Package io.micronaut.aop.chain

Class MethodInterceptorChain<T,R>

java.lang.Object

io.micronaut.aop.chain.InterceptorChain<T,R>

io.micronaut.aop.chain.MethodInterceptorChain<T,R>

Type Parameters:

T - type

R - result

All Implemented Interfaces:

InvocationContext<T,R>, MethodInvocationContext<T,R>, AnnotatedElement, AnnotationMetadata, AnnotationMetadataDelegate, AnnotationMetadataProvider, AnnotationSource, AttributeHolder, MutableAttributeHolder, Described, Named, Executable<T,R>, ExecutableMethod<T,R>, MethodReference<T,R>

@Internal
public final class MethodInterceptorChain<T,R>
extends InterceptorChain<T,R>
implements MethodInvocationContext<T,R>

An internal representation of the Interceptor chain. This class implements MethodInvocationContext and is consumed by the framework itself and should not be used directly in application code.

Since:

1.0

Author:

Graeme Rocher

Field Summary

Fields

Modifier and Type	Field	Description
protected MutableConvertibleValues<Object>	attributes
protected int	index
protected final int	interceptorCount
protected final Interceptor<T,R>[]	interceptors
protected static final org.slf4j.Logger	LOG	Used by subclasses!
protected final Object[]	originalParameters
protected Map<String,MutableArgumentValue<?>>	parameters

Fields inherited from class io.micronaut.aop.chain.InterceptorChain

executionHandle, target

Fields inherited from interface io.micronaut.core.annotation.AnnotationMetadata

CLASS_NAME_SUFFIX, EMPTY_METADATA, VALUE_MEMBER

Fields inherited from interface io.micronaut.core.annotation.AnnotationSource

EMPTY

Constructor Summary

Constructors

Constructor	Description
MethodInterceptorChain(Interceptor<T,R>[] interceptors, T target, ExecutableMethod<T,R> executionHandle)	Constructor for empty parameters.
MethodInterceptorChain(Interceptor<T,R>[] interceptors, T target, ExecutableMethod<T,R> executionHandle, @Nullable InterceptorKind kind)	Constructor for empty parameters.
MethodInterceptorChain(Interceptor<T,R>[] interceptors, T target, ExecutableMethod<T,R> executionHandle, Object... originalParameters)	Constructor.

Method Summary

Modifier and Type	Method	Description
static <T1> T1	dispose(@NonNull BeanResolutionContext resolutionContext, @NonNull BeanContext beanContext, @NonNull BeanDefinition<T1> definition, @NonNull ExecutableMethod<T1,T1> preDestroyMethod, T1 bean)	Internal method that handles the logic for executing InterceptorKind.PRE_DESTROY interception.
Class<?>[]	getArgumentTypes()
@NonNull MutableConvertibleValues<Object>	getAttributes()	Overrides the default AttributeHolder.getAttributes() method to return a mutable object.
@NonNull Class<T>	getDeclaringType()
@NonNull ExecutableMethod<T,R>	getExecutableMethod()	The underlying ExecutableMethod reference.
@NonNull InterceptorKind	getKind()
String	getMethodName()
@NonNull Map<String,MutableArgumentValue<?>>	getParameters()	Returns the current parameters as a map of mutable argument values.
@NonNull Object[]	getParameterValues()	Returns the current state of the parameters as an array by parameter index.
ReturnType<R>	getReturnType()
Method	getTargetMethod()
static <T1> T1	initialize(@NonNull BeanResolutionContext resolutionContext, @NonNull BeanContext beanContext, @NonNull BeanDefinition<T1> definition, @NonNull ExecutableMethod<T1,T1> postConstructMethod, T1 bean)	Internal method that handles the logic for executing InterceptorKind.POST_CONSTRUCT interception.
R	invoke(T instance, Object... arguments)	Invokes the method.
boolean	isAbstract()	Defines whether the method is abstract.
boolean	isSuspend()	Defines whether the method is Kotlin suspend function.
R	proceed()	Proceeds with the invocation.
R	proceed(@NonNull Interceptor from)	Proceeds with the invocation using the given interceptor as a position to start from.
protected static @NonNull Collection<AnnotationValue<?>>	resolveInterceptorValues(@NonNull AnnotationMetadata annotationMetadata, @NonNull InterceptorKind kind)	Resolve interceptor binding for the given annotation metadata and kind.
String	toString()

