org.apache.calcite.interpreter

Class JaninoRexCompiler

java.lang.Object

org.apache.calcite.interpreter.JaninoRexCompiler

All Implemented Interfaces:

Interpreter.ScalarCompiler

public class JaninoRexCompiler
extends Object
implements Interpreter.ScalarCompiler

Compiles a scalar expression (RexNode) to an expression that can be evaluated (Scalar) by generating a Java AST and compiling it to a class using Janino.

Field Summary

Fields

Modifier and Type	Field and Description
private RexBuilder	rexBuilder

Constructor Summary

Constructors

Constructor and Description
JaninoRexCompiler(RexBuilder rexBuilder)

Method Summary

Modifier and Type	Method and Description
(package private) static Scalar	baz(ParameterExpression context_, ParameterExpression outputValues_, BlockStatement block) Given a method that implements Scalar.execute(Context, Object[]), adds a bridge method that implements Scalar.execute(Context), and compiles.
Scalar	compile(List<RexNode> nodes, RelDataType inputRowType)
(package private) static Scalar	getScalar(ClassDeclaration expr, String s)

Methods inherited from class java.lang.Object

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

Field Detail

rexBuilder

private final RexBuilder rexBuilder

Constructor Detail

JaninoRexCompiler

public JaninoRexCompiler(RexBuilder rexBuilder)

Method Detail

compile

public Scalar compile(List<RexNode> nodes,
                      RelDataType inputRowType)

Specified by:

compile in interface Interpreter.ScalarCompiler

baz

static Scalar baz(ParameterExpression context_,
                  ParameterExpression outputValues_,
                  BlockStatement block)

Given a method that implements Scalar.execute(Context, Object[]), adds a bridge method that implements Scalar.execute(Context), and compiles.

getScalar

static Scalar getScalar(ClassDeclaration expr,
                        String s)
                 throws org.codehaus.commons.compiler.CompileException,
                        IOException

Throws:

org.codehaus.commons.compiler.CompileException

IOException