gudusoft.gsqlparser.lineage.v2.shape

Class ShapeObject

Object

gudusoft.gsqlparser.lineage.v2.shape.ShapeObject

Direct Known Subclasses:

AbstractRelationship, AmbiguousColumnSource, ColumnSource, CTENamespace, INamespaceImpl, LateralViewNamespace, LiveObject, PivotNamespace, RelationshipElementImpl, ResolutionResult, ResultColumn, ResultSet, SqllrObservations, SqllrObservations.DerivedRecord, SqllrObservations.ElementRecord, SqllrObservations.FrozenRelation, SqllrObservations.ReferenceRecord, SqllrObservations.StatementRecord, SqllrObservations.UnitRecord, SubqueryNamespace, Table, TableColumn, TableNamespace, TParseTreeNode, TSourceToken, TSourceTokenList, TSQLCatalog, TSQLColumn, TSQLEnv, TSQLSchema, TSQLSchemaObject, TSyntaxError, UnnestNamespace, ValuesNamespace

public abstract class ShapeObject
extends Object

The base of every mirror of the shape layer (plan docs/designs/data-lineage/09-sqllr-v2-runtime-driven- coverage-plan-zh.md, slice 1b): an immutable value copy of one live object the SQL-LR producer reads (a parse tree node, a token, a runtime model object, a resolver result, a catalog object, a recorder record), taken when the analysis froze. A mirror keeps the simple name and the getters of its live class, so producer code reads a mirror as it read the live object, and holds no live object: references to other mirrors are handles into its Shape.

Mirrors are compared by identity, as the live objects were: one mirror per live object.

Internal API of the SQL-LR producer.

Since:

4.2.17

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ShapeObject(Shape shape, int handle)

Method Summary

Modifier and Type	Method and Description
String	liveClassName() The name of the live object's class.
String	liveSimpleName() The simple name of the live object's class (a mirror stands for its nearest mirrored class).
Shape	shape() The shape the mirror belongs to.
int	shapeHandle() The handle of the mirror in its shape.
protected <T> T	slot(Object slot) Resolves a slot: a value, a handle to another mirror, a list of handles, or a getter that threw.
String	toString() A mirror has text only where the live object's rendering was taken (names, literals, type names, leaf expressions; their mirrors override this): any other toString(), including an implicit one in a string concatenation, would print the mirror instead of what the live object printed, so it fails.

Methods inherited from class Object

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

Constructor Detail

ShapeObject

protected ShapeObject(Shape shape,
                      int handle)

Method Detail

shapeHandle

public final int shapeHandle()

The handle of the mirror in its shape.

shape

public final Shape shape()

The shape the mirror belongs to.

liveSimpleName

public final String liveSimpleName()

The simple name of the live object's class (a mirror stands for its nearest mirrored class).

liveClassName

public final String liveClassName()

The name of the live object's class.

toString

public String toString()

A mirror has text only where the live object's rendering was taken (names, literals, type names, leaf expressions; their mirrors override this): any other toString(), including an implicit one in a string concatenation, would print the mirror instead of what the live object printed, so it fails.

Overrides:

toString in class Object

slot

protected final <T> T slot(Object slot)

Resolves a slot: a value, a handle to another mirror, a list of handles, or a getter that threw.