com.espertech.esper.epl.join.plan.CompositeTableLookupPlan Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of esper Show documentation

Complex event processing and event series analysis component

There is a newer version: 7.1.0

/*
 ***************************************************************************************
 *  Copyright (C) 2006 EsperTech, Inc. All rights reserved.                            *
 *  http://www.espertech.com/esper                                                     *
 *  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.join.plan;

import com.espertech.esper.client.EventType;
import com.espertech.esper.epl.join.exec.base.CompositeTableLookupStrategy;
import com.espertech.esper.epl.join.exec.base.JoinExecTableLookupStrategy;
import com.espertech.esper.epl.join.table.EventTable;
import com.espertech.esper.epl.join.table.PropertyCompositeEventTable;

import java.util.List;

/**
 * Plan to perform an indexed table lookup.
 */
public class CompositeTableLookupPlan extends TableLookupPlan {
    private final List hashKeys;
    private final List rangeKeyPairs;

    public CompositeTableLookupPlan(int lookupStream, int indexedStream, TableLookupIndexReqKey indexNum, List hashKeys, List rangeKeyPairs) {
        super(lookupStream, indexedStream, new TableLookupIndexReqKey[]{indexNum});
        this.hashKeys = hashKeys;
        this.rangeKeyPairs = rangeKeyPairs;
    }

    public TableLookupKeyDesc getKeyDescriptor() {
        return new TableLookupKeyDesc(hashKeys, rangeKeyPairs);
    }

    public JoinExecTableLookupStrategy makeStrategyInternal(EventTable[] eventTable, EventType[] eventTypes) {
        PropertyCompositeEventTable index = (PropertyCompositeEventTable) eventTable[0];
        return new CompositeTableLookupStrategy(eventTypes[this.getLookupStream()], this.getLookupStream(), hashKeys, rangeKeyPairs, index);
    }

    public String toString() {
        return "CompositeTableLookupPlan " +
                super.toString() +
                " directKeys=" + QueryGraphValueEntryHashKeyed.toQueryPlan(hashKeys) +
                " rangeKeys=" + QueryGraphValueEntryRange.toQueryPlan(rangeKeyPairs);
    }
}