extern "C" NS_EXPORT jobject JNICALL
Java_org_mozilla_gecko_sqlite_SQLiteBridge_sqliteCall(JNIEnv* jenv, jclass,
jstring jDb,
jstring jQuery,
jobjectArray jParams,
jlongArray jQueryRes)
{
JNI_Setup(jenv);
int rc;
jobject jCursor = NULL;
const char* dbPath;
sqlite3 *db;
char* errorMsg;
dbPath = jenv->GetStringUTFChars(jDb, NULL);
rc = f_sqlite3_open(dbPath, &db);
jenv->ReleaseStringUTFChars(jDb, dbPath);
if (rc != SQLITE_OK) {
asprintf(&errorMsg, "Can't open database: %s\n", f_sqlite3_errmsg(db));
LOG("Error in SQLiteBridge: %s\n", errorMsg);
JNI_Throw(jenv, "org/mozilla/gecko/sqlite/SQLiteBridgeException", errorMsg);
free(errorMsg);
} else {
jCursor = sqliteInternalCall(jenv, db, jQuery, jParams, jQueryRes);
}
f_sqlite3_close(db);
return jCursor;
}
extern "C" NS_EXPORT jobject MOZ_JNICALL
Java_org_mozilla_gecko_sqlite_SQLiteBridge_sqliteCall(JNIEnv* jenv, jclass,
jstring jDb,
jstring jQuery,
jobjectArray jParams,
jlongArray jQueryRes)
{
JNI_Setup(jenv);
int rc;
jobject jCursor = nullptr;
const char* dbPath;
sqlite3 *db;
dbPath = jenv->GetStringUTFChars(jDb, nullptr);
rc = f_sqlite3_open(dbPath, &db);
jenv->ReleaseStringUTFChars(jDb, dbPath);
if (rc != SQLITE_OK) {
throwSqliteException(jenv,
"Can't open database: %s", f_sqlite3_errmsg(db));
f_sqlite3_close(db); // close db even if open failed
return nullptr;
}
jCursor = sqliteInternalCall(jenv, db, jQuery, jParams, jQueryRes);
f_sqlite3_close(db);
return jCursor;
}
extern "C" NS_EXPORT jlong MOZ_JNICALL
Java_org_mozilla_gecko_sqlite_SQLiteBridge_openDatabase(JNIEnv* jenv, jclass,
jstring jDb)
{
JNI_Setup(jenv);
int rc;
const char* dbPath;
sqlite3 *db;
dbPath = jenv->GetStringUTFChars(jDb, nullptr);
rc = f_sqlite3_open(dbPath, &db);
jenv->ReleaseStringUTFChars(jDb, dbPath);
if (rc != SQLITE_OK) {
throwSqliteException(jenv,
"Can't open database: %s", f_sqlite3_errmsg(db));
f_sqlite3_close(db); // close db even if open failed
return 0;
}
return (jlong)db;
}
extern "C" NS_EXPORT jlong JNICALL
Java_org_mozilla_gecko_sqlite_SQLiteBridge_openDatabase(JNIEnv* jenv, jclass,
jstring jDb)
{
JNI_Setup(jenv);
int rc;
const char* dbPath;
sqlite3 *db;
char* errorMsg;
dbPath = jenv->GetStringUTFChars(jDb, NULL);
rc = f_sqlite3_open(dbPath, &db);
jenv->ReleaseStringUTFChars(jDb, dbPath);
if (rc != SQLITE_OK) {
asprintf(&errorMsg, "Can't open database: %s\n", f_sqlite3_errmsg(db));
LOG("Error in SQLiteBridge: %s\n", errorMsg);
JNI_Throw(jenv, "org/mozilla/gecko/sqlite/SQLiteBridgeException", errorMsg);
free(errorMsg);
}
return (jlong)db;
}
extern "C" NS_EXPORT jobject JNICALL
Java_org_mozilla_gecko_sqlite_SQLiteBridge_sqliteCall(JNIEnv* jenv, jclass,
jstring jDb,
jstring jQuery,
jobjectArray jParams,
jlongArray jQueryRes)
{
JNI_Setup(jenv);
jobject jCursor = NULL;
char* errorMsg;
jsize numPars = 0;
const char* queryStr;
queryStr = jenv->GetStringUTFChars(jQuery, NULL);
const char* dbPath;
dbPath = jenv->GetStringUTFChars(jDb, NULL);
const char *pzTail;
sqlite3_stmt *ppStmt;
sqlite3 *db;
int rc;
rc = f_sqlite3_open(dbPath, &db);
jenv->ReleaseStringUTFChars(jDb, dbPath);
if (rc != SQLITE_OK) {
asprintf(&errorMsg, "Can't open database: %s\n", f_sqlite3_errmsg(db));
goto error_close;
}
rc = f_sqlite3_prepare_v2(db, queryStr, -1, &ppStmt, &pzTail);
if (rc != SQLITE_OK || ppStmt == NULL) {
asprintf(&errorMsg, "Can't prepare statement: %s\n", f_sqlite3_errmsg(db));
goto error_close;
}
jenv->ReleaseStringUTFChars(jQuery, queryStr);
// Check if number of parameters matches
if (jParams != NULL) {
numPars = jenv->GetArrayLength(jParams);
}
int sqlNumPars;
sqlNumPars = f_sqlite3_bind_parameter_count(ppStmt);
if (numPars != sqlNumPars) {
asprintf(&errorMsg, "Passed parameter count (%d) doesn't match SQL parameter count (%d)\n",
numPars, sqlNumPars);
goto error_close;
}
if (jParams != NULL) {
// Bind parameters, if any
if (numPars > 0) {
for (int i = 0; i < numPars; i++) {
jobject jObjectParam = jenv->GetObjectArrayElement(jParams, i);
// IsInstanceOf or isAssignableFrom? String is final, so IsInstanceOf
// should be OK.
