ModifyDistributionClause.java

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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.alter.AlterOpType;
import org.apache.doris.common.AnalysisException;

// clause which is used to modify the default bucket number of hash distribution
// MODIFY DISTRIBUTION DISTRIBUTED BY HASH('key') BUCKETS number;
public class ModifyDistributionClause extends AlterTableClause {

    private DistributionDesc distributionDesc;

    public DistributionDesc getDistributionDesc() {
        return distributionDesc;
    }

    public ModifyDistributionClause(DistributionDesc distributionDesc) {
        super(AlterOpType.MODIFY_DISTRIBUTION);
        this.distributionDesc = distributionDesc;
        this.needTableStable = false;
    }

    @Override
    public void analyze(Analyzer analyzer) throws AnalysisException {
    }

    @Override
    public boolean allowOpMTMV() {
        return true;
    }

    @Override
    public boolean needChangeMTMVState() {
        return false;
    }

    @Override
    public String toSql() {
        StringBuilder sb = new StringBuilder();
        sb.append("MODIFY DISTRIBUTION ");
        if (distributionDesc != null) {
            sb.append(distributionDesc.toSql());
        }
        return sb.toString();
    }

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