gudusoft.gsqlparser.stmt.snowflake

Enum SnowflakeUseTarget

Object

Enum<SnowflakeUseTarget>

gudusoft.gsqlparser.stmt.snowflake.SnowflakeUseTarget

All Implemented Interfaces:

Serializable, Comparable<SnowflakeUseTarget>

public enum SnowflakeUseTarget
extends Enum<SnowflakeUseTarget>

Which object a keyword-less Snowflake USE switches — MantisBT 4677.

Snowflake makes the object keyword optional on both sides, so USE a and USE a.b must be told apart without one. The rule comes from the USE SCHEMA reference: "The SCHEMA keyword is optional if the schema name is fully qualified (in the form of db_name.schema_name)". Combined with USE DATABASE's own optional keyword:

• unqualified name → DATABASE
• qualified name → SCHEMA

Why this lives in one class. Two independent code paths need the answer: the statement splitter picks the statement class before parsing, and the grammar action stamps the EDbObjectType that drives TUseDatabase.isSchema() and resolver2's DatabaseContextTracker. Two separate implementations drifted apart twice during this fix (once via a part-count that is never populated, once on the IDENTIFIER(...) form), and a disagreement is invisible through the public API — the class says one thing, the node says another, and nothing reports it. Both callers now pass the same evidence (the token list plus the position of the USE token) to of(gudusoft.gsqlparser.TSourceTokenList, int), so there is exactly one rule.

Enum Constant Summary

Enum Constants

Enum Constant and Description
DATABASE
SCHEMA

Method Summary

Modifier and Type	Method and Description
static SnowflakeUseTarget	of(TSourceTokenList tokens, int usePos) Classify a keyword-less USE.
static SnowflakeUseTarget	valueOf(String name) Returns the enum constant of this type with the specified name.
static SnowflakeUseTarget[]	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

DATABASE

public static final SnowflakeUseTarget DATABASE

SCHEMA

public static final SnowflakeUseTarget SCHEMA

Method Detail

values

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

Returns:

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

valueOf

public static SnowflakeUseTarget 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

of

public static SnowflakeUseTarget of(TSourceTokenList tokens,
                                    int usePos)

Classify a keyword-less USE. Callers must have already ruled out the explicit forms (USE DATABASE/SCHEMA/ROLE/WAREHOUSE ...).

Parameters:

tokens - the statement's token list

usePos - position of the USE token within tokens

Returns:

SCHEMA when the name is qualified, else DATABASE