Examples of eu.stratosphere.api.java.tuple.Tuple5

eu.stratosphere.api.java.tuple.Tuple5
A tuple with 5 fields. Tuples are strongly typed; each field may be of a separate type. The fields of the tuple can be accessed directly as public fields (f0, f1, ...) or via their position through the {@link #getField(int)} method. The tuple field positions start at zero.
Tuples are mutable types, meaning that their fields can be re-assigned. This allows functions that work with Tuples to reuse objects in order to reduce pressure on the garbage collector. @see Tuple @param < T0> The type of field 0 @param < T1> The type of field 1 @param < T2> The type of field 2 @param < T3> The type of field 3 @param < T4> The type of field 4

        .setDrivername("org.apache.derby.jdbc.EmbeddedDriver")
        .setDBUrl("jdbc:derby:memory:ebookshop")
        .setQuery("select * from books")
        .finish();
    jdbcInputFormat.open(null);
    Tuple5 tuple = new Tuple5();
    int recordCount = 0;
    while (!jdbcInputFormat.reachedEnd()) {
      jdbcInputFormat.nextRecord(tuple);
      Assert.assertEquals("Field 0 should be int", Integer.class, tuple.getField(0).getClass());
      Assert.assertEquals("Field 1 should be String", String.class, tuple.getField(1).getClass());
      Assert.assertEquals("Field 2 should be String", String.class, tuple.getField(2).getClass());
      Assert.assertEquals("Field 3 should be float", Double.class, tuple.getField(3).getClass());
      Assert.assertEquals("Field 4 should be int", Integer.class, tuple.getField(4).getClass());


      for (int x = 0; x < 5; x++) {
        Assert.assertEquals(dbData[recordCount][x], tuple.getField(x));
      }
      recordCount++;
    }
    Assert.assertEquals(5, recordCount);
  }

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        .setDBUrl("jdbc:derby:memory:ebookshop")
        .setQuery("insert into books (id, title, author, price, qty) values (?,?,?,?,?)")
        .finish();
    jdbcOutputFormat.open(0, 1);


    Tuple5 tuple5 = new Tuple5();
    tuple5.setField(4, 0);
    tuple5.setField("hello", 1);
    tuple5.setField("world", 2);
    tuple5.setField(0.99, 3);
    tuple5.setField("imthewrongtype", 4);


    jdbcOutputFormat.writeRecord(tuple5);
    jdbcOutputFormat.close();
  }

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        .setDBUrl(dbUrl)
        .setQuery("select * from " + sourceTable)
        .finish();
    jdbcInputFormat.open(null);


    Tuple5 tuple = new Tuple5();
    while (!jdbcInputFormat.reachedEnd()) {
      jdbcInputFormat.nextRecord(tuple);
      jdbcOutputFormat.writeRecord(tuple);
    }


    jdbcOutputFormat.close();
    jdbcInputFormat.close();


    jdbcInputFormat = JDBCInputFormat.buildJDBCInputFormat()
        .setDrivername(driverPath)
        .setDBUrl(dbUrl)
        .setQuery("select * from " + targetTable)
        .finish();
    jdbcInputFormat.open(null);


    int recordCount = 0;
    while (!jdbcInputFormat.reachedEnd()) {
      jdbcInputFormat.nextRecord(tuple);
      Assert.assertEquals("Field 0 should be int", Integer.class, tuple.getField(0).getClass());
      Assert.assertEquals("Field 1 should be String", String.class, tuple.getField(1).getClass());
      Assert.assertEquals("Field 2 should be String", String.class, tuple.getField(2).getClass());
      Assert.assertEquals("Field 3 should be float", Double.class, tuple.getField(3).getClass());
      Assert.assertEquals("Field 4 should be int", Integer.class, tuple.getField(4).getClass());


      for (int x = 0; x < 5; x++) {
        Assert.assertEquals(dbData[recordCount][x], tuple.getField(x));
      }


      recordCount++;
    }
    Assert.assertEquals(5, recordCount);

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Related Classes of eu.stratosphere.api.java.tuple.Tuple5

eu.stratosphere.api.java.io.jdbc.JDBCInputFormatTest

eu.stratosphere.api.java.io.jdbc.JDBCOutputFormatTest

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