Package net.hydromatic.morel.eval

Class Codes.YieldRowSink

java.lang.Object

net.hydromatic.morel.eval.Codes.YieldRowSink

All Implemented Interfaces:

Codes.RowSink, Describable

Enclosing class:

Codes

private static class Codes.YieldRowSink
extends Object
implements Codes.RowSink

Implementation of Codes.RowSink for a yield step.

If this is the last step, use instead a Codes.CollectRowSink. It is more efficient; there is no downstream row sink; and a terminal yield step is allowed to generate expressions that are not records. Non-record expressions (e.g. int expressions) do not have a name, and therefore the value cannot be passed via the EvalEnv.

Field Summary

Fields

Modifier and Type	Field	Description
private com.google.common.collect.ImmutableList<Code>	codes
private com.google.common.collect.ImmutableList<String>	names
private Codes.RowSink	rowSink
private Object[]	values

Constructor Summary

Constructors

Constructor	Description
YieldRowSink(com.google.common.collect.ImmutableList<String> names, com.google.common.collect.ImmutableList<Code> codes, Codes.RowSink rowSink)

Method Summary

Modifier and Type	Method	Description
void	accept(EvalEnv env)
Describer	describe(Describer describer)
List<Object>	result(EvalEnv env)

Methods inherited from class java.lang.Object

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

Field Detail

names

private final com.google.common.collect.ImmutableList<String> names

codes

private final com.google.common.collect.ImmutableList<Code> codes

rowSink

private final Codes.RowSink rowSink

values

private final Object[] values

Constructor Detail

YieldRowSink

YieldRowSink(com.google.common.collect.ImmutableList<String> names,
             com.google.common.collect.ImmutableList<Code> codes,
             Codes.RowSink rowSink)

Method Detail

describe

public Describer describe(Describer describer)

Specified by:

describe in interface Describable

accept

public void accept(EvalEnv env)

Specified by:

accept in interface Codes.RowSink

result

public List<Object> result(EvalEnv env)

Specified by:

result in interface Codes.RowSink