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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <limits.h>
#include <stdio.h>
#include "nsError.h"
#include "nsMemory.h"
#include "nsThreadUtils.h"
#include "nsIClassInfoImpl.h"
#include "Variant.h"
#include "mozIStorageError.h"
#include "mozStorageBindingParams.h"
#include "mozStorageConnection.h"
#include "mozStorageStatementJSHelper.h"
#include "mozStoragePrivateHelpers.h"
#include "mozStorageStatementParams.h"
#include "mozStorageStatementRow.h"
#include "mozStorageStatement.h"
#include "mozilla/Logging.h"
#include "mozilla/Printf.h"
#include "mozilla/ProfilerLabels.h"
extern mozilla::LazyLogModule gStorageLog;
namespace mozilla {
namespace storage {
////////////////////////////////////////////////////////////////////////////////
//// nsIClassInfo
NS_IMPL_CI_INTERFACE_GETTER(Statement, mozIStorageStatement,
mozIStorageBaseStatement, mozIStorageBindingParams,
mozIStorageValueArray,
mozilla::storage::StorageBaseStatementInternal)
class StatementClassInfo : public nsIClassInfo {
public:
constexpr StatementClassInfo() {}
NS_DECL_ISUPPORTS_INHERITED
NS_IMETHOD
GetInterfaces(nsTArray<nsIID>& _array) override {
return NS_CI_INTERFACE_GETTER_NAME(Statement)(_array);
}
NS_IMETHOD
GetScriptableHelper(nsIXPCScriptable** _helper) override {
static StatementJSHelper sJSHelper;
*_helper = &sJSHelper;
return NS_OK;
}
NS_IMETHOD
GetContractID(nsACString& aContractID) override {
aContractID.SetIsVoid(true);
return NS_OK;
}
NS_IMETHOD
GetClassDescription(nsACString& aDesc) override {
aDesc.SetIsVoid(true);
return NS_OK;
}
NS_IMETHOD
GetClassID(nsCID** _id) override {
*_id = nullptr;
return NS_OK;
}
NS_IMETHOD
GetFlags(uint32_t* _flags) override {
*_flags = 0;
return NS_OK;
}
NS_IMETHOD
GetClassIDNoAlloc(nsCID* _cid) override { return NS_ERROR_NOT_AVAILABLE; }
};
NS_IMETHODIMP_(MozExternalRefCountType) StatementClassInfo::AddRef() {
return 2;
}
NS_IMETHODIMP_(MozExternalRefCountType) StatementClassInfo::Release() {
return 1;
}
NS_IMPL_QUERY_INTERFACE(StatementClassInfo, nsIClassInfo)
static StatementClassInfo sStatementClassInfo;
////////////////////////////////////////////////////////////////////////////////
//// Statement
Statement::Statement()
: StorageBaseStatementInternal(),
mDBStatement(nullptr),
mParamCount(0),
mResultColumnCount(0),
mColumnNames(),
mExecuting(false),
mQueryStatusRecorded(false),
mHasExecuted(false) {}
nsresult Statement::initialize(Connection* aDBConnection,
sqlite3* aNativeConnection,
const nsACString& aSQLStatement) {
MOZ_ASSERT(aDBConnection, "No database connection given!");
MOZ_ASSERT(aDBConnection->isConnectionReadyOnThisThread(),
"Database connection should be valid");
MOZ_ASSERT(!mDBStatement, "Statement already initialized!");
MOZ_ASSERT(aNativeConnection, "No native connection given!");
int srv = aDBConnection->prepareStatement(
aNativeConnection, PromiseFlatCString(aSQLStatement), &mDBStatement);
if (srv != SQLITE_OK) {
MOZ_LOG(gStorageLog, LogLevel::Error,
("Sqlite statement prepare error: %d '%s'", srv,
::sqlite3_errmsg(aNativeConnection)));
MOZ_LOG(gStorageLog, LogLevel::Error,
("Statement was: '%s'", PromiseFlatCString(aSQLStatement).get()));
aDBConnection->RecordQueryStatus(srv);
mQueryStatusRecorded = true;
return NS_ERROR_FAILURE;
}
MOZ_LOG(gStorageLog, LogLevel::Debug,
("Initialized statement '%s' (0x%p)",
PromiseFlatCString(aSQLStatement).get(), mDBStatement));
mDBConnection = aDBConnection;
mNativeConnection = aNativeConnection;
mParamCount = ::sqlite3_bind_parameter_count(mDBStatement);
mResultColumnCount = ::sqlite3_column_count(mDBStatement);
mColumnNames.Clear();
nsCString* columnNames = mColumnNames.AppendElements(mResultColumnCount);
for (uint32_t i = 0; i < mResultColumnCount; i++) {
const char* name = ::sqlite3_column_name(mDBStatement, i);
columnNames[i].Assign(name);
}
#ifdef DEBUG
// We want to try and test for LIKE and that consumers are using
// escapeStringForLIKE instead of just trusting user input. The idea to
// check to see if they are binding a parameter after like instead of just
// using a string. We only do this in debug builds because it's expensive!
