gevalinstrany_seq.java

UML设计测试工具

/*
 * 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";
    }
    
}