Source:
public void testInformationSchemaPredicatePushdown() { CatalogManager catalogManager = new CatalogManager(); catalogManager.registerCatalog(createTestCatalog("test_catalog", new TestConnectorMetadata())); TransactionManager transactionManager = createTestTransactionManager(catalogManager); Metadata metadata = new MetadataManager( new FeaturesConfig(), new TypeRegistry(), new BlockEncodingManager(new TypeRegistry()), new SessionPropertyManager(), new SchemaPropertyManager(), new TablePropertyManager(), new ColumnPropertyManager(), transactionManager); TransactionId transactionId = transactionManager.beginTransaction(false); Session session = testSessionBuilder() .setCatalog("test_catalog") .setSchema("information_schema") .setClientCapabilities(stream(ClientCapabilities.values()) .map(ClientCapabilities::toString) .collect(toImmutableSet())) .setTransactionId(transactionId) .build(); ImmutableMap.Builder<ColumnHandle, Domain> domains = new ImmutableMap.Builder<>(); domains.put(new InformationSchemaColumnHandle("table_schema"), Domain.singleValue(VARCHAR, Slices.utf8Slice("test_schema"))); domains.put(new InformationSchemaColumnHandle("table_name"), Domain.singleValue(VARCHAR, Slices.utf8Slice("test_view"))); Constraint<ColumnHandle> constraint = new Constraint<>(TupleDomain.withColumnDomains(domains.build())); Set<ColumnHandle> desiredColumns = ImmutableSet.of(new InformationSchemaColumnHandle("table_schema"), new InformationSchemaColumnHandle("view_definition"), new InformationSchemaColumnHandle("table_name")); InformationSchemaMetadata informationSchemaMetadata = new InformationSchemaMetadata("test_catalog", metadata); List<ConnectorTableLayoutResult> layoutResults = informationSchemaMetadata.getTableLayouts(session.toConnectorSession(), new InformationSchemaTableHandle("test_catalog", "information_schema", "views"), constraint, Optional.of(desiredColumns)); assertEquals(layoutResults.size(), 1); ConnectorTableLayoutHandle handle = layoutResults.get(0).getTableLayout().getHandle(); assertTrue(handle instanceof InformationSchemaTableLayoutHandle); InformationSchemaTableLayoutHandle tableHandle = (InformationSchemaTableLayoutHandle) handle; assertEquals(tableHandle.getPrefixes(), ImmutableSet.of(new QualifiedTablePrefix("test_catalog", "test_schema", "test_view"))); }

Target:
public void testInformationSchemaPredicatePushdown() { TransactionId transactionId = transactionManager.beginTransaction(false); ImmutableMap.Builder<ColumnHandle, Domain> domains = new ImmutableMap.Builder<>(); domains.put(new InformationSchemaColumnHandle("table_schema"), Domain.singleValue(VARCHAR, Slices.utf8Slice("test_schema"))); domains.put(new InformationSchemaColumnHandle("table_name"), Domain.singleValue(VARCHAR, Slices.utf8Slice("test_view"))); Constraint<ColumnHandle> constraint = new Constraint<>(TupleDomain.withColumnDomains(domains.build())); InformationSchemaMetadata informationSchemaMetadata = new InformationSchemaMetadata("test_catalog", metadata); List<ConnectorTableLayoutResult> layoutResults = informationSchemaMetadata.getTableLayouts( createNewSession(transactionId), new InformationSchemaTableHandle("test_catalog", "information_schema", "views"), constraint, Optional.empty()); assertEquals(layoutResults.size(), 1); ConnectorTableLayoutHandle handle = layoutResults.get(0).getTableLayout().getHandle(); assertTrue(handle instanceof InformationSchemaTableLayoutHandle); InformationSchemaTableLayoutHandle tableHandle = (InformationSchemaTableLayoutHandle) handle; assertEquals(tableHandle.getPrefixes(), ImmutableSet.of(new QualifiedTablePrefix("test_catalog", "test_schema", "test_view"))); }