auto c = nsCaseInsensitiveCStringComparator;
nsACString::const_iterator start, end, e;
aSQLStatement.BeginReading(start);
aSQLStatement.EndReading(end);
e = end;
while (::FindInReadable(" LIKE"_ns, start, e, c)) {
// We have a LIKE in here, so we perform our tests
// FindInReadable moves the iterator, so we have to get a new one for
// each test we perform.
nsACString::const_iterator s1, s2, s3;
s1 = s2 = s3 = start;
if (!(::FindInReadable(" LIKE ?"_ns, s1, end, c) ||
::FindInReadable(" LIKE :"_ns, s2, end, c) ||
::FindInReadable(" LIKE @"_ns, s3, end, c))) {
// At this point, we didn't find a LIKE statement followed by ?, :,
// or @, all of which are valid characters for binding a parameter.
// We will warn the consumer that they may not be safely using LIKE.
NS_WARNING(
"Unsafe use of LIKE detected! Please ensure that you "
"are using mozIStorageStatement::escapeStringForLIKE "
"and that you are binding that result to the statement "
"to prevent SQL injection attacks.");
}
// resetting start and e
start = e;
e = end;
}
#endif
return NS_OK;
}
mozIStorageBindingParams* Statement::getParams() {
nsresult rv;
// If we do not have an array object yet, make it.
if (!mParamsArray) {
nsCOMPtr<mozIStorageBindingParamsArray> array;
rv = NewBindingParamsArray(getter_AddRefs(array));
NS_ENSURE_SUCCESS(rv, nullptr);
mParamsArray = static_cast<BindingParamsArray*>(array.get());
}
// If there isn't already any rows added, we'll have to add one to use.
if (mParamsArray->length() == 0) {
RefPtr<BindingParams> params(new BindingParams(mParamsArray, this));
NS_ENSURE_TRUE(params, nullptr);
rv = mParamsArray->AddParams(params);
NS_ENSURE_SUCCESS(rv, nullptr);
// We have to unlock our params because AddParams locks them. This is safe
// because no reference to the params object was, or ever will be given out.
params->unlock(this);
// We also want to lock our array at this point - we don't want anything to
// be added to it. Nothing has, or will ever get a reference to it, but we
// will get additional safety checks via assertions by doing this.
mParamsArray->lock();
}
return *mParamsArray->begin();
}
void Statement::MaybeRecordQueryStatus(int srv, bool isResetting) {
// If the statement hasn't been executed synchronously since it was last reset
// or created then there is no need to record anything. Asynchronous
// statements have their status tracked and recorded by StatementData.
if (!mHasExecuted) {
return;
}
if (!isResetting && !isErrorCode(srv)) {
// Non-errors will be recorded when finalizing.
return;
}
// We only record a status if no status has been recorded previously.
if (!mQueryStatusRecorded && mDBConnection) {
mDBConnection->RecordQueryStatus(srv);
}
// Allow another status to be recorded if we are resetting this statement.
