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 and Description
static class	ClassTransformer.ClassNames
static class	ClassTransformer.ClassSet
static class	ClassTransformer.ScalarReplacementOption

Field Summary

Fields

Modifier and Type	Field and Description
static String	SCALAR_REPLACEMENT_OPTION
static TypeValidators.EnumeratedStringValidator	SCALAR_REPLACEMENT_VALIDATOR

Constructor Summary

Constructors

Constructor and Description
ClassTransformer(DrillConfig config, OptionSet optionManager)

Method Summary

Methods

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

Methods inherited from class java.lang.Object

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

Field Detail

SCALAR_REPLACEMENT_OPTION

public static final String SCALAR_REPLACEMENT_OPTION

See Also:

Constant Field Values

SCALAR_REPLACEMENT_VALIDATOR

public static final TypeValidators.EnumeratedStringValidator SCALAR_REPLACEMENT_VALIDATOR

Constructor Detail

ClassTransformer

public ClassTransformer(DrillConfig config,
                OptionSet optionManager)

Method Detail

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