static jstring getString_native(JNIEnv* env, jobject object, jint row, jint column)
{
int32_t err;
CursorWindow * window = GET_WINDOW(env, object);
LOG_WINDOW("Getting string for %d,%d from %p", row, column, window);
field_slot_t field;
err = window->read_field_slot(row, column, &field);
if (err != 0) {
throwExceptionWithRowCol(env, row, column);
return NULL;
}
uint8_t type = field.type;
if (type == FIELD_TYPE_STRING) {
uint32_t size = field.data.buffer.size;
if (size > 0) {
#if WINDOW_STORAGE_UTF8
// Pass size - 1 since the UTF8 is null terminated and we don't want a null terminator on the UTF16 string
String16 utf16((char const *)window->offsetToPtr(field.data.buffer.offset), size - 1);
return env->NewString((jchar const *)utf16.string(), utf16.size());
#else
return env->NewString((jchar const *)window->offsetToPtr(field.data.buffer.offset), size / 2);
#endif
} else {
return env->NewStringUTF("");
}
} else if (type == FIELD_TYPE_INTEGER) {
int64_t value;
if (window->getLong(row, column, &value)) {
char buf[32];
snprintf(buf, sizeof(buf), "%lld", value);
return env->NewStringUTF(buf);
}
return NULL;
} else if (type == FIELD_TYPE_FLOAT) {
double value;
if (window->getDouble(row, column, &value)) {
char buf[32];
//selete the print way by code to impove the precision
if (((value > 0.0001) && (value < 1000000)) || ((value < -0.0001) && (value > -1000000)))
snprintf(buf, sizeof(buf), "%lf", value);
else
snprintf(buf, sizeof(buf), "%e", value);
return env->NewStringUTF(buf);
}
return NULL;
} else if (type == FIELD_TYPE_NULL) {
return NULL;
} else if (type == FIELD_TYPE_BLOB) {
throw_sqlite3_exception(env, "Unable to convert BLOB to string");
return NULL;
} else {
throwUnknowTypeException(env, type);
return NULL;
}
}
static jdouble getDouble_native(JNIEnv* env, jobject object, jint row, jint column)
{
int32_t err;
CursorWindow * window = GET_WINDOW(env, object);
LOG_WINDOW("Getting double for %d,%d from %p", row, column, window);
field_slot_t field;
err = window->read_field_slot(row, column, &field);
if (err != 0) {
throwExceptionWithRowCol(env, row, column);
return 0.0;
}
uint8_t type = field.type;
if (type == FIELD_TYPE_FLOAT) {
double value;
if (window->getDouble(row, column, &value)) {
return value;
}
return 0.0;
} else if (type == FIELD_TYPE_STRING) {
uint32_t size = field.data.buffer.size;
if (size > 0) {
#if WINDOW_STORAGE_UTF8
return strtod((char const *)window->offsetToPtr(field.data.buffer.offset), NULL);
#else
String8 ascii((char16_t *) window->offsetToPtr(field.data.buffer.offset), size / 2);
char const * str = ascii.string();
return strtod(str, NULL);
#endif
} else {
return 0.0;
}
} else if (type == FIELD_TYPE_INTEGER) {
int64_t value;
if (window->getLong(row, column, &value)) {
return (double) value;
}
return 0.0;
} else if (type == FIELD_TYPE_NULL) {
return 0.0;
} else if (type == FIELD_TYPE_BLOB) {
throw_sqlite3_exception(env, "Unable to convert BLOB to double");
return 0.0;
} else {
throwUnknowTypeException(env, type);
return 0.0;
}
}
static jdouble getDouble_native(JNIEnv* env, jobject object, jint row, jint column)
{
int32_t err;
CursorWindow * window = GET_WINDOW(env, object);
LOG_WINDOW("Getting double for %d,%d from %p", row, column, window);
field_slot_t field;
err = window->read_field_slot(row, column, &field);
if (err != 0) {
throwExceptionWithRowCol(env, row, column);
return 0.0;
}
uint8_t type = field.type;
if (type == FIELD_TYPE_FLOAT) {
double value;
if (window->getDouble(row, column, &value)) {
return value;
}
return 0.0;
} else if (type == FIELD_TYPE_STRING) {
uint32_t size = field.data.buffer.size;
if (size > 0) {
double result;
jstring data = env->NewString((const jchar*)window->offsetToPtr(field.data.buffer.offset), (jsize)size);
const char* utf8data = env->GetStringUTFChars(data, NULL);
result = strtod(utf8data, NULL);
if(utf8data) env->ReleaseStringUTFChars(data, utf8data);
if(data) env->DeleteLocalRef(data);
return result;
} else {
return 0.0;
}
} else if (type == FIELD_TYPE_INTEGER) {
int64_t value;
if (window->getLong(row, column, &value)) {
return (double) value;
}
return 0.0;
} else if (type == FIELD_TYPE_NULL) {
return 0.0;
} else if (type == FIELD_TYPE_BLOB) {
