package com.espertech.esper.event.map;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventType;
import com.espertech.esper.client.PropertyAccessException;
import com.espertech.esper.event.EventAdapterService;
import java.util.Map;
/**
* Getter for map entry.
*/
public class MapMaptypedPropertyGetter implements MapEventPropertyGetter
{
private final String propertyName;
private final EventType fragmentEventType;
private final EventAdapterService eventAdapterService;
/**
* Ctor.
* @param propertyNameAtomic property name
* @param fragmentEventType fragment type
* @param eventAdapterService factory for event beans and event types
*/
public MapMaptypedPropertyGetter(String propertyNameAtomic, EventType fragmentEventType, EventAdapterService eventAdapterService)
{
this.propertyName = propertyNameAtomic;
this.fragmentEventType = fragmentEventType;
this.eventAdapterService = eventAdapterService;
}
public Object getMap(Map<String, Object> map) throws PropertyAccessException
{
return map.get(propertyName);
}
public boolean isMapExistsProperty(Map<String, Object> map)
{
return true;
}
public Object get(EventBean obj) throws PropertyAccessException
{
Object underlying = obj.getUnderlying();
// The underlying is expected to be a map
if (!(underlying instanceof Map))
{
throw new PropertyAccessException("Mismatched property getter to event bean type, " +
"the underlying data object is not of type java.lang.Map");
}
Map map = (Map) underlying;
return getMap(map);
}
public boolean isExistsProperty(EventBean eventBean)
{
return true;
}
public Object getFragment(EventBean eventBean) throws PropertyAccessException
{
Object value = get(eventBean);
if (!(value instanceof Map))
{
if (value instanceof EventBean) {
return value;
}
return null;
}
Map mapTypedSubEvent = (Map) value;
return eventAdapterService.adaptorForTypedMap(mapTypedSubEvent, fragmentEventType);
}
}