Deveel.Data.Sql.Query.QueryExpressionExtensions.ReferenceDiscovery Class Reference

Inheritance diagram for Deveel.Data.Sql.Query.QueryExpressionExtensions.ReferenceDiscovery:

Public Member Functions
	ReferenceDiscovery ()
IEnumerable< ObjectName >	Discover (SqlExpression expression)
override SqlExpression	VisitConstant (SqlConstantExpression constant)
override SqlExpression	VisitFunctionCall (SqlFunctionCallExpression expression)
	Visits the expression that calls the function defined. More...
override SqlExpression	VisitReference (SqlReferenceExpression reference)
Public Member Functions inherited from Deveel.Data.Sql.Expressions.SqlExpressionVisitor
virtual SqlExpression	Visit (SqlExpression expression)
	Visits a given SQL expression. More...
virtual SqlExpression[]	VisitExpressionList (SqlExpression[] list)
	Visits a list of expressions given. More...
virtual SqlExpression	VisitBinary (SqlBinaryExpression binaryEpression)
virtual SqlExpression	VisitUnary (SqlUnaryExpression unary)
virtual SqlExpression	VisitCast (SqlCastExpression castExpression)
virtual SqlExpression	VisitVariableReference (SqlVariableReferenceExpression reference)
virtual SqlExpression	VisitAssign (SqlAssignExpression assign)
virtual SqlExpression	VisitConditional (SqlConditionalExpression conditional)
virtual SqlExpression	VisitTuple (SqlTupleExpression expression)
virtual SqlExpression	VisitQuery (SqlQueryExpression query)

Private Attributes
readonly List< ObjectName >	columnNames

Detailed Description

Definition at line 53 of file QueryExpressionExtensions.cs.

Constructor & Destructor Documentation

Deveel.Data.Sql.Query.QueryExpressionExtensions.ReferenceDiscovery.ReferenceDiscovery ( )

inline

Definition at line 56 of file QueryExpressionExtensions.cs.

                                        {
                columnNames = new List<ObjectName>();
            }

Member Function Documentation

IEnumerable<ObjectName> Deveel.Data.Sql.Query.QueryExpressionExtensions.ReferenceDiscovery.Discover ( SqlExpression  expression )

inline

Definition at line 60 of file QueryExpressionExtensions.cs.

                                                                              {
                Visit(expression);
                return columnNames.ToArray();
            }

override SqlExpression Deveel.Data.Sql.Query.QueryExpressionExtensions.ReferenceDiscovery.VisitConstant ( SqlConstantExpression  constant )

inlinevirtual

Parameters

constant

Returns

Reimplemented from Deveel.Data.Sql.Expressions.SqlExpressionVisitor.

Definition at line 65 of file QueryExpressionExtensions.cs.

                                                                                        {
                var value = constant.Value;
                if (value.Type is ArrayType) {
                    var array = (SqlArray) value.Value;
                    foreach (var element in array) {
                        columnNames.AddRange(element.DiscoverReferences());
                    }
                }

                return base.VisitConstant(constant);
            }

override SqlExpression Deveel.Data.Sql.Query.QueryExpressionExtensions.ReferenceDiscovery.VisitFunctionCall ( SqlFunctionCallExpression  expression )

inlinevirtual

Visits the expression that calls the function defined.

Parameters

expression

The SqlFunctionCallExpression to visit.

Returns

Reimplemented from Deveel.Data.Sql.Expressions.SqlExpressionVisitor.

Definition at line 77 of file QueryExpressionExtensions.cs.

                                                                                                  {
                var args = expression.Arguments;
                foreach (var arg in args) {
                    columnNames.AddRange(arg.DiscoverReferences());
                }

                return base.VisitFunctionCall(expression);
            }

override SqlExpression Deveel.Data.Sql.Query.QueryExpressionExtensions.ReferenceDiscovery.VisitReference ( SqlReferenceExpression  reference )

inlinevirtual

Parameters

reference

Returns

Reimplemented from Deveel.Data.Sql.Expressions.SqlExpressionVisitor.

Definition at line 86 of file QueryExpressionExtensions.cs.

                                                                                           {
                columnNames.Add(reference.ReferenceName);
                return base.VisitReference(reference);
            }

Member Data Documentation

readonly List<ObjectName> Deveel.Data.Sql.Query.QueryExpressionExtensions.ReferenceDiscovery.columnNames

private

Definition at line 54 of file QueryExpressionExtensions.cs.

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

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