org.apache.drill.exec.expr.fn

Class DrillSimpleFuncHolder

java.lang.Object

org.apache.drill.exec.expr.fn.AbstractFuncHolder

org.apache.drill.exec.expr.fn.DrillFuncHolder

org.apache.drill.exec.expr.fn.DrillSimpleFuncHolder

All Implemented Interfaces:

FuncHolder

Direct Known Subclasses:

DrillComplexWriterFuncHolder

public class DrillSimpleFuncHolder
extends DrillFuncHolder

Constructor Summary

Constructors

Constructor and Description
DrillSimpleFuncHolder(FunctionAttributes functionAttributes, FunctionInitializer initializer)

Method Summary

Methods

Modifier and Type	Method and Description
DrillSimpleFunc	createInterpreter()
protected ClassGenerator.HoldingContainer	generateEvalBody(ClassGenerator<?> g, ClassGenerator.HoldingContainer[] inputVariables, String body, com.sun.codemodel.JVar[] workspaceJVars, FieldReference ref)
boolean	isNested()
ClassGenerator.HoldingContainer	renderEnd(ClassGenerator<?> classGenerator, ClassGenerator.HoldingContainer[] inputVariables, com.sun.codemodel.JVar[] workspaceJVars, FieldReference fieldReference) Generate methods body and complete the code generation.

Methods inherited from class org.apache.drill.exec.expr.fn.DrillFuncHolder

addProtectedBlock, checkPrecisionRange, declareWorkspaceVariables, generateBody, getClassLoader, getCostCategory, getExpr, getInputParameters, getNullHandling, getParamCount, getParameters, getParmMajorType, getRegisteredNames, getReturnType, getReturnType, getReturnValue, getWorkspaceVars, isAggregating, isConstant, isDeterministic, isFieldReader, isNiladic, matches, meth, meth, renderStart, toString

Methods inherited from class org.apache.drill.exec.expr.fn.AbstractFuncHolder

isComplexWriterFuncHolder, renderMiddle

Methods inherited from class java.lang.Object

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

Constructor Detail

DrillSimpleFuncHolder

public DrillSimpleFuncHolder(FunctionAttributes functionAttributes,
                     FunctionInitializer initializer)

Method Detail

isNested

public boolean isNested()

Overrides:

isNested in class AbstractFuncHolder

createInterpreter

public DrillSimpleFunc createInterpreter()
                                  throws Exception

Throws:

Exception

renderEnd

public ClassGenerator.HoldingContainer renderEnd(ClassGenerator<?> classGenerator,
                                        ClassGenerator.HoldingContainer[] inputVariables,
                                        com.sun.codemodel.JVar[] workspaceJVars,
                                        FieldReference fieldReference)

Description copied from class: AbstractFuncHolder

Generate methods body and complete the code generation.

Specified by:

renderEnd in class AbstractFuncHolder

Parameters:

classGenerator - the class responsible for code generation

inputVariables - the source of the vector holders

workspaceJVars - class fields

fieldReference - reference of the output field

Returns:

HoldingContainer for return value

generateEvalBody

protected ClassGenerator.HoldingContainer generateEvalBody(ClassGenerator<?> g,
                                               ClassGenerator.HoldingContainer[] inputVariables,
                                               String body,
                                               com.sun.codemodel.JVar[] workspaceJVars,
                                               FieldReference ref)