CommonRelExpressionRegistry (Apache Calcite API)

java.lang.Object

org.apache.calcite.plan.CommonRelExpressionRegistry

@API(since="1.41.0", status=INTERNAL) public final class CommonRelExpressionRegistry extends Object

A registry of common relational expressions for a given query.

The registry is only meant to hold common expressions for a single query.

The class is not thread-safe.

Constructor Summary

Constructors

Constructor

Description

CommonRelExpressionRegistry()
Method Summary

Modifier and Type

Method

Description

void

add(RelNode rel)

Adds the specified expression to this registry.

Stream<RelNode>

entries()

Returns a stream with all expression entries.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- CommonRelExpressionRegistry
  
  public CommonRelExpressionRegistry()
Method Details
- add
  
  public void add(RelNode rel)
  
  Adds the specified expression to this registry.
  
  Parameters:
  
  rel - a relational expression to be added to the registry.
- entries
  
  public Stream<RelNode> entries()
  
  Returns a stream with all expression entries.
  
  Returns:
  
  a stream with all expression entries