SubordCompositeTableLookupStrategy.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.lookup;

import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.expression.ExprEvaluatorContext;
import com.espertech.esper.epl.join.exec.composite.CompositeIndexQuery;
import com.espertech.esper.epl.join.table.PropertyCompositeEventTable;

import java.util.Collection;

/**
 * Index lookup strategy for subqueries.
 */
public class SubordCompositeTableLookupStrategy implements SubordTableLookupStrategy
{
    private final CompositeIndexQuery innerIndexQuery;
    private final PropertyCompositeEventTable index;

    public SubordCompositeTableLookupStrategy(CompositeIndexQuery innerIndexQuery, PropertyCompositeEventTable index) {
        this.innerIndexQuery = innerIndexQuery;
        this.index = index;
    }

    public Collection<EventBean> lookup(EventBean[] eventsPerStream, ExprEvaluatorContext context)
    {
        return innerIndexQuery.get(eventsPerStream, index.getIndex(), context);
    }

    public Collection<EventBean> lookup(Object[] keys) {
        return null;
    }

    public String toQueryPlan() {
        return this.getClass().getSimpleName();
    }
}