Deveel.Data.Sql.Parser.FetchStatementNode Class Reference

Inheritance diagram for Deveel.Data.Sql.Parser.FetchStatementNode:

Protected Member Functions
override ISqlNode	OnChildNode (ISqlNode node)
	During the initialization of the node from the parser, this method is called for every child node added to ChildNodes More...
override void	BuildStatement (StatementBuilder builder)
Protected Member Functions inherited from Deveel.Data.Sql.Parser.SqlNode
virtual void	OnNodeInit ()
	After the initialization of the node from the parser, this method is invoked to let the specific initialization to occur. More...

Properties
string	Direction [get, private set]
string	CursorName [get, private set]
IExpressionNode	Position [get, private set]
IExpressionNode	Into [get, private set]
Properties inherited from Deveel.Data.Sql.Parser.SqlNode
ISqlNode	Parent [get, private set]
	Gets the parent of the current node. More...
string	NodeName [get, private set]
	Gets the name of the node, as expressed in the SQL grammar. More...
IEnumerable< ISqlNode >	ChildNodes [get, private set]
	Gets an immutable list of nodes, children of the current node. More...
IEnumerable< Token >	Tokens [get, private set]
	Gets an immutable list of Token that represent the source of this node. More...
string ISqlNode.	NodeName [get]
ISqlNode ISqlNode.	Parent [get]
IEnumerable< ISqlNode > ISqlNode.	ChildNodes [get]
IEnumerable< Token > ISqlNode.	Tokens [get]
Properties inherited from Deveel.Data.Sql.Parser.ISqlNode
string	NodeName [get]
	Gets the name of the node analyzed from the parser. More...
ISqlNode	Parent [get]
	Gets a reference to the parent ISqlNode, if any. More...
IEnumerable< ISqlNode >	ChildNodes [get]
	Gets a read-only enumeration of the children nodes, if any. More...
IEnumerable< Token >	Tokens [get]
	Gets an enumeration of the tokens composing the this node. More...

Private Member Functions
void	GetDirection (ISqlNode node)
void	GetInto (ISqlNode node)

Static Private Member Functions
static bool	TryParseDirection (string s, out FetchDirection direction)

Additional Inherited Members
Public Member Functions inherited from Deveel.Data.Sql.Parser.SqlNode
	SqlNode ()

Detailed Description

Definition at line 8 of file FetchStatementNode.cs.

Member Function Documentation

override void Deveel.Data.Sql.Parser.FetchStatementNode.BuildStatement ( StatementBuilder  builder )

inlineprotectedvirtual

Implements Deveel.Data.Sql.Parser.SqlStatementNode.

Definition at line 81 of file FetchStatementNode.cs.

                                                                         {
            FetchDirection direction;
            if (!TryParseDirection(Direction, out direction))
                throw new InvalidOperationException();

            var statement = new FetchStatement(CursorName, direction);
            if (Into != null)
                statement.IntoReference = ExpressionBuilder.Build(Into);
            if (Position != null)
                statement.PositionExpression = ExpressionBuilder.Build(Position);

            builder.Statements.Add(statement);
        }

void Deveel.Data.Sql.Parser.FetchStatementNode.GetDirection ( ISqlNode  node )

inlineprivate

Definition at line 29 of file FetchStatementNode.cs.

                                                 {
            var childNode = node.ChildNodes.FirstOrDefault();
            if (childNode == null)
                return;

            childNode = childNode.ChildNodes.FirstOrDefault();
            if (childNode == null)
                throw new SqlParseException();

            if (String.Equals(childNode.NodeName, "NEXT", StringComparison.OrdinalIgnoreCase) ||
                String.Equals(childNode.NodeName, "PRIOR", StringComparison.OrdinalIgnoreCase) ||
                String.Equals(childNode.NodeName, "FIRST", StringComparison.OrdinalIgnoreCase) ||
                String.Equals(childNode.NodeName, "LAST", StringComparison.OrdinalIgnoreCase)) {
                Direction = childNode.NodeName.ToUpper();
            } else if (String.Equals(childNode.NodeName, "ABSOLUTE", StringComparison.OrdinalIgnoreCase) ||
                       String.Equals(childNode.NodeName, "RELATIVE", StringComparison.OrdinalIgnoreCase)) {
                var positionNode = childNode.ChildNodes.FirstOrDefault();
                if (positionNode == null)
                    throw new SqlParseException("The position expression if required in an ABSOLUTE or RELATIVE fetch.");

                var expression = positionNode as IExpressionNode;
                if (expression == null)
                    throw new SqlParseException();

                Direction = childNode.NodeName.ToUpper();
                Position = expression;
            }
        }

void Deveel.Data.Sql.Parser.FetchStatementNode.GetInto ( ISqlNode  node )

inlineprivate

Definition at line 58 of file FetchStatementNode.cs.

                                            {
            foreach (var childNode in node.ChildNodes) {
                if (childNode is IExpressionNode) {
                    Into = childNode as IExpressionNode;
                    break;
                }
            }
        }

override ISqlNode Deveel.Data.Sql.Parser.FetchStatementNode.OnChildNode ( ISqlNode  node )

inlineprotectedvirtual

During the initialization of the node from the parser, this method is called for every child node added to ChildNodes

Parameters

node	The node being added to the list of children.

Returns

Returns a normalized version of the child node, or the node itself.

Reimplemented from Deveel.Data.Sql.Parser.SqlNode.

Definition at line 17 of file FetchStatementNode.cs.

                                                               {
            if (node.NodeName == "direction_opt") {
                GetDirection(node);
            } else if (node is IdentifierNode) {
                CursorName = ((IdentifierNode) node).Text;
            } else if (node.NodeName == "into_opt") {
                GetInto(node);
            }

            return base.OnChildNode(node);
        }

static bool Deveel.Data.Sql.Parser.FetchStatementNode.TryParseDirection ( string  s, out FetchDirection  direction  )

inlinestaticprivate

Definition at line 67 of file FetchStatementNode.cs.

                                                                                      {
#if PCL
            return Enum.TryParse(s, true, out direction);
#else
            try {
                direction = (FetchDirection) Enum.Parse(typeof (FetchDirection), s, true);
                return true;
            } catch (Exception) {
                direction = new FetchDirection();
                return false;
            }
#endif
        }

Property Documentation

string Deveel.Data.Sql.Parser.FetchStatementNode.CursorName

getprivate set

Definition at line 11 of file FetchStatementNode.cs.

string Deveel.Data.Sql.Parser.FetchStatementNode.Direction

getprivate set

Definition at line 9 of file FetchStatementNode.cs.

IExpressionNode Deveel.Data.Sql.Parser.FetchStatementNode.Into

getprivate set

Definition at line 15 of file FetchStatementNode.cs.

IExpressionNode Deveel.Data.Sql.Parser.FetchStatementNode.Position

getprivate set

Definition at line 13 of file FetchStatementNode.cs.

---

The documentation for this class was generated from the following file:

• /var/calculate/remote/distfiles/egit-src/deveeldb.git/src/deveeldb/Deveel.Data.Sql.Parser/FetchStatementNode.cs