Examples with ConnectorSession io.trino.spi.connector.ConnectorSession used on opensource projects

Example 91 with ConnectorSession

use of io.trino.spi.connector.ConnectorSession in project trino by trinodb.

the class TestInformationSchemaMetadata method testInformationSchemaPredicatePushdownWithoutSchemaPredicate.

@Test
public void testInformationSchemaPredicatePushdownWithoutSchemaPredicate() {
    TransactionId transactionId = transactionManager.beginTransaction(false);
    // predicate without schema predicates should cause schemas to be enumerated when table predicates are present
    ImmutableMap.Builder<ColumnHandle, Domain> domains = ImmutableMap.builder();
    domains.put(new InformationSchemaColumnHandle("table_name"), Domain.singleValue(VARCHAR, Slices.utf8Slice("test_view")));
    Constraint constraint = new Constraint(TupleDomain.withColumnDomains(domains.buildOrThrow()));
    ConnectorSession session = createNewSession(transactionId);
    ConnectorMetadata metadata = new InformationSchemaMetadata("test_catalog", this.metadata);
    InformationSchemaTableHandle tableHandle = (InformationSchemaTableHandle) metadata.getTableHandle(session, new SchemaTableName("information_schema", "views"));
    tableHandle = metadata.applyFilter(session, tableHandle, constraint).map(ConstraintApplicationResult::getHandle).map(InformationSchemaTableHandle.class::cast).orElseThrow(AssertionError::new);
    // filter blindly applies filter to all visible schemas, so information_schema must be included
    assertEquals(tableHandle.getPrefixes(), ImmutableSet.of(new QualifiedTablePrefix("test_catalog", "test_schema", "test_view"), new QualifiedTablePrefix("test_catalog", "information_schema", "test_view")));
}

Example 92 with ConnectorSession

use of io.trino.spi.connector.ConnectorSession in project trino by trinodb.

the class TestDefaultJdbcMetadata method testAggregationPushdownForTableHandle.

@Test
public void testAggregationPushdownForTableHandle() {
    ConnectorSession session = TestingConnectorSession.builder().setPropertyMetadata(new JdbcMetadataSessionProperties(new JdbcMetadataConfig().setAggregationPushdownEnabled(true), Optional.empty()).getSessionProperties()).build();
    ColumnHandle groupByColumn = metadata.getColumnHandles(session, tableHandle).get("text");
    Function<ConnectorTableHandle, Optional<AggregationApplicationResult<ConnectorTableHandle>>> applyAggregation = handle -> metadata.applyAggregation(session, handle, ImmutableList.of(new AggregateFunction("count", BIGINT, List.of(), List.of(), false, Optional.empty())), ImmutableMap.of(), ImmutableList.of(ImmutableList.of(groupByColumn)));
    ConnectorTableHandle baseTableHandle = metadata.getTableHandle(session, new SchemaTableName("example", "numbers"));
    Optional<AggregationApplicationResult<ConnectorTableHandle>> aggregationResult = applyAggregation.apply(baseTableHandle);
    assertThat(aggregationResult).isPresent();
    SchemaTableName noAggregationPushdownTable = new SchemaTableName("example", "no_aggregation_pushdown");
    metadata.createTable(SESSION, new ConnectorTableMetadata(noAggregationPushdownTable, ImmutableList.of(new ColumnMetadata("text", VARCHAR))), false);
    ConnectorTableHandle noAggregationPushdownTableHandle = metadata.getTableHandle(session, noAggregationPushdownTable);
    aggregationResult = applyAggregation.apply(noAggregationPushdownTableHandle);
    assertThat(aggregationResult).isEmpty();
}

Example 93 with ConnectorSession

use of io.trino.spi.connector.ConnectorSession in project trino by trinodb.

the class TestDefaultJdbcMetadata method testCombineFiltersWithAggregationPushdown.

@Test
public void testCombineFiltersWithAggregationPushdown() {
    ConnectorSession session = TestingConnectorSession.builder().setPropertyMetadata(new JdbcMetadataSessionProperties(new JdbcMetadataConfig().setAggregationPushdownEnabled(true), Optional.empty()).getSessionProperties()).build();
    ColumnHandle groupByColumn = metadata.getColumnHandles(session, tableHandle).get("text");
    ConnectorTableHandle baseTableHandle = metadata.getTableHandle(session, new SchemaTableName("example", "numbers"));
    Domain firstDomain = Domain.multipleValues(VARCHAR, ImmutableList.of(utf8Slice("one"), utf8Slice("two")));
    JdbcTableHandle filterResult = applyFilter(session, baseTableHandle, new Constraint(TupleDomain.withColumnDomains(ImmutableMap.of(groupByColumn, firstDomain))));
    ConnectorTableHandle aggregatedTable = applyCountAggregation(session, filterResult, ImmutableList.of(ImmutableList.of(groupByColumn)));
    Domain secondDomain = Domain.multipleValues(VARCHAR, ImmutableList.of(utf8Slice("one"), utf8Slice("three")));
    JdbcTableHandle tableHandleWithFilter = applyFilter(session, aggregatedTable, new Constraint(TupleDomain.withColumnDomains(ImmutableMap.of(groupByColumn, secondDomain))));
    assertEquals(tableHandleWithFilter.getConstraint().getDomains(), // as firstDomain has been converted into a PreparedQuery
    Optional.of(ImmutableMap.of(groupByColumn, secondDomain)));
    assertEquals(((JdbcQueryRelationHandle) tableHandleWithFilter.getRelationHandle()).getPreparedQuery().getQuery(), "SELECT \"TEXT\", count(*) AS \"_pfgnrtd_0\" " + "FROM \"" + database.getDatabaseName() + "\".\"EXAMPLE\".\"NUMBERS\" " + "WHERE \"TEXT\" IN (?,?) " + "GROUP BY \"TEXT\"");
}

