/*
***************************************************************************************
* 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.arr;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventPropertyGetter;
import com.espertech.esper.client.PropertyAccessException;
import com.espertech.esper.event.BaseNestableEventUtil;
/**
* A getter that works on EventBean events residing within a Map as an event property.
*/
public class ObjectArrayEventBeanEntryPropertyGetter implements ObjectArrayEventPropertyGetter {
private final int propertyIndex;
private final EventPropertyGetter eventBeanEntryGetter;
/**
* Ctor.
*
* @param propertyIndex the property to look at
* @param eventBeanEntryGetter the getter for the map entry
*/
public ObjectArrayEventBeanEntryPropertyGetter(int propertyIndex, EventPropertyGetter eventBeanEntryGetter) {
this.propertyIndex = propertyIndex;
this.eventBeanEntryGetter = eventBeanEntryGetter;
}
public Object getObjectArray(Object[] array) throws PropertyAccessException {
// If the map does not contain the key, this is allowed and represented as null
Object value = array[propertyIndex];
if (value == null) {
return null;
}
// Object within the map
EventBean theEvent = (EventBean) value;
return eventBeanEntryGetter.get(theEvent);
}
public boolean isObjectArrayExistsProperty(Object[] array) {
return true; // Property exists as the property is not dynamic (unchecked)
}
public Object get(EventBean obj) {
return getObjectArray(BaseNestableEventUtil.checkedCastUnderlyingObjectArray(obj));
}
public boolean isExistsProperty(EventBean eventBean) {
return true; // Property exists as the property is not dynamic (unchecked)
}
public Object getFragment(EventBean obj) {
// If the map does not contain the key, this is allowed and represented as null
Object value = BaseNestableEventUtil.checkedCastUnderlyingObjectArray(obj)[propertyIndex];
if (value == null) {
return null;
}
// Object within the map
EventBean theEvent = (EventBean) value;
return eventBeanEntryGetter.getFragment(theEvent);
}
}