org.apache.calcite.plan

Interface RelOptTable.ViewExpander

All Known Subinterfaces:

RelOptTable.ToRelContext

All Known Implementing Classes:

PlannerImpl, PlannerImpl.ViewExpanderImpl

Enclosing interface:

RelOptTable

public static interface RelOptTable.ViewExpander

Can expand a view into relational expressions.

Method Summary

Modifier and Type	Method and Description
RelRoot	expandView(RelDataType rowType, String queryString, List<String> schemaPath, @Nullable List<String> viewPath) Returns a relational expression that is to be substituted for an access to a SQL view.

Method Detail

expandView

RelRoot expandView(RelDataType rowType,
                   String queryString,
                   List<String> schemaPath,
                   @Nullable List<String> viewPath)

Returns a relational expression that is to be substituted for an access to a SQL view.

Parameters:

rowType - Row type of the view

queryString - Body of the view

schemaPath - Path of a schema wherein to find referenced tables

viewPath - Path of the view, ending with its name; may be null

Returns:

Relational expression