mQueryStatusRecorded = !isResetting;
}
Statement::~Statement() { (void)internalFinalize(true); }
////////////////////////////////////////////////////////////////////////////////
//// nsISupports
NS_IMPL_ADDREF(Statement)
NS_IMPL_RELEASE(Statement)
NS_INTERFACE_MAP_BEGIN(Statement)
NS_INTERFACE_MAP_ENTRY(mozIStorageStatement)
NS_INTERFACE_MAP_ENTRY(mozIStorageBaseStatement)
NS_INTERFACE_MAP_ENTRY(mozIStorageBindingParams)
NS_INTERFACE_MAP_ENTRY(mozIStorageValueArray)
NS_INTERFACE_MAP_ENTRY(mozilla::storage::StorageBaseStatementInternal)
if (aIID.Equals(NS_GET_IID(nsIClassInfo))) {
foundInterface = static_cast<nsIClassInfo*>(&sStatementClassInfo);
} else
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, mozIStorageStatement)
NS_INTERFACE_MAP_END
////////////////////////////////////////////////////////////////////////////////
//// StorageBaseStatementInternal
Connection* Statement::getOwner() { return mDBConnection; }
int Statement::getAsyncStatement(sqlite3_stmt** _stmt) {
// If we have no statement, we shouldn't be calling this method!
NS_ASSERTION(mDBStatement != nullptr, "We have no statement to clone!");
// If we do not yet have a cached async statement, clone our statement now.
if (!mAsyncStatement) {
nsDependentCString sql(::sqlite3_sql(mDBStatement));
int rc = mDBConnection->prepareStatement(mNativeConnection, sql,
&mAsyncStatement);
if (rc != SQLITE_OK) {
mDBConnection->RecordQueryStatus(rc);
*_stmt = nullptr;
return rc;
}
MOZ_LOG(gStorageLog, LogLevel::Debug,
("Cloned statement 0x%p to 0x%p", mDBStatement, mAsyncStatement));
}
*_stmt = mAsyncStatement;
return SQLITE_OK;
}
nsresult Statement::getAsynchronousStatementData(StatementData& _data) {
if (!mDBStatement) return NS_ERROR_UNEXPECTED;
sqlite3_stmt* stmt;
int rc = getAsyncStatement(&stmt);
if (rc != SQLITE_OK) return convertResultCode(rc);
_data = StatementData(stmt, bindingParamsArray(), this);
return NS_OK;
}
already_AddRefed<mozIStorageBindingParams> Statement::newBindingParams(
mozIStorageBindingParamsArray* aOwner) {
nsCOMPtr<mozIStorageBindingParams> params = new BindingParams(aOwner, this);
return params.forget();
}
////////////////////////////////////////////////////////////////////////////////
//// mozIStorageStatement
// proxy to StorageBaseStatementInternal using its define helper.
MIXIN_IMPL_STORAGEBASESTATEMENTINTERNAL(Statement, (void)0;)
NS_IMETHODIMP
Statement::Clone(mozIStorageStatement** _statement) {
RefPtr<Statement> statement(new Statement());
NS_ENSURE_TRUE(statement, NS_ERROR_OUT_OF_MEMORY);
nsAutoCString sql(::sqlite3_sql(mDBStatement));
nsresult rv = statement->initialize(mDBConnection, mNativeConnection, sql);
NS_ENSURE_SUCCESS(rv, rv);
statement.forget(_statement);
return NS_OK;
}
NS_IMETHODIMP
Statement::Finalize() { return internalFinalize(false); }
nsresult Statement::internalFinalize(bool aDestructing) {
if (!mDBStatement) return NS_OK;
int srv = SQLITE_OK;
{
// If the statement ends up being finalized twice, the second finalization
// would apply to a dangling pointer and may cause unexpected consequences.
// Thus we must be sure that the connection state won't change during this
// operation, to avoid racing with finalizations made by the closing
// connection. See Connection::internalClose().
