Package org.apache.calcite.rel.externalize

Class RelDotWriter

java.lang.Object

org.apache.calcite.rel.externalize.RelWriterImpl

org.apache.calcite.rel.externalize.RelDotWriter

All Implemented Interfaces:

RelWriter

@Enclosing
public class RelDotWriter
extends RelWriterImpl

Utility to dump a rel node plan in dot format.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	RelDotWriter.WriteOption	Options for displaying the rel node plan in dot format.

Field Summary

Fields inherited from class org.apache.calcite.rel.externalize.RelWriterImpl

detailLevel, pw, spacer, withIdPrefix

Constructor Summary

Constructors

Constructor	Description
RelDotWriter(PrintWriter pw, SqlExplainLevel detailLevel, boolean withIdPrefix)
RelDotWriter(PrintWriter pw, SqlExplainLevel detailLevel, boolean withIdPrefix, RelDotWriter.WriteOption option)

Method Summary

Modifier and Type	Method	Description
RelWriter	done(RelNode node)	Writes the completed explanation.
protected void	explain_(RelNode rel, List<Pair<String,@Nullable Object>> values)
protected String	getRelNodeLabel(RelNode rel, List<Pair<String,@Nullable Object>> values)

Methods inherited from class org.apache.calcite.rel.externalize.RelWriterImpl

explain, getDetailLevel, item, simple

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.rel.RelWriter

input, itemIf, nest

Constructor Details

RelDotWriter

public RelDotWriter(PrintWriter pw,
 SqlExplainLevel detailLevel,
 boolean withIdPrefix)

RelDotWriter

public RelDotWriter(PrintWriter pw,
 SqlExplainLevel detailLevel,
 boolean withIdPrefix,
 RelDotWriter.WriteOption option)

Method Details

explain_

protected void explain_(RelNode rel,
 List<Pair<String,@Nullable Object>> values)

Overrides:

explain_ in class RelWriterImpl

getRelNodeLabel

protected String getRelNodeLabel(RelNode rel,
 List<Pair<String,@Nullable Object>> values)

done

public RelWriter done(RelNode node)

Description copied from interface: RelWriter

Writes the completed explanation.

Specified by:

done in interface RelWriter

Overrides:

done in class RelWriterImpl