/*
* *************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* 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.PropertyAccessException;
import com.espertech.esper.event.BaseNestableEventUtil;
import com.espertech.esper.event.EventAdapterService;
import com.espertech.esper.event.bean.BaseNativePropertyGetter;
/**
* A getter that works on arrays residing within a Map as an event property.
*/
public class ObjectArrayArrayPOJOEntryIndexedPropertyGetter extends BaseNativePropertyGetter implements ObjectArrayEventPropertyGetterAndIndexed
{
private final int propertyIndex;
private final int index;
/**
* Ctor.
* @param index the index to fetch the array element for
* @param eventAdapterService factory for event beans and event types
* @param returnType type of the entry returned
*/
public ObjectArrayArrayPOJOEntryIndexedPropertyGetter(int propertyIndex, int index, EventAdapterService eventAdapterService, Class returnType)
{
super(eventAdapterService, returnType, null);
this.propertyIndex = propertyIndex;
this.index = index;
}
public Object getObjectArray(Object[] array) throws PropertyAccessException
{
return getArrayInternal(array, index);
}
public Object getArrayInternal(Object[] array, int index) throws PropertyAccessException
{
// If the map does not contain the key, this is allowed and represented as null
Object value = array[propertyIndex];
return BaseNestableEventUtil.getIndexedValue(value, index);
}
public boolean isObjectArrayExistsProperty(Object[] array)
{
return array.length > index;
}
public Object get(EventBean eventBean, int index) throws PropertyAccessException {
Object[] array = BaseNestableEventUtil.checkedCastUnderlyingObjectArray(eventBean);
return getArrayInternal(array, index);
}
public Object get(EventBean obj)
{
Object[] array = BaseNestableEventUtil.checkedCastUnderlyingObjectArray(obj);
return getObjectArray(array);
}
public boolean isExistsProperty(EventBean eventBean)
{
Object[] array = BaseNestableEventUtil.checkedCastUnderlyingObjectArray(eventBean);
return array.length > index;
}
}