C++ (Cpp) IDBDatabase::setMetadata示例

void IDBOpenDBRequest::onUpgradeNeeded(int64_t oldVersion, PassOwnPtr<WebIDBDatabase> backend, const IDBDatabaseMetadata& metadata, WebIDBDataLoss dataLoss, String dataLossMessage)
{
    IDB_TRACE("IDBOpenDBRequest::onUpgradeNeeded()");
    if (m_contextStopped || !executionContext()) {
        OwnPtr<WebIDBDatabase> db = backend;
        db->abort(m_transactionId);
        db->close();
        return;
    }
    if (!shouldEnqueueEvent())
        return;

    ASSERT(m_databaseCallbacks);

    IDBDatabase* idbDatabase = IDBDatabase::create(executionContext(), backend, m_databaseCallbacks.release());
    idbDatabase->setMetadata(metadata);

    if (oldVersion == IDBDatabaseMetadata::NoIntVersion) {
        // This database hasn't had an integer version before.
        oldVersion = IDBDatabaseMetadata::DefaultIntVersion;
    }
    IDBDatabaseMetadata oldMetadata(metadata);
    oldMetadata.intVersion = oldVersion;

    m_transaction = IDBTransaction::create(scriptState(), m_transactionId, idbDatabase, this, oldMetadata);
    setResult(IDBAny::create(idbDatabase));

    if (m_version == IDBDatabaseMetadata::NoIntVersion)
        m_version = 1;
    enqueueEvent(IDBVersionChangeEvent::create(EventTypeNames::upgradeneeded, oldVersion, m_version, dataLoss, dataLossMessage));
}

示例#2

显示文件

文件： IDBOpenDBRequest.cpp 项目： kingysu/blink-crosswalk

void IDBOpenDBRequest::onSuccess(PassOwnPtr<WebIDBDatabase> backend, const IDBDatabaseMetadata& metadata)
{
    IDB_TRACE("IDBOpenDBRequest::onSuccess()");
    if (m_contextStopped || !executionContext()) {
        OwnPtr<WebIDBDatabase> db = backend;
        if (db)
            db->close();
        return;
    }
    if (!shouldEnqueueEvent())
        return;

    IDBDatabase* idbDatabase = nullptr;
    if (resultAsAny()) {
        // Previous onUpgradeNeeded call delivered the backend.
        ASSERT(!backend.get());
        idbDatabase = resultAsAny()->idbDatabase();
        ASSERT(idbDatabase);
        ASSERT(!m_databaseCallbacks);
    } else {
        ASSERT(backend.get());
        ASSERT(m_databaseCallbacks);
        idbDatabase = IDBDatabase::create(executionContext(), backend, m_databaseCallbacks.release());
        setResult(IDBAny::create(idbDatabase));
    }
    idbDatabase->setMetadata(metadata);
    enqueueEvent(Event::create(EventTypeNames::success));
}