private static RelNode toConvertibleRelRoot(SqlHandlerConfig config, final SqlNode validatedNode, boolean expand, RelTransformer relTransformer) { final Stopwatch stopwatch = Stopwatch.createStarted(); final RelRootPlus convertible = config.getConverter().toConvertibleRelRoot(validatedNode, expand); config.getObserver().planConvertedToRel(convertible.rel, stopwatch.elapsed(TimeUnit.MILLISECONDS)); final RelNode reduced = relTransformer.transform(transform(config, PlannerType.HEP, PlannerPhase.REDUCE_EXPRESSIONS, convertible.rel, convertible.rel.getTraitSet(), true)); config.getObserver().planSerializable(reduced); return reduced; }
public static RelRoot expandView(NamespaceKey path, final String viewOwner, final String queryString, final List<String> context, final SqlConverter sqlConverter) { ViewExpansionToken token = null; try { //RelDataType rowType = view.getRowType(cluster.getTypeFactory()); token = sqlConverter.getViewExpansionContext().reserveViewExpansionToken(viewOwner); final DremioCatalogReader catalog; if(viewOwner != null) { catalog = sqlConverter.getCatalogReader().withSchemaPathAndUser(viewOwner, context); } else { catalog = sqlConverter.getCatalogReader().withSchemaPath(context); } final SqlConverter newConverter = new SqlConverter(sqlConverter, catalog); final SqlNode parsedNode = newConverter.parse(queryString); final SqlNode validatedNode = newConverter.validate(parsedNode); final RelRootPlus root = newConverter.toConvertibleRelRoot(validatedNode, true); if(path == null) { return root; } // we need to make sure that if a inner expansion is context sensitive, we consider the current // expansion context sensitive even if it isn't locally. final boolean contextSensitive = root.isContextSensitive() || ExpansionNode.isContextSensitive(root.rel); return new RelRoot(ExpansionNode.wrap(path, root.rel, contextSensitive), root.validatedRowType, root.kind, root.fields, root.collation); } finally { if (token != null) { token.release(); } } }