750 lines
30 KiB
Java
750 lines
30 KiB
Java
/*
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* Copyright (c) 1996, 2006, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.lang.reflect;
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import ikvm.internal.CallerID;
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import sun.reflect.CallerSensitive;
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import sun.reflect.MethodAccessor;
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import sun.reflect.Reflection;
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import sun.reflect.generics.repository.MethodRepository;
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import sun.reflect.generics.factory.CoreReflectionFactory;
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import sun.reflect.generics.factory.GenericsFactory;
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import sun.reflect.generics.scope.MethodScope;
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import sun.reflect.annotation.AnnotationType;
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import sun.reflect.annotation.AnnotationParser;
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import java.lang.annotation.Annotation;
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import java.lang.annotation.AnnotationFormatError;
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import java.nio.ByteBuffer;
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import java.util.Map;
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/**
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* A {@code Method} provides information about, and access to, a single method
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* on a class or interface. The reflected method may be a class method
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* or an instance method (including an abstract method).
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*
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* <p>A {@code Method} permits widening conversions to occur when matching the
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* actual parameters to invoke with the underlying method's formal
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* parameters, but it throws an {@code IllegalArgumentException} if a
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* narrowing conversion would occur.
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*
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* @see Member
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* @see java.lang.Class
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* @see java.lang.Class#getMethods()
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* @see java.lang.Class#getMethod(String, Class[])
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* @see java.lang.Class#getDeclaredMethods()
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* @see java.lang.Class#getDeclaredMethod(String, Class[])
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*
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* @author Kenneth Russell
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* @author Nakul Saraiya
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*/
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public final
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class Method extends AccessibleObject implements GenericDeclaration,
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Member {
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private Class<?> clazz;
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private int slot;
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// This is guaranteed to be interned by the VM in the 1.4
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// reflection implementation
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private String name;
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private Class<?> returnType;
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private Class<?>[] parameterTypes;
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private Class<?>[] exceptionTypes;
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private int modifiers;
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// Generics and annotations support
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private transient String signature;
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// generic info repository; lazily initialized
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private transient MethodRepository genericInfo;
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private volatile MethodAccessor methodAccessor;
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// For sharing of MethodAccessors. This branching structure is
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// currently only two levels deep (i.e., one root Method and
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// potentially many Method objects pointing to it.)
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private Method root;
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// Generics infrastructure
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private String getGenericSignature() {return signature;}
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// Accessor for factory
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private GenericsFactory getFactory() {
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// create scope and factory
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return CoreReflectionFactory.make(this, MethodScope.make(this));
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}
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// Accessor for generic info repository
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private MethodRepository getGenericInfo() {
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// lazily initialize repository if necessary
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if (genericInfo == null) {
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// create and cache generic info repository
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genericInfo = MethodRepository.make(getGenericSignature(),
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getFactory());
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}
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return genericInfo; //return cached repository
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}
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/**
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* Package-private constructor used by ReflectAccess to enable
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* instantiation of these objects in Java code from the java.lang
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* package via sun.reflect.LangReflectAccess.
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*/
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Method(Class<?> declaringClass,
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String name,
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Class<?>[] parameterTypes,
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Class<?> returnType,
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Class<?>[] checkedExceptions,
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int modifiers,
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int slot,
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String signature,
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byte[] unused1,
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byte[] unused2,
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byte[] unused3)
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{
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this.clazz = declaringClass;
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this.name = name;
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this.parameterTypes = parameterTypes;
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this.returnType = returnType;
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this.exceptionTypes = checkedExceptions;
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this.modifiers = modifiers;
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this.slot = slot;
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this.signature = signature;
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}
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/**
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* Package-private routine (exposed to java.lang.Class via
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* ReflectAccess) which returns a copy of this Method. The copy's
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* "root" field points to this Method.
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*/
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Method copy() {
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// This routine enables sharing of MethodAccessor objects
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// among Method objects which refer to the same underlying
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// method in the VM. (All of this contortion is only necessary
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// because of the "accessibility" bit in AccessibleObject,
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// which implicitly requires that new java.lang.reflect
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// objects be fabricated for each reflective call on Class
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// objects.)
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Method res = new Method(clazz, name, parameterTypes, returnType,
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exceptionTypes, modifiers, slot, signature,
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null, null, null);
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res.root = this;
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// Might as well eagerly propagate this if already present
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res.methodAccessor = methodAccessor;
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return res;
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}
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/**
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* Returns the {@code Class} object representing the class or interface
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* that declares the method represented by this {@code Method} object.