Methods inherited from class io.micronaut.aop.chain.InterceptorChain

getAnnotationMetadata, getArguments, getTarget, resolveAroundInterceptors, resolveAroundInterceptors, resolveAroundInterceptors, resolveIntroductionInterceptors, resolveIntroductionInterceptors, resolveIntroductionInterceptors

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.micronaut.core.annotation.AnnotatedElement

isDeclaredNonNull, isDeclaredNullable, isNonNull, isNullable

Methods inherited from interface io.micronaut.core.annotation.AnnotationMetadata

enumValuesSet, enumValuesSet, getValues, hasDeclaredStereotype, hasEvaluatedExpressions, hasStereotypeNonRepeating, isAnnotationPresent, isDeclaredAnnotationPresent

Methods inherited from interface io.micronaut.core.annotation.AnnotationMetadataDelegate

booleanValue, booleanValue, booleanValue, booleanValue, classValue, classValue, classValue, classValue, classValues, classValues, classValues, classValues, copyAnnotationMetadata, doubleValue, doubleValue, doubleValue, enumValue, enumValue, enumValue, enumValue, enumValues, enumValues, enumValues, enumValues, findAnnotation, findAnnotation, findDeclaredAnnotation, findDeclaredAnnotation, findRepeatableAnnotation, findRepeatableAnnotation, getAnnotation, getAnnotation, getAnnotationNameByStereotype, getAnnotationNameByStereotype, getAnnotationNames, getAnnotationNamesByStereotype, getAnnotationNamesByStereotype, getAnnotationType, getAnnotationType, getAnnotationTypeByStereotype, getAnnotationTypeByStereotype, getAnnotationTypesByStereotype, getAnnotationTypesByStereotype, getAnnotationTypesByStereotype, getAnnotationValuesByName, getAnnotationValuesByStereotype, getAnnotationValuesByType, getDeclaredAnnotation, getDeclaredAnnotation, getDeclaredAnnotationNameByStereotype, getDeclaredAnnotationNames, getDeclaredAnnotationNamesByStereotype, getDeclaredAnnotationTypeByStereotype, getDeclaredAnnotationTypeByStereotype, getDeclaredAnnotationValuesByName, getDeclaredAnnotationValuesByType, getDeclaredMetadata, getDeclaredStereotypeAnnotationNames, getDefaultValue, getDefaultValue, getDefaultValue, getDefaultValue, getDefaultValues, getStereotypeAnnotationNames, getTargetAnnotationMetadata, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValues, getValues, hasAnnotation, hasAnnotation, hasDeclaredAnnotation, hasDeclaredAnnotation, hasDeclaredStereotype, hasDeclaredStereotype, hasDeclaredStereotype, hasPropertyExpressions, hasSimpleAnnotation, hasSimpleDeclaredAnnotation, hasStereotype, hasStereotype, hasStereotype, hasStereotype, intValue, intValue, intValue, isAnnotationPresent, isDeclaredAnnotationPresent, isEmpty, isFalse, isFalse, isPresent, isPresent, isRepeatableAnnotation, isRepeatableAnnotation, isTrue, isTrue, longValue, longValue, stringValue, stringValue, stringValue, stringValue, stringValues, stringValues, stringValues, stringValues, synthesize, synthesize, synthesizeAll, synthesizeAnnotationsByType, synthesizeDeclared, synthesizeDeclared, synthesizeDeclared, synthesizeDeclaredAnnotationsByType

Methods inherited from interface io.micronaut.core.annotation.AnnotationMetadataProvider

getAnnotationMetadata

Methods inherited from interface io.micronaut.core.attr.AttributeHolder

getAttribute, getAttribute

Methods inherited from interface io.micronaut.core.type.Executable

getArguments

Methods inherited from interface io.micronaut.inject.ExecutableMethod

getDescription, getDescription

Methods inherited from interface io.micronaut.aop.InvocationContext

getParameters, getParameterValueMap, getParameterValues, getTarget, proceed, setAttribute

