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package com.greenpepper.interpreter.column;

import com.greenpepper.Call;
import com.greenpepper.Example;
import com.greenpepper.Statistics;
import com.greenpepper.TypeConversion;
import com.greenpepper.call.Annotate;
import com.greenpepper.call.Compile;
import com.greenpepper.call.ResultIs;
import com.greenpepper.reflect.Message;
import com.greenpepper.util.ExampleUtil;

/**
 * RecalledColumn class.
 *
 * @author oaouattara
 * @version $Id: $Id
 */
public class RecalledColumn extends Column
{
    private final Message message;

    /**
     * Constructor for RecalledColumn.
     *
     * @param message a {@link com.greenpepper.reflect.Message} object.
     */
    public RecalledColumn(Message message)
    {
        this.message = message;
    }

    /** {@inheritDoc} */
    public Statistics doCell(Example cell) throws Exception
    {
        String symbol = ExampleUtil.contentOf( cell );
        Object variable = context.getVariable( symbol );
        cell.setContent( TypeConversion.toString( variable ) );

        Statistics stats = new Statistics();
        Call call = new Call( message );
        call.will(Annotate.exception( cell )).when( ResultIs.exception());
        call.will(Compile.statistics(stats)).when(ResultIs.exception());

        call.execute( TypeConversion.toString( variable ) );

        return stats;
    }
}