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*/
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public Class<?> getDeclaringClass() {
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return clazz;
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}
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/**
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* Returns the name of the method represented by this {@code Method}
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* object, as a {@code String}.
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*/
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public String getName() {
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return name;
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}
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/**
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* Returns the Java language modifiers for the method represented
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* by this {@code Method} object, as an integer. The {@code Modifier} class should
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* be used to decode the modifiers.
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*
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* @see Modifier
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*/
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public int getModifiers() {
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return modifiers;
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}
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/**
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* Returns an array of {@code TypeVariable} objects that represent the
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* type variables declared by the generic declaration represented by this
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* {@code GenericDeclaration} object, in declaration order. Returns an
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* array of length 0 if the underlying generic declaration declares no type
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* variables.
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*
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* @return an array of {@code TypeVariable} objects that represent
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* the type variables declared by this generic declaration
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* @throws GenericSignatureFormatError if the generic
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* signature of this generic declaration does not conform to
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* the format specified in
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* <cite>The Java™ Virtual Machine Specification</cite>
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* @since 1.5
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*/
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public TypeVariable<Method>[] getTypeParameters() {
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if (getGenericSignature() != null)
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return (TypeVariable<Method>[])getGenericInfo().getTypeParameters();
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else
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return (TypeVariable<Method>[])new TypeVariable[0];
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}
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/**
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* Returns a {@code Class} object that represents the formal return type
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* of the method represented by this {@code Method} object.
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*
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* @return the return type for the method this object represents
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*/
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public Class<?> getReturnType() {
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return returnType;
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}
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/**
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* Returns a {@code Type} object that represents the formal return
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* type of the method represented by this {@code Method} object.
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*
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* <p>If the return type is a parameterized type,
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* the {@code Type} object returned must accurately reflect
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* the actual type parameters used in the source code.
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*
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* <p>If the return type is a type variable or a parameterized type, it
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* is created. Otherwise, it is resolved.
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*
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* @return a {@code Type} object that represents the formal return
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* type of the underlying method
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* @throws GenericSignatureFormatError
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* if the generic method signature does not conform to the format
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* specified in
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* <cite>The Java™ Virtual Machine Specification</cite>
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* @throws TypeNotPresentException if the underlying method's
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* return type refers to a non-existent type declaration
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* @throws MalformedParameterizedTypeException if the
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* underlying method's return typed refers to a parameterized
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* type that cannot be instantiated for any reason
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* @since 1.5
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*/
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public Type getGenericReturnType() {
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if (getGenericSignature() != null) {
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return getGenericInfo().getReturnType();
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} else { return getReturnType();}
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}
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/**
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* Returns an array of {@code Class} objects that represent the formal
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* parameter types, in declaration order, of the method
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* represented by this {@code Method} object. Returns an array of length
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* 0 if the underlying method takes no parameters.
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*
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* @return the parameter types for the method this object
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* represents
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*/
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public Class<?>[] getParameterTypes() {
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return (Class<?>[]) parameterTypes.clone();
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}
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/**
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* Returns an array of {@code Type} objects that represent the formal
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* parameter types, in declaration order, of the method represented by
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* this {@code Method} object. Returns an array of length 0 if the
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* underlying method takes no parameters.
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*
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* <p>If a formal parameter type is a parameterized type,
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* the {@code Type} object returned for it must accurately reflect
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* the actual type parameters used in the source code.
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*
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* <p>If a formal parameter type is a type variable or a parameterized
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* type, it is created. Otherwise, it is resolved.
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*
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* @return an array of Types that represent the formal
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* parameter types of the underlying method, in declaration order
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* @throws GenericSignatureFormatError
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* if the generic method signature does not conform to the format
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* specified in
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* <cite>The Java™ Virtual Machine Specification</cite>
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* @throws TypeNotPresentException if any of the parameter
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* types of the underlying method refers to a non-existent type
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* declaration
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* @throws MalformedParameterizedTypeException if any of
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* the underlying method's parameter types refer to a parameterized
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* type that cannot be instantiated for any reason
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* @since 1.5
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*/
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public Type[] getGenericParameterTypes() {
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if (getGenericSignature() != null)
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return getGenericInfo().getParameterTypes();
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else
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return getParameterTypes();
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}
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/**
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* Returns an array of {@code Class} objects that represent
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* the types of the exceptions declared to be thrown
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* by the underlying method
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* represented by this {@code Method} object. Returns an array of length
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* 0 if the method declares no exceptions in its {@code throws} clause.
