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package com.fasterxml.jackson.databind.introspect;
import java.lang.reflect.*;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.util.ClassUtil;
public final class AnnotatedMethod
extends AnnotatedWithParams
implements java.io.Serializable
{
private static final long serialVersionUID = 1L;
final protected transient Method _method;
// // Simple lazy-caching:
protected Class[] _paramClasses;
/**
* Field that is used to make JDK serialization work with this
* object.
*
* @since 2.1
*/
protected Serialization _serialization;
/*
/*****************************************************
/* Life-cycle
/*****************************************************
*/
public AnnotatedMethod(TypeResolutionContext ctxt, Method method,
AnnotationMap classAnn, AnnotationMap[] paramAnnotations)
{
super(ctxt, classAnn, paramAnnotations);
if (method == null) {
throw new IllegalArgumentException("Cannot construct AnnotatedMethod with null Method");
}
_method = method;
}
/**
* Method used for JDK serialization support
* @since 2.1
*/
protected AnnotatedMethod(Serialization ser)
{
super(null, null, null);
_method = null;
_serialization = ser;
}
@Override
public AnnotatedMethod withAnnotations(AnnotationMap ann) {
return new AnnotatedMethod(_typeContext, _method, ann, _paramAnnotations);
}
@Override
public Method getAnnotated() { return _method; }
@Override
public int getModifiers() { return _method.getModifiers(); }
@Override
public String getName() { return _method.getName(); }
/**
* For methods, this returns declared return type, which is only
* useful with getters (setters do not return anything; hence `Void`
* would be returned here)
*/
@Override
public JavaType getType() {
return _typeContext.resolveType(_method.getGenericReturnType());
}
/**
* For methods, this returns declared return type, which is only
* useful with getters (setters do not usually return anything;
* hence "void" type is returned here)
*/
@Override
public Class getRawType() {
return _method.getReturnType();
}
@Deprecated
@Override
public Type getGenericType() {
return _method.getGenericReturnType();
}
/*
/*****************************************************
/* AnnotatedWithParams
/*****************************************************
*/
@Override
public final Object call() throws Exception {
return _method.invoke(null);
}
@Override
public final Object call(Object[] args) throws Exception {
return _method.invoke(null, args);
}
@Override
public final Object call1(Object arg) throws Exception {
return _method.invoke(null, arg);
}
public final Object callOn(Object pojo) throws Exception {
return _method.invoke(pojo, (Object[]) null);
}
public final Object callOnWith(Object pojo, Object... args) throws Exception {
return _method.invoke(pojo, args);
}
/*
/********************************************************
/* AnnotatedMember impl
/********************************************************
*/
@Override
public int getParameterCount() {
return getRawParameterTypes().length;
}
@Override
public Class getRawParameterType(int index)
{
Class[] types = getRawParameterTypes();
return (index >= types.length) ? null : types[index];
}
@Override
public JavaType getParameterType(int index) {
Type[] types = _method.getGenericParameterTypes();
if (index >= types.length) {
return null;
}
return _typeContext.resolveType(types[index]);
}
@Override
@Deprecated // since 2.7
public Type getGenericParameterType(int index) {
Type[] types = getGenericParameterTypes();
if (index >= types.length) {
return null;
}
return types[index];
}
@Override
public Class getDeclaringClass() { return _method.getDeclaringClass(); }
@Override
public Method getMember() { return _method; }
@Override
public void setValue(Object pojo, Object value) throws IllegalArgumentException
{
try {
_method.invoke(pojo, value);
} catch (IllegalAccessException | InvocationTargetException e) {
throw new IllegalArgumentException("Failed to setValue() with method "
+getFullName()+": "+e.getMessage(), e);
}
}
@Override
public Object getValue(Object pojo) throws IllegalArgumentException
{
try {
return _method.invoke(pojo, (Object[]) null);
} catch (IllegalAccessException | InvocationTargetException e) {
throw new IllegalArgumentException("Failed to getValue() with method "
+getFullName()+": "+e.getMessage(), e);
}
}
/*
/*****************************************************
/* Extended API, generic
/*****************************************************
*/
@Override
public String getFullName() {
return String.format("%s(%d params)", super.getFullName(), getParameterCount());
}
public Class[] getRawParameterTypes()
{
if (_paramClasses == null) {
_paramClasses = _method.getParameterTypes();
}
return _paramClasses;
}
@Deprecated // since 2.7
public Type[] getGenericParameterTypes() {
return _method.getGenericParameterTypes();
}
public Class getRawReturnType() {
return _method.getReturnType();
}
/**
* Helper method that can be used to check whether method returns
* a value or not; if return type declared as void, returns
* false, otherwise true
*
* @since 2.4
*/
public boolean hasReturnType() {
Class rt = getRawReturnType();
return (rt != Void.TYPE && rt != Void.class);
}
/*
/********************************************************
/* Other
/********************************************************
*/
@Override
public String toString() {
return "[method "+getFullName()+"]";
}
@Override
public int hashCode() {
return _method.getName().hashCode();
}
@Override
public boolean equals(Object o) {
if (o == this) return true;
return ClassUtil.hasClass(o, getClass())
&& (((AnnotatedMethod) o)._method == _method);
}
/*
/**********************************************************
/* JDK serialization handling
/**********************************************************
*/
Object writeReplace() {
return new AnnotatedMethod(new Serialization(_method));
}
Object readResolve() {
Class clazz = _serialization.clazz;
try {
Method m = clazz.getDeclaredMethod(_serialization.name,
_serialization.args);
// 06-Oct-2012, tatu: Has "lost" its security override, may need to force back
if (!m.isAccessible()) {
ClassUtil.checkAndFixAccess(m, false);
}
return new AnnotatedMethod(null, m, null, null);
} catch (Exception e) {
throw new IllegalArgumentException("Could not find method '"+_serialization.name
+"' from Class '"+clazz.getName());
}
}
/**
* Helper class that is used as the workaround to persist
* Field references. It basically just stores declaring class
* and field name.
*/
private final static class Serialization
implements java.io.Serializable
{
private static final long serialVersionUID = 1L;
protected Class clazz;
protected String name;
protected Class[] args;
public Serialization(Method setter) {
clazz = setter.getDeclaringClass();
name = setter.getName();
args = setter.getParameterTypes();
}
}
}
