/*
***************************************************************************************
* 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.EventPropertyGetter;
import com.espertech.esper.client.PropertyAccessException;
import com.espertech.esper.event.BaseNestableEventUtil;
import java.util.Map;
/**
* Getter for an array of event bean using a nested getter.
*/
public class MapEventBeanArrayIndexedElementPropertyGetter implements MapEventPropertyGetter {
private final String propertyName;
private final int index;
private final EventPropertyGetter nestedGetter;
/**
* Ctor.
*
* @param propertyName property name
* @param index array index
* @param nestedGetter nested getter
*/
public MapEventBeanArrayIndexedElementPropertyGetter(String propertyName, int index, EventPropertyGetter nestedGetter) {
this.propertyName = propertyName;
this.index = index;
this.nestedGetter = nestedGetter;
}
public Object getMap(Map<String, Object> map) throws PropertyAccessException {
// If the map does not contain the key, this is allowed and represented as null
EventBean[] wrapper = (EventBean[]) map.get(propertyName);
return BaseNestableEventUtil.getArrayPropertyValue(wrapper, index, nestedGetter);
}
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);
EventBean[] wrapper = (EventBean[]) map.get(propertyName);
return BaseNestableEventUtil.getArrayPropertyFragment(wrapper, index, nestedGetter);
}
}