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node-java/src/javaObject.cpp at master · bbm1hao/node-java · GitHub
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#
include
"
javaObject.h
"
#
include
"
java.h
"
#
include
"
javaScope.h
"
#
include
"
utils.h
"
#
include
<
sstream
>
#
include
<
algorithm
>
/*
static
*/
std::map<std::string, v8::Persistent<v8::FunctionTemplate> > JavaObject::
sFunctionTemplates
;
/*
static
*/
void
JavaObject::Init
(v8::Handle<v8::Object> target) {
}
/*
static
*/
v8::Local<v8::Object>
JavaObject::New
(Java *java, jobject obj) {
v8::HandleScope scope;
JNIEnv *env = java->
getJavaEnv
();
JavaScope
javaScope
(env);
jclass objClazz = env->
GetObjectClass
(obj);
jclass classClazz = env->
FindClass
(
"
java/lang/Class
"
);
jmethodID class_getName = env->
GetMethodID
(classClazz,
"
getName
"
,
"
()Ljava/lang/String;
"
);
jobject classNameJava = env->
CallObjectMethod
(objClazz, class_getName);
assert
(!env->
ExceptionCheck
());
std::string className =
javaObjectToString
(env, classNameJava);
std::replace
(className.
begin
(), className.
end
(),
'
.
'
,
'
_
'
);
std::replace
(className.
begin
(), className.
end
(),
'
$
'
,
'
_
'
);
std::replace
(className.
begin
(), className.
end
(),
'
[
'
,
'
a
'
);
className =
"
nodeJava_
"
+ className;
v8::Persistent<v8::FunctionTemplate> persistentFuncTemplate;
if
(
sFunctionTemplates
.
find
(className) !=
sFunctionTemplates
.
end
()) {
//
printf("existing className: %s\n", className.c_str());
persistentFuncTemplate =
sFunctionTemplates
[className];
}
else
{
//
printf("create className: %s\n", className.c_str());
v8::Local<v8::FunctionTemplate> funcTemplate =
v8::FunctionTemplate::New
();
funcTemplate->
InstanceTemplate
()->
SetInternalFieldCount
(
1
);
funcTemplate->
SetClassName
(
v8::String::NewSymbol
(className.
c_str
()));
std::list<jobject> methods;
javaReflectionGetMethods
(env, objClazz, &methods,
false
);
jclass methodClazz = env->
FindClass
(
"
java/lang/reflect/Method
"
);
jmethodID method_getName = env->
GetMethodID
(methodClazz,
"
getName
"
,
"
()Ljava/lang/String;
"
);
for
(std::list<jobject>::iterator it = methods.
begin
(); it != methods.
end
(); ++it) {
jstring methodNameJava = (jstring)env->
CallObjectMethod
(*it, method_getName);
assert
(!env->
ExceptionCheck
());
std::string methodNameStr =
javaToString
(env, methodNameJava);
v8::Handle<v8::String> methodName =
v8::String::New
(methodNameStr.
c_str
());
v8::Local<v8::FunctionTemplate> methodCallTemplate =
v8::FunctionTemplate::New
(methodCall, methodName);
funcTemplate->
PrototypeTemplate
()->
Set
(methodName, methodCallTemplate->
GetFunction
());
v8::Handle<v8::String> methodNameSync =
v8::String::New
((methodNameStr +
"
Sync
"
).
c_str
());
v8::Local<v8::FunctionTemplate> methodCallSyncTemplate =
v8::FunctionTemplate::New
(methodCallSync, methodName);
funcTemplate->
PrototypeTemplate
()->
Set
(methodNameSync, methodCallSyncTemplate->
GetFunction
());
}
std::list<jobject> fields;
javaReflectionGetFields
(env, objClazz, &fields);
jclass fieldClazz = env->
FindClass
(
"
java/lang/reflect/Field
"
);
jmethodID field_getName = env->
GetMethodID
(fieldClazz,
"
getName
"
,
"
()Ljava/lang/String;
"
);
for
(std::list<jobject>::iterator it = fields.
begin
(); it != fields.
