gudusoft.gsqlparser.ir.semantic.diff

Class Divergence

Object

gudusoft.gsqlparser.ir.semantic.diff.Divergence

public final class Divergence
extends Object

One classified divergence between IR and dlineage projections.

outputName encodes which output the divergence belongs to:

• The lower-cased outer-output name for SELECT and aggregate divergences.
• null for FILTER/JOIN row-influence divergences (matches the null-anchor convention on CanonicalLineageEdge).
• The literal string "<query>" for the two query-wide unsupported classes.

Field Summary

Fields

Modifier and Type	Field and Description
static String	DETAIL_OUTPUT_PRESENT Detail value used by the output-presence pass.
static Comparator<Divergence>	ORDER Stable ordering for deterministic JSON output.
static String	QUERY_WIDE Reserved string used by DivergenceClass.UNSUPPORTED_BY_IR/_DLINEAGE.

Constructor Summary

Constructors

Constructor and Description
Divergence(DivergenceClass kind, String outputName, String detail)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
String	getDetail()
DivergenceClass	getKind()
String	getOutputName() May be null for FILTER/JOIN row-influence divergences.
int	hashCode()
String	toString()

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

QUERY_WIDE

public static final String QUERY_WIDE

Reserved string used by DivergenceClass.UNSUPPORTED_BY_IR/_DLINEAGE.

See Also:

Constant Field Values

DETAIL_OUTPUT_PRESENT

public static final String DETAIL_OUTPUT_PRESENT

Detail value used by the output-presence pass.

See Also:

Constant Field Values

ORDER

public static final Comparator<Divergence> ORDER

Stable ordering for deterministic JSON output.

Constructor Detail

Divergence

public Divergence(DivergenceClass kind,
                  String outputName,
                  String detail)

Method Detail

getKind

public DivergenceClass getKind()

getOutputName

public String getOutputName()

May be null for FILTER/JOIN row-influence divergences.

getDetail

public String getDetail()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object