com.espertech.esper.epl.join.exec.composite.CompositeAccessStrategyRangeInverted Maven / Gradle / Ivy

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Complex event processing and event series analysis component

There is a newer version: 7.1.0

package com.espertech.esper.epl.join.exec.composite;

import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.expression.ExprEvaluator;
import com.espertech.esper.epl.expression.ExprEvaluatorContext;
import com.espertech.esper.event.EventBeanUtility;

import java.util.*;

public class CompositeAccessStrategyRangeInverted extends CompositeAccessStrategyRangeBase implements CompositeAccessStrategy {

    public CompositeAccessStrategyRangeInverted(boolean isNWOnTrigger, int lookupStream, int numStreams, ExprEvaluator start, boolean includeStart, ExprEvaluator end, boolean includeEnd, Class coercionType) {
        super(isNWOnTrigger, lookupStream, numStreams, start, includeStart, end, includeEnd, coercionType);
    }

    public Set lookup(EventBean event, Map parent, Set result, CompositeIndexQuery next, ExprEvaluatorContext context) {
        Object comparableStart = super.evaluateLookupStart(event, context);
        if (comparableStart == null) {
            return null;
        }
        Object comparableEnd = super.evaluateLookupEnd(event, context);
        if (comparableEnd == null) {
            return null;
        }
        comparableStart = EventBeanUtility.coerce(comparableStart, coercionType);
        comparableEnd = EventBeanUtility.coerce(comparableEnd, coercionType);

        TreeMap index = (TreeMap) parent;
        SortedMap> submapOne = index.headMap(comparableStart, !includeStart);
        SortedMap> submapTwo = index.tailMap(comparableEnd, !includeEnd);
        return CompositeIndexQueryRange.handle(event, submapOne, submapTwo, result, next);
    }

    public Collection lookup(EventBean[] eventPerStream, Map parent, Collection result, CompositeIndexQuery next, ExprEvaluatorContext context) {
        Object comparableStart = super.evaluatePerStreamStart(eventPerStream, context);
        if (comparableStart == null) {
            return null;
        }
        Object comparableEnd = super.evaluatePerStreamEnd(eventPerStream, context);
        if (comparableEnd == null) {
            return null;
        }
        comparableStart = EventBeanUtility.coerce(comparableStart, coercionType);
        comparableEnd = EventBeanUtility.coerce(comparableEnd, coercionType);

        TreeMap index = (TreeMap) parent;
        SortedMap> submapOne = index.headMap(comparableStart, !includeStart);
        SortedMap> submapTwo = index.tailMap(comparableEnd, !includeEnd);
        return CompositeIndexQueryRange.handle(eventPerStream, submapOne, submapTwo, result, next);
    }
}