MutexAutoLock lockedScope(mDBConnection->sharedAsyncExecutionMutex);
if (!mDBConnection->isClosed(lockedScope)) {
MOZ_LOG(gStorageLog, LogLevel::Debug,
("Finalizing statement '%s' during garbage-collection",
::sqlite3_sql(mDBStatement)));
srv = ::sqlite3_finalize(mDBStatement);
}
#ifdef DEBUG
else {
// The database connection is closed. The sqlite
// statement has either been finalized already by the connection
// or is about to be finalized by the connection.
//
// Finalizing it here would be useless and segfaultish.
//
// Note that we can't display the statement itself, as the data structure
// is not valid anymore. However, the address shown here should help
// developers correlate with the more complete debug message triggered
// by AsyncClose().
SmprintfPointer msg = ::mozilla::Smprintf(
"SQL statement (%p) should have been finalized"
" before garbage-collection. For more details on this statement, set"
" NSPR_LOG_MESSAGES=mozStorage:5 .",
mDBStatement);
NS_WARNING(msg.get());
// Use %s so we aren't exposing random strings to printf interpolation.
MOZ_LOG(gStorageLog, LogLevel::Warning, ("%s", msg.get()));
}
#endif // DEBUG
}
// This will be a no-op if the status has already been recorded or if this
// statement has not been executed. Async statements have their status
// tracked and recorded in StatementData.
MaybeRecordQueryStatus(srv, true);
mDBStatement = nullptr;
if (mAsyncStatement) {
// If the destructor called us, there are no pending async statements (they
// hold a reference to us) and we can/must just kill the statement directly.
if (aDestructing)
destructorAsyncFinalize();
else
asyncFinalize();
}
// Release the holders, so they can release the reference to us.
mStatementParamsHolder = nullptr;
mStatementRowHolder = nullptr;
return convertResultCode(srv);
}
NS_IMETHODIMP
Statement::GetParameterCount(uint32_t* _parameterCount) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
*_parameterCount = mParamCount;
return NS_OK;
}
NS_IMETHODIMP
Statement::GetParameterName(uint32_t aParamIndex, nsACString& _name) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
ENSURE_INDEX_VALUE(aParamIndex, mParamCount);
const char* name =
::sqlite3_bind_parameter_name(mDBStatement, aParamIndex + 1);
if (name == nullptr) {
// this thing had no name, so fake one
nsAutoCString fakeName(":");
fakeName.AppendInt(aParamIndex);
_name.Assign(fakeName);
} else {
_name.Assign(nsDependentCString(name));
}
return NS_OK;
}
NS_IMETHODIMP
Statement::GetParameterIndex(const nsACString& aName, uint32_t* _index) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
// We do not accept any forms of names other than ":name", but we need to add
// the colon for SQLite.
nsAutoCString name(":");
name.Append(aName);
int ind = ::sqlite3_bind_parameter_index(mDBStatement, name.get());
if (ind == 0) // Named parameter not found.
return NS_ERROR_INVALID_ARG;
*_index = ind - 1; // SQLite indexes are 1-based, we are 0-based.
return NS_OK;
}
NS_IMETHODIMP
Statement::GetColumnCount(uint32_t* _columnCount) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
*_columnCount = mResultColumnCount;
return NS_OK;
}
NS_IMETHODIMP
Statement::GetColumnName(uint32_t aColumnIndex, nsACString& _name) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
ENSURE_INDEX_VALUE(aColumnIndex, mResultColumnCount);
const char* cname = ::sqlite3_column_name(mDBStatement, aColumnIndex);
_name.Assign(nsDependentCString(cname));
return NS_OK;
}
NS_IMETHODIMP
Statement::GetColumnIndex(const nsACString& aName, uint32_t* _index) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
// Surprisingly enough, SQLite doesn't provide an API for this. We have to
// determine it ourselves sadly.
