Examples with TupleSerializer com.ibm.streamsx.topology.spi.runtime.TupleSerializer used on opensource projects

Example 1 with TupleSerializer

use of com.ibm.streamsx.topology.spi.runtime.TupleSerializer in project streamsx.topology by IBMStreams.

the class Invoker method invokePrimitive.

/**
 * Invoke a functional operator consuming an arbitrary number of
 * input streams and producing an arbitrary number of output streams.
 *
 * @param te Topology element.
 * @param kind Java functional operator kind.
 * @param streams Input streams.
 * @param invokeInfo Operator invocation information.
 * @param logic Logic to invoke for each input tuple.
 * @param tupleTypes Tuple types for the output stream.
 * @param inputSerializers How input tuples are serialized.
 * @param outputSerializers How output tuples are serialized.
 * @param parameters Parameters for the operator invocation.
 *
 * @return Streams produced by the primitive operator.
 */
static List<TStream<?>> invokePrimitive(TopologyElement te, String kind, List<TStream<?>> streams, JsonObject invokeInfo, ObjIntConsumer<Object> logic, List<Type> tupleTypes, List<TupleSerializer> inputSerializers, List<TupleSerializer> outputSerializers, Map<String, Object> parameters) {
    parameters = copyParameters(parameters);
    if (inputSerializers != null && !inputSerializers.isEmpty()) {
        assert streams.size() == inputSerializers.size();
        String[] serializers = new String[inputSerializers.size()];
        for (int i = 0; i < serializers.length; i++) {
            TupleSerializer serializer = inputSerializers.get(i);
            if (serializer == null)
                serializers[i] = "";
            else
                serializers[i] = serializeLogic(serializer);
        }
        parameters.put("inputSerializer", serializers);
    }
    if (outputSerializers != null && !outputSerializers.isEmpty()) {
        assert tupleTypes.size() == outputSerializers.size();
        String[] serializers = new String[outputSerializers.size()];
        for (int i = 0; i < serializers.length; i++) {
            TupleSerializer serializer = outputSerializers.get(i);
            if (serializer == null)
                serializers[i] = "";
            else
                serializers[i] = serializeLogic(serializer);
        }
        parameters.put("outputSerializer", serializers);
    }
    BOperatorInvocation primitive = JavaFunctional.addFunctionalOperator(te, jstring(invokeInfo, "name"), kind, logic, parameters);
    if (inputSerializers != null) {
        for (TupleSerializer serializer : inputSerializers) if (serializer != null)
            JavaFunctional.addDependency(te, primitive, serializer.getClass());
    }
    // Extract any source location information from the config.
    SourceInfo.setInvocationInfo(primitive, invokeInfo);
    for (TStream<?> stream : streams) stream.connectTo(primitive, true, null);
    List<TStream<?>> outputs = null;
    if (tupleTypes != null) {
        outputs = new ArrayList<>(tupleTypes.size());
        for (int i = 0; i < tupleTypes.size(); i++) {
            Type tupleType = tupleTypes.get(i);
            outputs.add(JavaFunctional.addJavaOutput(te, primitive, tupleType, outputSerializers == null ? empty() : ofNullable(outputSerializers.get(i)), tupleTypes.size() == 1));
        }
    }
    return outputs;
}