/// <summary>
/// Let the passed in {@code cursor} point to the root or sub-tree (internal node) of what to visit.
/// </summary>
/// <param name="cursor"> <seealso cref="PageCursor"/> placed at root of tree or sub-tree. </param>
/// <param name="writeCursor"> Currently active <seealso cref="PageCursor write cursor"/> in tree. </param>
/// <param name="visitor"> <seealso cref="GBPTreeVisitor"/> that should visit the tree. </param>
/// <exception cref="IOException"> on page cache access error. </exception>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: void visitTree(org.neo4j.io.pagecache.PageCursor cursor, org.neo4j.io.pagecache.PageCursor writeCursor, GBPTreeVisitor<KEY,VALUE> visitor) throws java.io.IOException
internal virtual void VisitTree(PageCursor cursor, PageCursor writeCursor, GBPTreeVisitor <KEY, VALUE> visitor)
{
// TreeState
long currentPage = cursor.CurrentPageId;
Pair <TreeState, TreeState> statePair = TreeStatePair.ReadStatePages(cursor, IdSpace.STATE_PAGE_A, IdSpace.STATE_PAGE_B);
visitor.TreeState(statePair);
TreeNode.GoTo(cursor, "back to tree node from reading state", currentPage);
AssertOnTreeNode(Select(cursor, writeCursor));
// Traverse the tree
int level = 0;
do
{
// One level at the time
visitor.BeginLevel(level);
long leftmostSibling = cursor.CurrentPageId;
// Go right through all siblings
VisitLevel(cursor, writeCursor, visitor);
visitor.EndLevel(level);
level++;
// Then go back to the left-most node on this level
TreeNode.GoTo(cursor, "back", leftmostSibling);
} while (GoToLeftmostChild(cursor, writeCursor));
// And continue down to next level if this level was an internal level
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @ParameterizedTest @MethodSource(value = "parameters") void shouldCorrectSelectNewestAndOldestState(State stateA, State stateB, Selected expectedNewest, Selected expectedOldest) throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void ShouldCorrectSelectNewestAndOldestState(State stateA, State stateB, Selected expectedNewest, Selected expectedOldest)
{
// GIVEN
_cursor.next(PAGE_A);
stateA.write(_cursor);
_cursor.next(PAGE_B);
stateB.write(_cursor);
// WHEN
Pair <TreeState, TreeState> states = TreeStatePair.ReadStatePages(_cursor, PAGE_A, PAGE_B);
// THEN
expectedNewest.verify(states, SelectionUseCase.Newest);
expectedOldest.verify(states, SelectionUseCase.Oldest);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: static void visitTreeState(org.neo4j.io.pagecache.PageCursor cursor, GBPTreeVisitor visitor) throws java.io.IOException
internal static void VisitTreeState(PageCursor cursor, GBPTreeVisitor visitor)
{
Pair <TreeState, TreeState> statePair = TreeStatePair.ReadStatePages(cursor, IdSpace.STATE_PAGE_A, IdSpace.STATE_PAGE_B);
visitor.treeState(statePair);
}