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: 12191|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:/ W7 Q+ b8 m+ c% o0 t
6 V3 y$ m9 @2 |2 k9 C* K
public Object buildActions () {4 D; _. ~" W/ L7 P3 l5 R2 V
    super.buildActions();
- _2 z3 x& G+ e7 a/ h" }1 U% N    ! q6 b" j' [' e7 Y
    // Create the list of simulation actions. We put these in
0 T: M5 i$ Z# B5 ~4 R/ t+ L    // an action group, because we want these actions to be
0 c' [  J# ^! E4 \8 j1 X    // executed in a specific order, but these steps should* `, _8 f* x9 \$ t
    // take no (simulated) time. The M(foo) means "The message& I" s; L% }- v; @$ C
    // called <foo>". You can send a message To a particular5 L! _. \: w* s2 L( X! s" q$ v
    // object, or ForEach object in a collection.
( b  n" Q9 E4 H& V: I5 w6 p        * r( q9 q8 K& }$ d4 q$ s
    // Note we update the heatspace in two phases: first run
! n$ t3 t, J' }1 T, K+ @    // diffusion, then run "updateWorld" to actually enact the. N; [1 y; P% B# P& }( n9 z
    // changes the heatbugs have made. The ordering here is
/ R, ^7 g; D  |, Q4 `* s    // significant!
8 b" J  Y- Z, i' n- u6 r        " l6 D- U5 t5 I' o
    // Note also, that with the additional
( f7 j0 |; _2 G; h  _. U    // `randomizeHeatbugUpdateOrder' Boolean flag we can' F0 F- Z" z1 b9 L* I( |  ], b
    // randomize the order in which the bugs actually run
4 _! o3 j* r% _- m9 L* e  R    // their step rule.  This has the effect of removing any
3 I* _: K' r% s3 Q! Q  K    // systematic bias in the iteration throught the heatbug; a9 }5 w& O4 j- P% x+ C7 X, j; G/ p. y
    // list from timestep to timestep
7 [8 I# O+ B' B# @6 x& `7 k0 G        
. O' L  G, ]3 B" M6 H    // By default, all `createActionForEach' modelActions have  Z- r# Q$ M! O
    // a default order of `Sequential', which means that the% I* O( m& l, b
    // order of iteration through the `heatbugList' will be
/ S  v; n! Q3 _8 ]. _/ s    // identical (assuming the list order is not changed! l& Z1 f! x5 k& T9 R' P
    // indirectly by some other process).2 @" S) d; S' a# c
   
& s7 V: K# Z$ b: I6 c2 h5 Z    modelActions = new ActionGroupImpl (getZone ());
! Q1 m7 \( h6 O' ]  R8 \  B8 j' k/ i" g% ?8 \0 Q+ l
    try {
* X  K: z1 H: B# |      modelActions.createActionTo$message* g$ T. X/ v. f6 f+ a1 R* x
        (heat, new Selector (heat.getClass (), "stepRule", false));# U4 D( j4 @: Q# O! j9 G
    } catch (Exception e) {
4 @+ s2 v" h2 S6 j! }+ P      System.err.println ("Exception stepRule: " + e.getMessage ());! E# x( H! u) ~
    }4 o* h7 X& ?$ w" q' q6 `
; t& I" }' M, B% I' ]
    try {. M$ y4 }" t0 h# W
      Heatbug proto = (Heatbug) heatbugList.get (0);
( q( t3 C2 P0 M      Selector sel =
& o/ S8 |3 n1 D9 V: P& j        new Selector (proto.getClass (), "heatbugStep", false);
. A5 f) \; r( F; \2 j( I) t9 J- z6 n      actionForEach =9 L$ f- j. o' v
        modelActions.createFActionForEachHomogeneous$call0 u) Q% K" y  Z9 j1 j) z3 {9 e
        (heatbugList,( p) O- b$ F/ j. n
         new FCallImpl (this, proto, sel,7 L+ ^9 _' d/ i& B, m2 u/ V
                        new FArgumentsImpl (this, sel)));, q: B! T' {; `6 ~$ S
    } catch (Exception e) {5 Y& P8 V9 d, }! m4 b
      e.printStackTrace (System.err);
( b: r- ^; W5 T1 {, n    }  x5 O# `* m! P+ M+ m2 R- B3 r) t
   
* f0 u4 k& ~8 E5 D: ]. j    syncUpdateOrder ();/ r; Q* O1 `% i. `4 B2 S
4 C/ v! J5 U! Z5 F! G6 f- r
    try {
0 Y# z6 b$ _/ m( f7 d      modelActions.createActionTo$message
( S' J+ ~* s, A5 w; r" Y7 ~& p        (heat, new Selector (heat.getClass (), "updateLattice", false));
+ s7 v+ q4 E7 a. H  U1 k# [$ ]    } catch (Exception e) {! j% F9 N% X% z
      System.err.println("Exception updateLattice: " + e.getMessage ());
6 K' e& c" N% H8 T    }
) F6 I; C) S) h+ \        
7 @& y* U8 @; {( K    // Then we create a schedule that executes the' w* I3 A7 M1 g% {" I; H
    // modelActions. modelActions is an ActionGroup, by itself it% v/ U/ {0 E/ u# w' e, r
    // has no notion of time. In order to have it executed in2 G! c+ D, J* w( v  q
    // time, we create a Schedule that says to use the
: v4 s" J3 [3 R9 l9 {( S2 i    // modelActions ActionGroup at particular times.  This1 m8 L4 i9 O) W; H) o# q4 T: V
    // schedule has a repeat interval of 1, it will loop every* X# Y) [5 E3 x. m7 k
    // time step.  The action is executed at time 0 relative to: h: x* [4 i; Z1 k
    // the beginning of the loop.; O% z5 B0 u) {
4 c4 o- Y; h7 V' Y( k5 ]
    // This is a simple schedule, with only one action that is& H3 B$ Q: R. I- B  \3 @
    // just repeated every time. See jmousetrap for more  p" p" K. Q$ i$ D: p; o
    // complicated schedules.* q( n4 ^% l8 j# x" f: ]2 f- Z7 j. L
  
( `% H5 z9 I9 p8 k8 @3 \6 K    modelSchedule = new ScheduleImpl (getZone (), 1);
) V( l& @2 x, g    modelSchedule.at$createAction (0, modelActions);
( S. w4 {! `- K. M) Y, U        
( g) ~( Z- M  Q% f    return this;
7 f2 i" g& c8 `  }
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, 2026-8-12 17:06 , Processed in 0.016264 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