end
(); ++it) {
jstring fieldNameJava = (jstring)env->
CallObjectMethod
(*it, field_getName);
assert
(!env->
ExceptionCheck
());
std::string fieldNameStr =
javaToString
(env, fieldNameJava);
v8::Handle<v8::String> fieldName =
v8::String::New
(fieldNameStr.
c_str
());
funcTemplate->
InstanceTemplate
()->
SetAccessor
(fieldName, fieldGetter, fieldSetter);
}
sFunctionTemplates
[className] = persistentFuncTemplate = v8::Persistent<v8::FunctionTemplate>::
New
(funcTemplate);
}
v8::Local<v8::Function> ctor = persistentFuncTemplate->
GetFunction
();
v8::Local<v8::Object> javaObjectObj = ctor->
NewInstance
();
javaObjectObj->
SetHiddenValue
(
v8::String::New
(
V8_HIDDEN_MARKER_JAVA_OBJECT
),
v8::Boolean::New
(
true
));
JavaObject *self =
new
JavaObject
(java, obj);
self->
Wrap
(javaObjectObj);
return
scope.
Close
(javaObjectObj);
}
JavaObject::JavaObject
(Java *java, jobject obj) {
m_java = java;
JNIEnv *env = m_java->
getJavaEnv
();
m_obj = env->
NewGlobalRef
(obj);
m_class = (jclass)env->
NewGlobalRef
(env->
GetObjectClass
(obj));
}
JavaObject::~JavaObject
() {
JNIEnv *env = m_java->
getJavaEnv
();
jclass nodeDynamicProxyClass = env->
FindClass
(
"
node/NodeDynamicProxyClass
"
);
if
(env->
IsInstanceOf
(m_obj, nodeDynamicProxyClass)) {
jfieldID ptrField = env->
GetFieldID
(nodeDynamicProxyClass,
"
ptr
"
,
"
J
"
);
DynamicProxyData* proxyData = (DynamicProxyData*)(
long
)env->
GetLongField
(m_obj, ptrField);
if
(
dynamicProxyDataVerify
(proxyData)) {
delete
proxyData;
}
}
env->
DeleteGlobalRef
(m_obj);
env->
DeleteGlobalRef
(m_class);
}
/*
static
*/
v8::Handle<v8::Value>
JavaObject::methodCall
(
const
v8::Arguments& args) {
v8::HandleScope scope;
JavaObject* self = node::ObjectWrap::Unwrap<JavaObject>(args.
This
());
JNIEnv *env = self->
m_java
->
getJavaEnv
();
JavaScope
javaScope
(env);
v8::String::AsciiValue
methodName
(args.
Data
());
std::string methodNameStr = *methodName;
int
argsStart =
0
;
int
argsEnd = args.
Length
();
//
arguments
ARGS_BACK_CALLBACK
();
if
(!callbackProvided && methodNameStr ==
"
toString
"
) {
return
methodCallSync
(args);
}
jobjectArray methodArgs =
v8ToJava
(env, args, argsStart, argsEnd);
jobject method =
javaFindMethod
(env, self->
m_class
, methodNameStr, methodArgs);
if
(method ==
NULL
) {
std::string msg =
methodNotFoundToString
(env, self->
m_class
, methodNameStr,
false
, args, argsStart, argsEnd);
EXCEPTION_CALL_CALLBACK
(self->
m_java
, msg);
return
v8::Undefined
();
}
//
run
InstanceMethodCallBaton* baton =
new
InstanceMethodCallBaton
(self->
m_java
, self, method, methodArgs, callback);
baton->
run
();
END_CALLBACK_FUNCTION
(
"
\"
Method '
"
<< methodNameStr <<
"
' called without a callback did you mean to use the Sync version?
\"
"
);
}
/*
static
*/
v8::Handle<v8::Value>
JavaObject::methodCallSync
(
const
v8::Arguments& args) {
v8::HandleScope scope;
JavaObject* self = node::ObjectWrap::Unwrap<JavaObject>(args.
This
());
JNIEnv *env = self->
m_java
->
getJavaEnv
();
JavaScope
javaScope
(env);
v8::String::AsciiValue
methodName
(args.
Data
());
std::string methodNameStr = *methodName;
int
argsStart =
0
;
int
argsEnd = args.
