gudusoft.gsqlparser.resolver2.namespace

Enum MetadataState

Object

Enum<MetadataState>

gudusoft.gsqlparser.resolver2.namespace.MetadataState

All Implemented Interfaces:

Serializable, Comparable<MetadataState>

public enum MetadataState
extends Enum<MetadataState>

Tri-value describing whether a namespace's column metadata is authoritative.

Slice S4 (plan §5.5) introduces this enum so the binding post-pass can distinguish "catalog says column missing" (authoritative) from "metadata is unavailable" (silent). Without this distinction strict-mode UNKNOWN_COLUMN would fire on every unbacked table — the largest false-positive risk for the binding feature.

Returned by INamespace.getMetadataState().

• FOUND — namespace has authoritative column metadata. A column absent from this namespace is genuinely missing and may emit UNKNOWN_COLUMN (see plan §5.4 frozen codes).
• NOT_FOUND_IN_CATALOG — namespace consulted a real catalog and the table itself is absent. Drives strict-mode UNKNOWN_TABLE (S6); never causes UNKNOWN_COLUMN.
• METADATA_UNAVAILABLE — no authoritative source: no TSQLEnv, an empty env, a table found but with no expanded columns (Q8 view-without-columns), or a derived namespace whose inner projection is unknown. Strict mode may emit CATALOG_METADATA_UNAVAILABLE (WARNING); non-strict is silent. Never causes UNKNOWN_COLUMN.

Enum Constant Summary

Enum Constants

Enum Constant and Description
FOUND Authoritative metadata is present; absent columns are genuinely missing.
METADATA_UNAVAILABLE No authoritative metadata is available.
NOT_FOUND_IN_CATALOG The catalog consulted does not contain the table.

Method Summary

Modifier and Type	Method and Description
static MetadataState	valueOf(String name) Returns the enum constant of this type with the specified name.
static MetadataState[]	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

FOUND

public static final MetadataState FOUND

Authoritative metadata is present; absent columns are genuinely missing.

NOT_FOUND_IN_CATALOG

public static final MetadataState NOT_FOUND_IN_CATALOG

The catalog consulted does not contain the table. Drives strict-mode UNKNOWN_TABLE but never UNKNOWN_COLUMN.

METADATA_UNAVAILABLE

public static final MetadataState METADATA_UNAVAILABLE

No authoritative metadata is available. Strict mode may emit CATALOG_METADATA_UNAVAILABLE; non-strict is silent.

Method Detail

values

public static MetadataState[] 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 (MetadataState c : MetadataState.values())
    System.out.println(c);

Returns:

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

valueOf

public static MetadataState 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