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*
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* @return the exception types declared as being thrown by the
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* method this object represents
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*/
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public Class<?>[] getExceptionTypes() {
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return (Class<?>[]) exceptionTypes.clone();
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}
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/**
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* Returns an array of {@code Type} objects that represent the
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* exceptions declared to be thrown by this {@code Method} object.
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* Returns an array of length 0 if the underlying method declares
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* no exceptions in its {@code throws} clause.
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*
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* <p>If an exception type is a type variable or a parameterized
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* type, it is created. Otherwise, it is resolved.
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*
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* @return an array of Types that represent the exception types
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* thrown by the underlying method
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* @throws GenericSignatureFormatError
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* if the generic method signature does not conform to the format
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* specified in
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* <cite>The Java™ Virtual Machine Specification</cite>
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* @throws TypeNotPresentException if the underlying method's
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* {@code throws} clause refers to a non-existent type declaration
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* @throws MalformedParameterizedTypeException if
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* the underlying method's {@code throws} clause refers to a
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* parameterized type that cannot be instantiated for any reason
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* @since 1.5
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*/
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public Type[] getGenericExceptionTypes() {
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Type[] result;
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if (getGenericSignature() != null &&
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((result = getGenericInfo().getExceptionTypes()).length > 0))
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return result;
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else
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return getExceptionTypes();
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}
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/**
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* Compares this {@code Method} against the specified object. Returns
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* true if the objects are the same. Two {@code Methods} are the same if
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* they were declared by the same class and have the same name
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* and formal parameter types and return type.
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*/
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public boolean equals(Object obj) {
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if (obj != null && obj instanceof Method) {
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Method other = (Method)obj;
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if ((getDeclaringClass() == other.getDeclaringClass())
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&& (getName() == other.getName())) {
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if (!returnType.equals(other.getReturnType()))
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return false;
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/* Avoid unnecessary cloning */
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Class<?>[] params1 = parameterTypes;
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Class<?>[] params2 = other.parameterTypes;
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if (params1.length == params2.length) {
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for (int i = 0; i < params1.length; i++) {
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if (params1[i] != params2[i])
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return false;
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}
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return true;
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}
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}
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}
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return false;
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}
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/**
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* Returns a hashcode for this {@code Method}. The hashcode is computed
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* as the exclusive-or of the hashcodes for the underlying
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* method's declaring class name and the method's name.
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*/
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public int hashCode() {
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return getDeclaringClass().getName().hashCode() ^ getName().hashCode();
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}
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/**
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* Returns a string describing this {@code Method}. The string is
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* formatted as the method access modifiers, if any, followed by
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* the method return type, followed by a space, followed by the
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* class declaring the method, followed by a period, followed by
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* the method name, followed by a parenthesized, comma-separated
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* list of the method's formal parameter types. If the method
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* throws checked exceptions, the parameter list is followed by a
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* space, followed by the word throws followed by a
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* comma-separated list of the thrown exception types.
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* For example:
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* <pre>
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* public boolean java.lang.Object.equals(java.lang.Object)
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* </pre>
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*
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* <p>The access modifiers are placed in canonical order as
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* specified by "The Java Language Specification". This is
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* {@code public}, {@code protected} or {@code private} first,
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* and then other modifiers in the following order:
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* {@code abstract}, {@code static}, {@code final},
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* {@code synchronized}, {@code native}, {@code strictfp}.
