/*
***************************************************************************************
* 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.core.context.mgr;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventPropertyGetter;
import com.espertech.esper.client.EventType;
import com.espertech.esper.client.PropertyAccessException;
import com.espertech.esper.collection.Pair;
import com.espertech.esper.epl.core.EngineImportService;
import com.espertech.esper.epl.core.EngineImportSingleRowDesc;
import com.espertech.esper.epl.expression.core.*;
import com.espertech.esper.epl.table.mgmt.TableService;
import com.espertech.esper.event.EventAdapterService;
import com.espertech.esper.util.JavaClassHelper;
import net.sf.cglib.reflect.FastMethod;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.InvocationTargetException;
import java.util.List;
public class ContextControllerHashedGetterSingleRow implements EventPropertyGetter {
private static final Logger log = LoggerFactory.getLogger(ContextControllerHashedGetterSingleRow.class);
private final String statementName;
private final FastMethod fastMethod;
private final ExprEvaluator[] evaluators;
private final int granularity;
public ContextControllerHashedGetterSingleRow(String statementName, String functionName, Pair<Class, EngineImportSingleRowDesc> func, List<ExprNode> parameters, int granularity, EngineImportService engineImportService, EventType eventType, EventAdapterService eventAdapterService, int statementId, TableService tableService, String engineURI)
throws ExprValidationException {
ExprNodeUtilMethodDesc staticMethodDesc = ExprNodeUtility.resolveMethodAllowWildcardAndStream(func.getFirst().getName(), null, func.getSecond().getMethodName(), parameters, engineImportService, eventAdapterService, statementId, true, eventType, new ExprNodeUtilResolveExceptionHandlerDefault(func.getSecond().getMethodName(), true), func.getSecond().getMethodName(), tableService, engineURI);
this.statementName = statementName;
this.evaluators = staticMethodDesc.getChildEvals();
this.granularity = granularity;
this.fastMethod = staticMethodDesc.getFastMethod();
}
public Object get(EventBean eventBean) throws PropertyAccessException {
EventBean[] events = new EventBean[]{eventBean};
Object[] parameters = new Object[evaluators.length];
for (int i = 0; i < evaluators.length; i++) {
parameters[i] = evaluators[i].evaluate(events, true, null);
}
try {
Object result = fastMethod.invoke(null, parameters);
if (result == null) {
return 0;
}
int value = ((Number) result).intValue();
if (value >= 0) {
return value % granularity;
}
return -value % granularity;
} catch (InvocationTargetException e) {
String message = JavaClassHelper.getMessageInvocationTarget(statementName, fastMethod.getJavaMethod(), fastMethod.getDeclaringClass().getName(), parameters, e);
log.error(message, e.getTargetException());
}
return 0;
}
public boolean isExistsProperty(EventBean eventBean) {
return false;
}
public Object getFragment(EventBean eventBean) throws PropertyAccessException {
return null;
}
}