org.apache.kyuubi.util.reflect

Class DynClasses.Builder

java.lang.Object

org.apache.kyuubi.util.reflect.DynClasses.Builder

Enclosing class:

DynClasses

public static class DynClasses.Builder
extends Object

Method Summary

Modifier and Type	Method and Description
<S> Class<? extends S>	build() Returns the first implementation or throws RuntimeException if one was not found.
<S> Class<? extends S>	buildChecked() Returns the first implementation or throws ClassNotFoundException if one was not found.
DynClasses.Builder	impl(String className) Checks for an implementation of the class by name.
DynClasses.Builder	loader(ClassLoader newLoader) Set the ClassLoader used to lookup classes by name.
DynClasses.Builder	orNull() Instructs this builder to return null if no class is found, rather than throwing an Exception.

Methods inherited from class java.lang.Object

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

Method Detail

loader

public DynClasses.Builder loader(ClassLoader newLoader)

Set the ClassLoader used to lookup classes by name.

If not set, the current thread's ClassLoader is used.

Parameters:

newLoader - a ClassLoader

Returns:

this Builder for method chaining

impl

public DynClasses.Builder impl(String className)

Checks for an implementation of the class by name.

Parameters:

className - name of a class

Returns:

this Builder for method chaining

orNull

public DynClasses.Builder orNull()

Instructs this builder to return null if no class is found, rather than throwing an Exception.

Returns:

this Builder for method chaining

buildChecked

public <S> Class<? extends S> buildChecked()
                                    throws ClassNotFoundException

Returns the first implementation or throws ClassNotFoundException if one was not found.

Type Parameters:

S - Java superclass

Returns:

a Class for the first implementation found

Throws:

ClassNotFoundException - if no implementation was found

build

public <S> Class<? extends S> build()

Returns the first implementation or throws RuntimeException if one was not found.

Type Parameters:

S - Java superclass

Returns:

a Class for the first implementation found

Throws:

RuntimeException - if no implementation was found