IcebergMergeExecutor.java

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package org.apache.doris.nereids.trees.plans.commands.insert;

import org.apache.doris.common.UserException;
import org.apache.doris.datasource.NameMapping;
import org.apache.doris.datasource.iceberg.IcebergExternalTable;
import org.apache.doris.datasource.iceberg.IcebergTransaction;
import org.apache.doris.nereids.NereidsPlanner;
import org.apache.doris.nereids.trees.plans.physical.PhysicalSink;
import org.apache.doris.planner.DataSink;
import org.apache.doris.planner.PlanFragment;
import org.apache.doris.qe.ConnectContext;
import org.apache.doris.transaction.TransactionType;

import org.apache.iceberg.expressions.Expression;

import java.util.Optional;

/**
 * Executor for Iceberg UPDATE merge operations (single scan + merge sink).
 */
public class IcebergMergeExecutor extends BaseExternalTableInsertExecutor {
    private Optional<Expression> conflictDetectionFilter = Optional.empty();

    public IcebergMergeExecutor(ConnectContext ctx, IcebergExternalTable table,
            String labelName, NereidsPlanner planner,
            boolean emptyInsert, long jobId) {
        super(ctx, table, labelName, planner, Optional.empty(), emptyInsert, jobId);
    }

    public void finalizeSinkForMerge(PlanFragment fragment, DataSink sink, PhysicalSink<?> physicalSink) {
        super.finalizeSink(fragment, sink, physicalSink);
    }

    public void setConflictDetectionFilter(Optional<Expression> filter) {
        conflictDetectionFilter = filter == null ? Optional.empty() : filter;
    }

    @Override
    protected void beforeExec() throws UserException {
        IcebergTransaction transaction = (IcebergTransaction) transactionManager.getTransaction(txnId);
        transaction.beginMerge((IcebergExternalTable) table);
        if (conflictDetectionFilter.isPresent()) {
            transaction.setConflictDetectionFilter(conflictDetectionFilter.get());
        } else {
            transaction.clearConflictDetectionFilter();
        }
    }

    @Override
    protected void doBeforeCommit() throws UserException {
        IcebergExternalTable dorisTable = (IcebergExternalTable) table;
        IcebergTransaction transaction = (IcebergTransaction) transactionManager.getTransaction(txnId);
        this.loadedRows = transaction.getUpdateCnt();

        NameMapping nameMapping = new NameMapping(
                dorisTable.getCatalog().getId(),
                dorisTable.getDbName(),
                dorisTable.getName(),
                dorisTable.getRemoteDbName(),
                dorisTable.getRemoteName());
        transaction.finishMerge(nameMapping);
    }

    @Override
    protected TransactionType transactionType() {
        return TransactionType.ICEBERG;
    }
}