IcebergRowLevelDmlTransform.java
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package org.apache.doris.nereids.trees.plans.commands;
import org.apache.doris.catalog.Column;
import org.apache.doris.catalog.TableIf;
import org.apache.doris.connector.api.ConnectorMetadata;
import org.apache.doris.connector.api.ConnectorSession;
import org.apache.doris.connector.api.DorisConnectorException;
import org.apache.doris.connector.api.handle.ConnectorTableHandle;
import org.apache.doris.connector.api.handle.WriteOperation;
import org.apache.doris.connector.api.pushdown.ConnectorPredicate;
import org.apache.doris.datasource.ExternalTable;
import org.apache.doris.datasource.PluginDrivenExternalCatalog;
import org.apache.doris.datasource.PluginDrivenExternalTable;
import org.apache.doris.datasource.WriteConstraintExtractor;
import org.apache.doris.nereids.NereidsPlanner;
import org.apache.doris.nereids.exceptions.AnalysisException;
import org.apache.doris.nereids.trees.expressions.SlotReference;
import org.apache.doris.nereids.trees.plans.Plan;
import org.apache.doris.nereids.trees.plans.commands.insert.BaseExternalTableInsertExecutor;
import org.apache.doris.nereids.trees.plans.commands.insert.PluginDrivenInsertExecutor;
import org.apache.doris.nereids.trees.plans.logical.LogicalPlan;
import org.apache.doris.nereids.trees.plans.physical.PhysicalIcebergDeleteSink;
import org.apache.doris.nereids.trees.plans.physical.PhysicalIcebergMergeSink;
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 java.util.Optional;
import java.util.Set;
import java.util.function.Predicate;
/**
* Iceberg {@link RowLevelDmlTransform}: routes {@code DELETE}/{@code UPDATE}/{@code MERGE INTO} on iceberg
* tables through the generic {@link RowLevelDmlCommand} shell.
*
* <p>Per the T07c "delegated synthesis" decision, the iceberg plan-synthesis algebra is <b>not</b> relocated:
* {@link #synthesize} constructs the corresponding {@code Iceberg*Command} (same package) and calls its
* (now package-visible) synthesis method, so the synthesized {@code LogicalIceberg{Delete,Merge}Sink} tree is
* byte-identical to legacy. The per-executor-only bits (conflict-filter stash, finalize) are routed here via
* {@code instanceof}-free op switches; the O5-2 exclusion predicate mirrors legacy
* {@code IcebergConflictDetectionFilterUtils} (note the {@code equalsIgnoreCase} vs {@code equals} asymmetry).</p>
*/
public class IcebergRowLevelDmlTransform implements RowLevelDmlTransform {
/**
* Slots excluded from the O5-2 target-only write constraint: the synthetic {@code $row_id} column and
* iceberg metadata columns. Mirrors legacy {@code IcebergConflictDetectionFilterUtils.isTargetOnlyPredicate}
* exactly ��� keep the {@code equalsIgnoreCase} (rowid) vs {@code equals} (metadata) asymmetry.
*/
private static final Predicate<SlotReference> ICEBERG_EXCLUSION =
slot -> Column.ICEBERG_ROWID_COL.equalsIgnoreCase(slot.getName())
|| IcebergMetadataColumn.isMetadataColumn(slot.getName());
@Override
public boolean handles(TableIf table) {
return table instanceof PluginDrivenExternalTable
&& pluginConnectorSupportsRowLevelDml((PluginDrivenExternalTable) table);
}
/**
* A plugin-driven (SPI connector) table is routed through the iceberg row-level DML synthesis only if
* its connector declares row-level DML support ({@code supportsDelete()} or {@code supportsMerge()}).
* Mirrors the connector-capability probe in
* {@code InsertOverwriteTableCommand.pluginConnectorSupportsInsertOverwrite}.
*
* <p>This gate is op-agnostic by design: {@code RowLevelDmlRegistry.find} carries no operation, so it
* admits "supports any row-level DML"; per-op validity (e.g. UPDATE against a delete-only connector) is
* enforced later in {@link #checkMode}.</p>
*
* <p>Today only the iceberg connector declares these capabilities (every other SPI connector inherits
* the {@code ConnectorWriteOps} default {@code false}).</p>
*/
private static boolean pluginConnectorSupportsRowLevelDml(PluginDrivenExternalTable table) {
PluginDrivenExternalCatalog catalog = (PluginDrivenExternalCatalog) table.getCatalog();
Set<WriteOperation> ops = catalog.getConnector().supportedWriteOperations();
return ops.contains(WriteOperation.DELETE) || ops.contains(WriteOperation.MERGE);
}
@Override
public void checkMode(TableIf table, RowLevelDmlOp op) {
checkPluginMode((PluginDrivenExternalTable) table, op);
}
/**
* {@link #checkMode} body: route the copy-on-write rejection through the connector's neutral
* {@code validateRowLevelDmlMode} SPI, so the iceberg property knowledge and the message stay in the
* connector. A connector {@link DorisConnectorException} is surfaced as the analysis-time
* {@link AnalysisException} the legacy native path threw, preserving the user-facing message and the
* exception type.
