Mypal/dom/cache/Connection.cpp

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "mozilla/dom/cache/Connection.h"

#include "mozilla/dom/cache/DBSchema.h"
#include "mozStorageHelper.h"

namespace mozilla {
namespace dom {
namespace cache {

using mozilla::dom::quota::QuotaObject;

NS_IMPL_ISUPPORTS(cache::Connection, mozIStorageAsyncConnection,
                                     mozIStorageConnection);

Connection::Connection(mozIStorageConnection* aBase)
  : mBase(aBase)
  , mClosed(false)
{
  MOZ_DIAGNOSTIC_ASSERT(mBase);
}

Connection::~Connection()
{
  NS_ASSERT_OWNINGTHREAD(Connection);
  MOZ_ALWAYS_SUCCEEDS(Close());
}

NS_IMETHODIMP
Connection::Close()
{
  NS_ASSERT_OWNINGTHREAD(Connection);

  if (mClosed) {
    return NS_OK;
  }
  mClosed = true;

  // If we are closing here, then Cache must not have a transaction
  // open anywhere else.  This should be guaranteed to succeed.
  MOZ_ALWAYS_SUCCEEDS(db::IncrementalVacuum(this));

  return mBase->Close();
}

// The following methods are all boilerplate that either forward to the
// base connection or block the method.  All the async execution methods
// are blocked because Cache does not use them and they would require more
// work to wrap properly.

// mozIStorageAsyncConnection methods

NS_IMETHODIMP
Connection::AsyncClose(mozIStorageCompletionCallback*)
{
  // async methods are not supported
  return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP
Connection::AsyncClone(bool, mozIStorageCompletionCallback*)
{
  // async methods are not supported
  return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP
Connection::GetDatabaseFile(nsIFile** aFileOut)
{
  return mBase->GetDatabaseFile(aFileOut);
}

NS_IMETHODIMP
Connection::CreateAsyncStatement(const nsACString&, mozIStorageAsyncStatement**)
{
  // async methods are not supported
  return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP
Connection::ExecuteAsync(mozIStorageBaseStatement**, uint32_t,
                         mozIStorageStatementCallback*,
                         mozIStoragePendingStatement**)
{
  // async methods are not supported
  return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP
Connection::ExecuteSimpleSQLAsync(const nsACString&,
                                  mozIStorageStatementCallback*,
                                  mozIStoragePendingStatement**)
{
  // async methods are not supported
  return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP
Connection::CreateFunction(const nsACString& aFunctionName,
                           int32_t aNumArguments,
                           mozIStorageFunction* aFunction)
{
  // async methods are not supported
  return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP
Connection::CreateAggregateFunction(const nsACString& aFunctionName,
                                    int32_t aNumArguments,
                                    mozIStorageAggregateFunction* aFunction)
{
  return mBase->CreateAggregateFunction(aFunctionName, aNumArguments,
                                        aFunction);
}

NS_IMETHODIMP
Connection::RemoveFunction(const nsACString& aFunctionName)
{
  return mBase->RemoveFunction(aFunctionName);
}

NS_IMETHODIMP
Connection::SetProgressHandler(int32_t aGranularity,
                               mozIStorageProgressHandler* aHandler,
                               mozIStorageProgressHandler** aHandlerOut)
{
  return mBase->SetProgressHandler(aGranularity, aHandler, aHandlerOut);
}

NS_IMETHODIMP
Connection::RemoveProgressHandler(mozIStorageProgressHandler** aHandlerOut)
{
  return mBase->RemoveProgressHandler(aHandlerOut);
}

// mozIStorageConnection methods

NS_IMETHODIMP
Connection::Clone(bool aReadOnly, mozIStorageConnection** aConnectionOut)
{
  nsCOMPtr<mozIStorageConnection> conn;
  nsresult rv = mBase->Clone(aReadOnly, getter_AddRefs(conn));
  if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }

  nsCOMPtr<mozIStorageConnection> wrapped = new Connection(conn);
  wrapped.forget(aConnectionOut);

  return rv;
}

NS_IMETHODIMP
Connection::GetDefaultPageSize(int32_t* aSizeOut)
{
  return mBase->GetDefaultPageSize(aSizeOut);
}

NS_IMETHODIMP
Connection::GetConnectionReady(bool* aReadyOut)
{
  return mBase->GetConnectionReady(aReadyOut);
}

NS_IMETHODIMP
Connection::GetLastInsertRowID(int64_t* aRowIdOut)
{
  return mBase->GetLastInsertRowID(aRowIdOut);
}

NS_IMETHODIMP
Connection::GetAffectedRows(int32_t* aCountOut)
{
  return mBase->GetAffectedRows(aCountOut);
}

NS_IMETHODIMP
Connection::GetLastError(int32_t* aErrorOut)
{
  return mBase->GetLastError(aErrorOut);
}

NS_IMETHODIMP
Connection::GetLastErrorString(nsACString& aErrorOut)
{
  return mBase->GetLastErrorString(aErrorOut);
}

NS_IMETHODIMP
Connection::GetSchemaVersion(int32_t* aVersionOut)
{
  return mBase->GetSchemaVersion(aVersionOut);
}

NS_IMETHODIMP
Connection::SetSchemaVersion(int32_t aVersion)
{
  return mBase->SetSchemaVersion(aVersion);
}

NS_IMETHODIMP
Connection::CreateStatement(const nsACString& aQuery,
                            mozIStorageStatement** aStatementOut)
{
  return mBase->CreateStatement(aQuery, aStatementOut);
}

NS_IMETHODIMP
Connection::ExecuteSimpleSQL(const nsACString& aQuery)
{
  return mBase->ExecuteSimpleSQL(aQuery);
}

NS_IMETHODIMP
Connection::TableExists(const nsACString& aTableName, bool* aExistsOut)
{
  return mBase->TableExists(aTableName, aExistsOut);
}

NS_IMETHODIMP
Connection::IndexExists(const nsACString& aIndexName, bool* aExistsOut)
{
  return mBase->IndexExists(aIndexName, aExistsOut);
}

NS_IMETHODIMP
Connection::GetTransactionInProgress(bool* aResultOut)
{
  return mBase->GetTransactionInProgress(aResultOut);
}

NS_IMETHODIMP
Connection::BeginTransaction()
{
  return mBase->BeginTransaction();
}

NS_IMETHODIMP
Connection::BeginTransactionAs(int32_t aType)
{
  return mBase->BeginTransactionAs(aType);
}

NS_IMETHODIMP
Connection::CommitTransaction()
{
  return mBase->CommitTransaction();
}

NS_IMETHODIMP
Connection::RollbackTransaction()
{
  return mBase->RollbackTransaction();
}

NS_IMETHODIMP
Connection::CreateTable(const char* aTable, const char* aSchema)
{
  return mBase->CreateTable(aTable, aSchema);
}

NS_IMETHODIMP
Connection::SetGrowthIncrement(int32_t aIncrement, const nsACString& aDatabase)
{
  return mBase->SetGrowthIncrement(aIncrement, aDatabase);
}

NS_IMETHODIMP
Connection::EnableModule(const nsACString& aModule)
{
  return mBase->EnableModule(aModule);
}

NS_IMETHODIMP
Connection::GetQuotaObjects(QuotaObject** aDatabaseQuotaObject,
                            QuotaObject** aJournalQuotaObject)
{
  return mBase->GetQuotaObjects(aDatabaseQuotaObject, aJournalQuotaObject);
}

} // namespace cache
} // namespace dom
} // namespace mozilla