org.apache.calcite.rel.metadata

Class CachingRelMetadataProvider.CachingInvocationHandler

java.lang.Object

org.apache.calcite.rel.metadata.CachingRelMetadataProvider.CachingInvocationHandler

All Implemented Interfaces:

InvocationHandler

Enclosing class:

CachingRelMetadataProvider

private class CachingRelMetadataProvider.CachingInvocationHandler
extends Object
implements InvocationHandler

Implementation of InvocationHandler for calls to a CachingRelMetadataProvider. Each request first looks in the cache; if the cache entry is present and not expired, returns the cache entry, otherwise computes the value and stores in the cache.

Field Summary

Fields

Modifier and Type	Field and Description
private Metadata	metadata

Constructor Summary

Constructors

Constructor and Description
CachingInvocationHandler(Metadata metadata)

Method Summary

Modifier and Type	Method and Description
Object	invoke(Object proxy, Method method, Object[] args)

Methods inherited from class java.lang.Object

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

Field Detail

metadata

private final Metadata metadata

Constructor Detail

CachingInvocationHandler

CachingInvocationHandler(Metadata metadata)

Method Detail

invoke

public Object invoke(Object proxy,
                     Method method,
                     Object[] args)
              throws Throwable

Specified by:

invoke in interface InvocationHandler

Throws:

Throwable