Deveel.Data.Sql.Expressions.ReturnTypeVisitor Class Reference

Inheritance diagram for Deveel.Data.Sql.Expressions.ReturnTypeVisitor:

Public Member Functions
	ReturnTypeVisitor (IRequest query, IVariableResolver variableResolver)
override SqlExpression	VisitBinary (SqlBinaryExpression binaryEpression)
override SqlExpression	VisitConstant (SqlConstantExpression constant)
override SqlExpression	VisitFunctionCall (SqlFunctionCallExpression expression)
	Visits the expression that calls the function defined. More...
override SqlExpression	VisitReference (SqlReferenceExpression reference)
override SqlExpression	Visit (SqlExpression expression)
	Visits a given SQL expression. More...
SqlType	GetType (SqlExpression expression)
Public Member Functions inherited from Deveel.Data.Sql.Expressions.SqlExpressionVisitor
virtual SqlExpression[]	VisitExpressionList (SqlExpression[] list)
	Visits a list of expressions given. More...
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 Member Functions
SqlExpression	VisitQueryReference (QueryReferenceExpression expression)

Private Attributes
readonly IRequest	query
readonly IVariableResolver	variableResolver
SqlType	sqlType

Detailed Description

Definition at line 24 of file ReturnTypeVisitor.cs.

Constructor & Destructor Documentation

Deveel.Data.Sql.Expressions.ReturnTypeVisitor.ReturnTypeVisitor ( IRequest  query, IVariableResolver  variableResolver  )

inline

Definition at line 30 of file ReturnTypeVisitor.cs.

                                                                                     {
            this.query = query;
            this.variableResolver = variableResolver;

            sqlType = PrimitiveTypes.Null();
        }

Member Function Documentation

SqlType Deveel.Data.Sql.Expressions.ReturnTypeVisitor.GetType ( SqlExpression  expression )

inline

Definition at line 90 of file ReturnTypeVisitor.cs.

                                                         {
            Visit(expression);
            return sqlType;
        }

override SqlExpression Deveel.Data.Sql.Expressions.ReturnTypeVisitor.Visit ( SqlExpression  expression )

inlinevirtual

Visits a given SQL expression.

Parameters

expression

The SqlExpression to visit.

Returns

Returns an instance of SqlExpression as result of the visit.

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

Definition at line 78 of file ReturnTypeVisitor.cs.

                                                                      {
            if (expression is QueryReferenceExpression)
                return VisitQueryReference((QueryReferenceExpression) expression);

            return base.Visit(expression);
        }

override SqlExpression Deveel.Data.Sql.Expressions.ReturnTypeVisitor.VisitBinary ( SqlBinaryExpression  binaryEpression )

inlinevirtual

Parameters

binaryEpression

Returns

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

Definition at line 37 of file ReturnTypeVisitor.cs.

                                                                                       {
            switch (binaryEpression.ExpressionType) {
                case SqlExpressionType.Add:
                case SqlExpressionType.Subtract:
                case SqlExpressionType.Multiply:
                case SqlExpressionType.Modulo:
                case SqlExpressionType.Divide:
                    sqlType = PrimitiveTypes.Numeric();
                    break;
                default:
                    // we assume the expression type is already been check to be binary.
                    sqlType = PrimitiveTypes.Boolean();
                    break;

            }
            
            return base.VisitBinary(binaryEpression);
        }

override SqlExpression Deveel.Data.Sql.Expressions.ReturnTypeVisitor.VisitConstant ( SqlConstantExpression  constant )

inlinevirtual

Parameters

constant

Returns

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

Definition at line 56 of file ReturnTypeVisitor.cs.

                                                                                    {
            sqlType = constant.Value.Type;

            return base.VisitConstant(constant);
        }

override SqlExpression Deveel.Data.Sql.Expressions.ReturnTypeVisitor.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 62 of file ReturnTypeVisitor.cs.

                                                                                              {
            var invoke = new Invoke(expression.FunctioName, expression.Arguments);
            var function = invoke.ResolveRoutine(query) as IFunction;
            if (function != null)
                sqlType = function.ReturnType(invoke, query, variableResolver);

            return base.VisitFunctionCall(expression);
        }

SqlExpression Deveel.Data.Sql.Expressions.ReturnTypeVisitor.VisitQueryReference ( QueryReferenceExpression  expression )

inlineprivate

Definition at line 85 of file ReturnTypeVisitor.cs.

                                                                                       {
            sqlType = expression.QueryReference.ReturnType;
            return expression;
        }

override SqlExpression Deveel.Data.Sql.Expressions.ReturnTypeVisitor.VisitReference ( SqlReferenceExpression  reference )

inlinevirtual

Parameters

reference

Returns

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

Definition at line 71 of file ReturnTypeVisitor.cs.

                                                                                       {
            var name = reference.ReferenceName;
            sqlType = variableResolver.ReturnType(name);

            return base.VisitReference(reference);
        }

Member Data Documentation

readonly IRequest Deveel.Data.Sql.Expressions.ReturnTypeVisitor.query

private

Definition at line 25 of file ReturnTypeVisitor.cs.

SqlType Deveel.Data.Sql.Expressions.ReturnTypeVisitor.sqlType

private

Definition at line 28 of file ReturnTypeVisitor.cs.

readonly IVariableResolver Deveel.Data.Sql.Expressions.ReturnTypeVisitor.variableResolver

private

Definition at line 26 of file ReturnTypeVisitor.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.Expressions/ReturnTypeVisitor.cs