Examples with FlinkContext org.apache.flink.table.planner.calcite.FlinkContext used on opensource projects

Example 1 with FlinkContext

use of org.apache.flink.table.planner.calcite.FlinkContext in project flink by apache.

the class PushPartitionIntoTableSourceScanRule method onMatch.

@Override
public void onMatch(RelOptRuleCall call) {
    Filter filter = call.rel(0);
    LogicalTableScan scan = call.rel(1);
    TableSourceTable tableSourceTable = scan.getTable().unwrap(TableSourceTable.class);
    RelDataType inputFieldTypes = filter.getInput().getRowType();
    List<String> inputFieldNames = inputFieldTypes.getFieldNames();
    List<String> partitionFieldNames = tableSourceTable.contextResolvedTable().<ResolvedCatalogTable>getResolvedTable().getPartitionKeys();
    // extract partition predicates
    RelBuilder relBuilder = call.builder();
    RexBuilder rexBuilder = relBuilder.getRexBuilder();
    Tuple2<Seq<RexNode>, Seq<RexNode>> allPredicates = RexNodeExtractor.extractPartitionPredicateList(filter.getCondition(), FlinkRelOptUtil.getMaxCnfNodeCount(scan), inputFieldNames.toArray(new String[0]), rexBuilder, partitionFieldNames.toArray(new String[0]));
    RexNode partitionPredicate = RexUtil.composeConjunction(rexBuilder, JavaConversions.seqAsJavaList(allPredicates._1));
    if (partitionPredicate.isAlwaysTrue()) {
        return;
    }
    // build pruner
    LogicalType[] partitionFieldTypes = partitionFieldNames.stream().map(name -> {
        int index = inputFieldNames.indexOf(name);
        if (index < 0) {
            throw new TableException(String.format("Partitioned key '%s' isn't found in input columns. " + "Validator should have checked that.", name));
        }
        return inputFieldTypes.getFieldList().get(index).getType();
    }).map(FlinkTypeFactory::toLogicalType).toArray(LogicalType[]::new);
    RexNode finalPartitionPredicate = adjustPartitionPredicate(inputFieldNames, partitionFieldNames, partitionPredicate);
    FlinkContext context = ShortcutUtils.unwrapContext(scan);
    Function<List<Map<String, String>>, List<Map<String, String>>> defaultPruner = partitions -> PartitionPruner.prunePartitions(context.getTableConfig(), partitionFieldNames.toArray(new String[0]), partitionFieldTypes, partitions, finalPartitionPredicate);
    // prune partitions
    List<Map<String, String>> remainingPartitions = readPartitionsAndPrune(rexBuilder, context, tableSourceTable, defaultPruner, allPredicates._1(), inputFieldNames);
    // apply push down
    DynamicTableSource dynamicTableSource = tableSourceTable.tableSource().copy();
    PartitionPushDownSpec partitionPushDownSpec = new PartitionPushDownSpec(remainingPartitions);
    partitionPushDownSpec.apply(dynamicTableSource, SourceAbilityContext.from(scan));
    // build new statistic
    TableStats newTableStat = null;
    if (tableSourceTable.contextResolvedTable().isPermanent()) {
        ObjectIdentifier identifier = tableSourceTable.contextResolvedTable().getIdentifier();
        ObjectPath tablePath = identifier.toObjectPath();
        Catalog catalog = tableSourceTable.contextResolvedTable().getCatalog().get();
        for (Map<String, String> partition : remainingPartitions) {
            Optional<TableStats> partitionStats = getPartitionStats(catalog, tablePath, partition);
            if (!partitionStats.isPresent()) {
                // clear all information before
                newTableStat = null;
                break;
            } else {
                newTableStat = newTableStat == null ? partitionStats.get() : newTableStat.merge(partitionStats.get());
            }
        }
    }
    FlinkStatistic newStatistic = FlinkStatistic.builder().statistic(tableSourceTable.getStatistic()).tableStats(newTableStat).build();
    TableSourceTable newTableSourceTable = tableSourceTable.copy(dynamicTableSource, newStatistic, new SourceAbilitySpec[] { partitionPushDownSpec });
    LogicalTableScan newScan = LogicalTableScan.create(scan.getCluster(), newTableSourceTable, scan.getHints());
    // transform to new node
    RexNode nonPartitionPredicate = RexUtil.composeConjunction(rexBuilder, JavaConversions.seqAsJavaList(allPredicates._2()));
    if (nonPartitionPredicate.isAlwaysTrue()) {
        call.transformTo(newScan);
    } else {
        Filter newFilter = filter.copy(filter.getTraitSet(), newScan, nonPartitionPredicate);
        call.transformTo(newFilter);
    }
}

Example 2 with FlinkContext

use of org.apache.flink.table.planner.calcite.FlinkContext in project flink by apache.

the class BridgingSqlFunction method of.

