Package org.apache.calcite.adapter.enumerable

Class RexImpTable.CoalesceImplementor

java.lang.Object

org.apache.calcite.adapter.enumerable.RexImpTable.CoalesceImplementor

All Implemented Interfaces:

CallImplementor

Enclosing class:

RexImpTable

private static class RexImpTable.CoalesceImplementor
extends java.lang.Object
implements CallImplementor

Implementor for the SQL COALESCE operator.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	CoalesceImplementor()

Method Summary

Modifier and Type	Method	Description
Expression	implement(RexToLixTranslator translator, RexCall call, RexImpTable.NullAs nullAs)	Implements a call.
private Expression	implementRecurse(RexToLixTranslator translator, java.util.List<RexNode> operands, RexImpTable.NullAs nullAs)

Methods inherited from class java.lang.Object

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

Constructor Detail

CoalesceImplementor

private CoalesceImplementor()

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

implementRecurse

private Expression implementRecurse(RexToLixTranslator translator,
                                    java.util.List<RexNode> operands,
                                    RexImpTable.NullAs nullAs)