ShowSmallFilesStmt.java

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// to you under the Apache License, Version 2.0 (the
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//
//   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.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.common.UserException;
import org.apache.doris.datasource.InternalCatalog;
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;

public class ShowSmallFilesStmt extends ShowStmt implements NotFallbackInParser {
    private static final ShowResultSetMetaData META_DATA =
            ShowResultSetMetaData.builder()
                    .addColumn(new Column("Id", ScalarType.createVarchar(32)))
                    .addColumn(new Column("DbName", ScalarType.createVarchar(256)))
                    .addColumn(new Column("Catalog", ScalarType.createVarchar(32)))
                    .addColumn(new Column("FileName", ScalarType.createVarchar(16)))
                    .addColumn(new Column("FileSize", ScalarType.createVarchar(16)))
                    .addColumn(new Column("IsContent", ScalarType.createVarchar(16)))
                    .addColumn(new Column("MD5", ScalarType.createVarchar(16)))
                    .build();

    private String dbName;

    public ShowSmallFilesStmt(String dbName) {
        this.dbName = dbName;
    }

    public String getDbName() {
        return dbName;
    }

    @Override
    public void analyze(Analyzer analyzer) throws UserException {
        super.analyze(analyzer);
        if (Strings.isNullOrEmpty(dbName)) {
            dbName = analyzer.getDefaultDb();
            if (Strings.isNullOrEmpty(dbName)) {
                ErrorReport.reportAnalysisException(ErrorCode.ERR_NO_DB_ERROR);
            }
        }

        if (!Env.getCurrentEnv().getAccessManager()
                .checkDbPriv(ConnectContext.get(), InternalCatalog.INTERNAL_CATALOG_NAME, dbName, PrivPredicate.SHOW)) {
            ErrorReport.reportAnalysisException(
                    ErrorCode.ERR_DBACCESS_DENIED_ERROR, ConnectContext.get().getQualifiedUser(), dbName);
        }
    }

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