private TableNode BindSourceNode(Plan plan, TableNode sourceNode)
{
plan.PushCursorContext(_cursorContext);
try
{
plan.PushGlobalContext();
try
{
// if the requested cursor type is static, ensure that is the case
if ((plan.CursorContext.CursorType == DAE.CursorType.Static) && (sourceNode.CursorType != DAE.CursorType.Static))
{
sourceNode = (TableNode)Compiler.EmitCopyNode(plan, sourceNode);
sourceNode.InferPopulateNode(plan);
sourceNode.DeterminePotentialDevice(plan);
sourceNode.DetermineDevice(plan);
sourceNode.DetermineAccessPath(plan);
}
// Navigable
if ((plan.CursorContext.CursorCapabilities & CursorCapability.Navigable) != 0)
{
sourceNode.CheckCapability(CursorCapability.Navigable);
}
// If the cursor is requested countable, it must be satisfied by a copy node
if ((plan.CursorContext.CursorCapabilities & CursorCapability.Countable) != 0)
{
if (!sourceNode.Supports(CursorCapability.Countable))
{
sourceNode = (TableNode)Compiler.EmitCopyNode(plan, sourceNode);
sourceNode.InferPopulateNode(plan);
sourceNode.DeterminePotentialDevice(plan);
sourceNode.DetermineDevice(plan);
sourceNode.DetermineAccessPath(plan);
}
}
// BackwardsNavigable
// Bookmarkable
// Searchable
if
(
(((plan.CursorContext.CursorCapabilities & CursorCapability.BackwardsNavigable) != 0) && !sourceNode.Supports(CursorCapability.BackwardsNavigable)) ||
(((plan.CursorContext.CursorCapabilities & CursorCapability.Bookmarkable) != 0) && !sourceNode.Supports(CursorCapability.Bookmarkable)) ||
(((plan.CursorContext.CursorCapabilities & CursorCapability.Searchable) != 0) && !sourceNode.Supports(CursorCapability.Searchable))
)
{
sourceNode = (TableNode)Compiler.EmitBrowseNode(plan, sourceNode, true);
sourceNode.InferPopulateNode(plan);
sourceNode.DeterminePotentialDevice(plan);
sourceNode.DetermineDevice(plan);
sourceNode.DetermineAccessPath(plan);
}
// Updateable
if ((plan.CursorContext.CursorCapabilities & CursorCapability.Updateable) != 0)
{
sourceNode.CheckCapability(CursorCapability.Updateable);
}
// Truncateable
if ((plan.CursorContext.CursorCapabilities & CursorCapability.Truncateable) != 0)
{
sourceNode.CheckCapability(CursorCapability.Truncateable);
}
}
finally
{
plan.PopGlobalContext();
}
}
finally
{
plan.PopCursorContext();
}
return(sourceNode);
}