mozilla
/
gecko-dev
зеркало из https://github.com/mozilla/gecko-dev.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
gecko-dev/dom/indexedDB/IDBIndex.cpp

1455 строки
41 KiB
C++
Исходник Ответственный История

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Indexed Database.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Shawn Wilsher <me@shawnwilsher.com>
* Ben Turner <bent.mozilla@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "IDBIndex.h"
#include "nsIIDBKeyRange.h"
#include "nsIJSContextStack.h"
#include "nsDOMClassInfoID.h"
#include "nsEventDispatcher.h"
#include "nsThreadUtils.h"
#include "mozilla/storage.h"
#include "xpcpublic.h"
#include "AsyncConnectionHelper.h"
#include "IDBCursor.h"
#include "IDBEvents.h"
#include "IDBKeyRange.h"
#include "IDBObjectStore.h"
#include "IDBTransaction.h"
#include "DatabaseInfo.h"
USING_INDEXEDDB_NAMESPACE
namespace {
class GetKeyHelper : public AsyncConnectionHelper
{
public:
GetKeyHelper(IDBTransaction* aTransaction,
IDBRequest* aRequest,
IDBIndex* aIndex,
IDBKeyRange* aKeyRange)
: AsyncConnectionHelper(aTransaction, aRequest), mIndex(aIndex),
mKeyRange(aKeyRange)
{ }
nsresult DoDatabaseWork(mozIStorageConnection* aConnection);
nsresult GetSuccessResult(JSContext* aCx,
jsval* aVal);
void ReleaseMainThreadObjects()
{
mIndex = nsnull;
mKeyRange = nsnull;
AsyncConnectionHelper::ReleaseMainThreadObjects();
}
protected:
// In-params.
nsRefPtr<IDBIndex> mIndex;
nsRefPtr<IDBKeyRange> mKeyRange;
// Out-params.
Key mKey;
};
class GetHelper : public GetKeyHelper
{
public:
GetHelper(IDBTransaction* aTransaction,
IDBRequest* aRequest,
IDBIndex* aIndex,
IDBKeyRange* aKeyRange)
: GetKeyHelper(aTransaction, aRequest, aIndex, aKeyRange)
{ }
~GetHelper()
{
IDBObjectStore::ClearStructuredCloneBuffer(mCloneReadInfo.mCloneBuffer);
}
nsresult DoDatabaseWork(mozIStorageConnection* aConnection);
nsresult GetSuccessResult(JSContext* aCx,
jsval* aVal);
void ReleaseMainThreadObjects()
{
IDBObjectStore::ClearStructuredCloneBuffer(mCloneReadInfo.mCloneBuffer);
GetKeyHelper::ReleaseMainThreadObjects();
}
protected:
StructuredCloneReadInfo mCloneReadInfo;
};
class GetAllKeysHelper : public GetKeyHelper
{
public:
GetAllKeysHelper(IDBTransaction* aTransaction,
IDBRequest* aRequest,
IDBIndex* aIndex,
IDBKeyRange* aKeyRange,
const PRUint32 aLimit)
: GetKeyHelper(aTransaction, aRequest, aIndex, aKeyRange), mLimit(aLimit)
{ }
nsresult DoDatabaseWork(mozIStorageConnection* aConnection);
nsresult GetSuccessResult(JSContext* aCx,
jsval* aVal);
protected:
const PRUint32 mLimit;
nsTArray<Key> mKeys;
};
class GetAllHelper : public GetKeyHelper
{
public:
GetAllHelper(IDBTransaction* aTransaction,
IDBRequest* aRequest,
IDBIndex* aIndex,
IDBKeyRange* aKeyRange,
const PRUint32 aLimit)
: GetKeyHelper(aTransaction, aRequest, aIndex, aKeyRange), mLimit(aLimit)
{ }
~GetAllHelper()
{
for (PRUint32 index = 0; index < mCloneReadInfos.Length(); index++) {
IDBObjectStore::ClearStructuredCloneBuffer(
mCloneReadInfos[index].mCloneBuffer);
}
}
nsresult DoDatabaseWork(mozIStorageConnection* aConnection);
nsresult GetSuccessResult(JSContext* aCx,
jsval* aVal);
void ReleaseMainThreadObjects()
{
for (PRUint32 index = 0; index < mCloneReadInfos.Length(); index++) {
IDBObjectStore::ClearStructuredCloneBuffer(
mCloneReadInfos[index].mCloneBuffer);
}
GetKeyHelper::ReleaseMainThreadObjects();
}
protected:
const PRUint32 mLimit;
nsTArray<StructuredCloneReadInfo> mCloneReadInfos;
};
class OpenKeyCursorHelper : public AsyncConnectionHelper
{
public:
OpenKeyCursorHelper(IDBTransaction* aTransaction,
IDBRequest* aRequest,
IDBIndex* aIndex,
IDBKeyRange* aKeyRange,
PRUint16 aDirection)
: AsyncConnectionHelper(aTransaction, aRequest), mIndex(aIndex),
mKeyRange(aKeyRange), mDirection(aDirection)
{ }
nsresult DoDatabaseWork(mozIStorageConnection* aConnection);
nsresult GetSuccessResult(JSContext* aCx,
jsval* aVal);
void ReleaseMainThreadObjects()
{
mIndex = nsnull;
mKeyRange = nsnull;
AsyncConnectionHelper::ReleaseMainThreadObjects();
}
private:
// In-params.
nsRefPtr<IDBIndex> mIndex;
nsRefPtr<IDBKeyRange> mKeyRange;
const PRUint16 mDirection;
// Out-params.
