com.espertech.esper.event.vaevent

Class VariantPropertyGetterCache

java.lang.Object

com.espertech.esper.event.vaevent.VariantPropertyGetterCache

public class VariantPropertyGetterCache
extends Object

A thread-safe cache for property getters per event type.

Since most often getters are used in a row for the same type, keeps a row of last used getters for fast lookup based on type.

Constructor Summary

Constructors

Constructor and Description
VariantPropertyGetterCache(EventType[] knownTypes) Ctor.

Method Summary

Modifier and Type	Method and Description
void	addGetters(int assignedPropertyNumber, String propertyName) Adds the getters for a property that is identified by a property number which indexes into array of getters per type.
EventPropertyGetter	getGetter(int assignedPropertyNumber, EventType eventType) Fast lookup of a getter for a property and type.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VariantPropertyGetterCache

public VariantPropertyGetterCache(EventType[] knownTypes)

Ctor.

Parameters:

knownTypes - types known at cache construction type, may be an empty list for the ANY type variance.

Method Detail

addGetters

public void addGetters(int assignedPropertyNumber,
                       String propertyName)

Adds the getters for a property that is identified by a property number which indexes into array of getters per type.

Parameters:

assignedPropertyNumber - number of property

propertyName - to add

getGetter

public EventPropertyGetter getGetter(int assignedPropertyNumber,
                                     EventType eventType)

Fast lookup of a getter for a property and type.

Parameters:

assignedPropertyNumber - number of property to use as index

eventType - type of underlying event

Returns:

getter