Methods inherited from interface io.micronaut.inject.MethodReference

getArgumentNames, getArguments, getName

Methods inherited from interface io.micronaut.core.attr.MutableAttributeHolder

getAttributes, removeAttribute

Field Details

LOG

protected static final org.slf4j.Logger LOG

Used by subclasses!

interceptors

protected final Interceptor<T,R>[] interceptors

originalParameters

protected final Object[] originalParameters

interceptorCount

protected final int interceptorCount

attributes

protected volatile MutableConvertibleValues<Object> attributes

index

protected int index

parameters

protected volatile Map<String,MutableArgumentValue<?>> parameters

Constructor Details

MethodInterceptorChain

public MethodInterceptorChain(Interceptor<T,R>[] interceptors,
 T target,
 ExecutableMethod<T,R> executionHandle)

Constructor for empty parameters.

Parameters:

interceptors - array of interceptors

target - target

executionHandle - executionHandle

MethodInterceptorChain

public MethodInterceptorChain(Interceptor<T,R>[] interceptors,
 T target,
 ExecutableMethod<T,R> executionHandle,
 @Nullable
 @Nullable InterceptorKind kind)

Constructor for empty parameters.

Parameters:

interceptors - array of interceptors

target - target

executionHandle - executionHandle

kind - The interception kind

MethodInterceptorChain

public MethodInterceptorChain(Interceptor<T,R>[] interceptors,
 T target,
 ExecutableMethod<T,R> executionHandle,
 Object... originalParameters)

Constructor.

Parameters:

interceptors - array of interceptors

target - target

executionHandle - executionHandle

originalParameters - originalParameters

Method Details

getKind

@NonNull
public @NonNull InterceptorKind getKind()

Specified by:

getKind in interface InvocationContext<T,R>

Returns:

An enum representing the kind of interception that is occurring.

invoke

public R invoke(T instance,
 Object... arguments)

Description copied from interface: Executable

Invokes the method.

Specified by:

invoke in interface Executable<T,R>

Overrides:

invoke in class InterceptorChain<T,R>

Parameters:

instance - The instance. Nullable only if it's a static method call.

arguments - The arguments

Returns:

The result

isSuspend

public boolean isSuspend()

Description copied from interface: ExecutableMethod

Defines whether the method is Kotlin suspend function.

Specified by:

isSuspend in interface ExecutableMethod<T,R>

Specified by:

isSuspend in interface MethodInvocationContext<T,R>

Returns:

Is the method Kotlin suspend function.

isAbstract

public boolean isAbstract()

Description copied from interface: ExecutableMethod

Defines whether the method is abstract.

Specified by:

isAbstract in interface ExecutableMethod<T,R>

Specified by:

isAbstract in interface MethodInvocationContext<T,R>

Returns:

Is the method abstract.

proceed

public R proceed()
          throws RuntimeException

Description copied from interface: InvocationContext

Proceeds with the invocation. If this is the last interceptor in the chain then the final implementation method is invoked

Specified by:

proceed in interface InvocationContext<T,R>

Overrides:

proceed in class InterceptorChain<T,R>

Returns:

The return value of the method

Throws:

RuntimeException - chain may throw RTE

getMethodName

public String getMethodName()

Specified by:

getMethodName in interface MethodReference<T,R>

Returns:

The name of the method

getArgumentTypes

public Class<?>[] getArgumentTypes()

Specified by:

getArgumentTypes in interface MethodReference<T,R>

Returns:

The argument types

getTargetMethod

public Method getTargetMethod()

Specified by:

getTargetMethod in interface MethodReference<T,R>

Returns:

The target method

getReturnType

public ReturnType<R> getReturnType()

Specified by:

getReturnType in interface MethodReference<T,R>

Returns:

Return the return type

getDeclaringType

@NonNull
public @NonNull Class<T> getDeclaringType()

Specified by:

getDeclaringType in interface Executable<T,R>

Specified by:

getDeclaringType in interface InvocationContext<T,R>

Specified by:

getDeclaringType in interface MethodInvocationContext<T,R>

Specified by:

getDeclaringType in interface MethodReference<T,R>

Returns:

The declaring type

toString

public String toString()

Overrides:

toString in class Object

getExecutableMethod

@NonNull
public @NonNull ExecutableMethod<T,R> getExecutableMethod()

Description copied from interface: MethodInvocationContext

The underlying ExecutableMethod reference.

