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public interface RoundEnvironment
An annotation processing tool framework will provide an annotation processor with an object implementing this interface so that the processor can query for information about a round of annotation processing.- Since:
- 1.6
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Method Summary
All Methods Instance Methods Abstract Methods Default Methods Modifier and Type Method Description boolean
errorRaised()
Returnstrue
if an error was raised in the prior round of processing; returnsfalse
otherwise.Set<? extends Element>
getElementsAnnotatedWith(Class<? extends Annotation> a)
Returns the elements annotated with the given annotation type.Set<? extends Element>
getElementsAnnotatedWith(TypeElement a)
Returns the elements annotated with the given annotation type.default Set<? extends Element>
getElementsAnnotatedWithAny(Set<Class<? extends Annotation>> annotations)
Returns the elements annotated with one or more of the given annotation types.default Set<? extends Element>
getElementsAnnotatedWithAny(TypeElement... annotations)
Returns the elements annotated with one or more of the given annotation types.Set<? extends Element>
getRootElements()
Returns the root elements for annotation processing generated by the prior round.boolean
processingOver()
Returnstrue
if types generated by this round will not be subject to a subsequent round of annotation processing; returnsfalse
otherwise.
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Method Detail
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processingOver
boolean processingOver()
Returnstrue
if types generated by this round will not be subject to a subsequent round of annotation processing; returnsfalse
otherwise.- Returns:
true
if types generated by this round will not be subject to a subsequent round of annotation processing; returnsfalse
otherwise
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errorRaised
boolean errorRaised()
Returnstrue
if an error was raised in the prior round of processing; returnsfalse
otherwise.- Returns:
true
if an error was raised in the prior round of processing; returnsfalse
otherwise
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getRootElements
Set<? extends Element> getRootElements()
Returns the root elements for annotation processing generated by the prior round.- Returns:
- the root elements for annotation processing generated by the prior round, or an empty set if there were none
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getElementsAnnotatedWith
Set<? extends Element> getElementsAnnotatedWith(TypeElement a)
Returns the elements annotated with the given annotation type. The annotation may appear directly or be inherited. Only package elements, module elements, and type elements included in this round of annotation processing, or declarations of members, constructors, parameters, or type parameters declared within those, are returned. Included type elements are root types and any member types nested within them. Elements of a package are not considered included simply because apackage-info
file for that package was created. Likewise, elements of a module are not considered included simply because amodule-info
file for that module was created- Parameters:
a
- annotation type being requested- Returns:
- the elements annotated with the given annotation type, or an empty set if there are none
- Throws:
IllegalArgumentException
- if the argument does not represent an annotation type
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getElementsAnnotatedWithAny
default Set<? extends Element> getElementsAnnotatedWithAny(TypeElement... annotations)
Returns the elements annotated with one or more of the given annotation types.- API Note:
- This method may be useful when processing repeating annotations by looking for an annotation type and its containing annotation type at the same time.
- Implementation Requirements:
- The default implementation of this method creates an
empty result set, iterates over the annotations in the argument
array calling
getElementsAnnotatedWith(TypeElement)
on each annotation and adding those results to the result set. Finally, the contents of the result set are returned as an unmodifiable set. - Parameters:
annotations
- annotation types being requested- Returns:
- the elements annotated with one or more of the given annotation types, or an empty set if there are none
- Throws:
IllegalArgumentException
- if the any elements of the argument set do not represent an annotation type- Since:
- 9
- See The Java™ Language Specification:
- 9.6.3 Repeatable Annotation Types
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getElementsAnnotatedWith
Set<? extends Element> getElementsAnnotatedWith(Class<? extends Annotation> a)
Returns the elements annotated with the given annotation type. The annotation may appear directly or be inherited. Only package elements, module elements, and type elements included in this round of annotation processing, or declarations of members, constructors, parameters, or type parameters declared within those, are returned. Included type elements are root types and any member types nested within them. Elements in a package are not considered included simply because apackage-info
file for that package was created. Likewise, elements of a module are not considered included simply because amodule-info
file for that module was created- Parameters:
a
- annotation type being requested- Returns:
- the elements annotated with the given annotation type, or an empty set if there are none
- Throws:
IllegalArgumentException
- if the argument does not represent an annotation type
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getElementsAnnotatedWithAny
default Set<? extends Element> getElementsAnnotatedWithAny(Set<Class<? extends Annotation>> annotations)
Returns the elements annotated with one or more of the given annotation types.- API Note:
- This method may be useful when processing repeating annotations by looking for an annotation type and its containing annotation type at the same time.
- Implementation Requirements:
- The default implementation of this method creates an
empty result set, iterates over the annotations in the argument
set calling
getElementsAnnotatedWith(Class)
on each annotation and adding those results to the result set. Finally, the contents of the result set are returned as an unmodifiable set. - Parameters:
annotations
- annotation types being requested- Returns:
- the elements annotated with one or more of the given annotation types, or an empty set if there are none
- Throws:
IllegalArgumentException
- if the any elements of the argument set do not represent an annotation type- Since:
- 9
- See The Java™ Language Specification:
- 9.6.3 Repeatable Annotation Types
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