/* * This is source code of the Snapshot Generator, an extension for USE * to generate (valid) system states of UML models. * Copyright (C) 2001 Joern Bohling, University of Bremen * * About USE: *   USE - UML based specification environment *   Copyright (C) 1999,2000,2001 Mark Richters, University of Bremen * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *//** * March 22th 2001  * @author  Joern Bohling */package org.tzi.use.gen.assl.dynamics;import org.tzi.use.gen.assl.statics.GInstrAny_Seq;import org.tzi.use.uml.ocl.value.Value;import org.tzi.use.uml.ocl.value.CollectionValue;class GEvalInstrAny_Seq extends GEvalInstruction implements IGCaller {    private GInstrAny_Seq fInstr;    private IGCaller fCaller;    public GEvalInstrAny_Seq(GInstrAny_Seq instr ) {        fInstr = instr;    }    public void eval(GConfiguration conf,                     IGCaller caller,                     IGCollector collector) throws GEvaluationException {        collector.detailPrintWriter().println("evaluating `" + fInstr + "'");        fCaller = caller;        GCreator.createFor(fInstr.sequenceInstr()).eval( conf, this, collector );    }    public void feedback( GConfiguration conf,                          Value value,                          IGCollector collector ) throws GEvaluationException {        if (value.isUndefined())            collector.invalid(buildCantExecuteMessage(fInstr,                                                      fInstr.sequenceInstr()));        else {            int size = ((CollectionValue) value).size();            if (size<=0)                 collector.invalid( "Can't execute `" + fInstr + "', because `"                                   + fInstr.sequenceInstr() + "' is empty.");            else {                Object[] vals= ((CollectionValue)value).collection().toArray();                Value val = (Value) vals[conf.random().nextInt(size)];                collector.detailPrintWriter().println("`"+fInstr+"' == "+val);                fCaller.feedback( conf, val, collector );            }                }    }    public String toString() {        return "GEvalInstrAny_Seq";    }    }