JNICCCFactory.cpp

#include "JNICCCFactory.h"
#include "JNICCC.h"
#include "JNIHelpers.h"

jmethodID       JNICCCFactory::_udt_clsFactoryInterfaceUDT_create = NULL;
jmethodID       JNICCCFactory::_udt_clsFactoryInterfaceUDT_cloneFactory = NULL;

bool JNICCCFactory::initJNITypes(JNIEnv* env){

        if(_udt_clsFactoryInterfaceUDT_create != NULL)
                return true;

        if(udt_clsFactoryInterfaceUDT==NULL)
                return false;

        _udt_clsFactoryInterfaceUDT_cloneFactory = env->GetMethodID(udt_clsFactoryInterfaceUDT, "cloneFactory", "()Lcom/barchart/udt/FactoryInterfaceUDT;");
        _udt_clsFactoryInterfaceUDT_create = env->GetMethodID(udt_clsFactoryInterfaceUDT, "create", "()Lcom/barchart/udt/CCC;");

        return true;
}

JNIEnv* JNICCCFactory::AttachToJVM()
{
        JNIEnv* env = NULL;

        jint result = _javaVM->GetEnv(reinterpret_cast<void**>(&env),JNI_VERSION_1_4);

        if(result == JNI_EDETACHED)
                _javaVM->AttachCurrentThread(reinterpret_cast<void**>(&env),NULL);

        return env;
}


JNICCCFactory::JNICCCFactory(JNIEnv* env, jobject factoryUDT) {

        initJNITypes(env);

        if(factoryUDT==NULL){
                ;//TODO create new exception
        }

        env->GetJavaVM(&_javaVM);

        //We need to create a global JNI ref since
        //we are storing the jobject as a member variable
        //for use later on
        _factoryUDT = env->NewGlobalRef(factoryUDT);

}

JNICCCFactory::~JNICCCFactory(){

        JNIEnv* env = AttachToJVM();

        if(_factoryUDT != NULL){
                env->DeleteLocalRef(_factoryUDT);
        }

}

CCC* JNICCCFactory::create(){

        JNIEnv* env = AttachToJVM();

        jobject objCCC = env->CallObjectMethod(_factoryUDT,_udt_clsFactoryInterfaceUDT_create);

        if(objCCC==NULL && !env->ExceptionCheck() ){
                UDT_ThrowExceptionUDT_Message(env, 0, "failed to allocate CCC class via com.barchart.udt.FactoryInterfaceUDT");
        }

        return reinterpret_cast<CCC*> ((intptr_t) env->GetLongField(objCCC,udt_clsCCC_fld_nativeHandleID));
}

CCCVirtualFactory* JNICCCFactory::clone(){

        JNIEnv* env = AttachToJVM();

        jobject objFactoryUDT = env->CallObjectMethod(_factoryUDT,_udt_clsFactoryInterfaceUDT_cloneFactory);

        return new JNICCCFactory(env,objFactoryUDT);

}