org.apache.drill.exec.compile

Class CachedClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.apache.drill.exec.compile.CachedClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class CachedClassLoader
extends URLClassLoader

Class loader for "plain-old Java" generated classes. Very basic implementation: allows defining a class from byte codes and finding the loaded classes. Delegates all other class requests to the thread context class loader. This structure ensures that a generated class can find both its own inner classes as well as all the standard Drill implementation classes.

Constructor Summary

Constructors

Constructor and Description
CachedClassLoader()

Method Summary

Modifier and Type	Method and Description
void	addClass(String fqcn, byte[] byteCodes)
void	addClasses(Map<String,byte[]> results)
Class<?>	findClass(String className)

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findResource, findResources, getPermissions, getResourceAsStream, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, loadClass, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedClassLoader

public CachedClassLoader()

Method Detail

addClass

public void addClass(String fqcn,
                     byte[] byteCodes)

findClass

public Class<?> findClass(String className)
                   throws ClassNotFoundException

Overrides:

findClass in class URLClassLoader

Throws:

ClassNotFoundException

addClasses

public void addClasses(Map<String,byte[]> results)