Key mKey;
Key mObjectKey;
nsCString mContinueQuery;
nsCString mContinueToQuery;
Key mRangeKey;
};
class OpenCursorHelper : public AsyncConnectionHelper
{
public:
OpenCursorHelper(IDBTransaction* aTransaction,
IDBRequest* aRequest,
IDBIndex* aIndex,
IDBKeyRange* aKeyRange,
PRUint16 aDirection)
: AsyncConnectionHelper(aTransaction, aRequest), mIndex(aIndex),
mKeyRange(aKeyRange), mDirection(aDirection)
{ }
~OpenCursorHelper()
{
IDBObjectStore::ClearStructuredCloneBuffer(mCloneReadInfo.mCloneBuffer);
}
nsresult DoDatabaseWork(mozIStorageConnection* aConnection);
nsresult GetSuccessResult(JSContext* aCx,
jsval* aVal);
void ReleaseMainThreadObjects()
{
mIndex = nsnull;
mKeyRange = nsnull;
AsyncConnectionHelper::ReleaseMainThreadObjects();
}
private:
// In-params.
nsRefPtr<IDBIndex> mIndex;
nsRefPtr<IDBKeyRange> mKeyRange;
const PRUint16 mDirection;
// Out-params.
Key mKey;
Key mObjectKey;
StructuredCloneReadInfo mCloneReadInfo;
nsCString mContinueQuery;
nsCString mContinueToQuery;
Key mRangeKey;
};
class CountHelper : public AsyncConnectionHelper
{
public:
CountHelper(IDBTransaction* aTransaction,
IDBRequest* aRequest,
IDBIndex* aIndex,
IDBKeyRange* aKeyRange)
: AsyncConnectionHelper(aTransaction, aRequest), mIndex(aIndex),
mKeyRange(aKeyRange), mCount(0)
{ }
nsresult DoDatabaseWork(mozIStorageConnection* aConnection);
nsresult GetSuccessResult(JSContext* aCx,
jsval* aVal);
void ReleaseMainThreadObjects()
{
mIndex = nsnull;
mKeyRange = nsnull;
AsyncConnectionHelper::ReleaseMainThreadObjects();
}
private:
nsRefPtr<IDBIndex> mIndex;
nsRefPtr<IDBKeyRange> mKeyRange;
PRUint64 mCount;
};
inline
already_AddRefed<IDBRequest>
GenerateRequest(IDBIndex* aIndex)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
IDBTransaction* transaction = aIndex->ObjectStore()->Transaction();
IDBDatabase* database = transaction->Database();
return IDBRequest::Create(aIndex, database, transaction);
}
} // anonymous namespace
// static
already_AddRefed<IDBIndex>
IDBIndex::Create(IDBObjectStore* aObjectStore,
const IndexInfo* aIndexInfo)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aObjectStore, "Null pointer!");
NS_ASSERTION(aIndexInfo, "Null pointer!");
nsRefPtr<IDBIndex> index = new IDBIndex();
index->mObjectStore = aObjectStore;
index->mId = aIndexInfo->id;
index->mName = aIndexInfo->name;
index->mKeyPath = aIndexInfo->keyPath;
index->mKeyPathArray = aIndexInfo->keyPathArray;
index->mUnique = aIndexInfo->unique;
index->mMultiEntry = aIndexInfo->multiEntry;
return index.forget();
}
IDBIndex::IDBIndex()
: mId(LL_MININT),
mUnique(false)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
}
IDBIndex::~IDBIndex()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
}
NS_IMPL_CYCLE_COLLECTION_CLASS(IDBIndex)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IDBIndex)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mObjectStore)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(IDBIndex)
// Don't unlink mObjectStore!
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IDBIndex)
NS_INTERFACE_MAP_ENTRY(nsIIDBIndex)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(IDBIndex)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(IDBIndex)
NS_IMPL_CYCLE_COLLECTING_RELEASE(IDBIndex)
DOMCI_DATA(IDBIndex, IDBIndex)
NS_IMETHODIMP
IDBIndex::GetName(nsAString& aName)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
aName.Assign(mName);
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::GetStoreName(nsAString& aStoreName)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
return mObjectStore->GetName(aStoreName);
}
NS_IMETHODIMP
IDBIndex::GetKeyPath(JSContext* aCx,
jsval* aVal)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (UsesKeyPathArray()) {
JSObject* array = JS_NewArrayObject(aCx, mKeyPathArray.Length(), nsnull);
if (!array) {
NS_WARNING("Failed to make array!");
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
for (PRUint32 i = 0; i < mKeyPathArray.Length(); ++i) {
jsval val;
nsString tmp(mKeyPathArray[i]);
if (!xpc::StringToJsval(aCx, tmp, &val)) {
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
if (!JS_SetElement(aCx, array, i, &val)) {
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
}
*aVal = OBJECT_TO_JSVAL(array);
}
else {
nsString tmp(mKeyPath);
if (!xpc::StringToJsval(aCx, tmp, aVal)) {
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
}
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::GetUnique(bool* aUnique)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
*aUnique = mUnique;
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::GetMultiEntry(bool* aMultiEntry)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
*aMultiEntry = mMultiEntry;
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::GetObjectStore(nsIIDBObjectStore** aObjectStore)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsCOMPtr<nsIIDBObjectStore> objectStore(mObjectStore);
objectStore.forget(aObjectStore);
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::Get(const jsval& aKey,
JSContext* aCx,
nsIIDBRequest** _retval)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
IDBTransaction* transaction = mObjectStore->Transaction();
if (!transaction->IsOpen()) {
return NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR;
}
nsRefPtr<IDBKeyRange> keyRange;
nsresult rv = IDBKeyRange::FromJSVal(aCx, aKey, getter_AddRefs(keyRange));
NS_ENSURE_SUCCESS(rv, rv);
if (!keyRange) {
// Must specify a key or keyRange for get().
