com.espertech.esper.event.arr

Class ObjectArrayArrayPOJOEntryIndexedPropertyGetter

java.lang.Object

com.espertech.esper.event.bean.BaseNativePropertyGetter

com.espertech.esper.event.arr.ObjectArrayArrayPOJOEntryIndexedPropertyGetter

All Implemented Interfaces:

EventPropertyGetter, EventPropertyGetterIndexed, ObjectArrayEventPropertyGetter, ObjectArrayEventPropertyGetterAndIndexed

public class ObjectArrayArrayPOJOEntryIndexedPropertyGetter
extends BaseNativePropertyGetter
implements ObjectArrayEventPropertyGetterAndIndexed

A getter that works on arrays residing within a Map as an event property.

Constructor Summary

Constructors

Constructor and Description
ObjectArrayArrayPOJOEntryIndexedPropertyGetter(int propertyIndex, int index, EventAdapterService eventAdapterService, Class returnType) Ctor.

Method Summary

Modifier and Type	Method and Description
Object	get(EventBean obj) Return the value for the property in the event object specified when the instance was obtained.
Object	get(EventBean eventBean, int index) Return the value for the property in the event object specified when the instance was obtained.
Object	getArrayInternal(Object[] array, int index)
Object	getObjectArray(Object[] array) Returns a property of an event.
boolean	isExistsProperty(EventBean eventBean) Returns true if the property exists, or false if the type does not have such a property.
boolean	isObjectArrayExistsProperty(Object[] array) Exists-function for properties in a object array-type event.

Methods inherited from class com.espertech.esper.event.bean.BaseNativePropertyGetter

getFragment, getFragmentDynamic

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.espertech.esper.client.EventPropertyGetter

getFragment

Constructor Detail

ObjectArrayArrayPOJOEntryIndexedPropertyGetter

public ObjectArrayArrayPOJOEntryIndexedPropertyGetter(int propertyIndex,
                                                      int index,
                                                      EventAdapterService eventAdapterService,
                                                      Class returnType)

Ctor.

Parameters:

index - the index to fetch the array element for

eventAdapterService - factory for event beans and event types

returnType - type of the entry returned

propertyIndex - property num

Method Detail

getObjectArray

public Object getObjectArray(Object[] array)
                      throws PropertyAccessException

Description copied from interface: ObjectArrayEventPropertyGetter

Returns a property of an event.

Specified by:

getObjectArray in interface ObjectArrayEventPropertyGetter

Parameters:

array - to interrogate

Returns:

property value

Throws:

PropertyAccessException - for property access errors

getArrayInternal

public Object getArrayInternal(Object[] array,
                               int index)
                        throws PropertyAccessException

Throws:

PropertyAccessException

isObjectArrayExistsProperty

public boolean isObjectArrayExistsProperty(Object[] array)

Description copied from interface: ObjectArrayEventPropertyGetter

Exists-function for properties in a object array-type event.

Specified by:

isObjectArrayExistsProperty in interface ObjectArrayEventPropertyGetter

Parameters:

array - to interrogate

Returns:

indicator

get

public Object get(EventBean eventBean,
                  int index)
           throws PropertyAccessException

Description copied from interface: EventPropertyGetterIndexed

Return the value for the property in the event object specified when the instance was obtained. Useful for fast access to event properties. Throws a PropertyAccessException if the getter instance doesn't match the EventType it was obtained from, and to indicate other property access problems.

Specified by:

get in interface EventPropertyGetterIndexed

Parameters:

eventBean - is the event to get the value of a property from

index - the index value

Returns:

value of indexed property in event

Throws:

PropertyAccessException - to indicate that property access failed

get

public Object get(EventBean obj)

Description copied from interface: EventPropertyGetter

Return the value for the property in the event object specified when the instance was obtained. Useful for fast access to event properties. Throws a PropertyAccessException if the getter instance doesn't match the EventType it was obtained from, and to indicate other property access problems.

Specified by:

get in interface EventPropertyGetter

Parameters:

obj - is the event to get the value of a property from

Returns:

value of property in event

isExistsProperty

public boolean isExistsProperty(EventBean eventBean)

Description copied from interface: EventPropertyGetter

Returns true if the property exists, or false if the type does not have such a property.

Useful for dynamic properties of the syntax "property?" and the dynamic nested/indexed/mapped versions. Dynamic nested properties follow the syntax "property?.nested" which is equivalent to "property?.nested?". If any of the properties in the path of a dynamic nested property return null, the dynamic nested property does not exists and the method returns false.

For non-dynamic properties, this method always returns true since a getter would not be available unless

Specified by:

isExistsProperty in interface EventPropertyGetter

Parameters:

eventBean - is the event to check if the dynamic property exists

Returns:

indictor whether the property exists, always true for non-dynamic (default) properties