List of outputSchema() Examples

Examples of outputSchema()

org.apache.pig.builtin.BagToString.outputSchema()
org.apache.pig.builtin.BagToTuple.outputSchema()
org.apache.pig.builtin.TOBAG.outputSchema()
org.apache.pig.impl.logicalLayer.LogicalOperator.outputSchema()
org.apache.pig.piggybank.evaluation.string.UPPER.outputSchema()
This method gives a name to the column. @param input - schema of the input data @return schema of the input data

Examples of org.apache.pig.builtin.BagToString.outputSchema()




    Schema inputSch = new Schema();


    BagToString udf = new BagToString();
    Schema outputSchema = udf.outputSchema(inputSch);


    assertEquals("schema of BagToTuple input", outputSchema.getField(0).type,
        DataType.CHARARRAY);


  }

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Examples of org.apache.pig.builtin.BagToString.outputSchema()

    Schema inputSch = new Schema();
    inputSch.add(bagSch);
    inputSch.add(new FieldSchema(null, DataType.CHARARRAY));


    BagToString udf = new BagToString();
    Schema outputSchema = udf.outputSchema(inputSch);


    assertEquals("schema of BagToTuple input", outputSchema.getField(0).type,
        DataType.CHARARRAY);


  }

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Examples of org.apache.pig.builtin.BagToString.outputSchema()


    Schema inputSch = new Schema();
    inputSch.add(bagSch);


    BagToString udf = new BagToString();
    Schema outputSchema = udf.outputSchema(inputSch);


    assertEquals("schema of BagToTuple input", outputSchema.getField(0).type,
        DataType.CHARARRAY);


  }

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Examples of org.apache.pig.builtin.BagToString.outputSchema()

    inputSch.add(bagSch);
    inputSch.add(new FieldSchema(null, DataType.DOUBLE));


    BagToString udf = new BagToString();
    // expecting an exception because the delimiter is not of type Data.CHARARRAY
    udf.outputSchema(inputSch);
  }


  @Test
  public void testPigScriptForBagToTupleUDF() throws Exception {
    PigServer pigServer = new PigServer(ExecType.LOCAL);

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Examples of org.apache.pig.builtin.BagToTuple.outputSchema()


    Schema inputSch = new Schema();
    inputSch.add(bagSch);


    BagToTuple udf = new BagToTuple();
    Schema outputSchema = udf.outputSchema(inputSch);


    assertEquals("schema of BagToTuple input", expectedSch.size(),
        outputSchema.size());
    assertTrue("schema of BagToTuple input",
        Schema.equals(expectedSch, outputSchema, false, true));

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Examples of org.apache.pig.builtin.TOBAG.outputSchema()

        inputSch.add(new FieldSchema("c", tupInSchema, DataType.TUPLE));
        //expect null inner schema
        expectedSch =
            Schema.generateNestedSchema(DataType.BAG, DataType.NULL);
        assertEquals("schema of tobag when input has cols of type tuple with diff inner schema",
                expectedSch, tb.outputSchema(inputSch));


        
        
        Tuple input = TupleFactory.getInstance().newTuple();
        for (int i = 0; i < 100; ++i) {

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Examples of org.apache.pig.builtin.TOBAG.outputSchema()


        //check schema of TOBAG when given input tuple having only integers
        Schema inputSch = new Schema();
        inputSch.add(new FieldSchema(null, DataType.INTEGER));
        assertEquals("schema of tobag when input has only ints",
                expectedSch, tb.outputSchema(inputSch));


        //add another int column
        inputSch.add(new FieldSchema(null, DataType.INTEGER));
        assertEquals("schema of tobag when input has only ints",
                expectedSch, tb.outputSchema(inputSch));

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Examples of org.apache.pig.builtin.TOBAG.outputSchema()

                expectedSch, tb.outputSchema(inputSch));


        //add another int column
        inputSch.add(new FieldSchema(null, DataType.INTEGER));
        assertEquals("schema of tobag when input has only ints",
                expectedSch, tb.outputSchema(inputSch));


        //add a long column
        inputSch.add(new FieldSchema(null, DataType.LONG));
        //expect null inner schema
        expectedSch =

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Examples of org.apache.pig.builtin.TOBAG.outputSchema()

        inputSch.add(new FieldSchema(null, DataType.LONG));
        //expect null inner schema
        expectedSch =
            Schema.generateNestedSchema(DataType.BAG, DataType.NULL);
        assertEquals("schema of tobag when input has ints and long",
                expectedSch, tb.outputSchema(inputSch));


        
        //test schema when input is a tuple with inner schema
        Schema tupInSchema = new Schema(new FieldSchema("x", DataType.CHARARRAY));
        inputSch = new Schema();

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Examples of org.apache.pig.builtin.TOBAG.outputSchema()

        inputSch.add(new FieldSchema("a", tupInSchema, DataType.TUPLE));
        Schema inputSchCp = new Schema(inputSch);
        inputSchCp.getField(0).alias = null;
        expectedSch = new Schema(new FieldSchema(null, inputSchCp, DataType.BAG));
        assertEquals("schema of tobag when input has cols of type tuple ",
                expectedSch, tb.outputSchema(inputSch));
        
        inputSch.add(new FieldSchema("b", tupInSchema, DataType.TUPLE));
        assertEquals("schema of tobag when input has cols of type tuple ",
                expectedSch, tb.outputSchema(inputSch));

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