return NS_ERROR_DOM_INDEXEDDB_DATA_ERR;
}
nsRefPtr<IDBRequest> request = GenerateRequest(this);
NS_ENSURE_TRUE(request, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsRefPtr<GetHelper> helper =
new GetHelper(transaction, request, this, keyRange);
rv = helper->DispatchToTransactionPool();
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
request.forget(_retval);
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::GetKey(const jsval& aKey,
JSContext* aCx,
nsIIDBRequest** _retval)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
IDBTransaction* transaction = mObjectStore->Transaction();
if (!transaction->IsOpen()) {
return NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR;
}
nsRefPtr<IDBKeyRange> keyRange;
nsresult rv = IDBKeyRange::FromJSVal(aCx, aKey, getter_AddRefs(keyRange));
NS_ENSURE_SUCCESS(rv, rv);
if (!keyRange) {
// Must specify a key or keyRange for get().
return NS_ERROR_DOM_INDEXEDDB_DATA_ERR;
}
nsRefPtr<IDBRequest> request = GenerateRequest(this);
NS_ENSURE_TRUE(request, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsRefPtr<GetKeyHelper> helper =
new GetKeyHelper(transaction, request, this, keyRange);
rv = helper->DispatchToTransactionPool();
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
request.forget(_retval);
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::GetAll(const jsval& aKey,
PRUint32 aLimit,
JSContext* aCx,
PRUint8 aOptionalArgCount,
nsIIDBRequest** _retval)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
IDBTransaction* transaction = mObjectStore->Transaction();
if (!transaction->IsOpen()) {
return NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR;
}
nsresult rv;
nsRefPtr<IDBKeyRange> keyRange;
if (aOptionalArgCount) {
rv = IDBKeyRange::FromJSVal(aCx, aKey, getter_AddRefs(keyRange));
NS_ENSURE_SUCCESS(rv, rv);
}
if (aOptionalArgCount < 2 || aLimit == 0) {
aLimit = PR_UINT32_MAX;
}
nsRefPtr<IDBRequest> request = GenerateRequest(this);
NS_ENSURE_TRUE(request, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsRefPtr<GetAllHelper> helper =
new GetAllHelper(transaction, request, this, keyRange, aLimit);
rv = helper->DispatchToTransactionPool();
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
request.forget(_retval);
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::GetAllKeys(const jsval& aKey,
PRUint32 aLimit,
JSContext* aCx,
PRUint8 aOptionalArgCount,
nsIIDBRequest** _retval)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
IDBTransaction* transaction = mObjectStore->Transaction();
if (!transaction->IsOpen()) {
return NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR;
}
nsresult rv;
nsRefPtr<IDBKeyRange> keyRange;
if (aOptionalArgCount) {
rv = IDBKeyRange::FromJSVal(aCx, aKey, getter_AddRefs(keyRange));
NS_ENSURE_SUCCESS(rv, rv);
}
if (aOptionalArgCount < 2 || aLimit == 0) {
aLimit = PR_UINT32_MAX;
}
nsRefPtr<IDBRequest> request = GenerateRequest(this);
NS_ENSURE_TRUE(request, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsRefPtr<GetAllKeysHelper> helper =
new GetAllKeysHelper(transaction, request, this, keyRange, aLimit);
rv = helper->DispatchToTransactionPool();
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
request.forget(_retval);
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::OpenCursor(const jsval& aKey,
PRUint16 aDirection,
JSContext* aCx,
PRUint8 aOptionalArgCount,
nsIIDBRequest** _retval)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
IDBTransaction* transaction = mObjectStore->Transaction();
if (!transaction->IsOpen()) {
return NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR;
}
nsresult rv;
nsRefPtr<IDBKeyRange> keyRange;
if (aOptionalArgCount) {
rv = IDBKeyRange::FromJSVal(aCx, aKey, getter_AddRefs(keyRange));
NS_ENSURE_SUCCESS(rv, rv);
if (aOptionalArgCount >= 2) {
if (aDirection != nsIIDBCursor::NEXT &&
aDirection != nsIIDBCursor::NEXT_NO_DUPLICATE &&
aDirection != nsIIDBCursor::PREV &&
aDirection != nsIIDBCursor::PREV_NO_DUPLICATE) {
return NS_ERROR_DOM_INDEXEDDB_NON_TRANSIENT_ERR;
}
}
else {
aDirection = nsIIDBCursor::NEXT;
