org.apache.calcite.adapter.enumerable

Class RexImpTable.SystemFunctionImplementor

java.lang.Object

org.apache.calcite.adapter.enumerable.RexImpTable.SystemFunctionImplementor

All Implemented Interfaces:

CallImplementor

Enclosing class:

RexImpTable

private static class RexImpTable.SystemFunctionImplementor
extends Object
implements CallImplementor

Implementor for SQL system functions.

Several of these are represented internally as constant values, set per execution.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	SystemFunctionImplementor()

Method Summary

Modifier and Type	Method and Description
Expression	implement(RexToLixTranslator translator, RexCall call, RexImpTable.NullAs nullAs) Implements a call.

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemFunctionImplementor

private SystemFunctionImplementor()

Method Detail

implement

public Expression implement(RexToLixTranslator translator,
                            RexCall call,
                            RexImpTable.NullAs nullAs)

Description copied from interface: CallImplementor

Implements a call.

Specified by:

implement in interface CallImplementor

Parameters:

translator - Translator for the call

call - Call that should be implemented

nullAs - The desired mode of null translation

Returns:

Translated call