AlterCatalogCommentCommand.java

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//
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package org.apache.doris.nereids.trees.plans.commands;

import org.apache.doris.catalog.Env;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.nereids.trees.plans.PlanType;
import org.apache.doris.nereids.trees.plans.visitor.PlanVisitor;
import org.apache.doris.qe.ConnectContext;
import org.apache.doris.qe.StmtExecutor;

import com.google.common.base.Strings;

import java.util.Objects;

/**
 * Represents the command for ALTER CATALOG MODIFY COMMENT.
 */
public class AlterCatalogCommentCommand extends AlterCatalogCommand {

    private final String comment;

    public AlterCatalogCommentCommand(String catalogName, String comment) {
        super(PlanType.ALTER_CATALOG_COMMENT_COMMAND, catalogName);
        this.comment = Objects.requireNonNull(comment, "Comment cannot be null");
    }

    @Override
    public void doRun(ConnectContext ctx, StmtExecutor executor) throws Exception {
        validate(ctx);
        // Validate the catalog name
        if (Strings.isNullOrEmpty(comment)) {
            throw new AnalysisException("New comment is not set.");
        }

        // Fetch and modify the catalog's comment
        Env.getCurrentEnv().getCatalogMgr().alterCatalogComment(catalogName, comment);
    }

    @Override
    public <R, C> R accept(PlanVisitor<R, C> visitor, C context) {
        return visitor.visitAlterCatalogCommentCommand(this, context);
    }
}