Example 94 with ConnectorSession

use of io.trino.spi.connector.ConnectorSession in project trino by trinodb.

the class TestDefaultJdbcMetadata method testNonGroupKeyPredicatePushdown.

@Test
public void testNonGroupKeyPredicatePushdown() {
    ConnectorSession session = TestingConnectorSession.builder().setPropertyMetadata(new JdbcMetadataSessionProperties(new JdbcMetadataConfig().setAggregationPushdownEnabled(true), Optional.empty()).getSessionProperties()).build();
    Map<String, ColumnHandle> columnHandles = metadata.getColumnHandles(session, tableHandle);
    ColumnHandle groupByColumn = columnHandles.get("text");
    ColumnHandle nonGroupByColumn = columnHandles.get("value");
    ConnectorTableHandle baseTableHandle = metadata.getTableHandle(session, new SchemaTableName("example", "numbers"));
    ConnectorTableHandle aggregatedTable = applyCountAggregation(session, baseTableHandle, ImmutableList.of(ImmutableList.of(groupByColumn)));
    Domain domain = Domain.singleValue(BIGINT, 123L);
    JdbcTableHandle tableHandleWithFilter = applyFilter(session, aggregatedTable, new Constraint(TupleDomain.withColumnDomains(ImmutableMap.of(nonGroupByColumn, domain))));
    assertEquals(tableHandleWithFilter.getConstraint().getDomains(), Optional.of(ImmutableMap.of(nonGroupByColumn, domain)));
    assertEquals(((JdbcQueryRelationHandle) tableHandleWithFilter.getRelationHandle()).getPreparedQuery().getQuery(), "SELECT \"TEXT\", count(*) AS \"_pfgnrtd_0\" " + "FROM \"" + database.getDatabaseName() + "\".\"EXAMPLE\".\"NUMBERS\" " + "GROUP BY \"TEXT\"");
}

Example 95 with ConnectorSession

use of io.trino.spi.connector.ConnectorSession in project trino by trinodb.

the class TestDefaultJdbcMetadata method tesMultiGroupKeyPredicatePushdown.

@Test
public void tesMultiGroupKeyPredicatePushdown() {
    ConnectorSession session = TestingConnectorSession.builder().setPropertyMetadata(new JdbcMetadataSessionProperties(new JdbcMetadataConfig().setAggregationPushdownEnabled(true), Optional.empty()).getSessionProperties()).build();
    Map<String, ColumnHandle> columnHandles = metadata.getColumnHandles(session, tableHandle);
    ColumnHandle textColumn = columnHandles.get("text");
    ColumnHandle valueColumn = columnHandles.get("value");
    ConnectorTableHandle baseTableHandle = metadata.getTableHandle(session, new SchemaTableName("example", "numbers"));
    ConnectorTableHandle aggregatedTable = applyCountAggregation(session, baseTableHandle, ImmutableList.of(ImmutableList.of(textColumn, valueColumn), ImmutableList.of(textColumn)));
    Domain domain = Domain.singleValue(BIGINT, 123L);
    JdbcTableHandle tableHandleWithFilter = applyFilter(session, aggregatedTable, new Constraint(TupleDomain.withColumnDomains(ImmutableMap.of(valueColumn, domain))));
    assertEquals(tableHandleWithFilter.getConstraint().getDomains(), Optional.of(ImmutableMap.of(valueColumn, domain)));
    assertEquals(((JdbcQueryRelationHandle) tableHandleWithFilter.getRelationHandle()).getPreparedQuery().getQuery(), "SELECT \"TEXT\", \"VALUE\", count(*) AS \"_pfgnrtd_0\" " + "FROM \"" + database.getDatabaseName() + "\".\"EXAMPLE\".\"NUMBERS\" " + "GROUP BY GROUPING SETS ((\"TEXT\", \"VALUE\"), (\"TEXT\"))");
}