Package io.micronaut.core.annotation

Class AnnotationUtil

java.lang.Object

io.micronaut.core.annotation.AnnotationUtil

@Internal
public class AnnotationUtil
extends Object

Internal utility methods for annotations. For Internal and framework use only. Do not use in application code.

Since:

1.0

Author:

Graeme Rocher

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ANN_AROUND	The around annotation type.
static final String	ANN_AROUND_CONSTRUCT	The around annotation type.
static final String	ANN_INHERITED	The inherited annotation.
static final String	ANN_INTERCEPTOR_BINDING	Name of the interceptor binding type.
static final String	ANN_INTERCEPTOR_BINDING_QUALIFIER	Name of the interceptor binding qualifier type.
static final String	ANN_INTERCEPTOR_BINDINGS	Name of the repeatable interceptor bindings type.
static final String	ANN_INTRODUCTION	The around annotation type.
static final AnnotatedElement	EMPTY_ANNOTATED_ELEMENT	An empty re-usable element.
static final String	INJECT	The meta annotation used for inject declarations.
static final List<String>	INTERNAL_ANNOTATION_NAMES
static final String	KOTLIN_METADATA	Constant for Kotlin metadata.
static final String	NAMED	The meta annotation used for named qualifiers.
static final String	NON_BINDING_ATTRIBUTE	The annotation attribute containing all the attributes marked as non binding.
static final String	NON_NULL	Simple Annotation name used for non-null.
static final String	NULLABLE	Simple Annotation name used for nullable.
static final String	POST_CONSTRUCT	The meta annotation used for post-construct declarations.
static final String	PRE_DESTROY	The meta annotation used for pre-destroy declarations.
static final String	QUALIFIER	The meta annotation used for qualifier declarations.
static final String	SCOPE	The meta annotation used for scope declarations.
static final String	SINGLETON	The meta annotation used for singleton scope.
static final List<String>	STEREOTYPE_EXCLUDES	Packages excludes from stereotype processing.
static final AnnotatedElement[]	ZERO_ANNOTATED_ELEMENTS	Constant indicating an zero annotation.
static final AnnotationValue<?>[]	ZERO_ANNOTATION_VALUES	Constant indicating an zero annotation values.
static final Annotation[]	ZERO_ANNOTATIONS	Constant indicating an zero annotation.

Constructor Summary

Constructors

Constructor	Description
AnnotationUtil()

Method Summary

Modifier and Type	Method	Description
static boolean	areEqual(Object o1, Object o2)	Computes whether 2 annotation values are equal.
static int	calculateHashCode(Map<? extends CharSequence,Object> values)	Calculates the hash code of annotation values.
static Optional<String>	findQualifierAnnotation(AnnotationMetadata annotationMetadata)	Finds a qualifier annotation.
static List<AnnotationValue<Annotation>>	findQualifierAnnotations(AnnotationMetadata annotationMetadata)	Finds qualifier annotations.
static List<String>	findQualifierAnnotationsNames(AnnotationMetadata annotationMetadata)	Finds qualifier annotations names.
static boolean	hasDeclaredQualifierAnnotation(AnnotationMetadata annotationMetadata)	Has qualifier annotations.
static List<String>	internListOf(Object... objects)	Converts the given objects into a set of potentially cached and interned strings contained within an internal pool of lists.
static Map<String,Object>	internMapOf(Object... values)	Converts the given objects into a map of potentially cached and interned strings where the keys and values are alternating entries in the passed array.
static Map<String,Object>	internMapOf(String key, Object value)	Converts the given objects into a map of potentially cached and interned strings where the keys and values are alternating entries in the passed array.
static Map<String,Object>	mapOf(Object... array)	Create a new immutable Map from an array of values.
static Map<String,Object>	mapOf(String key1, Object value1)	Create a new immutable Map.
static Map<String,Object>	mapOf(String key1, Object value1, String key2, Object value2)	Create a new immutable Map.
static Map<String,Object>	mapOf(String key1, Object value1, String key2, Object value2, String key3, Object value3)	Create a new immutable Map.
static Map<String,Object>	mapOf(String key1, Object value1, String key2, Object value2, String key3, Object value3, String key4, Object value4)	Create a new immutable Map.
static Map<String,Object>	mapOf(String key1, Object value1, String key2, Object value2, String key3, Object value3, String key4, Object value4, String key5, Object value5)	Create a new immutable Map.
static Map<String,Object>	mapOf(String key1, Object value1, String key2, Object value2, String key3, Object value3, String key4, Object value4, String key5, Object value5, String key6, Object value6)	Create a new immutable Map.
static Map<String,Object>	mapOf(String key1, Object value1, String key2, Object value2, String key3, Object value3, String key4, Object value4, String key5, Object value5, String key6, Object value6, String key7, Object value7)	Create a new immutable Map.
static Map<String,Object>	mapOf(String key1, Object value1, String key2, Object value2, String key3, Object value3, String key4, Object value4, String key5, Object value5, String key6, Object value6, String key7, Object value7, String key8, Object value8)	Create a new immutable Map.
static Map<String,Object>	mapOf(String key1, Object value1, String key2, Object value2, String key3, Object value3, String key4, Object value4, String key5, Object value5, String key6, Object value6, String key7, Object value7, String key8, Object value8, String key9, Object value9)	Create a new immutable Map.
static Map<String,Object>	mapOf(String key1, Object value1, String key2, Object value2, String key3, Object value3, String key4, Object value4, String key5, Object value5, String key6, Object value6, String key7, Object value7, String key8, Object value8, String key9, Object value9, String key10, Object value10)	Create a new immutable Map.
static String[]	resolveNonBindingMembers(AnnotationMetadata annotationMetadata)	Resolve non-binding members.

