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public interface EventPropertyGetter
Get property values from an event instance for a given event property.
Instances that implement this interface are usually bound to a particular EventType
and cannot
be used to access EventBean
instances of a different type.
Method Summary | |
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Object |
get(EventBean eventBean)
Return the value for the property in the event object specified when the instance was obtained. |
boolean |
isExistsProperty(EventBean eventBean)
Returns true if the property exists, or false if the type does not have such a property. |
Method Detail |
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Object get(EventBean eventBean) throws PropertyAccessException
eventBean
- is the event to get the value of a property from
PropertyAccessException
- to indicate that property access failedboolean isExistsProperty(EventBean eventBean)
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
eventBean
- is the event to check if the dynamic property exists
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