/*
***************************************************************************************
* 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.table.merge;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.expression.core.ExprEvaluator;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
import com.espertech.esper.epl.expression.core.ExprNode;
import com.espertech.esper.epl.table.mgmt.TableStateInstance;
import com.espertech.esper.epl.table.onaction.TableOnMergeViewChangeHandler;
import com.espertech.esper.metrics.instrumentation.InstrumentationHelper;
import java.util.List;
public class TableOnMergeMatch {
private ExprEvaluator optionalCond;
private List<TableOnMergeAction> actions;
public TableOnMergeMatch(ExprNode optionalCond, List<TableOnMergeAction> actions) {
this.optionalCond = optionalCond != null ? optionalCond.getExprEvaluator() : null;
this.actions = actions;
}
public boolean isApplies(EventBean[] eventsPerStream, ExprEvaluatorContext context) {
if (optionalCond == null) {
return true;
}
Object result = optionalCond.evaluate(eventsPerStream, true, context);
return result != null && (Boolean) result;
}
public void apply(EventBean matchingEvent,
EventBean[] eventsPerStream,
TableStateInstance stateInstance,
TableOnMergeViewChangeHandler changeHandlerAdded,
TableOnMergeViewChangeHandler changeHandlerRemoved,
ExprEvaluatorContext context) {
if (InstrumentationHelper.ENABLED) {
InstrumentationHelper.get().qInfraMergeWhenThenActions(actions.size());
}
int count = -1;
for (TableOnMergeAction action : actions) {
count++;
if (InstrumentationHelper.ENABLED) {
InstrumentationHelper.get().qInfraMergeWhenThenActionItem(count, action.getName());
boolean applies = action.isApplies(eventsPerStream, context);
if (applies) {
action.apply(matchingEvent, eventsPerStream, stateInstance, changeHandlerAdded, changeHandlerRemoved, context);
}
InstrumentationHelper.get().aInfraMergeWhenThenActionItem(applies);
continue;
}
if (action.isApplies(eventsPerStream, context)) {
action.apply(matchingEvent, eventsPerStream, stateInstance, changeHandlerAdded, changeHandlerRemoved, context);
}
}
if (InstrumentationHelper.ENABLED) {
InstrumentationHelper.get().aInfraMergeWhenThenActions();
}
}
}