org.apache.drill.exec.expr

Class CodeGenerator<T>

java.lang.Object

org.apache.drill.exec.expr.CodeGenerator<T>

Type Parameters:

T - The interface that results from compiling and merging the runtime code that is generated.

public class CodeGenerator<T>
extends Object

A code generator is responsible for generating the Java source code required to complete the implementation of an abstract template. It is used with a class transformer to merge precompiled template code with runtime generated and compiled query specific code to create a runtime instance. A code generator can contain one or more ClassGenerators that implement outer and inner classes associated with a particular runtime generated instance.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj)
void	generate()
String	generateAndGet()
static <T> CodeGenerator<T>	get(MappingSet mappingSet, TemplateClassDefinition<T> definition, FunctionImplementationRegistry funcRegistry)
static <T> CodeGenerator<T>	get(TemplateClassDefinition<T> definition, FunctionImplementationRegistry funcRegistry)
TemplateClassDefinition<T>	getDefinition()
String	getGeneratedCode()
String	getMaterializedClassName()
ClassGenerator<T>	getRoot()
static <T> ClassGenerator<T>	getRoot(MappingSet mappingSet, TemplateClassDefinition<T> definition, FunctionImplementationRegistry funcRegistry)
static <T> ClassGenerator<T>	getRoot(TemplateClassDefinition<T> definition, FunctionImplementationRegistry funcRegistry)
int	hashCode()

Methods inherited from class java.lang.Object

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

Method Detail

getRoot

public ClassGenerator<T> getRoot()

generate

public void generate()
              throws IOException

Throws:

IOException

generateAndGet

public String generateAndGet()
                      throws IOException

Throws:

IOException

getGeneratedCode

public String getGeneratedCode()

getDefinition

public TemplateClassDefinition<T> getDefinition()

getMaterializedClassName

public String getMaterializedClassName()

get

public static <T> CodeGenerator<T> get(TemplateClassDefinition<T> definition,
                       FunctionImplementationRegistry funcRegistry)

getRoot

public static <T> ClassGenerator<T> getRoot(TemplateClassDefinition<T> definition,
                            FunctionImplementationRegistry funcRegistry)

getRoot

public static <T> ClassGenerator<T> getRoot(MappingSet mappingSet,
                            TemplateClassDefinition<T> definition,
                            FunctionImplementationRegistry funcRegistry)

get

public static <T> CodeGenerator<T> get(MappingSet mappingSet,
                       TemplateClassDefinition<T> definition,
                       FunctionImplementationRegistry funcRegistry)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object