Examples of Tap

cascading.tap.Tap
A Tap represents the physical data source or sink in a connected {@link cascading.flow.Flow}.
That is, a source Tap is the head end of a connected {@link Pipe} and {@link Tuple} stream, anda sink Tap is the tail end. Kinds of Tap types are used to manage files from a local disk, distributed disk, remote storage like Amazon S3, or via FTP. It simply abstracts out the complexity of connecting to these types of data sources.
A Tap takes a {@link Scheme} instance, which is used to identify the type of resource (text file, binary file, etc).A Tap is responsible for how the resource is reached.
By default when planning a Flow, Tap equality is a function of the {@link #getIdentifier()} and {@link #getScheme()}values. That is, two Tap instances are the same Tap instance if they sink/source the same resource and sink/source the same fields.
Some more advanced taps, like a database tap, may need to extend equality to include any filtering, like the {@code where} clause in a SQL statement so two taps reading from the same SQL table aren't considered equal.
Taps are also used to determine dependencies between two or more {@link Flow} instances when used with a{@link cascading.cascade.Cascade}. In that case the {@link #getFullIdentifier(Object)} value is used and the Schemeis ignored.
com.vst.model.Tap
Created by IntelliJ IDEA. User: And Lilia Date: 07.04.2009 Time: 18:32:46 To change this template use File | Settings | File Templates. @hibernate.subclass discriminator-value = "tap"
org.springframework.xd.test.fixtures.Tap
Test fixture that creates a tap. @author Glenn Renfro

Examples of cascading.tap.Tap


        properties.put(ConfigurationOptions.ES_UPDATE_SCRIPT, "counter += param1; anothercounter += param2");
        properties.put(ConfigurationOptions.ES_UPDATE_SCRIPT_LANG, "groovy");
        properties.put(ConfigurationOptions.ES_UPDATE_SCRIPT_PARAMS, " param1:<1>,   param2:id ");


        Tap in = sourceTap();
        // use an existing id to allow the update to succeed
        Tap out = new EsTap("cascading-local/upsert-param-script", new Fields("id", "name", "url", "picture"));


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

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Examples of cascading.tap.Tap


        properties.put(ConfigurationOptions.ES_UPDATE_SCRIPT, "counter += param1; anothercounter += param2");
        properties.put(ConfigurationOptions.ES_UPDATE_SCRIPT_LANG, "groovy");
        properties.put(ConfigurationOptions.ES_UPDATE_SCRIPT_PARAMS_JSON, "{ \"param1\":1, \"param2\":2}");


        Tap in = sourceTap();
        // use an existing id to allow the update to succeed
        Tap out = new EsTap("cascading-local/upsert-script-json-script", new Fields("id", "name", "url", "picture"));


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

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Examples of cascading.tap.Tap

        RestUtils.refresh("cascading-local");
    }


    @Test
    public void testReadFromES() throws Exception {
        Tap in = new EsTap("cascading-local/artists", query);
        Pipe pipe = new Pipe("copy");
        pipe = new Each(pipe, new FilterNotNull());
        pipe = new Each(pipe, AssertionLevel.STRICT, new AssertSizeLessThan(5));
        // can't select when using unknown
        //pipe = new Each(pipe, new Fields("name"), AssertionLevel.STRICT, new AssertNotNull());
        pipe = new GroupBy(pipe);
        pipe = new Every(pipe, new Count());


        // print out
        Tap out = new OutputStreamTap(new TextLine(), OUT);
        build(cfg(), in, out, pipe);
    }

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Examples of cascading.tap.Tap

        build(cfg(), in, out, pipe);
    }


    @Test
    public void testReadFromESWithFields() throws Exception {
        Tap in = new EsTap("cascading-local/artists", query, new Fields("url", "name"));
        Pipe pipe = new Pipe("copy");
        pipe = new Each(pipe, AssertionLevel.STRICT, new AssertSizeEquals(2));
        pipe = new Each(pipe, AssertionLevel.STRICT, new AssertNotNull());
        pipe = new GroupBy(pipe);
        pipe = new Every(pipe, new Count());


        // print out
        Tap out = new OutputStreamTap(new TextLine(), OUT);
        build(cfg(), in, out, pipe);
    }

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Examples of cascading.tap.Tap

        build(cfg(), in, out, pipe);
    }


    @Test
    public void testReadFromESAliasedField() throws Exception {
        Tap in = new EsTap("cascading-local/alias", query, new Fields("address"));
        Pipe pipe = new Pipe("copy");
        pipe = new Each(pipe, AssertionLevel.STRICT, new AssertNotNull());
        pipe = new GroupBy(pipe);
        pipe = new Every(pipe, new Count());


        // print out
        Tap out = new OutputStreamTap(new TextLine(), OUT);
        build(cfg(), in, out, pipe);
    }

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Examples of cascading.tap.Tap

        build(cfg(), in, out, pipe);
    }


    @Test
    public void testReadFromESWithFieldAlias() throws Exception {
        Tap in = new EsTap("cascading-local/alias", query, new Fields("url"));
        Pipe pipe = new Pipe("copy");
        pipe = new Each(pipe, AssertionLevel.STRICT, new AssertNotNull());
        pipe = new GroupBy(pipe);
        pipe = new Every(pipe, new Count());


        // print out
        // print out
        Tap out = new OutputStreamTap(new TextLine(), OUT);
        Properties cfg = cfg();
        cfg.setProperty("es.mapping.names", "url:address");
        build(cfg, in, out, pipe);
    }

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Examples of cascading.tap.Tap

    @Test
    public void testWriteToES() throws Exception {
        Properties props = new TestSettings().getProperties();
        props.put(ConfigurationOptions.ES_INPUT_JSON, "true");


        Tap in = sourceTap();
        Tap out = new EsTap("json-cascading-local/artists");


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

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Examples of cascading.tap.Tap

    public void testIndexAutoCreateDisabled() throws Exception {
        Properties properties = new TestSettings().getProperties();
        properties.put(ConfigurationOptions.ES_INDEX_AUTO_CREATE, "false");
        properties.put(ConfigurationOptions.ES_INPUT_JSON, "true");


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

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Examples of cascading.tap.Tap

    @Test
    public void testIndexPattern() throws Exception {
        Properties properties = new TestSettings().getProperties();
        properties.put(ConfigurationOptions.ES_INPUT_JSON, "yes");


        Tap in = sourceTap();
        Tap out = new EsTap("json-cascading-local/pattern-{number}", new Fields("line"));
        Pipe pipe = new Pipe("copy");
        build(properties, in, out, pipe);
    }

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Examples of cascading.tap.Tap

    @Test
    public void testIndexPatternWithFormat() throws Exception {
        Properties properties = new TestSettings().getProperties();
        properties.put(ConfigurationOptions.ES_INPUT_JSON, "yes");


        Tap in = sourceTap();
        Tap out = new EsTap("json-cascading-local/pattern-format-{@timestamp:YYYY-MM-dd}", new Fields("line"));
        Pipe pipe = new Pipe("copy");
        build(properties, in, out, pipe);
    }

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