Package org.apache.drill.exec.compile

Class QueryClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.apache.drill.exec.compile.QueryClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class QueryClassLoader
extends URLClassLoader

Per-compilation unit class loader that holds both caching and compilation steps.

Constructor Summary

Constructors

Constructor	Description
QueryClassLoader(DrillConfig config, OptionSet sessionOptions)

Method Summary

Modifier and Type	Method	Description
protected Class<?>	findClass(String className)
byte[][]	getClassByteCode(ClassTransformer.ClassNames className, String sourceCode)
long	getNextClassIndex()
void	injectByteCode(String className, byte[] classBytes)

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, findClass, findLibrary, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, loadClass, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Details

QueryClassLoader

public QueryClassLoader(DrillConfig config,
 OptionSet sessionOptions)

Method Details

getNextClassIndex

public long getNextClassIndex()

injectByteCode

public void injectByteCode(String className,
 byte[] classBytes)
                    throws IOException

Throws:

IOException

findClass

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

Overrides:

findClass in class URLClassLoader

Throws:

ClassNotFoundException

getClassByteCode

public byte[][] getClassByteCode(ClassTransformer.ClassNames className,
 String sourceCode)
                          throws org.codehaus.commons.compiler.CompileException,
IOException,
ClassNotFoundException,
ClassTransformationException

Throws:

org.codehaus.commons.compiler.CompileException

IOException

ClassNotFoundException

ClassTransformationException