jboolean isString = jenv->IsInstanceOf(jObjectParam, stringClass);
if (isString != JNI_TRUE) {
asprintf(&errorMsg, "Parameter is not of String type");
goto error_close;
}
jstring jStringParam = (jstring)jObjectParam;
const char* paramStr = jenv->GetStringUTFChars(jStringParam, NULL);
// SQLite parameters index from 1.
rc = f_sqlite3_bind_text(ppStmt, i + 1, paramStr, -1, SQLITE_TRANSIENT);
jenv->ReleaseStringUTFChars(jStringParam, paramStr);
if (rc != SQLITE_OK) {
asprintf(&errorMsg, "Error binding query parameter");
goto error_close;
}
}
}
}
// Execute the query and step through the results
rc = f_sqlite3_step(ppStmt);
if (rc != SQLITE_ROW && rc != SQLITE_DONE) {
asprintf(&errorMsg, "Can't step statement: (%d) %s\n", rc, f_sqlite3_errmsg(db));
goto error_close;
}
// Get the column count and names
int cols;
cols = f_sqlite3_column_count(ppStmt);
{
// Allocate a String[cols]
jobjectArray jStringArray = jenv->NewObjectArray(cols,
stringClass,
NULL);
if (jStringArray == NULL) {
asprintf(&errorMsg, "Can't allocate String[]\n");
goto error_close;
}
// Assign column names to the String[]
for (int i = 0; i < cols; i++) {
const char* colName = f_sqlite3_column_name(ppStmt, i);
jstring jStr = jenv->NewStringUTF(colName);
jenv->SetObjectArrayElement(jStringArray, i, jStr);
}
// Construct the MatrixCursor(String[]) with given column names
jCursor = jenv->NewObject(cursorClass,
jCursorConstructor,
jStringArray);
if (jCursor == NULL) {
asprintf(&errorMsg, "Can't allocate MatrixBlobCursor\n");
goto error_close;
}
}
// Return the id and number of changed rows in jQueryRes
{
jlong id = f_sqlite3_last_insert_rowid(db);
jenv->SetLongArrayRegion(jQueryRes, 0, 1, &id);
jlong changed = f_sqlite3_changes(db);
jenv->SetLongArrayRegion(jQueryRes, 1, 1, &changed);
}
// For each row, add an Object[] to the passed ArrayList,
// with that containing either String or ByteArray objects
// containing the columns
while (rc != SQLITE_DONE) {
// Process row
// Construct Object[]
jobjectArray jRow = jenv->NewObjectArray(cols,
objectClass,
NULL);
if (jRow == NULL) {
asprintf(&errorMsg, "Can't allocate jRow Object[]\n");
goto error_close;
}
for (int i = 0; i < cols; i++) {
int colType = f_sqlite3_column_type(ppStmt, i);
if (colType == SQLITE_BLOB) {
// Treat as blob
const void* blob = f_sqlite3_column_blob(ppStmt, i);
int colLen = f_sqlite3_column_bytes(ppStmt, i);
// Construct ByteBuffer of correct size
jobject jByteBuffer =
jenv->CallStaticObjectMethod(byteBufferClass,
jByteBufferAllocateDirect,
colLen);
if (jByteBuffer == NULL) {
goto error_close;
}
// Get its backing array
void* bufferArray = jenv->GetDirectBufferAddress(jByteBuffer);
if (bufferArray == NULL) {
asprintf(&errorMsg, "Failure calling GetDirectBufferAddress\n");
goto error_close;
}
memcpy(bufferArray, blob, colLen);
jenv->SetObjectArrayElement(jRow, i, jByteBuffer);
jenv->DeleteLocalRef(jByteBuffer);
} else if (colType == SQLITE_NULL) {
jenv->SetObjectArrayElement(jRow, i, NULL);
} else {
// Treat everything else as text
const char* txt = (const char*)f_sqlite3_column_text(ppStmt, i);
jstring jStr = jenv->NewStringUTF(txt);
jenv->SetObjectArrayElement(jRow, i, jStr);
jenv->DeleteLocalRef(jStr);
}
}
// Append Object[] to Cursor
jenv->CallVoidMethod(jCursor, jCursorAddRow, jRow);
// Clean up
jenv->DeleteLocalRef(jRow);
// Get next row
rc = f_sqlite3_step(ppStmt);
// Real error?
if (rc != SQLITE_ROW && rc != SQLITE_DONE) {
asprintf(&errorMsg, "Can't re-step statement:(%d) %s\n", rc, f_sqlite3_errmsg(db));
goto error_close;
}
}
rc = f_sqlite3_finalize(ppStmt);
if (rc != SQLITE_OK) {
asprintf(&errorMsg, "Can't finalize statement: %s\n", f_sqlite3_errmsg(db));
goto error_close;
}
f_sqlite3_close(db);
return jCursor;
error_close:
f_sqlite3_close(db);
LOG("Error in SQLiteBridge: %s\n", errorMsg);
JNI_Throw(jenv, "org/mozilla/gecko/sqlite/SQLiteBridgeException", errorMsg);
free(errorMsg);
return jCursor;
}
