Examples with Builder org.apache.heron.streamlet.Builder used on opensource projects

Example 16 with Builder

use of org.apache.heron.streamlet.Builder in project heron by twitter.

the class StreamletWithFilterAndTransform method buildTopology.

@Override
protected TestTopologyBuilder buildTopology(TestTopologyBuilder testTopologyBuilder) {
    AtomicInteger atomicInteger = new AtomicInteger(0);
    Builder streamletBuilder = Builder.newBuilder();
    streamletBuilder.newSource(() -> atomicInteger.getAndIncrement()).setName("incremented-numbers").filter(i -> i <= 7).setName("numbers-lower-than-8").transform(new TextTransformer()).setName("numbers-transformed-to-text");
    BuilderImpl streamletBuilderImpl = (BuilderImpl) streamletBuilder;
    TestTopologyBuilder topology = (TestTopologyBuilder) streamletBuilderImpl.build(testTopologyBuilder);
    return topology;
}