Deveel.Data.Sql.Expressions.PreparerVisitor Class Reference

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

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

Static Private Member Functions
static IEnumerable< T >	Prepare< T > (IEnumerable< T > list, IExpressionPreparer preparer)

Private Attributes
readonly IExpressionPreparer	preparer

Detailed Description

Definition at line 21 of file PreparerVisitor.cs.

Constructor & Destructor Documentation

Deveel.Data.Sql.Expressions.PreparerVisitor.PreparerVisitor ( IExpressionPreparer  preparer )

inline

Definition at line 24 of file PreparerVisitor.cs.

                                                             {
            this.preparer = preparer;
        }

Member Function Documentation

static IEnumerable<T> Deveel.Data.Sql.Expressions.PreparerVisitor.Prepare< T > ( IEnumerable< T >  list, IExpressionPreparer  preparer  )

inlinestaticprivate

Type Constraints

T

:

IPreparable

Definition at line 47 of file PreparerVisitor.cs.

                    : IPreparable {
            var newList = new List<T>();
            foreach (var item in list) {
                var newItem = item;
                if (newItem != null) {
                    newItem = (T)newItem.Prepare(preparer);
                }

                newList.Add(newItem);
            }

            return newList.ToArray();
        }

override SqlExpression Deveel.Data.Sql.Expressions.PreparerVisitor.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 28 of file PreparerVisitor.cs.

                                                                      {
            if (preparer.CanPrepare(expression))
                expression = preparer.Prepare(expression);

            return base.Visit(expression);
        }

override SqlExpression Deveel.Data.Sql.Expressions.PreparerVisitor.VisitAssign ( SqlAssignExpression  assign )

inlinevirtual

Parameters

assign

Returns

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

Definition at line 35 of file PreparerVisitor.cs.

                                                                              {
            var reference = assign.ReferenceExpression;
            if (reference != null)
                reference = reference.Prepare(preparer);

            var valueExpression = assign.ValueExpression;
            if (valueExpression != null)
                valueExpression = valueExpression.Prepare(preparer);

            return SqlExpression.Assign(reference, valueExpression);
        }

override SqlExpression Deveel.Data.Sql.Expressions.PreparerVisitor.VisitQuery ( SqlQueryExpression  query )

inlinevirtual

Parameters

query

Returns

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

Definition at line 62 of file PreparerVisitor.cs.

                                                                           {
            var selectColumns = Prepare(query.SelectColumns, preparer);
            var newExpression = new SqlQueryExpression(selectColumns);

            var where = query.WhereExpression;
            if (where != null)
                where = where.Prepare(preparer);

            newExpression.WhereExpression = where;

            var having = query.HavingExpression;
            if (having != null)
                having = having.Prepare(preparer);

            newExpression.HavingExpression = having;

            var from = query.FromClause;
            if (from != null)
                from = (FromClause) ((IPreparable)from).Prepare(preparer);

            query.FromClause = from;

            var nextComposite = query.NextComposite;
            if (nextComposite != null)
                nextComposite = (SqlQueryExpression) nextComposite.Prepare(preparer);

            query.NextComposite = nextComposite;

            return newExpression;
        }

Member Data Documentation

readonly IExpressionPreparer Deveel.Data.Sql.Expressions.PreparerVisitor.preparer

private

Definition at line 22 of file PreparerVisitor.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/PreparerVisitor.cs