}
}
nsRefPtr<IDBRequest> request = GenerateRequest(this);
NS_ENSURE_TRUE(request, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsRefPtr<OpenCursorHelper> helper =
new OpenCursorHelper(transaction, request, this, keyRange, aDirection);
rv = helper->DispatchToTransactionPool();
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
request.forget(_retval);
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::OpenKeyCursor(const jsval& aKey,
PRUint16 aDirection,
JSContext* aCx,
PRUint8 aOptionalArgCount,
nsIIDBRequest** _retval)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
IDBTransaction* transaction = mObjectStore->Transaction();
if (!transaction->IsOpen()) {
return NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR;
}
nsresult rv;
nsRefPtr<IDBKeyRange> keyRange;
if (aOptionalArgCount) {
rv = IDBKeyRange::FromJSVal(aCx, aKey, getter_AddRefs(keyRange));
NS_ENSURE_SUCCESS(rv, rv);
if (aOptionalArgCount >= 2) {
if (aDirection != nsIIDBCursor::NEXT &&
aDirection != nsIIDBCursor::NEXT_NO_DUPLICATE &&
aDirection != nsIIDBCursor::PREV &&
aDirection != nsIIDBCursor::PREV_NO_DUPLICATE) {
return NS_ERROR_DOM_INDEXEDDB_NON_TRANSIENT_ERR;
}
}
else {
aDirection = nsIIDBCursor::NEXT;
}
}
nsRefPtr<IDBRequest> request = GenerateRequest(this);
NS_ENSURE_TRUE(request, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsRefPtr<OpenKeyCursorHelper> helper =
new OpenKeyCursorHelper(transaction, request, this, keyRange, aDirection);
rv = helper->DispatchToTransactionPool();
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
request.forget(_retval);
return NS_OK;
}
NS_IMETHODIMP
IDBIndex::Count(const jsval& aKey,
JSContext* aCx,
PRUint8 aOptionalArgCount,
nsIIDBRequest** _retval)
{
IDBTransaction* transaction = mObjectStore->Transaction();
if (!transaction->IsOpen()) {
return NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR;
}
nsresult rv;
nsRefPtr<IDBKeyRange> keyRange;
if (aOptionalArgCount) {
rv = IDBKeyRange::FromJSVal(aCx, aKey, getter_AddRefs(keyRange));
NS_ENSURE_SUCCESS(rv, rv);
}
nsRefPtr<IDBRequest> request = GenerateRequest(this);
NS_ENSURE_TRUE(request, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsRefPtr<CountHelper> helper =
new CountHelper(transaction, request, this, keyRange);
rv = helper->DispatchToTransactionPool();
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
request.forget(_retval);
return NS_OK;
}
nsresult
GetKeyHelper::DoDatabaseWork(mozIStorageConnection* /* aConnection */)
{
NS_ASSERTION(mKeyRange, "Must have a key range here!");
nsCString indexTable;
if (mIndex->IsUnique()) {
indexTable.AssignLiteral("unique_index_data");
}
else {
indexTable.AssignLiteral("index_data");
}
nsCString keyRangeClause;
mKeyRange->GetBindingClause(NS_LITERAL_CSTRING("value"), keyRangeClause);
NS_ASSERTION(!keyRangeClause.IsEmpty(), "Huh?!");
nsCString query = NS_LITERAL_CSTRING("SELECT object_data_key FROM ") +
indexTable +
NS_LITERAL_CSTRING(" WHERE index_id = :index_id") +
keyRangeClause +
NS_LITERAL_CSTRING(" LIMIT 1");
nsCOMPtr<mozIStorageStatement> stmt = mTransaction->GetCachedStatement(query);
NS_ENSURE_TRUE(stmt, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("index_id"),
mIndex->Id());
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
rv = mKeyRange->BindToStatement(stmt);
NS_ENSURE_SUCCESS(rv, rv);
bool hasResult;
rv = stmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (hasResult) {
rv = mKey.SetFromStatement(stmt, 0);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
nsresult
GetKeyHelper::GetSuccessResult(JSContext* aCx,
jsval* aVal)
{
return mKey.ToJSVal(aCx, aVal);
}
nsresult
GetHelper::DoDatabaseWork(mozIStorageConnection* /* aConnection */)
{
NS_ASSERTION(mKeyRange, "Must have a key range here!");
nsCString indexTable;
if (mIndex->IsUnique()) {
indexTable.AssignLiteral("unique_index_data");
}
else {
indexTable.AssignLiteral("index_data");
}
nsCString keyRangeClause;
mKeyRange->GetBindingClause(NS_LITERAL_CSTRING("value"), keyRangeClause);
NS_ASSERTION(!keyRangeClause.IsEmpty(), "Huh?!");