Methods inherited from class java.lang.Object

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

Field Details

KOTLIN_METADATA

public static final String KOTLIN_METADATA

Constant for Kotlin metadata.

See Also:

• Constant Field Values

INTERNAL_ANNOTATION_NAMES

public static final List<String> INTERNAL_ANNOTATION_NAMES

STEREOTYPE_EXCLUDES

public static final List<String> STEREOTYPE_EXCLUDES

Packages excludes from stereotype processing.

ZERO_ANNOTATIONS

public static final Annotation[] ZERO_ANNOTATIONS

Constant indicating an zero annotation.

ZERO_ANNOTATED_ELEMENTS

public static final AnnotatedElement[] ZERO_ANNOTATED_ELEMENTS

Constant indicating an zero annotation.

ZERO_ANNOTATION_VALUES

public static final AnnotationValue<?>[] ZERO_ANNOTATION_VALUES

Constant indicating an zero annotation values.

EMPTY_ANNOTATED_ELEMENT

public static final AnnotatedElement EMPTY_ANNOTATED_ELEMENT

An empty re-usable element.

NULLABLE

public static final String NULLABLE

Simple Annotation name used for nullable.

See Also:

• Constant Field Values

NON_NULL

public static final String NON_NULL

Simple Annotation name used for non-null.

See Also:

• Constant Field Values

ANN_AROUND

public static final String ANN_AROUND

The around annotation type.

See Also:

• Constant Field Values

ANN_AROUND_CONSTRUCT

public static final String ANN_AROUND_CONSTRUCT

The around annotation type.

See Also:

• Constant Field Values

ANN_INTRODUCTION

public static final String ANN_INTRODUCTION

The around annotation type.

See Also:

• Constant Field Values

ANN_INTERCEPTOR_BINDING

public static final String ANN_INTERCEPTOR_BINDING

Name of the interceptor binding type.

See Also:

• Constant Field Values

ANN_INTERCEPTOR_BINDING_QUALIFIER

public static final String ANN_INTERCEPTOR_BINDING_QUALIFIER

Name of the interceptor binding qualifier type.

See Also:

• Constant Field Values

ANN_INTERCEPTOR_BINDINGS

public static final String ANN_INTERCEPTOR_BINDINGS

Name of the repeatable interceptor bindings type.

See Also:

• Constant Field Values

INJECT

public static final String INJECT

The meta annotation used for inject declarations.

See Also:

• Constant Field Values

SCOPE

public static final String SCOPE

The meta annotation used for scope declarations.

See Also:

• Constant Field Values

SINGLETON

public static final String SINGLETON

The meta annotation used for singleton scope.

See Also:

• Constant Field Values

QUALIFIER

public static final String QUALIFIER

The meta annotation used for qualifier declarations.

See Also:

• Constant Field Values

NAMED

public static final String NAMED

The meta annotation used for named qualifiers.

See Also:

• Constant Field Values

PRE_DESTROY

public static final String PRE_DESTROY

The meta annotation used for pre-destroy declarations.

See Also:

• Constant Field Values

POST_CONSTRUCT

public static final String POST_CONSTRUCT

The meta annotation used for post-construct declarations.

