& P3 Z( b5 A6 V9 S5 u
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
/ W3 ?; D# S: k& y) {; R/ h) O    // randomize the order in which the bugs actually run
( l6 c* v6 O. E4 ]2 z/ c    // their step rule.  This has the effect of removing any4 u6 O7 u1 @( \
    // systematic bias in the iteration throught the heatbug
- X3 j* D$ e9 f5 q  s    // list from timestep to timestep
2 K3 q4 O! M$ Y, D/ ?! Z- I        
$ Q% z' b4 [6 W/ b* p  |; L    // By default, all `createActionForEach' modelActions have
' ^, L7 M7 z, O1 @! w    // a default order of `Sequential', which means that the
( Q) T4 x: P; L7 X* n9 r    // order of iteration through the `heatbugList' will be- K+ e  [$ }& B# {- r( r
    // identical (assuming the list order is not changed
1 G0 d& T# h8 ~    // indirectly by some other process).: v1 a; F3 v8 s7 w8 n
   
8 ?- i/ I' |9 [* q: o' o    modelActions = new ActionGroupImpl (getZone ());, q3 w' _" E! `; R

; o3 `  w* |# d) ]& Q7 D    try {
( S( ?3 _/ T$ M# S5 ?( V+ s0 _      modelActions.createActionTo$message) g/ [# b! F% y' G4 X
        (heat, new Selector (heat.getClass (), "stepRule", false));
6 N- o2 }! [0 u2 `1 n) }    } catch (Exception e) {4 u+ c4 @" A9 e% V% s, k
      System.err.println ("Exception stepRule: " + e.getMessage ());" B. a0 K3 Y  k* W* r. m
    }8 Z) {# U& |. |1 j# |

2 j6 L* e$ F7 F1 F4 F8 @) e    try {1 W- `7 D2 }# P% @8 X
      Heatbug proto = (Heatbug) heatbugList.get (0);4 U& Z/ E$ N: m1 E& r! `
      Selector sel =
  q$ T! F/ \, G* E        new Selector (proto.getClass (), "heatbugStep", false);, V* O* ^7 J* R* i
      actionForEach =
. u  d3 i2 F" U* y2 Q! [        modelActions.createFActionForEachHomogeneous$call
: `2 s3 i5 V/ H% ~- _! @5 ~0 k        (heatbugList,
# o5 Y3 f: V0 V: _) H! j2 \         new FCallImpl (this, proto, sel,
$ [( i0 I- q# c) G- D6 ^% Z8 W0 S                        new FArgumentsImpl (this, sel)));1 O% E, z: ]$ w- `
    } catch (Exception e) {9 E1 B8 `  D$ Q( |7 y: B0 o
      e.printStackTrace (System.err);- i4 x1 m$ c0 W6 t
    }0 U3 X: w9 B1 U2 V) Z9 P
   
. t$ K) j5 t2 u9 `- E/ v5 M8 y7 g    syncUpdateOrder ();
3 o; B$ X# C# t! l: Q$ o' N! `9 C- V/ h8 ?
    try {
$ N- U3 q  r+ i! c: Z* f! q2 f1 O      modelActions.createActionTo$message
0 S! H7 X$ y  f6 y- d$ H$ s        (heat, new Selector (heat.getClass (), "updateLattice", false));, w. B" y# z6 F" u* x6 p, x* E1 H
    } catch (Exception e) {
- T4 m% Z$ b3 w      System.err.println("Exception updateLattice: " + e.getMessage ());5 \$ G3 ?. C) K. O2 q8 A
    }
2 s8 Z* k* r+ M, t7 d1 x: c6 ^        ; H1 U. Z! {* [0 R# M' M' o7 U1 c7 ~
    // Then we create a schedule that executes the( P- w  z6 C( ]( P6 G: S
    // modelActions. modelActions is an ActionGroup, by itself it3 w9 ~/ ?' d, \; i' r0 ~# T9 c
    // has no notion of time. In order to have it executed in' {! G# Y0 q8 C& F% m# g
    // time, we create a Schedule that says to use the: c' _: L( K4 \3 {; @4 |
    // modelActions ActionGroup at particular times.  This
0 t2 e! ^" \, ]) t    // schedule has a repeat interval of 1, it will loop every+ [- f( T* C6 d: b6 X
    // time step.  The action is executed at time 0 relative to
% D1 V4 Z3 z0 i& G7 e1 q6 i    // the beginning of the loop.
, U4 F- w/ t9 x* p0 n' Z
" c. B. @- Y2 \' K% K" _    // This is a simple schedule, with only one action that is
  |7 M, x: O1 Z3 O2 I    // just repeated every time. See jmousetrap for more
$ d9 l' \5 T1 L8 c0 R    // complicated schedules.
6 \6 q0 o# |6 t  
, J& y# |7 S4 |$ i, J3 ?    modelSchedule = new ScheduleImpl (getZone (), 1);; C- {- F( ^( C" e" x6 f# g6 _$ L
    modelSchedule.at$createAction (0, modelActions);
0 g' D$ B$ u/ }$ T) d        
* C; v/ C! T2 u$ ?* Y    return this;, c4 G! h5 i2 q
  }
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, 2026-6-18 12:30 , Processed in 0.013002 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