gudusoft.gsqlparser.ir.semantic.joinanalysis

Enum ScopeKind

Object

Enum<ScopeKind>

gudusoft.gsqlparser.ir.semantic.joinanalysis.ScopeKind

All Implemented Interfaces:

Serializable, Comparable<ScopeKind>

public enum ScopeKind
extends Enum<ScopeKind>

Lexical role of a query block in a QueryBlockScope tree (GAP 4).

• MAIN — the top-level / outermost statement block (null parent).
• CTE — a WITH common-table-expression body.
• DERIVED_TABLE — a FROM-clause subquery (inline view).
• SCALAR_SUBQUERY — a subquery used as a scalar expression in the SELECT list / elsewhere.
• PREDICATE_SUBQUERY — a subquery inside a predicate (IN (...), EXISTS (...), etc.).
• SET_OPERATION_BRANCH — a branch of a UNION / INTERSECT / EXCEPT.
• UNKNOWN — an emission site not yet classified.

Introduced by join-analysis slice 162 (S1); populated in slice 170 (S9).

Enum Constant Summary

Enum Constants

Enum Constant and Description
CTE
DERIVED_TABLE
MAIN
PREDICATE_SUBQUERY
SCALAR_SUBQUERY
SET_OPERATION_BRANCH
UNKNOWN

Method Summary

Modifier and Type	Method and Description
static ScopeKind	valueOf(String name) Returns the enum constant of this type with the specified name.
static ScopeKind[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

MAIN

public static final ScopeKind MAIN

CTE

public static final ScopeKind CTE

DERIVED_TABLE

public static final ScopeKind DERIVED_TABLE

SCALAR_SUBQUERY

public static final ScopeKind SCALAR_SUBQUERY

PREDICATE_SUBQUERY

public static final ScopeKind PREDICATE_SUBQUERY

SET_OPERATION_BRANCH

public static final ScopeKind SET_OPERATION_BRANCH

UNKNOWN

public static final ScopeKind UNKNOWN

Method Detail

values

public static ScopeKind[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (ScopeKind c : ScopeKind.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static ScopeKind valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null