RefreshDictionaryCommand.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.nereids.trees.plans.commands.refresh;

import org.apache.doris.analysis.StmtType;
import org.apache.doris.catalog.Env;
import org.apache.doris.common.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.datasource.InternalCatalog;
import org.apache.doris.dictionary.Dictionary;
import org.apache.doris.dictionary.DictionaryManager;
import org.apache.doris.mysql.privilege.PrivPredicate;
import org.apache.doris.nereids.trees.plans.PlanType;
import org.apache.doris.nereids.trees.plans.commands.Command;
import org.apache.doris.nereids.trees.plans.commands.ForwardWithSync;
import org.apache.doris.nereids.trees.plans.visitor.PlanVisitor;
import org.apache.doris.qe.ConnectContext;
import org.apache.doris.qe.StmtExecutor;

/**
 * Refresh table command.
 */
public class RefreshDictionaryCommand extends Command implements ForwardWithSync {
    private String dbName;

    private String dictionaryName;

    public RefreshDictionaryCommand(String dbName, String dicName) {
        super(PlanType.REFRESH_DICTIONARY_COMMAND);
        this.dbName = dbName;
        this.dictionaryName = dicName;
    }

    @Override
    public void run(ConnectContext ctx, StmtExecutor executor) throws Exception {
        DictionaryManager dictionaryManager = ctx.getEnv().getDictionaryManager();
        String db = dbName == null ? ctx.getDatabase() : dbName;
        // The reload is an INSERT INTO the dictionary executed as the current user, which already
        // requires LOAD on the dictionary and SELECT on the source columns. Check LOAD up front,
        // like DROP DICTIONARY does, so a user without it can neither probe whether the dictionary
        // exists nor flip its status to LOADING before the INSERT is rejected.
        if (!Env.getCurrentEnv().getAccessManager().checkTblPriv(ctx, InternalCatalog.INTERNAL_CATALOG_NAME,
                db, dictionaryName, PrivPredicate.LOAD)) {
            ErrorReport.reportAnalysisException(ErrorCode.ERR_TABLEACCESS_DENIED_ERROR, "LOAD",
                    ctx.getQualifiedUser(), ctx.getRemoteIP(), db + ": " + dictionaryName);
        }
        Dictionary dictionary = dictionaryManager.getDictionary(db, dictionaryName);
        dictionaryManager.dataLoad(ctx, dictionary, false);
    }

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

    @Override
    public StmtType stmtType() {
        return StmtType.REFRESH;
    }
}