jlong GetComReferencePointer(JNIEnv* env, jobject obj, const char* fieldName)
{
jclass cls;
jobject reference;
cls = env->GetObjectClass(obj);
reference = env->GetObjectField(obj, env->GetFieldID(cls, fieldName, "Lbe/derycke/pieter/com/COMReference;"));
return ConvertComReferenceToPointer(env, reference);
}
JNIEXPORT jobject JNICALL Java_jmtp_PortableDevicePropertiesImplWin32_setValues
(JNIEnv* env, jobject obj, jstring jsObjectID, jobject jobjValues)
{
//variabelen
HRESULT hr;
IPortableDeviceProperties* pProperties;
IPortableDeviceValues* pValues;
IPortableDeviceValues* pResults;
LPWSTR wszObjectID;
jclass cls;
jmethodID mid;
jobject jobjReference;
//methode implementatie
if(jsObjectID != NULL && jobjValues != NULL)
{
pProperties = GetPortableDeviceProperties(env, obj);
jobjReference = RetrieveCOMReferenceFromCOMReferenceable(env, jobjValues);
pValues = (IPortableDeviceValues*)ConvertComReferenceToPointer(env, jobjReference);
wszObjectID = (WCHAR*)env->GetStringChars(jsObjectID, NULL);
hr = pProperties->SetValues(wszObjectID, pValues, &pResults);
env->ReleaseStringChars(jsObjectID, (jchar*)wszObjectID);
if(SUCCEEDED(hr))
{
//smart reference object aanmaken
cls = env->FindClass("be/derycke/pieter/com/COMReference");
mid = env->GetMethodID(cls, "<init>", "(J)V");
jobjReference = env->NewObject(cls, mid, pResults);
cls = env->FindClass("jmtp/PortableDeviceValuesImplWin32");
mid = env->GetMethodID(cls, "<init>", "(Lbe/derycke/pieter/com/COMReference;)V");
return env->NewObject(cls, mid, jobjReference);
}
else
{
ThrowCOMException(env, L"Couldn't change the properties of the element", hr);
return NULL;
}
}
else
{
env->ThrowNew(env->FindClass("java/lang/NullPointerException"), "arguments can't be null");
return NULL;
}
}
JNIEXPORT jobject JNICALL Java_jmtp_PortableDevicePropertiesImplWin32_getValues
(JNIEnv* env, jobject obj, jstring jsObjectID, jobject jobjKeyCollection)
{
HRESULT hr;
IPortableDeviceProperties* pProperties;
IPortableDeviceValues* pValues;
IPortableDeviceKeyCollection* pKeyCollection;
LPWSTR wszObjectID;
jclass cls;
jmethodID mid;
jobject jobjKeyCollectionReference;
jobject jobjReference;
pProperties = GetPortableDeviceProperties(env, obj);
mid = env->GetMethodID(env->GetObjectClass(jobjKeyCollection), "getReference",
"()Lbe/derycke/pieter/com/COMReference;");
jobjKeyCollectionReference = env->CallObjectMethod(jobjKeyCollection, mid);
pKeyCollection =
(IPortableDeviceKeyCollection*)ConvertComReferenceToPointer(env, jobjKeyCollectionReference);
wszObjectID = (WCHAR*)env->GetStringChars(jsObjectID, NULL);
hr = pProperties->GetValues(wszObjectID, pKeyCollection, &pValues);
env->ReleaseStringChars(jsObjectID,(jchar*)wszObjectID);
if(FAILED(hr))
{
ThrowCOMException(env, L"Failed to retrieve the properties", hr);
return NULL;
}
//smart reference object aanmaken
cls = env->FindClass("be/derycke/pieter/com/COMReference");
mid = env->GetMethodID(cls, "<init>", "(J)V");
jobjReference = env->NewObject(cls, mid, pValues);
cls = env->FindClass("jmtp/PortableDeviceValuesImplWin32");
mid = env->GetMethodID(cls, "<init>", "(Lbe/derycke/pieter/com/COMReference;)V");
