gudusoft.gsqlparser.dlineage.dataflow.model

Class ResultSetClassifier

Object

gudusoft.gsqlparser.dlineage.dataflow.model.ResultSetClassifier

public final class ResultSetClassifier
extends Object

The kind of a runtime result set, as a pure function of its runtime class, the parse tree node it is attached to and its explicit descriptors (plan docs/designs/data-lineage/09-sqllr-v2-runtime-driven-coverage-plan-zh.md, Section 3.2).

DataFlowAnalyzer.getResultSetName decides the same kinds in the same branch order, but it also names the result set: it allocates display counters (DISPLAY_ID), fills the name cache (DISPLAY_NAME) and sets the target flag from the display options. That method stays as it is, for the legacy output. The SQL-LR producer classifies with this class only: it allocates nothing, caches nothing, never sets a flag and never resolves a name, so classifying cannot change a legacy byte or a display number.

Internal API of the SQL-LR producer.

Since:

4.2.17

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ResultSetClassifier.Kind The kinds, in the order getResultSetName tests them.
static class	ResultSetClassifier.Result A classification: the kind and the descriptors that refine it.

Method Summary

Modifier and Type	Method and Description
static ResultSetClassifier.Result	classify(ResultSet rs) Classifies a result set; reads only, in getResultSetName's branch order.

Methods inherited from class Object

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

Method Detail

classify

public static ResultSetClassifier.Result classify(ResultSet rs)

Classifies a result set; reads only, in getResultSetName's branch order.