*/
private static void checkPluginMode(PluginDrivenExternalTable table, RowLevelDmlOp op) {
PluginDrivenExternalCatalog catalog = (PluginDrivenExternalCatalog) table.getCatalog();
ConnectorSession session = catalog.buildConnectorSession();
ConnectorMetadata metadata = catalog.getConnector().getMetadata(session);
ConnectorTableHandle handle = metadata.getTableHandle(
session, table.getRemoteDbName(), table.getRemoteName())
.orElseThrow(() -> new AnalysisException("Table not found: "
+ table.getRemoteDbName() + "." + table.getRemoteName()
+ " in catalog " + catalog.getName()));
try {
metadata.validateRowLevelDmlMode(session, handle, toWriteOperation(op));
} catch (DorisConnectorException e) {
throw new AnalysisException(e.getMessage(), e);
}
}
private static WriteOperation toWriteOperation(RowLevelDmlOp op) {
switch (op) {
case DELETE:
return WriteOperation.DELETE;
case UPDATE:
return WriteOperation.UPDATE;
default:
return WriteOperation.MERGE;
}
}
@Override
public LogicalPlan synthesize(ConnectContext ctx, RowLevelDmlArgs args, RowLevelDmlOp op) {
ExternalTable icebergTable = (ExternalTable) args.getTable();
switch (op) {
case DELETE:
return new IcebergDeleteCommand(args.getNameParts(), args.getTableAlias(), args.isTempPart(),
args.getPartitions(), args.getLogicalQuery(), args.getDeleteCtx())
.completeQueryPlan(ctx, args.getLogicalQuery(), icebergTable);
case UPDATE:
return new IcebergUpdateCommand(args.getNameParts(), args.getTableAlias(), args.getAssignments(),
args.getLogicalQuery(), args.getDeleteCtx())
.buildMergePlan(ctx, args.getLogicalQuery(), args.getAssignments(), icebergTable);
default:
return new IcebergMergeCommand(args.getTargetNameParts(), args.getTargetAlias(), args.getCte(),
args.getSource(), args.getOnClause(), args.getMatchedClauses(), args.getNotMatchedClauses())
.buildMergePlan(ctx, icebergTable);
}
}
@Override
public BaseExternalTableInsertExecutor newExecutor(ConnectContext ctx, TableIf table, String label,
NereidsPlanner planner, boolean emptyInsert, RowLevelDmlOp op) {
// The connector-driven executor opens an SPI ConnectorTransaction (non-null), which activates the
// neutral O5-2 conflict path in RowLevelDmlCommand.applyWriteConstraintIfPresent. The op rides the
// sink's WriteOperation (set by the translator), so one executor serves DELETE/MERGE; no
// InsertCommandContext is needed for a row-level write.
return new PluginDrivenInsertExecutor(ctx, (PluginDrivenExternalTable) table, label, planner,
Optional.empty(), emptyInsert, -1L);
}
@Override
public PhysicalSink<?> requirePhysicalSink(NereidsPlanner planner, RowLevelDmlOp op) {
Optional<PhysicalSink<?>> plan = planner.getPhysicalPlan()
.<PhysicalSink<?>>collect(PhysicalSink.class::isInstance).stream().findAny();
switch (op) {
case DELETE:
if (!plan.isPresent()) {
throw new AnalysisException("DELETE command must contain target table");
}
if (!(plan.get() instanceof PhysicalIcebergDeleteSink)) {
throw new AnalysisException("DELETE plan must use Iceberg delete sink");
}
return plan.get();
case UPDATE:
if (!plan.isPresent()) {
throw new AnalysisException("UPDATE command must contain target table");
}
if (!(plan.get() instanceof PhysicalIcebergMergeSink)) {
throw new AnalysisException("UPDATE merge plan must use Iceberg merge sink");
}
return plan.get();
default:
if (!plan.isPresent()) {
throw new AnalysisException("MERGE INTO command must contain target table");
}
if (!(plan.get() instanceof PhysicalIcebergMergeSink)) {
throw new AnalysisException("MERGE INTO plan must use Iceberg merge sink");
}
return plan.get();
}
}
@Override
public String labelPrefix(RowLevelDmlOp op) {
switch (op) {
case DELETE:
return "iceberg_delete";
case UPDATE:
return "iceberg_update_merge";
default:
return "iceberg_merge_into";
}
}
@Override
public void setupConflictDetection(BaseExternalTableInsertExecutor executor, Plan analyzedPlan, TableIf table,
RowLevelDmlOp op) {
// No-op: the conflict filter is supplied through the neutral SPI path
// (RowLevelDmlCommand.applyWriteConstraintIfPresent -> extractWriteConstraint ->
// ConnectorTransaction.applyWriteConstraint), converted to a native iceberg Expression lazily at
// commit. Running ONLY the SPI path avoids double-filtering; the SPI converter is byte-verified
// equivalent to the retired native filter builder, the residual divergence only widening the
// filter -> at worst a harmless extra OCC retry (see [DEC-S5]).
}
@Override
public void finalizeSink(BaseExternalTableInsertExecutor executor, RowLevelDmlOp op, PlanFragment fragment,
DataSink sink, PhysicalSink<?> physicalSink) {
// Finalize through the connector's single transaction model (bind tx -> bindDataSink -> planWrite),
// which supplies rewritable_delete_file_sets itself via the scan-time stash -> exactly one finalize,
// no double-overlay.
((PluginDrivenInsertExecutor) executor).finalizeRowLevelDmlSink(fragment, sink, physicalSink);
}
@Override
public Optional<ConnectorPredicate> extractWriteConstraint(Plan analyzedPlan, TableIf table) {
return WriteConstraintExtractor.extract(analyzedPlan, table.getId(), ICEBERG_EXCLUSION);
}
}