/**
 * Creates an instance of a scalar or table function during translation.
 */
public static BridgingSqlFunction of(RelOptCluster cluster, ContextResolvedFunction resolvedFunction) {
    final FlinkContext context = ShortcutUtils.unwrapContext(cluster);
    final FlinkTypeFactory typeFactory = ShortcutUtils.unwrapTypeFactory(cluster);
    return of(context, typeFactory, resolvedFunction);
}

Example 3 with FlinkContext

use of org.apache.flink.table.planner.calcite.FlinkContext in project flink by apache.

the class LookupKeySerdeTest method testLookupKey.

@Test
public void testLookupKey() throws IOException {
    TableConfig tableConfig = TableConfig.getDefault();
    ModuleManager moduleManager = new ModuleManager();
    CatalogManager catalogManager = CatalogManager.newBuilder().classLoader(Thread.currentThread().getContextClassLoader()).config(tableConfig.getConfiguration()).defaultCatalog("default_catalog", new GenericInMemoryCatalog("default_db")).build();
    FlinkContext flinkContext = new FlinkContextImpl(false, tableConfig, moduleManager, new FunctionCatalog(tableConfig, catalogManager, moduleManager), catalogManager, null);
    SerdeContext serdeCtx = new SerdeContext(null, flinkContext, Thread.currentThread().getContextClassLoader(), FlinkTypeFactory.INSTANCE(), FlinkSqlOperatorTable.instance());
    ObjectReader objectReader = JsonSerdeUtil.createObjectReader(serdeCtx);
    ObjectWriter objectWriter = JsonSerdeUtil.createObjectWriter(serdeCtx);
    LookupJoinUtil.LookupKey[] lookupKeys = new LookupJoinUtil.LookupKey[] { new LookupJoinUtil.ConstantLookupKey(new BigIntType(), new RexBuilder(FlinkTypeFactory.INSTANCE()).makeLiteral("a")), new LookupJoinUtil.FieldRefLookupKey(3) };
    for (LookupJoinUtil.LookupKey lookupKey : lookupKeys) {
        LookupJoinUtil.LookupKey result = objectReader.readValue(objectWriter.writeValueAsString(lookupKey), LookupJoinUtil.LookupKey.class);
        assertEquals(lookupKey, result);
    }
}

Example 4 with FlinkContext

use of org.apache.flink.table.planner.calcite.FlinkContext in project flink by apache.

the class CatalogSourceTable method toRel.

@Override
public RelNode toRel(ToRelContext toRelContext) {
    final RelOptCluster cluster = toRelContext.getCluster();
    final List<RelHint> hints = toRelContext.getTableHints();
    final FlinkContext context = ShortcutUtils.unwrapContext(cluster);
    final FlinkRelBuilder relBuilder = FlinkRelBuilder.of(cluster, relOptSchema);
    // finalize catalog table with option hints
    final Map<String, String> hintedOptions = FlinkHints.getHintedOptions(hints);
    final ContextResolvedTable catalogTable = computeContextResolvedTable(context, hintedOptions);
    // create table source
    final DynamicTableSource tableSource = createDynamicTableSource(context, catalogTable.getResolvedTable());
    // prepare table source and convert to RelNode
    return DynamicSourceUtils.convertSourceToRel(!schemaTable.isStreamingMode(), context.getTableConfig().getConfiguration(), relBuilder, schemaTable.getContextResolvedTable(), schemaTable.getStatistic(), hints, tableSource);
}

Example 5 with FlinkContext

use of org.apache.flink.table.planner.calcite.FlinkContext in project flink by apache.

the class PushFilterIntoSourceScanRuleBase method extractPredicates.

protected Tuple2<RexNode[], RexNode[]> extractPredicates(String[] inputNames, RexNode filterExpression, TableScan scan, RexBuilder rexBuilder) {
    FlinkContext context = ShortcutUtils.unwrapContext(scan);
    int maxCnfNodeCount = FlinkRelOptUtil.getMaxCnfNodeCount(scan);
    RexNodeToExpressionConverter converter = new RexNodeToExpressionConverter(rexBuilder, inputNames, context.getFunctionCatalog(), context.getCatalogManager(), TimeZone.getTimeZone(context.getTableConfig().getLocalTimeZone()));
    return RexNodeExtractor.extractConjunctiveConditions(filterExpression, maxCnfNodeCount, rexBuilder, converter);
}