Package dev.frostlake.executor.commands

Class CommentCommandHandler

java.lang.Object

dev.frostlake.executor.commands.CommentCommandHandler

All Implemented Interfaces:

CommandHandler

public class CommentCommandHandler
extends Object
implements CommandHandler

Handles COMMENT ON <object-type> … statements, extracted verbatim from SQLCommandVisitor.visitCommentStatement(dev.frostlake.parser.FrostlakeParser.CommentStatementContext). Catalog lookups run against the injected Catalog; parse-text extraction (getText, extractStringLiteral) and the shared engine helpers (parseDataType, resolveCurrentSchema) are reached through the visitor back-reference so their exact original behavior is preserved.

Constructor Summary

Constructors

Constructor	Description
CommentCommandHandler(Catalog catalog, QueryExecutor queryExecutor, SQLCommandVisitor visitor)

Method Summary

Modifier and Type	Method	Description
Catalog	getCatalog()	Get catalog instance
QueryExecutor	getQueryExecutor()	Get query executor instance
Object	handle(FrostlakeParser.CommentStatementContext ctx)

Methods inherited from class java.lang.Object

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

Methods inherited from interface dev.frostlake.executor.commands.CommandHandler

extractComment, extractComment, getText, getText, qualifiedNameParts

Constructor Details

CommentCommandHandler

public CommentCommandHandler(Catalog catalog,
 QueryExecutor queryExecutor,
 SQLCommandVisitor visitor)

Method Details

getCatalog

public Catalog getCatalog()

Description copied from interface: CommandHandler

Get catalog instance

Specified by:

getCatalog in interface CommandHandler

Returns:

the engine's metastore catalog, holding the objects this handler reads and mutates

getQueryExecutor

public QueryExecutor getQueryExecutor()

Description copied from interface: CommandHandler

Get query executor instance

Specified by:

getQueryExecutor in interface CommandHandler

Returns:

the engine's query executor, for handlers that run nested queries or need session state

handle

public Object handle(FrostlakeParser.CommentStatementContext ctx)