Length
();
jobjectArray methodArgs =
v8ToJava
(env, args, argsStart, argsEnd);
jobject method =
javaFindMethod
(env, self->
m_class
, methodNameStr, methodArgs);
if
(method ==
NULL
) {
std::string msg =
methodNotFoundToString
(env, self->
m_class
, methodNameStr,
false
, args, argsStart, argsEnd);
v8::Handle<v8::Value> ex =
javaExceptionToV8
(self->
m_java
, env, msg);
return
ThrowException
(ex);
}
//
run
v8::Handle<v8::Value> callback =
v8::Undefined
();
InstanceMethodCallBaton* baton =
new
InstanceMethodCallBaton
(self->
m_java
, self, method, methodArgs, callback);
v8::Handle<v8::Value> result = baton->
runSync
();
delete
baton;
if
(result->
IsNativeError
()) {
return
ThrowException
(result);
}
return
scope.
Close
(result);
}
/*
static
*/
v8::Handle<v8::Value>
JavaObject::fieldGetter
(v8::Local<v8::String> property,
const
v8::AccessorInfo& info) {
v8::HandleScope scope;
JavaObject* self = node::ObjectWrap::Unwrap<JavaObject>(info.
This
());
JNIEnv *env = self->
m_java
->
getJavaEnv
();
JavaScope
javaScope
(env);
v8::String::AsciiValue
propertyCStr
(property);
std::string propertyStr = *propertyCStr;
jobject field =
javaFindField
(env, self->
m_class
, propertyStr);
if
(field ==
NULL
) {
std::ostringstream errStr;
errStr <<
"
Could not find field
"
<< propertyStr;
v8::Handle<v8::Value> ex =
javaExceptionToV8
(self->
m_java
, env, errStr.
str
());
return
ThrowException
(ex);
}
jclass fieldClazz = env->
FindClass
(
"
java/lang/reflect/Field
"
);
jmethodID field_get = env->
GetMethodID
(fieldClazz,
"
get
"
,
"
(Ljava/lang/Object;)Ljava/lang/Object;
"
);
//
get field value
jobject val = env->
CallObjectMethod
(field, field_get, self->
m_obj
);
if
(env->
ExceptionOccurred
()) {
std::ostringstream errStr;
errStr <<
"
Could not get field
"
<< propertyStr;
v8::Handle<v8::Value> ex =
javaExceptionToV8
(self->
m_java
, env, errStr.
str
());
return
ThrowException
(ex);
}
v8::Handle<v8::Value> result =
javaToV8
(self->
m_java
, env, val);
return
scope.
Close
(result);
}
/*
static
*/
void
JavaObject::fieldSetter
(v8::Local<v8::String> property, v8::Local<v8::Value> value,
const
v8::AccessorInfo& info) {
v8::HandleScope scope;
JavaObject* self = node::ObjectWrap::Unwrap<JavaObject>(info.
This
());
JNIEnv *env = self->
m_java
->
getJavaEnv
();
JavaScope
javaScope
(env);
jobject newValue =
v8ToJava
(env, value);
v8::String::AsciiValue
propertyCStr
(property);
std::string propertyStr = *propertyCStr;
jobject field =
javaFindField
(env, self->
m_class
, propertyStr);
if
(field ==
NULL
) {
std::ostringstream errStr;
errStr <<
"
Could not find field
"
<< propertyStr;
v8::Handle<v8::Value> ex =
javaExceptionToV8
(self->
m_java
, env, errStr.
str
());
ThrowException
(ex);
return
;
}
jclass fieldClazz = env->
FindClass
(
"
java/lang/reflect/Field
"
);
jmethodID field_set = env->
GetMethodID
(fieldClazz,
"
set
"
,
"
(Ljava/lang/Object;Ljava/lang/Object;)V
"
);
//
printf("newValue: %s\n", javaObjectToString(env, newValue).c_str());
//
set field value
env->
CallObjectMethod
(field, field_set, self->
m_obj
, newValue);
if
(env->
ExceptionOccurred
()) {
std::ostringstream errStr;
errStr <<
"
Could not set field
"
<< propertyStr;
v8::Handle<v8::Value> ex =
javaExceptionToV8
(self->
m_java
, env, errStr.
str
());
ThrowException
(ex);
return
;
}
}
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