protected virtual void Init() { // add header page IPage headingPage = PageManager.CreatePage(); Debug.Assert(headingPage.Index == 0, "The header page should have zero index"); var hph = new HeadingPageHeader { FsmPageIndex = 1, AccessMethodPageIndex = 2, PageSize = PageManager.PageSize, OnDiskStructureVersion = OnDiskStructureVersion, AccessMethod = (short)AccessMethod }; PageFormatter.InitPage(headingPage, hph); PageManager.UpdatePage(headingPage); // add the first free-space-map page IPage fsmPage = PageManager.CreatePage(); Debug.Assert(fsmPage.Index == 1, "The first free-space-map page should have index 1"); var fsmh = new FreeSpaceMapPageHeader { StartPageIndex = fsmPage.Index, PreviousPageIndex = -1, NextPageIndex = -1, BasePageIndex = 0 }; PageFormatter.InitPage(fsmPage, fsmh); PageFormatter.SetAllFsmValues(fsmPage, FsmValue.Full); PageManager.UpdatePage(fsmPage); }
public void CorrectWriteAndReadAllHeaders() { int pageSize = 4096; var dummyPageManager = new FileSystemPageManager(pageSize); var p = new Page(dummyPageManager, 0, new byte[pageSize]); var hph = new HeadingPageHeader(); PageFormatter.InitPage(p, hph); PageHeaderBase phb = PageFormatter.GetPageHeader(p); Assert.IsInstanceOf <HeadingPageHeader>(phb); Assert.AreEqual(hph.Length, phb.Length); Assert.AreEqual(hph.PageType, phb.PageType); Assert.AreEqual(hph.SizeRange, phb.SizeRange); var fsiph = new FixedSizeItemsPageHeader(); PageFormatter.InitPage(p, fsiph); phb = PageFormatter.GetPageHeader(p); Assert.IsInstanceOf <FixedSizeItemsPageHeader>(phb); Assert.AreEqual(fsiph.Length, phb.Length); Assert.AreEqual(fsiph.PageType, phb.PageType); Assert.AreEqual(fsiph.SizeRange, phb.SizeRange); var mpph = new MultipageItemPageHeader(); PageFormatter.InitPage(p, mpph); phb = PageFormatter.GetPageHeader(p); Assert.IsInstanceOf <MultipageItemPageHeader>(phb); Assert.AreEqual(mpph.Length, phb.Length); Assert.AreEqual(mpph.PageType, phb.PageType); Assert.AreEqual(mpph.SizeRange, phb.SizeRange); Assert.AreEqual(mpph.StartPageIndex, ((MultipageItemPageHeader)phb).StartPageIndex); Assert.AreEqual(mpph.PreviousPageIndex, ((MultipageItemPageHeader)phb).PreviousPageIndex); Assert.AreEqual(mpph.NextPageIndex, ((MultipageItemPageHeader)phb).NextPageIndex); var fsmph = new FreeSpaceMapPageHeader(); PageFormatter.InitPage(p, fsmph); phb = PageFormatter.GetPageHeader(p); Assert.IsInstanceOf <FreeSpaceMapPageHeader>(phb); Assert.AreEqual(fsmph.Length, phb.Length); Assert.AreEqual(fsmph.PageType, phb.PageType); Assert.AreEqual(fsmph.SizeRange, phb.SizeRange); Assert.AreEqual(fsmph.BasePageIndex, ((FreeSpaceMapPageHeader)phb).BasePageIndex); var tnph = new BPlusTreeNodePageHeader(); PageFormatter.InitPage(p, tnph); phb = PageFormatter.GetPageHeader(p); Assert.IsInstanceOf <BPlusTreeNodePageHeader>(phb); Assert.AreEqual(tnph.Length, phb.Length); Assert.AreEqual(tnph.PageType, phb.PageType); Assert.AreEqual(tnph.SizeRange, phb.SizeRange); Assert.AreEqual(tnph.ParentPageIndex, ((BPlusTreeNodePageHeader)phb).ParentPageIndex); Assert.AreEqual(tnph.PreviousPageIndex, ((BPlusTreeNodePageHeader)phb).PreviousPageIndex); Assert.AreEqual(tnph.NextPageIndex, ((BPlusTreeNodePageHeader)phb).NextPageIndex); var rtnph = new RadixTreeNodesPageHeader(); PageFormatter.InitPage(p, rtnph); phb = PageFormatter.GetPageHeader(p); Assert.IsInstanceOf <RadixTreeNodesPageHeader>(phb); Assert.AreEqual(rtnph.Length, phb.Length); Assert.AreEqual(rtnph.PageType, phb.PageType); Assert.AreEqual(rtnph.SizeRange, phb.SizeRange); Assert.AreEqual(rtnph.FreeSpace, ((RadixTreeNodesPageHeader)phb).FreeSpace); }