org.apache.calcite.plan

Interface Context

public interface Context

Provides library users a way to store data within the planner session and access it within rules. Frameworks can implement their own implementation of Context and pass that as part of the FrameworkConfig.

Method Summary

Methods

Modifier and Type	Method and Description
<T> T	unwrap(Class<T> clazz) If assignable to clazz, provide the underlying clazz.

Method Detail

unwrap

<T> T unwrap(Class<T> clazz)

If assignable to clazz, provide the underlying clazz.

Parameters:

clazz - The Class object of the desired class.

Returns:

Underlying object if matches, otherwise null.