throw_sqlite3_exception(env, "Unable to convert BLOB to double");
return 0.0;
} else {
throwUnknowTypeException(env, type);
return 0.0;
}
}
static jstring getString_native(JNIEnv* env, jobject object, jint row, jint column)
{
int i;
int32_t err;
CursorWindow * window = GET_WINDOW(env, object);
LOG_WINDOW("Getting string for %d,%d from %p", row, column, window);
field_slot_t field;
err = window->read_field_slot(row, column, &field);
if (err != 0) {
throwExceptionWithRowCol(env, row, column);
return NULL;
}
uint8_t type = field.type;
jint size = (jint)field.data.buffer.size;
if (type == FIELD_TYPE_NULL) {
return NULL;
} else if (type == FIELD_TYPE_BLOB) {
throw_sqlite3_exception(env, "Unable to convert BLOB to string");
return NULL;
} else if (type == FIELD_TYPE_STRING) {
jchar * buf = (jchar *)window->offsetToPtr(field.data.buffer.offset);
jclass strClass = env->FindClass("java/lang/String");
jmethodID ctorID = env->GetMethodID(strClass, "<init>", "([BLjava/lang/String;)V");
jstring encoding = env->NewStringUTF("UTF-16LE");
jbyteArray bytes = env->NewByteArray(size);
env->SetByteArrayRegion(bytes, 0, size, (jbyte*)buf);
return (jstring)env->NewObject(strClass, ctorID, bytes, encoding);
} else if (type == FIELD_TYPE_INTEGER) {
int64_t value;
if (window->getLong(row, column, &value)) {
char buf[32];
snprintf(buf, sizeof(buf), "%lld", value);
return env->NewStringUTF((const char*)buf);
}
return NULL;
} else if (type == FIELD_TYPE_FLOAT) {
double value;
if (window->getDouble(row, column, &value)) {
char buf[32];
snprintf(buf, sizeof(buf), "%g", value);
return env->NewStringUTF(buf);
}
return NULL;
}
}
static jcharArray copyStringToBuffer_native(JNIEnv* env, jobject object, jint row,
jint column, jint bufferSize, jobject buf)
{
int32_t err;
CursorWindow * window = GET_WINDOW(env, object);
LOG_WINDOW("Copying string for %d,%d from %p", row, column, window);
field_slot_t field;
err = window->read_field_slot(row, column, &field);
if (err != 0) {
jniThrowException(env, "java/lang/IllegalStateException", "Unable to get field slot");
return NULL;
}
jcharArray buffer = (jcharArray)env->GetObjectField(buf, gBufferField);
if (buffer == NULL) {
jniThrowException(env, "java/lang/IllegalStateException", "buf should not be null");
return NULL;
}
jchar* dst = env->GetCharArrayElements(buffer, NULL);
uint8_t type = field.type;
uint32_t sizeCopied = 0;
jcharArray newArray = NULL;
if (type == FIELD_TYPE_STRING) {
uint32_t size = field.data.buffer.size;
if (size > 0) {
#if WINDOW_STORAGE_UTF8
// Pass size - 1 since the UTF8 is null terminated and we don't want a null terminator on the UTF16 string
String16 utf16((char const *)window->offsetToPtr(field.data.buffer.offset), size - 1);
int32_t strSize = utf16.size();
if (strSize > bufferSize || dst == NULL) {
newArray = env->NewCharArray(strSize);
env->SetCharArrayRegion(newArray, 0, strSize, (jchar const *)utf16.string());
} else {
memcpy(dst, (jchar const *)utf16.string(), strSize * 2);
}
sizeCopied = strSize;
#else
sizeCopied = size/2 + size % 2;
if (size > bufferSize * 2 || dst == NULL) {
newArray = env->NewCharArray(sizeCopied);
memcpy(newArray, (jchar const *)window->offsetToPtr(field.data.buffer.offset), size);
} else {
memcpy(dst, (jchar const *)window->offsetToPtr(field.data.buffer.offset), size);
}
#endif
}
} else if (type == FIELD_TYPE_INTEGER) {
int64_t value;
if (window->getLong(row, column, &value)) {
char buf[32];
int len;
snprintf(buf, sizeof(buf), "%lld", value);
jchar* dst = env->GetCharArrayElements(buffer, NULL);
sizeCopied = charToJchar(buf, dst, bufferSize);
}
} else if (type == FIELD_TYPE_FLOAT) {
double value;
if (window->getDouble(row, column, &value)) {
char tempbuf[32];
snprintf(tempbuf, sizeof(tempbuf), "%g", value);
jchar* dst = env->GetCharArrayElements(buffer, NULL);
sizeCopied = charToJchar(tempbuf, dst, bufferSize);
}
} else if (type == FIELD_TYPE_NULL) {
} else if (type == FIELD_TYPE_BLOB) {
throw_sqlite3_exception(env, "Unable to convert BLOB to string");
} else {
LOGE("Unknown field type %d", type);
throw_sqlite3_exception(env, "UNKNOWN type in copyStringToBuffer_native()");
}
SET_SIZE_COPIED(env, buf, sizeCopied);
env->ReleaseCharArrayElements(buffer, dst, JNI_OK);
return newArray;
}