for (uint32_t i = 0; i < mResultColumnCount; i++) {
if (mColumnNames[i].Equals(aName)) {
*_index = i;
return NS_OK;
}
}
return NS_ERROR_INVALID_ARG;
}
NS_IMETHODIMP
Statement::Reset() {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
#ifdef DEBUG
MOZ_LOG(gStorageLog, LogLevel::Debug,
("Resetting statement: '%s'", ::sqlite3_sql(mDBStatement)));
checkAndLogStatementPerformance(mDBStatement);
#endif
mParamsArray = nullptr;
(void)sqlite3_reset(mDBStatement);
(void)sqlite3_clear_bindings(mDBStatement);
mExecuting = false;
// This will be a no-op if the status has already been recorded or if this
// statement has not been executed. Async statements have their status
// tracked and recorded in StatementData.
MaybeRecordQueryStatus(SQLITE_OK, true);
mHasExecuted = false;
return NS_OK;
}
NS_IMETHODIMP
Statement::BindParameters(mozIStorageBindingParamsArray* aParameters) {
NS_ENSURE_ARG_POINTER(aParameters);
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
BindingParamsArray* array = static_cast<BindingParamsArray*>(aParameters);
if (array->getOwner() != this) return NS_ERROR_UNEXPECTED;
if (array->length() == 0) return NS_ERROR_UNEXPECTED;
mParamsArray = array;
mParamsArray->lock();
return NS_OK;
}
NS_IMETHODIMP
Statement::Execute() {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
bool ret;
nsresult rv = ExecuteStep(&ret);
nsresult rv2 = Reset();
return NS_FAILED(rv) ? rv : rv2;
}
NS_IMETHODIMP
Statement::ExecuteStep(bool* _moreResults) {
AUTO_PROFILER_LABEL("Statement::ExecuteStep", OTHER);
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
// Bind any parameters first before executing.
if (mParamsArray) {
// If we have more than one row of parameters to bind, they shouldn't be
// calling this method (and instead use executeAsync).
if (mParamsArray->length() != 1) return NS_ERROR_UNEXPECTED;
BindingParamsArray::iterator row = mParamsArray->begin();
nsCOMPtr<IStorageBindingParamsInternal> bindingInternal =
do_QueryInterface(*row);
nsCOMPtr<mozIStorageError> error = bindingInternal->bind(mDBStatement);
if (error) {
int32_t srv;
(void)error->GetResult(&srv);
return convertResultCode(srv);
}
// We have bound, so now we can clear our array.
mParamsArray = nullptr;
}
int srv = mDBConnection->stepStatement(mNativeConnection, mDBStatement);
mHasExecuted = true;
MaybeRecordQueryStatus(srv);
if (srv != SQLITE_ROW && srv != SQLITE_DONE &&
MOZ_LOG_TEST(gStorageLog, LogLevel::Debug)) {
nsAutoCString errStr;
(void)mDBConnection->GetLastErrorString(errStr);
MOZ_LOG(gStorageLog, LogLevel::Debug,
("Statement::ExecuteStep error: %s", errStr.get()));
}
// SQLITE_ROW and SQLITE_DONE are non-errors
if (srv == SQLITE_ROW) {
// we got a row back
mExecuting = true;
*_moreResults = true;
return NS_OK;
} else if (srv == SQLITE_DONE) {
// statement is done (no row returned)
mExecuting = false;
*_moreResults = false;
return NS_OK;
} else if (srv == SQLITE_BUSY || srv == SQLITE_MISUSE) {
mExecuting = false;
} else if (mExecuting) {
MOZ_LOG(gStorageLog, LogLevel::Error,
("SQLite error after mExecuting was true!"));