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*/
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public String toString() {
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try {
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StringBuilder sb = new StringBuilder();
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int mod = getModifiers() & Modifier.methodModifiers();
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if (mod != 0) {
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sb.append(Modifier.toString(mod)).append(' ');
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}
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sb.append(Field.getTypeName(getReturnType())).append(' ');
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sb.append(Field.getTypeName(getDeclaringClass())).append('.');
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sb.append(getName()).append('(');
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Class<?>[] params = parameterTypes; // avoid clone
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for (int j = 0; j < params.length; j++) {
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sb.append(Field.getTypeName(params[j]));
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if (j < (params.length - 1))
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sb.append(',');
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}
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sb.append(')');
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Class<?>[] exceptions = exceptionTypes; // avoid clone
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if (exceptions.length > 0) {
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sb.append(" throws ");
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for (int k = 0; k < exceptions.length; k++) {
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sb.append(exceptions[k].getName());
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if (k < (exceptions.length - 1))
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sb.append(',');
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}
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}
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return sb.toString();
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} catch (Exception e) {
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return "<" + e + ">";
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}
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}
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/**
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* Returns a string describing this {@code Method}, including
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* type parameters. The string is formatted as the method access
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* modifiers, if any, followed by an angle-bracketed
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* comma-separated list of the method's type parameters, if any,
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* followed by the method's generic return type, followed by a
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* space, followed by the class declaring the method, followed by
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* a period, followed by the method name, followed by a
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* parenthesized, comma-separated list of the method's generic
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* formal parameter types.
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*
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* If this method was declared to take a variable number of
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* arguments, instead of denoting the last parameter as
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* "<tt><i>Type</i>[]</tt>", it is denoted as
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* "<tt><i>Type</i>...</tt>".
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*
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* A space is used to separate access modifiers from one another
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* and from the type parameters or return type. If there are no
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* type parameters, the type parameter list is elided; if the type
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* parameter list is present, a space separates the list from the
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* class name. If the method is declared to throw exceptions, the
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* parameter list is followed by a space, followed by the word
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* throws followed by a comma-separated list of the generic thrown
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* exception types. If there are no type parameters, the type
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* parameter list is elided.
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*
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* <p>The access modifiers are placed in canonical order as
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* specified by "The Java Language Specification". This is
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* {@code public}, {@code protected} or {@code private} first,
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* and then other modifiers in the following order:
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* {@code abstract}, {@code static}, {@code final},
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* {@code synchronized}, {@code native}, {@code strictfp}.
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*
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* @return a string describing this {@code Method},
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* include type parameters
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*
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* @since 1.5
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*/
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public String toGenericString() {
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try {
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StringBuilder sb = new StringBuilder();
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int mod = getModifiers() & Modifier.methodModifiers();
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if (mod != 0) {
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sb.append(Modifier.toString(mod)).append(' ');
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}
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TypeVariable<?>[] typeparms = getTypeParameters();
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if (typeparms.length > 0) {
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boolean first = true;
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sb.append('<');
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for(TypeVariable<?> typeparm: typeparms) {
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if (!first)
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sb.append(',');
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// Class objects can't occur here; no need to test
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// and call Class.getName().
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sb.append(typeparm.toString());
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first = false;
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}
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sb.append("> ");
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}
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Type genRetType = getGenericReturnType();
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sb.append( ((genRetType instanceof Class<?>)?
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Field.getTypeName((Class<?>)genRetType):genRetType.toString()))
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.append(' ');
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sb.append(Field.getTypeName(getDeclaringClass())).append('.');
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sb.append(getName()).append('(');
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Type[] params = getGenericParameterTypes();
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for (int j = 0; j < params.length; j++) {
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String param = (params[j] instanceof Class)?
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Field.getTypeName((Class)params[j]):
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(params[j].toString());
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if (isVarArgs() && (j == params.length - 1)) // replace T[] with T...
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param = param.replaceFirst("\\[\\]$", "...");
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sb.append(param);
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if (j < (params.length - 1))
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sb.append(',');
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}
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sb.append(')');
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Type[] exceptions = getGenericExceptionTypes();
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if (exceptions.length > 0) {
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sb.append(" throws ");
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for (int k = 0; k < exceptions.length; k++) {
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sb.append((exceptions[k] instanceof Class)?
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((Class)exceptions[k]).getName():
|
|
exceptions[k].toString());
|
|
if (k < (exceptions.length - 1))
|
|
sb.append(',');
|
|
}
|
|
}
|
|
return sb.toString();
|
|
} catch (Exception e) {
|
|
return "<" + e + ">";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Invokes the underlying method represented by this {@code Method}
|
|
* object, on the specified object with the specified parameters.
|
|
* Individual parameters are automatically unwrapped to match
|
|
* primitive formal parameters, and both primitive and reference
|
|
* parameters are subject to method invocation conversions as
|
|
* necessary.
|
|
*
|
|
* <p>If the underlying method is static, then the specified {@code obj}
|
|
* argument is ignored. It may be null.
|
|
*
|
|
* <p>If the number of formal parameters required by the underlying method is
|
|
* 0, the supplied {@code args} array may be of length 0 or null.
