org.apache.calcite.util

Class BarfingInvocationHandler

java.lang.Object

org.apache.calcite.util.BarfingInvocationHandler

All Implemented Interfaces:

InvocationHandler

Direct Known Subclasses:

SqlUtil.DatabaseMetaDataInvocationHandler

public class BarfingInvocationHandler
extends Object
implements InvocationHandler

A class derived from BarfingInvocationHandler handles a method call by looking for a method in itself with identical parameters. If no such method is found, it throws UnsupportedOperationException.

It is useful when you are prototyping code. You can rapidly create a prototype class which implements the important methods in an interface, then implement other methods as they are called.

See Also:

DelegatingInvocationHandler

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BarfingInvocationHandler()

Method Summary

Modifier and Type	Method and Description
@Nullable Object	invoke(Object proxy, Method method, @Nullable Object[] args)
protected UnsupportedOperationException	noMethod(Method method) Called when this class (or its derived class) does not have the required method from the interface.

Methods inherited from class java.lang.Object

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

Constructor Detail

BarfingInvocationHandler

protected BarfingInvocationHandler()

Method Detail

invoke

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

Specified by:

invoke in interface InvocationHandler

Throws:

Throwable

noMethod

protected UnsupportedOperationException noMethod(Method method)

Called when this class (or its derived class) does not have the required method from the interface.