org.apache.calcite.rel.metadata

Class CachingRelMetadataProvider.CacheEntry

java.lang.Object

org.apache.calcite.rel.metadata.CachingRelMetadataProvider.CacheEntry

Enclosing class:

CachingRelMetadataProvider

private static class CachingRelMetadataProvider.CacheEntry
extends Object

An entry in the cache. Consists of the cached object and the timestamp when the entry is valid. If read at a later timestamp, the entry will be invalid and will be re-computed as if it did not exist. The net effect is a lazy-flushing cache.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) Object	result
(package private) long	timestamp

Constructor Summary

Constructors

Modifier	Constructor and Description
private	CacheEntry()

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

timestamp

long timestamp

result

Object result

Constructor Detail

CacheEntry

private CacheEntry()