|
|
*
|
|
* <p>If the underlying method is an instance method, it is invoked
|
|
* using dynamic method lookup as documented in The Java Language
|
|
* Specification, Second Edition, section 15.12.4.4; in particular,
|
|
* overriding based on the runtime type of the target object will occur.
|
|
*
|
|
* <p>If the underlying method is static, the class that declared
|
|
* the method is initialized if it has not already been initialized.
|
|
*
|
|
* <p>If the method completes normally, the value it returns is
|
|
* returned to the caller of invoke; if the value has a primitive
|
|
* type, it is first appropriately wrapped in an object. However,
|
|
* if the value has the type of an array of a primitive type, the
|
|
* elements of the array are <i>not</i> wrapped in objects; in
|
|
* other words, an array of primitive type is returned. If the
|
|
* underlying method return type is void, the invocation returns
|
|
* null.
|
|
*
|
|
* @param obj the object the underlying method is invoked from
|
|
* @param args the arguments used for the method call
|
|
* @return the result of dispatching the method represented by
|
|
* this object on {@code obj} with parameters
|
|
* {@code args}
|
|
*
|
|
* @exception IllegalAccessException if this {@code Method} object
|
|
* is enforcing Java language access control and the underlying
|
|
* method is inaccessible.
|
|
* @exception IllegalArgumentException if the method is an
|
|
* instance method and the specified object argument
|
|
* is not an instance of the class or interface
|
|
* declaring the underlying method (or of a subclass
|
|
* or implementor thereof); if the number of actual
|
|
* and formal parameters differ; if an unwrapping
|
|
* conversion for primitive arguments fails; or if,
|
|
* after possible unwrapping, a parameter value
|
|
* cannot be converted to the corresponding formal
|
|
* parameter type by a method invocation conversion.
|
|
* @exception InvocationTargetException if the underlying method
|
|
* throws an exception.
|
|
* @exception NullPointerException if the specified object is null
|
|
* and the method is an instance method.
|
|
* @exception ExceptionInInitializerError if the initialization
|
|
* provoked by this method fails.
|
|
*/
|
|
@CallerSensitive
|
|
public Object invoke(Object obj, Object... args)
|
|
throws IllegalAccessException, IllegalArgumentException,
|
|
InvocationTargetException
|
|
{
|
|
if (!override) {
|
|
if (!Reflection.quickCheckMemberAccess(clazz, modifiers)) {
|
|
Class<?> caller = Reflection.getCallerClass();
|
|
checkAccess(caller, clazz, obj, modifiers);
|
|
}
|
|
}
|
|
MethodAccessor ma = methodAccessor; // read volatile
|
|
if (ma == null) {
|
|
ma = acquireMethodAccessor();
|
|
}
|
|
return ma.invoke(obj, args, CallerID.getCallerID());
|
|
}
|
|
|
|
/**
|
|
* Returns {@code true} if this method is a bridge
|
|
* method; returns {@code false} otherwise.
|
|
*
|
|
* @return true if and only if this method is a bridge
|
|
* method as defined by the Java Language Specification.
|
|
* @since 1.5
|
|
*/
|
|
public boolean isBridge() {
|
|
return (getModifiers() & Modifier.BRIDGE) != 0;
|
|
}
|
|
|
|
/**
|
|
* Returns {@code true} if this method was declared to take
|
|
* a variable number of arguments; returns {@code false}
|
|
* otherwise.
|
|
*
|
|
* @return {@code true} if an only if this method was declared to
|
|
* take a variable number of arguments.
|
|
* @since 1.5
|
|
*/
|
|
public boolean isVarArgs() {
|
|
return (getModifiers() & Modifier.VARARGS) != 0;
|
|
}
|
|
|
|
/**
|
|
* Returns {@code true} if this method is a synthetic
|
|
* method; returns {@code false} otherwise.
|
|
*
|
|
* @return true if and only if this method is a synthetic
|
|
* method as defined by the Java Language Specification.
|
|
* @since 1.5
|
|
*/
|
|
public boolean isSynthetic() {
|
|
return Modifier.isSynthetic(getModifiers());
|
|
}
|
|
|
|
// NOTE that there is no synchronization used here. It is correct
|
|
// (though not efficient) to generate more than one MethodAccessor
|
|
// for a given Method. However, avoiding synchronization will
|
|
// probably make the implementation more scalable.