See Also:

• Constant Field Values

NON_BINDING_ATTRIBUTE

public static final String NON_BINDING_ATTRIBUTE

The annotation attribute containing all the attributes marked as non binding.

See Also:

• Constant Field Values

ANN_INHERITED

public static final String ANN_INHERITED

The inherited annotation.

Constructor Details

AnnotationUtil

public AnnotationUtil()

Method Details

findQualifierAnnotations

public static List<AnnotationValue<Annotation>> findQualifierAnnotations(AnnotationMetadata annotationMetadata)

Finds qualifier annotations.

Parameters:

annotationMetadata - The annotation metadata

Returns:

The qualifier annotations

Since:

4.0.0

findQualifierAnnotationsNames

public static List<String> findQualifierAnnotationsNames(AnnotationMetadata annotationMetadata)

Finds qualifier annotations names.

Parameters:

annotationMetadata - The annotation metadata

Returns:

The qualifier annotations names

Since:

4.0.0

hasDeclaredQualifierAnnotation

public static boolean hasDeclaredQualifierAnnotation(AnnotationMetadata annotationMetadata)

Has qualifier annotations.

Parameters:

annotationMetadata - The annotation metadata

Returns:

True if qualifier annotation

Since:

4.0.0

resolveNonBindingMembers

public static String[] resolveNonBindingMembers(AnnotationMetadata annotationMetadata)

Resolve non-binding members.

Parameters:

annotationMetadata - The annotation metadata

Returns:

The non-binding members

Since:

4.0.0

findQualifierAnnotation

public static Optional<String> findQualifierAnnotation(AnnotationMetadata annotationMetadata)

Finds a qualifier annotation.

Parameters:

annotationMetadata - The annotation metadata

Returns:

A qualifier annotation

Since:

4.0.0

internListOf

public static List<String> internListOf(Object... objects)

Converts the given objects into a set of potentially cached and interned strings contained within an internal pool of lists. See String.intern().

This method serves the purpose of reducing memory footprint by pooling common lists of annotations in compiled AnnotationMetadata

Parameters:

objects - The objects

Returns:

A unmodifiable, pooled set of strings

internMapOf

public static Map<String,Object> internMapOf(Object... values)

Converts the given objects into a map of potentially cached and interned strings where the keys and values are alternating entries in the passed array. See String.intern().

The values stored at even number positions will be converted to strings and interned.

Parameters:

values - The objects

Returns:

An unmodifiable set of strings

See Also:

• CollectionUtils.mapOf(Object...)

internMapOf

public static Map<String,Object> internMapOf(String key,
 Object value)

Converts the given objects into a map of potentially cached and interned strings where the keys and values are alternating entries in the passed array. See String.intern().

The values stored at even number positions will be converted to strings and interned.

Parameters:

key - The key

value - The value

Returns:

An unmodifiable set of strings

Since:

3.0

mapOf

public static Map<String,Object> mapOf(Object... array)

Create a new immutable Map from an array of values. String values must be sorted!

Parameters:

array - The key, value array

Returns:

The created map

mapOf

public static Map<String,Object> mapOf(String key1,
 Object value1)

Create a new immutable Map. String values must be sorted!

Parameters:

key1 - The key 1

value1 - The value 1

Returns:

The created map

mapOf

public static Map<String,Object> mapOf(String key1,
 Object value1,
 String key2,
 Object value2)

Create a new immutable Map. String values must be sorted!

Parameters:

key1 - The key1

value1 - The value1

key2 - The key2

value2 - The value2

Returns:

The created map

mapOf

public static Map<String,Object> mapOf(String key1,
 Object value1,
 String key2,
 Object value2,
 String key3,
 Object value3)

Create a new immutable Map. String values must be sorted!

Parameters:

key1 - The key1

value1 - The value1

key2 - The key2

value2 - The value2

key3 - The key3

value3 - The value3

Returns:

The created map

mapOf

public static Map<String,Object> mapOf(String key1,
 Object value1,
 String key2,
 Object value2,
 String key3,
 Object value3,
 String key4,
 Object value4)

Create a new immutable Map. String values must be sorted!

Parameters:

key1 - The key1

value1 - The value1

key2 - The key2

value2 - The value2

key3 - The key3

value3 - The value3

key4 - The key4

value4 - The value4

Returns:

The created map

mapOf

public static Map<String,Object> mapOf(String key1,
 Object value1,
 String key2,
 Object value2,
 String key3,
 Object value3,
 String key4,
 Object value4,
 String key5,
 Object value5)

Create a new immutable Map. String values must be sorted!

