Source/WebCore/Modules/webdatabase/ChangeVersionWrapper.cpp

/*
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#include "config.h"
#include "ChangeVersionWrapper.h"

#include "Database.h"
#include "SQLError.h"
#include "SQLTransactionBackend.h"
#include <wtf/RefPtr.h>

namespace WebCore {

ChangeVersionWrapper::ChangeVersionWrapper(String&& oldVersion, String&& newVersion)
    : m_oldVersion(WTFMove(oldVersion).isolatedCopy())
    , m_newVersion(WTFMove(newVersion).isolatedCopy())
{
}

bool ChangeVersionWrapper::performPreflight(SQLTransaction& transaction)
{
    Database& database = transaction.database();

    String actualVersion;
    if (!database.getVersionFromDatabase(actualVersion)) {
        int sqliteError = database.sqliteDatabase().lastError();
        m_sqlError = SQLError::create(SQLError::UNKNOWN_ERR, "unable to read the current version", sqliteError, database.sqliteDatabase().lastErrorMsg());
        return false;
    }

    if (actualVersion != m_oldVersion) {
        m_sqlError = SQLError::create(SQLError::VERSION_ERR, "current version of the database and `oldVersion` argument do not match"_s);
        return false;
    }

    return true;
}

bool ChangeVersionWrapper::performPostflight(SQLTransaction& transaction)
{
    Database& database = transaction.database();

    if (!database.setVersionInDatabase(m_newVersion)) {
        int sqliteError = database.sqliteDatabase().lastError();
        m_sqlError = SQLError::create(SQLError::UNKNOWN_ERR, "unable to set new version in database", sqliteError, database.sqliteDatabase().lastErrorMsg());
        return false;
    }

    database.setExpectedVersion(m_newVersion);
    return true;
}

void ChangeVersionWrapper::handleCommitFailedAfterPostflight(SQLTransaction& transaction)
{
    transaction.database().setCachedVersion(m_oldVersion);
}

} // namespace WebCore