AggregationServiceNullFactory.java

/**************************************************************************************
 * Copyright (C) 2008 EsperTech, Inc. All rights reserved.                            *
 * http://esper.codehaus.org                                                          *
 * http://www.espertech.com                                                           *
 * ---------------------------------------------------------------------------------- *
 * The software in this package is published under the terms of the GPL license       *
 * a copy of which has been included with this distribution in the license.txt file.  *
 **************************************************************************************/
package com.espertech.esper.epl.agg.service;

import com.espertech.esper.core.context.util.AgentInstanceContext;
import com.espertech.esper.epl.core.MethodResolutionService;

/**
 * A null object implementation of the AggregationService
 * interface.
 */
public class AggregationServiceNullFactory implements AggregationServiceFactory {

    public final static AggregationServiceNullFactory AGGREGATION_SERVICE_NULL_FACTORY = new AggregationServiceNullFactory();

    private final static AggregationServiceNull AGGREGATION_SERVICE_NULL = new AggregationServiceNull();

    public AggregationService makeService(AgentInstanceContext agentInstanceContext, MethodResolutionService methodResolutionService) {
        return AGGREGATION_SERVICE_NULL;
    }
}