ViewableActivatorNamedWindow.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.core.context.activator;

import com.espertech.esper.core.context.util.AgentInstanceContext;
import com.espertech.esper.epl.expression.ExprNode;
import com.espertech.esper.epl.named.NamedWindowConsumerDesc;
import com.espertech.esper.epl.named.NamedWindowConsumerView;
import com.espertech.esper.epl.named.NamedWindowProcessor;
import com.espertech.esper.epl.property.PropertyEvaluator;

import java.util.List;

public class ViewableActivatorNamedWindow implements ViewableActivator {

    private final NamedWindowProcessor processor;
    private final List<ExprNode> filterExpressions;
    private final PropertyEvaluator optPropertyEvaluator;

    public ViewableActivatorNamedWindow(NamedWindowProcessor processor, List<ExprNode> filterExpressions, PropertyEvaluator optPropertyEvaluator) {
        this.processor = processor;
        this.filterExpressions = filterExpressions;
        this.optPropertyEvaluator = optPropertyEvaluator;
    }

    public ViewableActivationResult activate(AgentInstanceContext agentInstanceContext, boolean isSubselect, boolean isRecoveringResilient) {
        NamedWindowConsumerDesc consumerDesc = new NamedWindowConsumerDesc(filterExpressions, optPropertyEvaluator, agentInstanceContext);
        NamedWindowConsumerView consumerView = processor.addConsumer(consumerDesc, isSubselect);
        return new ViewableActivationResult(consumerView, consumerView, null, null);
    }
}