nsCString query = NS_LITERAL_CSTRING("SELECT data, file_ids FROM object_data "
"INNER JOIN ") + indexTable +
NS_LITERAL_CSTRING(" AS index_table ON object_data.id = ") +
NS_LITERAL_CSTRING("index_table.object_data_id WHERE "
"index_id = :index_id") +
keyRangeClause +
NS_LITERAL_CSTRING(" LIMIT 1");
nsCOMPtr<mozIStorageStatement> stmt = mTransaction->GetCachedStatement(query);
NS_ENSURE_TRUE(stmt, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("index_id"),
mIndex->Id());
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
rv = mKeyRange->BindToStatement(stmt);
NS_ENSURE_SUCCESS(rv, rv);
bool hasResult;
rv = stmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (hasResult) {
rv = IDBObjectStore::GetStructuredCloneReadInfoFromStatement(stmt, 0, 1,
mDatabase->Manager(), mCloneReadInfo);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
nsresult
GetHelper::GetSuccessResult(JSContext* aCx,
jsval* aVal)
{
bool result = IDBObjectStore::DeserializeValue(aCx, mCloneReadInfo, aVal);
mCloneReadInfo.mCloneBuffer.clear();
NS_ENSURE_TRUE(result, NS_ERROR_FAILURE);
return NS_OK;
}
nsresult
GetAllKeysHelper::DoDatabaseWork(mozIStorageConnection* /* aConnection */)
{
nsCString tableName;
if (mIndex->IsUnique()) {
tableName.AssignLiteral("unique_index_data");
}
else {
tableName.AssignLiteral("index_data");
}
nsCString keyRangeClause;
if (mKeyRange) {
mKeyRange->GetBindingClause(NS_LITERAL_CSTRING("value"), keyRangeClause);
}
nsCString limitClause;
if (mLimit != PR_UINT32_MAX) {
limitClause = NS_LITERAL_CSTRING(" LIMIT ");
limitClause.AppendInt(mLimit);
}
nsCString query = NS_LITERAL_CSTRING("SELECT object_data_key FROM ") +
tableName +
NS_LITERAL_CSTRING(" WHERE index_id = :index_id") +
keyRangeClause + limitClause;
nsCOMPtr<mozIStorageStatement> stmt = mTransaction->GetCachedStatement(query);
NS_ENSURE_TRUE(stmt, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("index_id"),
mIndex->Id());
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (mKeyRange) {
rv = mKeyRange->BindToStatement(stmt);
NS_ENSURE_SUCCESS(rv, rv);
}
mKeys.SetCapacity(50);
bool hasResult;
while(NS_SUCCEEDED((rv = stmt->ExecuteStep(&hasResult))) && hasResult) {
if (mKeys.Capacity() == mKeys.Length()) {
mKeys.SetCapacity(mKeys.Capacity() * 2);
}
Key* key = mKeys.AppendElement();
NS_ASSERTION(key, "This shouldn't fail!");
rv = key->SetFromStatement(stmt, 0);
NS_ENSURE_SUCCESS(rv, rv);
}
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
return NS_OK;
}
nsresult
GetAllKeysHelper::GetSuccessResult(JSContext* aCx,
jsval* aVal)
{
NS_ASSERTION(mKeys.Length() <= mLimit, "Too many results!");
nsTArray<Key> keys;
if (!mKeys.SwapElements(keys)) {
NS_ERROR("Failed to swap elements!");
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
JSAutoRequest ar(aCx);
JSObject* array = JS_NewArrayObject(aCx, 0, NULL);
if (!array) {
NS_WARNING("Failed to make array!");
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
if (!keys.IsEmpty()) {
if (!JS_SetArrayLength(aCx, array, jsuint(keys.Length()))) {
NS_WARNING("Failed to set array length!");
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
for (uint32 index = 0, count = keys.Length(); index < count; index++) {
const Key& key = keys[index];
NS_ASSERTION(!key.IsUnset(), "Bad key!");
jsval value;
nsresult rv = key.ToJSVal(aCx, &value);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to get jsval for key!");
return rv;
}
if (!JS_SetElement(aCx, array, index, &value)) {
NS_WARNING("Failed to set array element!");
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
}
}
*aVal = OBJECT_TO_JSVAL(array);
return NS_OK;
}
nsresult
GetAllHelper::DoDatabaseWork(mozIStorageConnection* /* aConnection */)
{
nsCString indexTable;
if (mIndex->IsUnique()) {
indexTable.AssignLiteral("unique_index_data");
}
else {
indexTable.AssignLiteral("index_data");
}
nsCString keyRangeClause;
if (mKeyRange) {
mKeyRange->GetBindingClause(NS_LITERAL_CSTRING("value"), keyRangeClause);
}
nsCString limitClause;
if (mLimit != PR_UINT32_MAX) {
limitClause = NS_LITERAL_CSTRING(" LIMIT ");
limitClause.AppendInt(mLimit);