mExecuting = false;
}
return convertResultCode(srv);
}
NS_IMETHODIMP
Statement::GetState(int32_t* _state) {
if (!mDBStatement)
*_state = MOZ_STORAGE_STATEMENT_INVALID;
else if (mExecuting)
*_state = MOZ_STORAGE_STATEMENT_EXECUTING;
else
*_state = MOZ_STORAGE_STATEMENT_READY;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
//// mozIStorageValueArray (now part of mozIStorageStatement too)
NS_IMETHODIMP
Statement::GetNumEntries(uint32_t* _length) {
*_length = mResultColumnCount;
return NS_OK;
}
NS_IMETHODIMP
Statement::GetTypeOfIndex(uint32_t aIndex, int32_t* _type) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
ENSURE_INDEX_VALUE(aIndex, mResultColumnCount);
if (!mExecuting) return NS_ERROR_UNEXPECTED;
int t = ::sqlite3_column_type(mDBStatement, aIndex);
switch (t) {
case SQLITE_INTEGER:
*_type = mozIStorageStatement::VALUE_TYPE_INTEGER;
break;
case SQLITE_FLOAT:
*_type = mozIStorageStatement::VALUE_TYPE_FLOAT;
break;
case SQLITE_TEXT:
*_type = mozIStorageStatement::VALUE_TYPE_TEXT;
break;
case SQLITE_BLOB:
*_type = mozIStorageStatement::VALUE_TYPE_BLOB;
break;
case SQLITE_NULL:
*_type = mozIStorageStatement::VALUE_TYPE_NULL;
break;
default:
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
Statement::GetInt32(uint32_t aIndex, int32_t* _value) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
ENSURE_INDEX_VALUE(aIndex, mResultColumnCount);
if (!mExecuting) return NS_ERROR_UNEXPECTED;
*_value = ::sqlite3_column_int(mDBStatement, aIndex);
return NS_OK;
}
NS_IMETHODIMP
Statement::GetInt64(uint32_t aIndex, int64_t* _value) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
ENSURE_INDEX_VALUE(aIndex, mResultColumnCount);
if (!mExecuting) return NS_ERROR_UNEXPECTED;
*_value = ::sqlite3_column_int64(mDBStatement, aIndex);
return NS_OK;
}
NS_IMETHODIMP
Statement::GetDouble(uint32_t aIndex, double* _value) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
ENSURE_INDEX_VALUE(aIndex, mResultColumnCount);
if (!mExecuting) return NS_ERROR_UNEXPECTED;
*_value = ::sqlite3_column_double(mDBStatement, aIndex);
return NS_OK;
}
NS_IMETHODIMP
Statement::GetUTF8String(uint32_t aIndex, nsACString& _value) {
// Get type of Index will check aIndex for us, so we don't have to.
int32_t type;
nsresult rv = GetTypeOfIndex(aIndex, &type);
NS_ENSURE_SUCCESS(rv, rv);
if (type == mozIStorageStatement::VALUE_TYPE_NULL) {
// NULL columns should have IsVoid set to distinguish them from the empty
// string.
_value.SetIsVoid(true);
} else {
const char* value = reinterpret_cast<const char*>(
::sqlite3_column_text(mDBStatement, aIndex));
_value.Assign(value, ::sqlite3_column_bytes(mDBStatement, aIndex));
}
return NS_OK;
}
NS_IMETHODIMP
Statement::GetString(uint32_t aIndex, nsAString& _value) {
// Get type of Index will check aIndex for us, so we don't have to.
int32_t type;
nsresult rv = GetTypeOfIndex(aIndex, &type);
NS_ENSURE_SUCCESS(rv, rv);
if (type == mozIStorageStatement::VALUE_TYPE_NULL) {
// NULL columns should have IsVoid set to distinguish them from the empty
// string.
