ShowCreateMTMVStmt.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.MTMV;
import org.apache.doris.catalog.ScalarType;
import org.apache.doris.catalog.TableIf;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.common.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.mysql.privilege.PrivPredicate;
import org.apache.doris.qe.ConnectContext;
import org.apache.doris.qe.ShowResultSetMetaData;

// SHOW CREATE Materialized View statement.
public class ShowCreateMTMVStmt extends ShowStmt implements NotFallbackInParser {
    private static final ShowResultSetMetaData META_DATA =
            ShowResultSetMetaData.builder()
                    .addColumn(new Column("Materialized View", ScalarType.createVarchar(20)))
                    .addColumn(new Column("Create Materialized View", ScalarType.createVarchar(30)))
                    .build();

    private TableName tbl;

    public ShowCreateMTMVStmt(TableName tbl) {
        this.tbl = tbl;
    }


    public String getCtl() {
        return tbl.getCtl();
    }

    public String getDb() {
        return tbl.getDb();
    }

    public String getTable() {
        return tbl.getTbl();
    }

    @Override
    public void analyze(Analyzer analyzer) throws AnalysisException {
        if (tbl == null) {
            ErrorReport.reportAnalysisException(ErrorCode.ERR_NO_TABLES_USED);
        }
        tbl.analyze(analyzer);

        TableIf tableIf = Env.getCurrentEnv().getCatalogMgr()
                .getCatalogOrAnalysisException(tbl.getCtl())
                .getDbOrAnalysisException(tbl.getDb()).getTableOrAnalysisException(tbl.getTbl());

        if (!(tableIf instanceof MTMV)) {
            ErrorReport.reportAnalysisException("only support async materialized view");
        }

        if (!Env.getCurrentEnv().getAccessManager().checkTblPriv(ConnectContext.get(), tbl.getCtl(), tbl.getDb(),
                tbl.getTbl(), PrivPredicate.SHOW)) {
            ErrorReport.reportAnalysisException(ErrorCode.ERR_TABLE_ACCESS_DENIED_ERROR,
                    PrivPredicate.SHOW.getPrivs().toString(), getTable());
        }
    }

    @Override
    public String toSql() {
        return "SHOW CREATE MATERIALIZED VIEW " + tbl;
    }

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

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