|
|
private MethodAccessor acquireMethodAccessor() {
|
|
// First check to see if one has been created yet, and take it
|
|
// if so
|
|
MethodAccessor tmp = null;
|
|
if (root != null) tmp = root.getMethodAccessor();
|
|
if (tmp != null) {
|
|
methodAccessor = tmp;
|
|
} else {
|
|
// Otherwise fabricate one and propagate it up to the root
|
|
tmp = reflectionFactory.newMethodAccessor(this);
|
|
setMethodAccessor(tmp);
|
|
}
|
|
|
|
return tmp;
|
|
}
|
|
|
|
// Returns MethodAccessor for this Method object, not looking up
|
|
// the chain to the root
|
|
MethodAccessor getMethodAccessor() {
|
|
return methodAccessor;
|
|
}
|
|
|
|
// Sets the MethodAccessor for this Method object and
|
|
// (recursively) its root
|
|
void setMethodAccessor(MethodAccessor accessor) {
|
|
methodAccessor = accessor;
|
|
// Propagate up
|
|
if (root != null) {
|
|
root.setMethodAccessor(accessor);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @throws NullPointerException {@inheritDoc}
|
|
* @since 1.5
|
|
*/
|
|
public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
|
|
if (annotationClass == null)
|
|
throw new NullPointerException();
|
|
|
|
return (T) declaredAnnotations().get(annotationClass);
|
|
}
|
|
|
|
private static final Annotation[] EMPTY_ANNOTATION_ARRAY=new Annotation[0];
|
|
|
|
/**
|
|
* @since 1.5
|
|
*/
|
|
public Annotation[] getDeclaredAnnotations() {
|
|
return declaredAnnotations().values().toArray(EMPTY_ANNOTATION_ARRAY);
|
|
}
|
|
|
|
private transient Map<Class<? extends Annotation>, Annotation> declaredAnnotations;
|
|
|
|
private synchronized Map<Class<? extends Annotation>, Annotation> declaredAnnotations() {
|
|
if (declaredAnnotations == null) {
|
|
declaredAnnotations = getDeclaredAnnotationsImpl(this);
|
|
}
|
|
return declaredAnnotations;
|
|
}
|
|
|
|
static native Map<Class<? extends Annotation>, Annotation> getDeclaredAnnotationsImpl(Object methodOrConstructor);
|
|
|
|
/**
|
|
* Returns the default value for the annotation member represented by
|
|
* this {@code Method} instance. If the member is of a primitive type,
|
|
* an instance of the corresponding wrapper type is returned. Returns
|
|
* null if no default is associated with the member, or if the method
|
|
* instance does not represent a declared member of an annotation type.
|
|
*
|
|
* @return the default value for the annotation member represented
|
|
* by this {@code Method} instance.
|
|
* @throws TypeNotPresentException if the annotation is of type
|
|
* {@link Class} and no definition can be found for the
|
|
* default class value.
|
|
* @since 1.5
|
|
*/
|
|
public native Object getDefaultValue();
|
|
|
|
/**
|
|
* Returns an array of arrays that represent the annotations on the formal
|
|
* parameters, in declaration order, of the method represented by
|
|
* this {@code Method} object. (Returns an array of length zero if the
|
|
* underlying method is parameterless. If the method has one or more
|
|
* parameters, a nested array of length zero is returned for each parameter
|
|
* with no annotations.) The annotation objects contained in the returned
|
|
* arrays are serializable. The caller of this method is free to modify
|
|
* the returned arrays; it will have no effect on the arrays returned to
|
|
* other callers.
|
|
*
|
|
* @return an array of arrays that represent the annotations on the formal
|
|
* parameters, in declaration order, of the method represented by this
|
|
* Method object
|
|
* @since 1.5
|
|
*/
|
|
public Annotation[][] getParameterAnnotations() {
|
|
Annotation[][] result = getParameterAnnotationsImpl(this);
|
|
int numParameters = parameterTypes.length;
|
|
if (result == null)
|
|
return new Annotation[numParameters][0];
|
|
|
|
if (result.length != numParameters)
|
|
throw new java.lang.annotation.AnnotationFormatError(
|
|
"Parameter annotations don't match number of parameters");
|
|
return result;
|
|
}
|
|
|
|
static native Annotation[][] getParameterAnnotationsImpl(Object methodOrConstructor);
|
|
}
|