return env->NewObject(cls, mid, jobjReference);
}
jlong GetComReferencePointerFromComReferenceable(JNIEnv* env, jobject jobjCOMReferenceable)
{
jobject jobjReference = RetrieveCOMReferenceFromCOMReferenceable(env, jobjCOMReferenceable);
return ConvertComReferenceToPointer(env, jobjReference);
}
void* RetrievePointerFromCOMReferenceable(JNIEnv* env, jobject jobjCOMReferenceable) {
jobject jobjValuesReference = RetrieveCOMReferenceFromCOMReferenceable(env, jobjCOMReferenceable);
return (void *)ConvertComReferenceToPointer(env, jobjValuesReference);
}
JNIEXPORT jstring JNICALL Java_jmtp_PortableDeviceContentImplWin32_createObjectWithPropertiesAndData
(JNIEnv* env, jobject obj, jobject jobjValues, jobject jobjFile)
{
//variabelen
HRESULT hr;
IPortableDeviceContent* pDeviceContent;
IPortableDeviceValues* pDeviceObjectValues;
jobject jobjValuesReference;
jstring jsFileLocation;
LPWSTR wszFileLocation;
DWORD dwBufferSize;
CComPtr<IStream> pFileStream;
CComPtr<IStream> pDeviceStream;
CComPtr<IPortableDeviceDataStream> pDeviceDataStream;
STATSTG fileStats;
BYTE* pBuffer;
DWORD dwReadFromStream;
LPWSTR wszObjectID;
jstring jsObjectID;
jmethodID mid;
//Methode implementatie
pDeviceContent = GetPortableDeviceContent(env, obj);
jobjValuesReference = RetrieveCOMReferenceFromCOMReferenceable(env, jobjValues);
pDeviceObjectValues = (IPortableDeviceValues*)ConvertComReferenceToPointer(env, jobjValuesReference);
//COM stream object aanmaken
mid = env->GetMethodID(env->FindClass("java/io/File"), "getAbsolutePath", "()Ljava/lang/String;");
jsFileLocation = (jstring)env->CallObjectMethod(jobjFile, mid);
wszFileLocation = (WCHAR*)env->GetStringChars(jsFileLocation, NULL);
hr = SHCreateStreamOnFileW(wszFileLocation, STGM_READ, &pFileStream);
env->ReleaseStringChars(jsFileLocation, (jchar*)wszFileLocation); //string resources terug vrijgeven
if(SUCCEEDED(hr))
{
//groote van het bestand bepalen
//(door een beperking in java op het gebied van unsigned integers, moeten we het wel in c++ doen)
pFileStream->Stat(&fileStats, STATFLAG_NONAME);
pDeviceObjectValues->SetUnsignedLargeIntegerValue(WPD_OBJECT_SIZE, fileStats.cbSize.QuadPart);
hr = pDeviceContent->CreateObjectWithPropertiesAndData(pDeviceObjectValues,
&pDeviceStream, &dwBufferSize, NULL);
if(SUCCEEDED(hr))
{
pDeviceStream->QueryInterface(IID_IPortableDeviceDataStream, (void**)&pDeviceDataStream);
//data kopieren
pBuffer = new BYTE[dwBufferSize];
dwReadFromStream = 0;
do
{
pFileStream->Read(pBuffer, dwBufferSize, &dwReadFromStream);
pDeviceDataStream->Write(pBuffer, dwReadFromStream, NULL);
}
while(dwReadFromStream > 0);
delete[] pBuffer;
hr = pDeviceDataStream->Commit(STGC_DEFAULT);
if(SUCCEEDED(hr))
{
pDeviceDataStream->GetObjectID(&wszObjectID);
jsObjectID = (jstring)env->NewString((jchar*)wszObjectID, wcslen(wszObjectID));
CoTaskMemFree(wszObjectID);
return jsObjectID;
}
else
{
ThrowCOMException(env, L"Couldn't commit the data to the portable device", hr);
}
}
else
{
ThrowCOMException(env, L"Couldn't create a COM stream object to the portable device", hr);
}
}
else
{
ThrowCOMException(env, L"Couldn't create a COM stream object to the file", hr);
}
return NULL;
}
