com.atlassian.confluence.velocity.introspection

Class AnnotationBoxingUberspect

java.lang.Object

org.apache.velocity.util.introspection.UberspectImpl

com.atlassian.confluence.velocity.introspection.AnnotationBoxingUberspect

All Implemented Interfaces:

org.apache.velocity.util.introspection.Uberspect, org.apache.velocity.util.introspection.UberspectLoggable, org.apache.velocity.util.RuntimeServicesAware

Direct Known Subclasses:

ConfluenceAnnotationBoxingUberspect

public class AnnotationBoxingUberspect
extends org.apache.velocity.util.introspection.UberspectImpl

A Velocity uberspect that boxes return values in an annotated form and unboxes them again when used as arguments to or targets of method calls

More specifically this uberspect will inspect any target method call or property for annotations that are marked as ReturnValueAnnotations and box the result of calling or accessing the target with these annotations.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.velocity.util.introspection.UberspectImpl

org.apache.velocity.util.introspection.UberspectImpl.VelGetterImpl, org.apache.velocity.util.introspection.UberspectImpl.VelMethodImpl, org.apache.velocity.util.introspection.UberspectImpl.VelSetterImpl

Field Summary

Fields inherited from class org.apache.velocity.util.introspection.UberspectImpl

EMPTY_ARRAY, introspector, runtimeServices

Constructor Summary

Constructors

Constructor and Description
AnnotationBoxingUberspect()

Method Summary

Modifier and Type	Method and Description
protected Class	getClassForTargetObject(Object targetObject) Template method for returning the actual concrete class of a the provided object.
Iterator	getIterator(Object obj, org.apache.velocity.util.introspection.Info info) Get an iterator responsible for preserving annotations while iterating over a collection that has collection inheritable return value annotations.'
org.apache.velocity.util.introspection.VelMethod	getMethod(Object obj, String methodName, Object[] args, org.apache.velocity.util.introspection.Info info) Return a method that knows how to unbox method call targets and parameters and to box return values according to the return value boxing policy.
protected Collection<Annotation>	getMethodAnnotations(Method method) Retrieve any annotations on the supplied method that are meta-annotated as a ReturnValueAnnotation
org.apache.velocity.util.introspection.VelPropertyGet	getPropertyGet(Object obj, String identifier, org.apache.velocity.util.introspection.Info info) Get a property getting strategy that will box the end result with any return value annotations on the property getter
void	init()

Methods inherited from class org.apache.velocity.util.introspection.UberspectImpl

getPropertySet, setLog, setRuntimeLogger, setRuntimeServices

Methods inherited from class java.lang.Object

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

Constructor Detail

AnnotationBoxingUberspect

public AnnotationBoxingUberspect()

Method Detail

init

public void init()
          throws Exception

Specified by:

init in interface org.apache.velocity.util.introspection.Uberspect

Overrides:

init in class org.apache.velocity.util.introspection.UberspectImpl

Throws:

Exception

getMethod

public final org.apache.velocity.util.introspection.VelMethod getMethod(Object obj,
                                                                        String methodName,
                                                                        Object[] args,
                                                                        org.apache.velocity.util.introspection.Info info)
                                                                 throws Exception

Return a method that knows how to unbox method call targets and parameters and to box return values according to the return value boxing policy.

Specified by:

getMethod in interface org.apache.velocity.util.introspection.Uberspect

Overrides:

getMethod in class org.apache.velocity.util.introspection.UberspectImpl

Parameters:

obj - Object to locate the method on

methodName - Name of the method to locate

args - Method call arguments

info - Current template info

Returns:

Method calling strategy that will transparently handle boxed arguments and targets while automatically boxing method return values with return value annotations.

Throws:

Exception

getIterator

public final Iterator getIterator(Object obj,
                                  org.apache.velocity.util.introspection.Info info)
                           throws Exception

Get an iterator responsible for preserving annotations while iterating over a collection that has collection inheritable return value annotations.'

Specified by:

getIterator in interface org.apache.velocity.util.introspection.Uberspect

Overrides:

getIterator in class org.apache.velocity.util.introspection.UberspectImpl

Parameters:

obj - object to get an iterator for

info - current template info

Returns:

Inheritable annotation preserving iterator

Throws:

Exception

getPropertyGet

public final org.apache.velocity.util.introspection.VelPropertyGet getPropertyGet(Object obj,
                                                                                  String identifier,
                                                                                  org.apache.velocity.util.introspection.Info info)
                                                                           throws Exception

Get a property getting strategy that will box the end result with any return value annotations on the property getter

Specified by:

getPropertyGet in interface org.apache.velocity.util.introspection.Uberspect

Overrides:

getPropertyGet in class org.apache.velocity.util.introspection.UberspectImpl

Parameters:

obj - Object on which a property is being retrieved

identifier - Property identifier

info - Current template info

Returns:

A return value boxing property getter

Throws:

Exception

getMethodAnnotations

protected Collection<Annotation> getMethodAnnotations(Method method)

Retrieve any annotations on the supplied method that are meta-annotated as a ReturnValueAnnotation

Parameters:

method - Method to search

Returns:

Collection of annotations that have been marked as a ReturnValueAnnotation on the provided method.

getClassForTargetObject

protected Class getClassForTargetObject(Object targetObject)

Template method for returning the actual concrete class of a the provided object.

This method should be overridden in environments where objects may be proxied in such a way that method annotations are not reflected by the proxying object class.

This implementation simply returns targetObject.getClass()

Parameters:

targetObject - The object for which the class is being queried

Returns:

The actual class that should be queried for return value annotations