package edu.ucsb.cs.jicos.services.tasks;

import edu.ucsb.cs.jicos.services.*;

/** A compositional Task, whose inputs & output are Integer.
 */
public final class AddInteger extends Task
{	
    /** This method's returned value is the Integer whose intValue is the sum
     * of the intValues of its Integer inputs.
     * @return the Integer whose intValue is the sum of the intValues of its Integer inputs.
     * @param environment Not used by this Task.
     */    
    public Object execute ( Environment environment )
    {
        int sum = 0;
        for ( int i = 0; i < numInputs(); i++ )
        {
            sum += ((Integer) getInput( i )).intValue();
        }
        return new Integer( sum );
    }
    
    /** This task executes on the task server.
     * @param environment Session environment (ignored).
     * @return true: This task executes on the task server.
     */  
    public boolean executeOnServer( Environment environment ) { return true; }
}