Package org.apache.drill.exec.compile

Class ClassTransformer

java.lang.Object

org.apache.drill.exec.compile.ClassTransformer

public class ClassTransformer
extends Object

Compiles generated code, merges the resulting class with the template class, and performs byte-code cleanup on the resulting byte codes. The most important transform is scalar replacement which replaces occurrences of non-escaping objects with a collection of member variables.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ClassTransformer.ClassNames
static class	ClassTransformer.ClassSet
static enum	ClassTransformer.ScalarReplacementOption

Constructor Summary

Constructors

Constructor	Description
ClassTransformer(DrillConfig config, OptionSet optionManager)

Method Summary

Modifier and Type	Method	Description
Class<?>	getImplementationClass(QueryClassLoader classLoader, TemplateClassDefinition<?> templateDefinition, String entireClass, String materializedClassName)
Class<?>	getImplementationClass(CodeGenerator<?> cg)

Methods inherited from class java.lang.Object

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

Constructor Details

ClassTransformer

public ClassTransformer(DrillConfig config,
 OptionSet optionManager)

Method Details

getImplementationClass

public Class<?> getImplementationClass(CodeGenerator<?> cg)
                                throws ClassTransformationException

Throws:

ClassTransformationException

getImplementationClass

public Class<?> getImplementationClass(QueryClassLoader classLoader,
 TemplateClassDefinition<?> templateDefinition,
 String entireClass,
 String materializedClassName)
                                throws ClassTransformationException

Throws:

ClassTransformationException