Examples of cascading.pipe.Pipe

cascading.pipe.Pipe
Class Pipe is used to name branches in pipe assemblies, and as a base class for core processing model types, specifically {@link Each}, {@link Every}, {@link GroupBy}, {@link CoGroup}, {@link Merge}, {@link HashJoin}, and {@link SubAssembly}.
Pipes are chained together through their constructors.
To effect a split in the pipe, simply pass a Pipe instance to two or more constructors of subsequent Pipe instances.
A join can be achieved by passing two or more Pipe instances to a {@link CoGroup} or {@link HashJoin} pipe.
A merge can be achieved by passing two or more Pipe instances to a {@link GroupBy} or {@link Merge} pipe. @see Each @see Every @see GroupBy @see Merge @see CoGroup @see HashJoin @see SubAssembly


    @Test
    public void testWriteToES() throws Exception {
        Tap in = sourceTap();
        Tap out = new EsTap("cascading-hadoop/artists", new Fields("name", "url", "picture"));
        Pipe pipe = new Pipe("copy");


        FlowDef flowDef = FlowDef.flowDef().addSource(pipe, in).addTailSink(pipe, out);
        StatsUtils.proxy(new HadoopFlowConnector(HdpBootstrap.asProperties(CascadingHadoopSuite.configuration)).connect(flowDef)).complete();
    }

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    @Test
    public void testWriteToESWithAlias() throws Exception {
        Tap in = sourceTap();
        Tap out = new EsTap("cascading-hadoop/alias", "", new Fields("name", "url", "picture"));
        Pipe pipe = new Pipe("copy");


        // rename "id" -> "garbage"
        pipe = new Each(pipe, new Identity(new Fields("garbage", "name", "url", "picture", "ts")));


        Properties props = HdpBootstrap.asProperties(CascadingHadoopSuite.configuration);

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    public void testIndexPattern() throws Exception {
        Properties props = HdpBootstrap.asProperties(CascadingHadoopSuite.configuration);


        Tap in = sourceTap();
        Tap out = new EsTap("cascading-hadoop/pattern-{id}", new Fields("id", "name", "url", "picture"));
        Pipe pipe = new Pipe("copy");
        StatsUtils.proxy(new HadoopFlowConnector(props).connect(in, out, pipe)).complete();
    }

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    public void testIndexPatternWithFormat() throws Exception {
        Properties props = HdpBootstrap.asProperties(CascadingHadoopSuite.configuration);


        Tap in = sourceTap();
        Tap out = new EsTap("cascading-hadoop/pattern-format-{ts:YYYY-MM-dd}", new Fields("id", "name", "url", "picture", "ts"));
        Pipe pipe = new Pipe("copy");
        StatsUtils.proxy(new HadoopFlowConnector(props).connect(in, out, pipe)).complete();
    }

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                is("pattern-format-2012-10-06=[id=STRING, name=STRING, picture=STRING, ts=DATE, url=STRING]"));
    }


    @Test
    public void testCascadeConnector() {
        Pipe copy = new Pipe("copy");
        Properties cfg = HdpBootstrap.asProperties(CascadingHadoopSuite.configuration);


        FlowDef flow = new FlowDef().addSource(copy, sourceTap())
                .addTailSink(copy, new EsTap("cascading-hadoop/cascade-connector"));

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    public void testWriteToES() throws Exception {
        // local file-system source
        Tap in = sourceTap();
        Tap out = new EsTap("json-cascading-hadoop/artists");


        Pipe pipe = new Pipe("copy");
        build(cfg(), in, out, pipe);
    }

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        cfg.setProperty(ConfigurationOptions.ES_INDEX_AUTO_CREATE, "false");


        // local file-system source
        Tap in = sourceTap();
        Tap out = new EsTap("json-cascading-hadoop/non-existing", new Fields("line"));
        Pipe pipe = new Pipe("copy");
        build(cfg, in, out, pipe);
    }

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    @Test
    public void testIndexPattern() throws Exception {
        Tap in = sourceTap();
        Tap out = new EsTap("json-cascading-hadoop/pattern-{number}", new Fields("line"));
        Pipe pipe = new Pipe("copy");
        build(cfg(), in, out, pipe);
    }

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    @Test
    public void testIndexPatternWithFormat() throws Exception {
        Tap in = sourceTap();
        Tap out = new EsTap("json-cascading-hadoop/pattern-format-{@timestamp:YYYY-MM-dd}", new Fields("line"));
        Pipe pipe = new Pipe("copy");
        build(cfg(), in, out, pipe);
    }

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    public void testWriteToES() throws Exception {
        // local file-system source
        Tap in = sourceTap();
        Tap out = new EsTap("cascading-local/artists", new Fields("name", "url", "picture"));


        Pipe pipe = new Pipe("copy");
        build(new TestSettings().getProperties(), in, out, pipe);
    }

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cascading.cascade.CascadePlatformTest

cascading.cascade.hadoop.RiffleCascadePlatformTest

cascading.cascade.ParallelCascadePlatformTest

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