internal static ProviderCommandInfo Create(Command command, System.Data.Entity.Core.Query.InternalTrees.Node node)
{
PhysicalProjectOp op = node.Op as PhysicalProjectOp;
System.Data.Entity.Core.Query.PlanCompiler.PlanCompiler.Assert(op != null, "Expected root Op to be a physical Project");
DbCommandTree commandTree = CTreeGenerator.Generate(command, node);
DbQueryCommandTree queryCommandTree = commandTree as DbQueryCommandTree;
System.Data.Entity.Core.Query.PlanCompiler.PlanCompiler.Assert(queryCommandTree != null, "null query command tree");
CollectionType edmType = TypeHelpers.GetEdmType <CollectionType>(queryCommandTree.Query.ResultType);
System.Data.Entity.Core.Query.PlanCompiler.PlanCompiler.Assert(TypeSemantics.IsRowType(edmType.TypeUsage), "command rowtype is not a record");
ProviderCommandInfoUtils.BuildOutputVarMap(op, edmType.TypeUsage);
return(new ProviderCommandInfo(commandTree));
}
/// <summary>
/// Creates a ProviderCommandInfo for the given node.
/// This method should be called when the keys, foreign keys and sort keys are known ahead of time.
/// Typically it is used when the original command is factored into multiple commands.
/// </summary>
/// <param name="command">The owning command, used for creating VarVecs, etc</param>
/// <param name="node">The root of the sub-command for which a ProviderCommandInfo should be generated</param>
/// <param name="children">A list of ProviderCommandInfos that were created for the child sub-commands.</param>
/// <returns>The resulting ProviderCommandInfo</returns>
internal static ProviderCommandInfo Create(
Command command,
Node node,
List <ProviderCommandInfo> children)
{
PhysicalProjectOp projectOp = node.Op as PhysicalProjectOp;
PlanCompiler.Assert(projectOp != null, "Expected root Op to be a physical Project");
// build up the CQT
DbCommandTree ctree = CTreeGenerator.Generate(command, node);
DbQueryCommandTree cqtree = ctree as DbQueryCommandTree;
PlanCompiler.Assert(cqtree != null, "null query command tree");
// Get the rowtype for the result cqt
md.CollectionType collType = TypeHelpers.GetEdmType <md.CollectionType>(cqtree.Query.ResultType);
PlanCompiler.Assert(md.TypeSemantics.IsRowType(collType.TypeUsage), "command rowtype is not a record");
// Build up a mapping from Vars to the corresponding output property/column
Dictionary <Var, md.EdmProperty> outputVarMap = BuildOutputVarMap(projectOp, collType.TypeUsage);
return(new ProviderCommandInfo(ctree, children));
}