Parameters:

key1 - The key1

value1 - The value1

key2 - The key2

value2 - The value2

key3 - The key3

value3 - The value3

key4 - The key4

value4 - The value4

key5 - The key5

value5 - The value5

Returns:

The created map

mapOf

public static Map<String,Object> mapOf(String key1,
 Object value1,
 String key2,
 Object value2,
 String key3,
 Object value3,
 String key4,
 Object value4,
 String key5,
 Object value5,
 String key6,
 Object value6)

Create a new immutable Map. String values must be sorted!

Parameters:

key1 - The key1

value1 - The value1

key2 - The key2

value2 - The value2

key3 - The key3

value3 - The value3

key4 - The key4

value4 - The value4

key5 - The key5

value5 - The value5

key6 - The key6

value6 - The value6

Returns:

The created map

mapOf

public static Map<String,Object> mapOf(String key1,
 Object value1,
 String key2,
 Object value2,
 String key3,
 Object value3,
 String key4,
 Object value4,
 String key5,
 Object value5,
 String key6,
 Object value6,
 String key7,
 Object value7)

Create a new immutable Map. String values must be sorted!

Parameters:

key1 - The key1

value1 - The value1

key2 - The key2

value2 - The value2

key3 - The key3

value3 - The value3

key4 - The key4

value4 - The value4

key5 - The key5

value5 - The value5

key6 - The key6

value6 - The value6

key7 - The key7

value7 - The value7

Returns:

The created map

mapOf

public static Map<String,Object> mapOf(String key1,
 Object value1,
 String key2,
 Object value2,
 String key3,
 Object value3,
 String key4,
 Object value4,
 String key5,
 Object value5,
 String key6,
 Object value6,
 String key7,
 Object value7,
 String key8,
 Object value8)

Create a new immutable Map. String values must be sorted!

Parameters:

key1 - The key1

value1 - The value1

key2 - The key2

value2 - The value2

key3 - The key3

value3 - The value3

key4 - The key4

value4 - The value4

key5 - The key5

value5 - The value5

key6 - The key6

value6 - The value6

key7 - The key7

value7 - The value7

key8 - The key8

value8 - The value8

Returns:

The created map

mapOf

public static Map<String,Object> mapOf(String key1,
 Object value1,
 String key2,
 Object value2,
 String key3,
 Object value3,
 String key4,
 Object value4,
 String key5,
 Object value5,
 String key6,
 Object value6,
 String key7,
 Object value7,
 String key8,
 Object value8,
 String key9,
 Object value9)

Create a new immutable Map. String values must be sorted!

Parameters:

key1 - The key1

value1 - The value1

key2 - The key2

value2 - The value2

key3 - The key3

value3 - The value3

key4 - The key4

value4 - The value4

key5 - The key5

value5 - The value5

key6 - The key6

value6 - The value6

key7 - The key7

value7 - The value7

key8 - The key8

value8 - The value8

key9 - The key9

value9 - The value9

Returns:

The created map

mapOf

public static Map<String,Object> mapOf(String key1,
 Object value1,
 String key2,
 Object value2,
 String key3,
 Object value3,
 String key4,
 Object value4,
 String key5,
 Object value5,
 String key6,
 Object value6,
 String key7,
 Object value7,
 String key8,
 Object value8,
 String key9,
 Object value9,
 String key10,
 Object value10)

Create a new immutable Map. String values must be sorted!

Parameters:

key1 - The key1

value1 - The value1

key2 - The key2

value2 - The value2

key3 - The key3

value3 - The value3

key4 - The key4

value4 - The value4

key5 - The key5

value5 - The value5

key6 - The key6

value6 - The value6

key7 - The key7

value7 - The value7

key8 - The key8

value8 - The value8

key9 - The key9

value9 - The value9

key10 - The key10

value10 - The value10

Returns:

The created map

calculateHashCode

public static int calculateHashCode(Map<? extends CharSequence,Object> values)

Calculates the hash code of annotation values.

Parameters:

values - The map to calculate values' hash code

Returns:

The hash code

areEqual

public static boolean areEqual(Object o1,
 Object o2)

Computes whether 2 annotation values are equal.

Parameters:

o1 - One object

o2 - Another object

Returns:

Whether both objects are equal