_value.SetIsVoid(true);
} else {
const char16_t* value = static_cast<const char16_t*>(
::sqlite3_column_text16(mDBStatement, aIndex));
_value.Assign(value, ::sqlite3_column_bytes16(mDBStatement, aIndex) /
sizeof(char16_t));
}
return NS_OK;
}
NS_IMETHODIMP
Statement::GetVariant(uint32_t aIndex, nsIVariant** _value) {
if (!mDBStatement) {
return NS_ERROR_NOT_INITIALIZED;
}
ENSURE_INDEX_VALUE(aIndex, mResultColumnCount);
if (!mExecuting) {
return NS_ERROR_UNEXPECTED;
}
nsCOMPtr<nsIVariant> variant;
int type = ::sqlite3_column_type(mDBStatement, aIndex);
switch (type) {
case SQLITE_INTEGER:
variant =
new IntegerVariant(::sqlite3_column_int64(mDBStatement, aIndex));
break;
case SQLITE_FLOAT:
variant = new FloatVariant(::sqlite3_column_double(mDBStatement, aIndex));
break;
case SQLITE_TEXT: {
const char16_t* value = static_cast<const char16_t*>(
::sqlite3_column_text16(mDBStatement, aIndex));
nsDependentString str(
value,
::sqlite3_column_bytes16(mDBStatement, aIndex) / sizeof(char16_t));
variant = new TextVariant(str);
break;
}
case SQLITE_NULL:
variant = new NullVariant();
break;
case SQLITE_BLOB: {
int size = ::sqlite3_column_bytes(mDBStatement, aIndex);
const void* data = ::sqlite3_column_blob(mDBStatement, aIndex);
variant = new BlobVariant(std::pair<const void*, int>(data, size));
break;
}
}
NS_ENSURE_TRUE(variant, NS_ERROR_UNEXPECTED);
variant.forget(_value);
return NS_OK;
}
NS_IMETHODIMP
Statement::GetBlob(uint32_t aIndex, uint32_t* _size, uint8_t** _blob) {
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;
ENSURE_INDEX_VALUE(aIndex, mResultColumnCount);
if (!mExecuting) return NS_ERROR_UNEXPECTED;
int size = ::sqlite3_column_bytes(mDBStatement, aIndex);
void* blob = nullptr;
if (size) {
blob = moz_xmemdup(::sqlite3_column_blob(mDBStatement, aIndex), size);
}
*_blob = static_cast<uint8_t*>(blob);
*_size = size;
return NS_OK;
}
NS_IMETHODIMP
Statement::GetBlobAsString(uint32_t aIndex, nsAString& aValue) {
return DoGetBlobAsString(this, aIndex, aValue);
}
NS_IMETHODIMP
Statement::GetBlobAsUTF8String(uint32_t aIndex, nsACString& aValue) {
return DoGetBlobAsString(this, aIndex, aValue);
}
NS_IMETHODIMP
Statement::GetSharedUTF8String(uint32_t aIndex, uint32_t* _byteLength,
const char** _value) {
*_value = reinterpret_cast<const char*>(
::sqlite3_column_text(mDBStatement, aIndex));
if (_byteLength) {
*_byteLength = ::sqlite3_column_bytes(mDBStatement, aIndex);
}
return NS_OK;
}
NS_IMETHODIMP
Statement::GetSharedString(uint32_t aIndex, uint32_t* _byteLength,
const char16_t** _value) {
*_value = static_cast<const char16_t*>(
::sqlite3_column_text16(mDBStatement, aIndex));
if (_byteLength) {
*_byteLength = ::sqlite3_column_bytes16(mDBStatement, aIndex);
}
return NS_OK;
}
NS_IMETHODIMP
Statement::GetSharedBlob(uint32_t aIndex, uint32_t* _byteLength,
const uint8_t** _blob) {
*_blob =
static_cast<const uint8_t*>(::sqlite3_column_blob(mDBStatement, aIndex));
if (_byteLength) {
*_byteLength = ::sqlite3_column_bytes(mDBStatement, aIndex);
}
return NS_OK;
}
NS_IMETHODIMP
Statement::GetIsNull(uint32_t aIndex, bool* _isNull) {
// Get type of Index will check aIndex for us, so we don't have to.
int32_t type;
nsresult rv = GetTypeOfIndex(aIndex, &type);
NS_ENSURE_SUCCESS(rv, rv);
*_isNull = (type == mozIStorageStatement::VALUE_TYPE_NULL);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
//// mozIStorageBindingParams
BOILERPLATE_BIND_PROXIES(Statement,
if (!mDBStatement) return NS_ERROR_NOT_INITIALIZED;)
} // namespace storage
} // namespace mozilla