}
nsCString query = NS_LITERAL_CSTRING("SELECT data, file_ids FROM object_data "
"INNER JOIN ") + indexTable +
NS_LITERAL_CSTRING(" AS index_table ON object_data.id = "
"index_table.object_data_id "
"WHERE index_id = :index_id") +
keyRangeClause + limitClause;
nsCOMPtr<mozIStorageStatement> stmt = mTransaction->GetCachedStatement(query);
NS_ENSURE_TRUE(stmt, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("index_id"),
mIndex->Id());
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (mKeyRange) {
rv = mKeyRange->BindToStatement(stmt);
NS_ENSURE_SUCCESS(rv, rv);
}
mCloneReadInfos.SetCapacity(50);
bool hasResult;
while(NS_SUCCEEDED((rv = stmt->ExecuteStep(&hasResult))) && hasResult) {
if (mCloneReadInfos.Capacity() == mCloneReadInfos.Length()) {
mCloneReadInfos.SetCapacity(mCloneReadInfos.Capacity() * 2);
}
StructuredCloneReadInfo* readInfo = mCloneReadInfos.AppendElement();
NS_ASSERTION(readInfo, "This shouldn't fail!");
rv = IDBObjectStore::GetStructuredCloneReadInfoFromStatement(stmt, 0, 1,
mDatabase->Manager(), *readInfo);
NS_ENSURE_SUCCESS(rv, rv);
}
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
return NS_OK;
}
nsresult
GetAllHelper::GetSuccessResult(JSContext* aCx,
jsval* aVal)
{
NS_ASSERTION(mCloneReadInfos.Length() <= mLimit, "Too many results!");
nsresult rv = ConvertCloneReadInfosToArray(aCx, mCloneReadInfos, aVal);
for (PRUint32 index = 0; index < mCloneReadInfos.Length(); index++) {
mCloneReadInfos[index].mCloneBuffer.clear();
}
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nsresult
OpenKeyCursorHelper::DoDatabaseWork(mozIStorageConnection* aConnection)
{
NS_ASSERTION(aConnection, "Passed a null connection!");
nsCString table;
if (mIndex->IsUnique()) {
table.AssignLiteral("unique_index_data");
}
else {
table.AssignLiteral("index_data");
}
NS_NAMED_LITERAL_CSTRING(value, "value");
nsCString keyRangeClause;
if (mKeyRange) {
mKeyRange->GetBindingClause(value, keyRangeClause);
}
nsCAutoString directionClause(" ORDER BY value ");
switch (mDirection) {
case nsIIDBCursor::NEXT:
case nsIIDBCursor::NEXT_NO_DUPLICATE:
directionClause += NS_LITERAL_CSTRING("ASC, object_data_key ASC");
break;
case nsIIDBCursor::PREV:
directionClause += NS_LITERAL_CSTRING("DESC, object_data_key DESC");
break;
case nsIIDBCursor::PREV_NO_DUPLICATE:
directionClause += NS_LITERAL_CSTRING("DESC, object_data_key ASC");
break;
default:
NS_NOTREACHED("Unknown direction!");
}
nsCString firstQuery = NS_LITERAL_CSTRING("SELECT value, object_data_key "
"FROM ") + table +
NS_LITERAL_CSTRING(" WHERE index_id = :index_id") +
keyRangeClause + directionClause +
NS_LITERAL_CSTRING(" LIMIT 1");
nsCOMPtr<mozIStorageStatement> stmt =
mTransaction->GetCachedStatement(firstQuery);
NS_ENSURE_TRUE(stmt, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("index_id"),
mIndex->Id());
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (mKeyRange) {
rv = mKeyRange->BindToStatement(stmt);
NS_ENSURE_SUCCESS(rv, rv);
}
bool hasResult;
rv = stmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (!hasResult) {
mKey.Unset();
return NS_OK;
}
rv = mKey.SetFromStatement(stmt, 0);
NS_ENSURE_SUCCESS(rv, rv);
rv = mObjectKey.SetFromStatement(stmt, 1);
NS_ENSURE_SUCCESS(rv, rv);
// Now we need to make the query to get the next match.
nsCAutoString queryStart = NS_LITERAL_CSTRING("SELECT value, object_data_key"
" FROM ") + table +
NS_LITERAL_CSTRING(" WHERE index_id = :id");
NS_NAMED_LITERAL_CSTRING(rangeKey, "range_key");
switch (mDirection) {
case nsIIDBCursor::NEXT:
if (mKeyRange && !mKeyRange->Upper().IsUnset()) {
AppendConditionClause(value, rangeKey, true, !mKeyRange->IsUpperOpen(),
queryStart);
mRangeKey = mKeyRange->Upper();
}
mContinueQuery =
queryStart +
NS_LITERAL_CSTRING(" AND value >= :current_key AND "
"( value > :current_key OR "
" object_data_key > :object_key )") +
directionClause +
NS_LITERAL_CSTRING(" LIMIT ");
mContinueToQuery =
queryStart +
NS_LITERAL_CSTRING(" AND value >= :current_key ") +
directionClause +
NS_LITERAL_CSTRING(" LIMIT ");
break;
case nsIIDBCursor::NEXT_NO_DUPLICATE:
if (mKeyRange && !mKeyRange->Upper().IsUnset()) {
AppendConditionClause(value, rangeKey, true, !mKeyRange->IsUpperOpen(),
queryStart);
mRangeKey = mKeyRange->Upper();
}
mContinueQuery =
queryStart + NS_LITERAL_CSTRING(" AND value > :current_key") +
directionClause +
NS_LITERAL_CSTRING(" LIMIT ");
mContinueToQuery =
queryStart + NS_LITERAL_CSTRING(" AND value >= :current_key") +
directionClause +
NS_LITERAL_CSTRING(" LIMIT ");
break;
case nsIIDBCursor::PREV:
if (mKeyRange && !mKeyRange->Lower().IsUnset()) {
AppendConditionClause(value, rangeKey, false, !mKeyRange->IsLowerOpen(),
queryStart);
mRangeKey = mKeyRange->Lower();
}
mContinueQuery =
queryStart +
NS_LITERAL_CSTRING(" AND value <= :current_key AND "
"( value < :current_key OR "
" object_data_key < :object_key )") +
directionClause +
NS_LITERAL_CSTRING(" LIMIT ");
mContinueToQuery =
queryStart +
NS_LITERAL_CSTRING(" AND value <= :current_key ") +
directionClause +
NS_LITERAL_CSTRING(" LIMIT ");
break;
case nsIIDBCursor::PREV_NO_DUPLICATE:
if (mKeyRange && !mKeyRange->Lower().IsUnset()) {
AppendConditionClause(value, rangeKey, false, !mKeyRange->IsLowerOpen(),
queryStart);
mRangeKey = mKeyRange->Lower();
}
mContinueQuery =
queryStart +
NS_LITERAL_CSTRING(" AND value < :current_key") +
directionClause +
NS_LITERAL_CSTRING(" LIMIT ");
mContinueToQuery =
queryStart +
NS_LITERAL_CSTRING(" AND value <= :current_key") +
directionClause +
NS_LITERAL_CSTRING(" LIMIT ");
break;
default:
NS_NOTREACHED("Unknown direction type!");
}
return NS_OK;
}
nsresult
OpenKeyCursorHelper::GetSuccessResult(JSContext* aCx,
jsval* aVal)
{
if (mKey.IsUnset()) {
*aVal = JSVAL_VOID;
return NS_OK;
}
nsRefPtr<IDBCursor> cursor =
IDBCursor::Create(mRequest, mTransaction, mIndex, mDirection, mRangeKey,
mContinueQuery, mContinueToQuery, mKey, mObjectKey);
NS_ENSURE_TRUE(cursor, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
return WrapNative(aCx, cursor, aVal);
}
nsresult
OpenCursorHelper::DoDatabaseWork(mozIStorageConnection* aConnection)
{
NS_ASSERTION(aConnection, "Passed a null connection!");
nsCString indexTable;
if (mIndex->IsUnique()) {
indexTable.AssignLiteral("unique_index_data");
}
else {
indexTable.AssignLiteral("index_data");
}
NS_NAMED_LITERAL_CSTRING(value, "index_table.value");
nsCString keyRangeClause;
if (mKeyRange) {
mKeyRange->GetBindingClause(value, keyRangeClause);
}
nsCAutoString directionClause(" ORDER BY index_table.value ");
switch (mDirection) {
case nsIIDBCursor::NEXT:
case nsIIDBCursor::NEXT_NO_DUPLICATE:
directionClause +=
NS_LITERAL_CSTRING("ASC, index_table.object_data_key ASC");
break;
case nsIIDBCursor::PREV:
directionClause +=
NS_LITERAL_CSTRING("DESC, index_table.object_data_key DESC");
break;
case nsIIDBCursor::PREV_NO_DUPLICATE:
directionClause +=
NS_LITERAL_CSTRING("DESC, index_table.object_data_key ASC");
break;
default:
NS_NOTREACHED("Unknown direction!");
}
nsCString firstQuery =
NS_LITERAL_CSTRING("SELECT index_table.value, "
"index_table.object_data_key, object_data.data, "
"object_data.file_ids FROM ") +
indexTable +
NS_LITERAL_CSTRING(" AS index_table INNER JOIN object_data ON "
"index_table.object_data_id = object_data.id "
"WHERE index_table.index_id = :id") +
keyRangeClause + directionClause +
NS_LITERAL_CSTRING(" LIMIT 1");
nsCOMPtr<mozIStorageStatement> stmt =
mTransaction->GetCachedStatement(firstQuery);
NS_ENSURE_TRUE(stmt, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("id"), mIndex->Id());
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (mKeyRange) {
rv = mKeyRange->BindToStatement(stmt);
NS_ENSURE_SUCCESS(rv, rv);
}
bool hasResult;
rv = stmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (!hasResult) {
mKey.Unset();
return NS_OK;
}
rv = mKey.SetFromStatement(stmt, 0);
NS_ENSURE_SUCCESS(rv, rv);
rv = mObjectKey.SetFromStatement(stmt, 1);
NS_ENSURE_SUCCESS(rv, rv);
rv = IDBObjectStore::GetStructuredCloneReadInfoFromStatement(stmt, 2, 3,
mDatabase->Manager(), mCloneReadInfo);
NS_ENSURE_SUCCESS(rv, rv);
// Now we need to make the query to get the next match.