Specified by:

getExecutableMethod in interface MethodInvocationContext<T,R>

Returns:

The underlying method reference.

initialize

@Internal
@NonNull
public static <T1> T1 initialize(@NonNull
 @NonNull BeanResolutionContext resolutionContext,
 @NonNull
 @NonNull BeanContext beanContext,
 @NonNull
 @NonNull BeanDefinition<T1> definition,
 @NonNull
 @NonNull ExecutableMethod<T1,T1> postConstructMethod,
 @NonNull
 T1 bean)

Internal method that handles the logic for executing InterceptorKind.POST_CONSTRUCT interception.

Type Parameters:

T1 - The bean type

Parameters:

resolutionContext - The resolution context

beanContext - The bean context

definition - The definition

postConstructMethod - The post construct method

bean - The bean

Returns:

the bean instance

Since:

3.0.0

dispose

@Internal
@NonNull
public static <T1> T1 dispose(@NonNull
 @NonNull BeanResolutionContext resolutionContext,
 @NonNull
 @NonNull BeanContext beanContext,
 @NonNull
 @NonNull BeanDefinition<T1> definition,
 @NonNull
 @NonNull ExecutableMethod<T1,T1> preDestroyMethod,
 @NonNull
 T1 bean)

Internal method that handles the logic for executing InterceptorKind.PRE_DESTROY interception.

Type Parameters:

T1 - The bean type

Parameters:

resolutionContext - The resolution context

beanContext - The bean context

definition - The definition

preDestroyMethod - The pre destroy method

bean - The bean

Returns:

the bean instance

Since:

3.0.0

getParameterValues

@NonNull
public @NonNull Object[] getParameterValues()

Description copied from interface: InvocationContext

Returns the current state of the parameters as an array by parameter index. Note that mutations to the array have no effect. If you wish to mutate the parameters use InvocationContext.getParameters() and the MutableArgumentValue interface instead

Specified by:

getParameterValues in interface InvocationContext<B,R>

Returns:

The bound ArgumentValue instances

getAttributes

@NonNull
public @NonNull MutableConvertibleValues<Object> getAttributes()

Description copied from interface: MutableAttributeHolder

Overrides the default AttributeHolder.getAttributes() method to return a mutable object.

Specified by:

getAttributes in interface AttributeHolder

Specified by:

getAttributes in interface MutableAttributeHolder

Returns:

The mutable attributes

getParameters

@NonNull
public @NonNull Map<String,MutableArgumentValue<?>> getParameters()

Description copied from interface: InvocationContext

Returns the current parameters as a map of mutable argument values. This method allows mutation of the argument values and is generally more expensive than using InvocationContext.getParameterValues() and Executable.getArguments() directly, hence should be used with care.

Specified by:

getParameters in interface InvocationContext<B,R>

Returns:

The bound ArgumentValue instances

proceed

public R proceed(@NonNull
 @NonNull Interceptor from)
          throws RuntimeException

Description copied from interface: InvocationContext

Proceeds with the invocation using the given interceptor as a position to start from. Mainly useful for Introduction advise where you want to invoke the target multiple times or where you want to repeat the entire chain.

Specified by:

proceed in interface InvocationContext<B,R>

Parameters:

from - The interceptor to start from (note: will not be included in the execution)

Returns:

The return value of the method

Throws:

RuntimeException - chain may throw RTE

resolveInterceptorValues

@NonNull
protected static @NonNull Collection<AnnotationValue<?>> resolveInterceptorValues(@NonNull
 @NonNull AnnotationMetadata annotationMetadata,
 @NonNull
 @NonNull InterceptorKind kind)

Resolve interceptor binding for the given annotation metadata and kind.

Parameters:

annotationMetadata - The annotation metadata

kind - The kind

Returns:

The binding

Since:

3.3.0