//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test void pageModificationTracksHighestModifierTransactionId() throws java.io.IOException
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void PageModificationTracksHighestModifierTransactionId()
{
TestVersionContext cursorContext = new TestVersionContext(() => 0);
VersionContextSupplier versionContextSupplier = new ConfiguredVersionContextSupplier(cursorContext);
using (MuninnPageCache pageCache = createPageCache(fs, 2, PageCacheTracer.NULL, Org.Neo4j.Io.pagecache.tracing.cursor.PageCursorTracerSupplier_Fields.Null, versionContextSupplier), PagedFile pagedFile = map(pageCache, file("a"), 8))
{
cursorContext.InitWrite(1);
using (PageCursor cursor = pagedFile.Io(0, PF_SHARED_WRITE_LOCK))
{
assertTrue(cursor.Next());
cursor.PutLong(1);
}
cursorContext.InitWrite(12);
using (PageCursor cursor = pagedFile.Io(0, PF_SHARED_WRITE_LOCK))
{
assertTrue(cursor.Next());
cursor.PutLong(2);
}
cursorContext.InitWrite(7);
using (PageCursor cursor = pagedFile.Io(0, PF_SHARED_WRITE_LOCK))
{
assertTrue(cursor.Next());
cursor.PutLong(3);
}
using (PageCursor cursor = pagedFile.Io(0, PF_SHARED_READ_LOCK))
{
assertTrue(cursor.Next());
MuninnPageCursor pageCursor = ( MuninnPageCursor )cursor;
assertEquals(12, pageCursor.PagedFile.getLastModifiedTxId(pageCursor.PinnedPageRef));
assertEquals(3, cursor.Long);
}
}
}
private void ClearCursorError(MuninnPageCursor cursor)
{
while (cursor != null)
{
cursor._cursorException = null;
cursor = cursor.LinkedCursor;
}
}
private void CloseLinks(MuninnPageCursor cursor)
{
while (cursor != null && cursor.PagedFile != null)
{
cursor.UnpinCurrentPage();
// We null out the pagedFile field to allow it and its (potentially big) translation table to be garbage
// collected when the file is unmapped, since the cursors can stick around in thread local caches, etc.
cursor.PagedFile = null;
cursor = cursor.LinkedCursor;
}
}
public override bool CheckAndClearBoundsFlag()
{
MuninnPageCursor cursor = this;
bool result = false;
do
{
result |= cursor._outOfBounds;
cursor._outOfBounds = false;
cursor = cursor.LinkedCursor;
} while (cursor != null);
return(result);
}
public override int CopyTo(int sourceOffset, PageCursor targetCursor, int targetOffset, int lengthInBytes)
{
int sourcePageSize = CurrentPageSize;
int targetPageSize = targetCursor.CurrentPageSize;
if (targetCursor.GetType() != typeof(MuninnWritePageCursor))
{
throw new System.ArgumentException("Target cursor must be writable");
}
if (sourceOffset >= 0 & targetOffset >= 0 & sourceOffset < sourcePageSize & targetOffset < targetPageSize & lengthInBytes >= 0)
{
MuninnPageCursor cursor = ( MuninnPageCursor )targetCursor;
int remainingSource = sourcePageSize - sourceOffset;
int remainingTarget = targetPageSize - targetOffset;
int bytes = Math.Min(lengthInBytes, Math.Min(remainingSource, remainingTarget));
UnsafeUtil.copyMemory(_pointer + sourceOffset, cursor._pointer + targetOffset, bytes);
return(bytes);
}
_outOfBounds = true;
return(0);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test void markCursorContextDirtyWhenRepositionCursorOnItsCurrentPage() throws java.io.IOException
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void MarkCursorContextDirtyWhenRepositionCursorOnItsCurrentPage()
{
TestVersionContext cursorContext = new TestVersionContext(() => 3);
VersionContextSupplier versionContextSupplier = new ConfiguredVersionContextSupplier(cursorContext);
using (MuninnPageCache pageCache = createPageCache(fs, 2, PageCacheTracer.NULL, Org.Neo4j.Io.pagecache.tracing.cursor.PageCursorTracerSupplier_Fields.Null, versionContextSupplier), PagedFile pagedFile = map(pageCache, file("a"), 8))
{
cursorContext.InitRead();
using (PageCursor cursor = pagedFile.Io(0, PF_SHARED_WRITE_LOCK))
{
assertTrue(cursor.Next(0));
assertFalse(cursorContext.Dirty);
MuninnPageCursor pageCursor = ( MuninnPageCursor )cursor;
pageCursor.PagedFile.setLastModifiedTxId((( MuninnPageCursor )cursor).PinnedPageRef, 17);
assertTrue(cursor.Next(0));
assertTrue(cursorContext.Dirty);
}
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public void checkAndClearCursorException() throws org.neo4j.io.pagecache.CursorException
public override void CheckAndClearCursorException()
{
MuninnPageCursor cursor = this;
do
{
object error = cursor._cursorException;
if (error != null)
{
ClearCursorError(cursor);
if (_usePreciseCursorErrorStackTraces)
{
throw ( CursorExceptionWithPreciseStackTrace )error;
}
else
{
throw new CursorException(( string )error);
}
}
cursor = cursor.LinkedCursor;
} while (cursor != null);
}
public override PageCursor OpenLinkedCursor(long pageId)
{
CloseLinkedCursorIfAny();
MuninnPagedFile pf = PagedFile;
if (pf == null)
{
// This cursor has been closed
throw new System.InvalidOperationException("Cannot open linked cursor on closed page cursor");
}
if (LinkedCursor != null)
{
LinkedCursor.initialise(pf, pageId, PfFlags);
LinkedCursor.rewind();
}
else
{
LinkedCursor = ( MuninnPageCursor )pf.Io(pageId, PfFlags);
LinkedCursor.isLinkedCursor = true;
}
return(LinkedCursor);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test void pageModificationTrackingNoticeWriteFromAnotherThread() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void PageModificationTrackingNoticeWriteFromAnotherThread()
{
TestVersionContext cursorContext = new TestVersionContext(() => 0);
VersionContextSupplier versionContextSupplier = new ConfiguredVersionContextSupplier(cursorContext);
using (MuninnPageCache pageCache = createPageCache(fs, 2, PageCacheTracer.NULL, Org.Neo4j.Io.pagecache.tracing.cursor.PageCursorTracerSupplier_Fields.Null, versionContextSupplier), PagedFile pagedFile = map(pageCache, file("a"), 8))
{
cursorContext.InitWrite(7);
//JAVA TO C# CONVERTER WARNING: Java wildcard generics have no direct equivalent in .NET:
//ORIGINAL LINE: java.util.concurrent.Future<?> future = executor.submit(() ->
Future <object> future = executor.submit(() =>
{
try
{
using (PageCursor cursor = pagedFile.Io(0, PF_SHARED_WRITE_LOCK))
{
assertTrue(cursor.Next());
cursor.PutLong(1);
}
}
catch (IOException e)
{
throw new Exception(e);
}
});
future.get();
using (PageCursor cursor = pagedFile.Io(0, PF_SHARED_READ_LOCK))
{
assertTrue(cursor.Next());
MuninnPageCursor pageCursor = ( MuninnPageCursor )cursor;
assertEquals(7, pageCursor.PagedFile.getLastModifiedTxId(pageCursor.PinnedPageRef));
assertEquals(1, cursor.Long);
}
}
}
internal CursorPageAccessor(MuninnPageCursor @delegate) : base(-1, PageCursorTracer.NULL, EmptyVersionContextSupplier.EMPTY)
{
this.Delegate = @delegate;
}