nsCAutoString queryStart =
NS_LITERAL_CSTRING("SELECT index_table.value, "
"index_table.object_data_key, object_data.data, "
"object_data.file_ids FROM ") +
indexTable +
NS_LITERAL_CSTRING(" AS index_table INNER JOIN object_data ON "
"index_table.object_data_id = object_data.id "
"WHERE index_table.index_id = :id");
NS_NAMED_LITERAL_CSTRING(rangeKey, "range_key");
NS_NAMED_LITERAL_CSTRING(limit, " LIMIT ");
switch (mDirection) {
case nsIIDBCursor::NEXT:
if (mKeyRange && !mKeyRange->Upper().IsUnset()) {
AppendConditionClause(value, rangeKey, true, !mKeyRange->IsUpperOpen(),
queryStart);
mRangeKey = mKeyRange->Upper();
}
mContinueQuery =
queryStart +
NS_LITERAL_CSTRING(" AND index_table.value >= :current_key AND "
"( index_table.value > :current_key OR "
" index_table.object_data_key > :object_key ) ") +
directionClause + limit;
mContinueToQuery =
queryStart +
NS_LITERAL_CSTRING(" AND index_table.value >= :current_key") +
directionClause + limit;
break;
case nsIIDBCursor::NEXT_NO_DUPLICATE:
if (mKeyRange && !mKeyRange->Upper().IsUnset()) {
AppendConditionClause(value, rangeKey, true, !mKeyRange->IsUpperOpen(),
queryStart);
mRangeKey = mKeyRange->Upper();
}
mContinueQuery =
queryStart +
NS_LITERAL_CSTRING(" AND index_table.value > :current_key") +
directionClause + limit;
mContinueToQuery =
queryStart +
NS_LITERAL_CSTRING(" AND index_table.value >= :current_key") +
directionClause + limit;
break;
case nsIIDBCursor::PREV:
if (mKeyRange && !mKeyRange->Lower().IsUnset()) {
AppendConditionClause(value, rangeKey, false, !mKeyRange->IsLowerOpen(),
queryStart);
mRangeKey = mKeyRange->Lower();
}
mContinueQuery =
queryStart +
NS_LITERAL_CSTRING(" AND index_table.value <= :current_key AND "
"( index_table.value < :current_key OR "
" index_table.object_data_key < :object_key ) ") +
directionClause + limit;
mContinueToQuery =
queryStart +
NS_LITERAL_CSTRING(" AND index_table.value <= :current_key") +
directionClause + limit;
break;
case nsIIDBCursor::PREV_NO_DUPLICATE:
if (mKeyRange && !mKeyRange->Lower().IsUnset()) {
AppendConditionClause(value, rangeKey, false, !mKeyRange->IsLowerOpen(),
queryStart);
mRangeKey = mKeyRange->Lower();
}
mContinueQuery =
queryStart +
NS_LITERAL_CSTRING(" AND index_table.value < :current_key") +
directionClause + limit;
mContinueToQuery =
queryStart +
NS_LITERAL_CSTRING(" AND index_table.value <= :current_key") +
directionClause + limit;
break;
default:
NS_NOTREACHED("Unknown direction type!");
}
return NS_OK;
}
nsresult
OpenCursorHelper::GetSuccessResult(JSContext* aCx,
jsval* aVal)
{
if (mKey.IsUnset()) {
*aVal = JSVAL_VOID;
return NS_OK;
}
nsRefPtr<IDBCursor> cursor =
IDBCursor::Create(mRequest, mTransaction, mIndex, mDirection, mRangeKey,
mContinueQuery, mContinueToQuery, mKey, mObjectKey,
mCloneReadInfo);
NS_ENSURE_TRUE(cursor, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
NS_ASSERTION(!mCloneReadInfo.mCloneBuffer.data(), "Should have swapped!");
return WrapNative(aCx, cursor, aVal);
}
nsresult
CountHelper::DoDatabaseWork(mozIStorageConnection* aConnection)
{
nsCString table;
if (mIndex->IsUnique()) {
table.AssignLiteral("unique_index_data");
}
else {
table.AssignLiteral("index_data");
}
NS_NAMED_LITERAL_CSTRING(lowerKeyName, "lower_key");
NS_NAMED_LITERAL_CSTRING(upperKeyName, "upper_key");
NS_NAMED_LITERAL_CSTRING(value, "value");
nsCAutoString keyRangeClause;
if (mKeyRange) {
if (!mKeyRange->Lower().IsUnset()) {
AppendConditionClause(value, lowerKeyName, false,
!mKeyRange->IsLowerOpen(), keyRangeClause);
}
if (!mKeyRange->Upper().IsUnset()) {
AppendConditionClause(value, upperKeyName, true,
!mKeyRange->IsUpperOpen(), keyRangeClause);
}
}
nsCString query = NS_LITERAL_CSTRING("SELECT count(*) FROM ") + table +
NS_LITERAL_CSTRING(" WHERE index_id = :id") +
keyRangeClause;
nsCOMPtr<mozIStorageStatement> stmt = mTransaction->GetCachedStatement(query);
NS_ENSURE_TRUE(stmt, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("id"), mIndex->Id());
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (mKeyRange) {
if (!mKeyRange->Lower().IsUnset()) {
rv = mKeyRange->Lower().BindToStatement(stmt, lowerKeyName);
NS_ENSURE_SUCCESS(rv, rv);
}
if (!mKeyRange->Upper().IsUnset()) {
rv = mKeyRange->Upper().BindToStatement(stmt, upperKeyName);
NS_ENSURE_SUCCESS(rv, rv);
}
}
bool hasResult;
rv = stmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
NS_ENSURE_TRUE(hasResult, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mCount = stmt->AsInt64(0);
return NS_OK;
}
nsresult
CountHelper::GetSuccessResult(JSContext* aCx,
jsval* aVal)
{
return JS_NewNumberValue(aCx, static_cast<jsdouble>(mCount), aVal);
}
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку