public abstract class DynamicPropertyGetterBase extends java.lang.Object implements BeanEventPropertyGetter
Constructor and Description |
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DynamicPropertyGetterBase(EventAdapterService eventAdapterService)
Ctor.
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Modifier and Type | Method and Description |
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java.lang.Object |
get(EventBean obj)
Return the value for the property in the event object specified when the instance was obtained.
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java.lang.Object |
getBeanProp(java.lang.Object object)
Returns the property as an object.
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java.lang.Object |
getFragment(EventBean eventBean)
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boolean |
isBeanExistsProperty(java.lang.Object object)
Returns true if the dynamic property exists.
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boolean |
isExistsProperty(EventBean eventBean)
Returns true if the property exists, or false if the type does not have such a property.
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public DynamicPropertyGetterBase(EventAdapterService eventAdapterService)
eventAdapterService
- factory for event beans and event typespublic java.lang.Object getBeanProp(java.lang.Object object) throws PropertyAccessException
BeanEventPropertyGetter
getBeanProp
in interface BeanEventPropertyGetter
object
- to evaluatePropertyAccessException
- if access failedpublic boolean isBeanExistsProperty(java.lang.Object object)
BeanEventPropertyGetter
isBeanExistsProperty
in interface BeanEventPropertyGetter
object
- to evaluatepublic final java.lang.Object get(EventBean obj) throws PropertyAccessException
EventPropertyGetter
get
in interface EventPropertyGetter
obj
- is the event to get the value of a property fromPropertyAccessException
- to indicate that property access failedpublic boolean isExistsProperty(EventBean eventBean)
EventPropertyGetter
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
isExistsProperty
in interface EventPropertyGetter
eventBean
- is the event to check if the dynamic property existspublic java.lang.Object getFragment(EventBean eventBean)
EventPropertyGetter
EventBean
or array of EventBean
for a property name or property expression.
For use with properties whose value is itself an event or whose value can be represented as an event by the underlying event representation.
The EventType
of the EventBean
instance(s) returned by this method can be determined by
EventType.getFragmentType(String)
. Use EventPropertyDescriptor
to
obtain a list of properties that return fragments from an event type.
Returns null if the property value is null or the property value cannot be represented as a fragment by the underlying representation.
getFragment
in interface EventPropertyGetter
eventBean
- is the event to get the fragment value of a property