Deveel.Data.Sql.Query.QueryPlanner.QueryExpressionPreparer Class Reference

Inheritance diagram for Deveel.Data.Sql.Query.QueryPlanner.QueryExpressionPreparer:

Public Member Functions
	QueryExpressionPreparer (QueryPlanner planner, QueryExpressionFrom parent, IRequest context)
bool	CanPrepare (SqlExpression expression)
	Verifies whether the instance of the interface can prepare the given expression. More...
SqlExpression	Prepare (SqlExpression expression)
	Returns the new translated object to be mutated from the given expression. More...

Private Attributes
readonly QueryPlanner	planner
readonly QueryExpressionFrom	parent
readonly IRequest	context

Detailed Description

Definition at line 636 of file QueryPlanner.cs.

Constructor & Destructor Documentation

Deveel.Data.Sql.Query.QueryPlanner.QueryExpressionPreparer.QueryExpressionPreparer ( QueryPlanner  planner, QueryExpressionFrom  parent, IRequest  context  )

inline

Definition at line 641 of file QueryPlanner.cs.

                                                                                                               {
                this.planner = planner;
                this.parent = parent;
                this.context = context;
            }

Member Function Documentation

bool Deveel.Data.Sql.Query.QueryPlanner.QueryExpressionPreparer.CanPrepare ( SqlExpression  expression )

inline

Verifies whether the instance of the interface can prepare the given expression.

Parameters

expression

The expression object to verify.

Returns

Returns true if this preparer will prepare the given object in an expression.

Implements Deveel.Data.Sql.Expressions.IExpressionPreparer.

Definition at line 647 of file QueryPlanner.cs.

                                                             {
                return expression is SqlQueryExpression;
            }

SqlExpression Deveel.Data.Sql.Query.QueryPlanner.QueryExpressionPreparer.Prepare ( SqlExpression  expression )

inline

Returns the new translated object to be mutated from the given expression.

Parameters

expression

Returns

Implements Deveel.Data.Sql.Expressions.IExpressionPreparer.

Definition at line 651 of file QueryPlanner.cs.

                                                                   {
                var queryExpression = (SqlQueryExpression) expression;
                var queryFrom = QueryExpressionFrom.Create(context, queryExpression);
                queryFrom.Parent = parent;
                var plan = planner.PlanQuery(context, queryExpression, queryFrom, null, null);
                return SqlExpression.Constant(new DataObject(new QueryType(), new SqlQueryObject(new CachePointNode(plan))));
            }

Member Data Documentation

readonly IRequest Deveel.Data.Sql.Query.QueryPlanner.QueryExpressionPreparer.context

private

Definition at line 639 of file QueryPlanner.cs.

readonly QueryExpressionFrom Deveel.Data.Sql.Query.QueryPlanner.QueryExpressionPreparer.parent

private

Definition at line 638 of file QueryPlanner.cs.

readonly QueryPlanner Deveel.Data.Sql.Query.QueryPlanner.QueryExpressionPreparer.planner

private

Definition at line 637 of file QueryPlanner.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/QueryPlanner.cs