public void TestStoreModifiedExceptionThrown()
{
ulong pageId;
IPage page;
byte[] buffer1 = new byte[] { 1, 1, 1, 1 };
byte[] buffer2 = new byte[] { 2, 2, 2, 2 };
using (
var pageStore = TestUtils.CreateEmptyPageStore("TestStoreModifiedExceptionThrown.data",
PersistenceType.Rewrite))
{
page = pageStore.Create(2);
pageId = page.Id;
page.SetData(buffer1, 0, 0, 4);
pageStore.MarkDirty(2, pageId);
pageStore.Commit(2, null);
}
using (
var readStore = new BinaryFilePageStore(TestUtils.PersistenceManager,
"TestStoreModifiedExceptionThrown.data",
BPlusTreeStoreManager.PageSize, true, 2, 3))
{
using (
var writeStore = new BinaryFilePageStore(TestUtils.PersistenceManager,
"TestStoreModifiedExceptionThrown.data",
BPlusTreeStoreManager.PageSize, false, 2, 3))
{
var writePage = writeStore.Retrieve(pageId, null);
Assert.IsFalse(writeStore.IsWriteable(writePage));
writePage = writeStore.GetWriteablePage(3, writePage);
writePage.SetData(buffer2, 0, 0, 4);
writeStore.MarkDirty(3, pageId);
writeStore.Commit(3, null);
}
using (
var writeStore = new BinaryFilePageStore(TestUtils.PersistenceManager,
"TestStoreModifiedExceptionThrown.data",
BPlusTreeStoreManager.PageSize, false, 3, 4))
{
var writePage = writeStore.Retrieve(pageId, null);
writePage = writeStore.GetWriteablePage(4, writePage);
writePage.SetData(buffer2, 0, 0, 4);
writeStore.MarkDirty(4, pageId);
writeStore.Commit(4, null);
}
page = readStore.Retrieve(1, null);
Assert.AreEqual(1, page.Data[0]);
// We should not reach this assert because the ReadWriteStoreModifiedException should get thrown
}
}
public void TestCreateAndUpdatePage()
{
using (var pageStore = CreateEmptyPageStore("TestCreateAndUpdatePage.dat"))
{
var newPage = pageStore.Create(1);
newPage = pageStore.GetWriteablePage(1, newPage);
newPage.SetData(_testBuffer1);
pageStore.Commit(1, null);
Assert.AreEqual(1ul, newPage.Id);
}
using (var fs = new FileStream("TestCreateAndUpdatePage.dat", FileMode.Open, FileAccess.Read))
{
Assert.AreEqual(8192L, fs.Length);
}
using (var fs = new FileStream("TestCreateAndUpdatePage.dat", FileMode.Open, FileAccess.Read))
{
Assert.AreEqual(8192L, fs.Length);
}
using (var pageStore = new BinaryFilePageStore(_pm, "TestCreateAndUpdatePage.dat", 4096, false, 1, 2, false))
{
var page = pageStore.Retrieve(1ul, null);
Assert.IsFalse(pageStore.IsWriteable(page));
try
{
page.SetData(_testBuffer2);
Assert.Fail("Expected an InvalidOperationException when attempting to write to a non-writeable page");
}
catch (InvalidOperationException)
{
// Expected
}
page = pageStore.GetWriteablePage(2, page);
Assert.IsTrue(pageStore.IsWriteable(page));
Assert.AreEqual(0, _testBuffer1.Compare(page.Data));
page.SetData(_testBuffer2);
pageStore.MarkDirty(2, 1ul);
pageStore.Commit(2, null);
}
using (var pageStore = new BinaryFilePageStore(_pm, "TestCreateAndUpdatePage.dat", 4096, true, 2, 3, false))
{
var page = pageStore.Retrieve(1ul, null);
Assert.AreEqual(0, _testBuffer2.Compare(page.Data));
}
}
public void TestReopenAfterReadWriteStoreModifiedException()
{
ulong pageId;
var buffer1 = new byte[] { 1, 1, 1, 1 };
var buffer2 = new byte[] { 2, 2, 2, 2 };
var buffer3 = new byte[] { 3, 3, 3, 3 };
using (
var pageStore = TestUtils.CreateEmptyPageStore("TestStoreModifiedExceptionThrown.data",
PersistenceType.Rewrite))
{
var page = pageStore.Create(1);
pageId = page.Id;
page.SetData(buffer1, 0, 0, 4);
pageStore.MarkDirty(2, pageId);
pageStore.Commit(2, null);
}
var readStore = new BinaryFilePageStore(TestUtils.PersistenceManager,
"TestStoreModifiedExceptionThrown.data",
BPlusTreeStoreManager.PageSize, true, 2, 3);
try
{
using (
var writeStore = new BinaryFilePageStore(TestUtils.PersistenceManager,
"TestStoreModifiedExceptionThrown.data",
BPlusTreeStoreManager.PageSize, false, 2, 3))
{
var writePage = writeStore.Retrieve(pageId, null);
writePage = writeStore.GetWriteablePage(3, writePage);
writePage.SetData(buffer2, 0, 0, 4);
writeStore.MarkDirty(3, pageId);
writeStore.Commit(3, null);
}
//var page = readStore.Retrieve(pageId, null);
//Assert.AreEqual(1, page.Data[0]);
using (
var writeStore = new BinaryFilePageStore(TestUtils.PersistenceManager,
"TestStoreModifiedExceptionThrown.data",
BPlusTreeStoreManager.PageSize, false, 3, 4))
{
var writePage = writeStore.Retrieve(pageId, null);
writePage = writeStore.GetWriteablePage(4, writePage);
writePage.SetData(buffer3, 0, 0, 4);
writeStore.MarkDirty(4, pageId);
writeStore.Commit(4, null);
}
try
{
readStore.Retrieve(pageId, null);
Assert.Fail("Expected ReadWriteStoreModifiedException to be thrown");
}
catch (ReadWriteStoreModifiedException)
{
readStore.Close();
readStore.Dispose();
readStore = null;
readStore = new BinaryFilePageStore(TestUtils.PersistenceManager,
"TestStoreModifiedExceptionThrown.data",
BPlusTreeStoreManager.PageSize, true, 4, 5);
var page = readStore.Retrieve(pageId, null);
Assert.AreEqual(3, page.Data[0]);
}
}
finally
{
if (readStore != null)
{
readStore.Dispose();
}
}
}