ShowCreateDbStmt.java

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// to you under the Apache License, Version 2.0 (the
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// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.analysis;

import org.apache.doris.catalog.Column;
import org.apache.doris.catalog.Env;
import org.apache.doris.catalog.ScalarType;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.common.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.common.UserException;
import org.apache.doris.mysql.privilege.PrivPredicate;
import org.apache.doris.qe.ConnectContext;
import org.apache.doris.qe.ShowResultSetMetaData;

import com.google.common.base.Strings;

// Show create database statement
//  Syntax:
//      SHOW CREATE DATABASE db
public class ShowCreateDbStmt extends ShowStmt implements NotFallbackInParser {
    private static final ShowResultSetMetaData META_DATA =
            ShowResultSetMetaData.builder()
                    .addColumn(new Column("Database", ScalarType.createVarchar(20)))
                    .addColumn(new Column("Create Database", ScalarType.createVarchar(30)))
                    .build();

    private String ctl;
    private String db;

    public ShowCreateDbStmt(DbName db) {
        this.ctl = db.getCtl();
        this.db = db.getDb();
    }

    public String getDb() {
        return db;
    }

    public String getCtl() {
        return ctl;
    }

    @Override
    public void analyze(Analyzer analyzer) throws AnalysisException, UserException {
        super.analyze(analyzer);
        if (Strings.isNullOrEmpty(ctl)) {
            ctl = Env.getCurrentEnv().getCurrentCatalog().getName();
        }
        if (Strings.isNullOrEmpty(db)) {
            ErrorReport.reportAnalysisException(ErrorCode.ERR_WRONG_DB_NAME, db);
        }

        if (!Env.getCurrentEnv().getAccessManager().checkDbPriv(ConnectContext.get(), ctl, db,
                PrivPredicate.SHOW)) {
            ErrorReport.reportAnalysisException(ErrorCode.ERR_DB_ACCESS_DENIED_ERROR,
                    PrivPredicate.SHOW.getPrivs().toString(), db);
        }
    }

    @Override
    public String toSql() {
        return "SHOW CREATE DATABASE `" + db + "`";
    }

    @Override
    public String toString() {
        return toSql();
    }

    @Override
    public ShowResultSetMetaData getMetaData() {
        return META_DATA;
    }
}