ShowTableCreationStmt.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.ScalarType;
import org.apache.doris.common.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.common.UserException;
import org.apache.doris.qe.ShowResultSetMetaData;

import com.google.common.base.Strings;

/**
 * Show table creation records in Iceberg database
 *
 * Syntax:
 *     SHOW TABLE CREATION [FROM db] [LIKE mask]
 */
public class ShowTableCreationStmt extends ShowStmt implements NotFallbackInParser {

    private static final ShowResultSetMetaData META_DATA =
            ShowResultSetMetaData.builder()
                    .addColumn(new Column("Database", ScalarType.createVarchar(20)))
                    .addColumn(new Column("Table", ScalarType.createVarchar(20)))
                    .addColumn(new Column("Status", ScalarType.createVarchar(10)))
                    .addColumn(new Column("Create Time", ScalarType.createVarchar(20)))
                    .addColumn(new Column("Error Msg", ScalarType.createVarchar(100)))
                    .build();

    private String dbName;
    private String wild;

    public ShowTableCreationStmt(String db, String wild) {
        this.dbName = db;
        this.wild = wild;
    }

    public String getDbName() {
        return dbName;
    }

    public String getWild() {
        return wild;
    }

    @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);
            }
        }
    }

    public boolean like(String str) {
        str = str.toLowerCase();
        return str.matches(wild.replace(".", "\\.").replace("?", ".").replace("%", ".*").toLowerCase());
    }

    @Override
    public String toSql() {
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.append("SHOW TABLE CREATION FROM ");
        if (!Strings.isNullOrEmpty(dbName)) {
            stringBuilder.append("`").append(dbName).append("` ");
        }

        if (!Strings.isNullOrEmpty(wild)) {
            stringBuilder.append("LIKE ").append("`").append(wild).append("`");
        }
        return stringBuilder.toString();
    }

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

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