CyclicMetadataException (Apache Calcite API)

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - java.lang.RuntimeException
    - - org.apache.calcite.rel.metadata.CyclicMetadataException

All Implemented Interfaces:

java.io.Serializable
```
public class CyclicMetadataException
extends java.lang.RuntimeException
```
Exception that indicates that a cycle has been detected while computing metadata.

See Also:

Serialized Form

- Field Summary
  
  Fields
  Modifier and Type Field Description
  
  static CyclicMetadataException INSTANCE
  Singleton instance.
- Constructor Summary
  
  Constructors
  Modifier Constructor Description
  
  private CyclicMetadataException()
  Creates a CyclicMetadataException.
- Method Summary
  - Methods inherited from class java.lang.Throwable
    addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - INSTANCE
```
public static final CyclicMetadataException INSTANCE
```
    Singleton instance. Since this exception is thrown for signaling purposes, rather than on an actual error, re-using a singleton instance saves the effort of constructing an exception instance.
- Constructor Detail
  - CyclicMetadataException
```
private CyclicMetadataException()
```
    Creates a CyclicMetadataException.