/*
***************************************************************************************
* 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.event.map;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.PropertyAccessException;
import com.espertech.esper.event.BaseNestableEventUtil;
import java.util.Map;
/**
* A getter for use with Map-based events simply returns the value for the key.
*/
public class MapEventBeanPropertyGetter implements MapEventPropertyGetter {
private final String propertyName;
/**
* Ctor.
*
* @param propertyName property to get
*/
public MapEventBeanPropertyGetter(String propertyName) {
this.propertyName = propertyName;
}
public Object getMap(Map<String, Object> map) throws PropertyAccessException {
Object eventBean = map.get(propertyName);
if (eventBean == null) {
return null;
}
EventBean theEvent = (EventBean) eventBean;
return theEvent.getUnderlying();
}
public boolean isMapExistsProperty(Map<String, Object> map) {
return true; // Property exists as the property is not dynamic (unchecked)
}
public Object get(EventBean obj) {
return getMap(BaseNestableEventUtil.checkedCastUnderlyingMap(obj));
}
public boolean isExistsProperty(EventBean eventBean) {
return true; // Property exists as the property is not dynamic (unchecked)
}
public Object getFragment(EventBean obj) {
Map<String, Object> map = BaseNestableEventUtil.checkedCastUnderlyingMap(obj);
return map.get(propertyName);
}
}