| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| #ifndef _STORE_STORCACH_HXX |
| #define _STORE_STORCACH_HXX "$Revision: 1.6.8.2 $" |
| |
| #include "sal/types.h" |
| #include "rtl/ref.hxx" |
| |
| #include "store/types.h" |
| #include "storbase.hxx" |
| |
| namespace store |
| { |
| |
| /*======================================================================== |
| * |
| * PageCache interface. |
| * |
| *======================================================================*/ |
| |
| class PageCache : public rtl::IReference |
| { |
| public: |
| /** load. |
| */ |
| storeError lookupPageAt ( |
| PageHolder & rxPage, |
| sal_uInt32 nOffset); |
| |
| /** insert. |
| */ |
| storeError insertPageAt ( |
| PageHolder const & rxPage, |
| sal_uInt32 nOffset); |
| |
| /** update, or insert. |
| */ |
| storeError updatePageAt ( |
| PageHolder const & rxPage, |
| sal_uInt32 nOffset); |
| |
| /** remove (invalidate). |
| */ |
| storeError removePageAt ( |
| sal_uInt32 nOffset); |
| |
| private: |
| /** Implementation (abstract). |
| */ |
| virtual storeError lookupPageAt_Impl ( |
| PageHolder & rxPage, |
| sal_uInt32 nOffset) = 0; |
| |
| virtual storeError insertPageAt_Impl ( |
| PageHolder const & rxPage, |
| sal_uInt32 nOffset) = 0; |
| |
| virtual storeError updatePageAt_Impl ( |
| PageHolder const & rxPage, |
| sal_uInt32 nOffset) = 0; |
| |
| virtual storeError removePageAt_Impl ( |
| sal_uInt32 nOffset) = 0; |
| }; |
| |
| /*======================================================================== |
| * |
| * PageCache factory. |
| * |
| *======================================================================*/ |
| |
| storeError |
| PageCache_createInstance ( |
| rtl::Reference< store::PageCache > & rxCache, |
| sal_uInt16 nPageSize |
| ); |
| |
| /*======================================================================== |
| * |
| * The End. |
| * |
| *======================================================================*/ |
| |
| } // namespace store |
| |
| #endif /* !_STORE_STORCACH_HXX */ |
| |