Examples of org.apache.pig.impl.plan.CompilationMessageCollector$Message

org.apache.pig.impl.plan.CompilationMessageCollector
This class is used for collecting all messages (error + warning) in compilation process. These messages are reported back to users at the end of compilation. iterator() has to be called after CompilationMessageCollector is fully populated otherwise the state is undefined.


        plan.connect(load1, union);
        plan.connect(load2, union);


        // validate
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;

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        plan.connect(load1, union);
        plan.connect(load2, union);


        // validate
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;

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        plan.connect(load1, split1) ;
        plan.connect(split1, splitOutput1) ;
        plan.connect(split1, splitOutput2) ;


        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;


        if (collector.hasError()) {
            throw new AssertionError("Expect no error") ;
        }


        // check split itself
        assertEquals(split1.getSchema(), null) ;

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        plan.connect(load1, split1) ;
        plan.connect(split1, splitOutput1) ;
        plan.connect(split1, splitOutput2) ;


        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        try {
            TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
            typeValidator.validate(plan, collector) ;
            fail("Exception expected") ;
        }

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        plan.add(distinct1) ;


        plan.connect(load1, distinct1);


        // validate
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;

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        plan.add(load1);
        plan.add(sort1);
        plan.connect(load1, sort1) ;


        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;
        TypeCheckingTestUtil.printMessageCollector(collector) ;
        TypeCheckingTestUtil.printTypeGraph(plan) ;


        if (collector.hasError()) {
            throw new AssertionError("Expect no error") ;
        }


        assertEquals(sort1.getSchema(), null) ;

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        plan.add(load1);
        plan.add(filter1);
        plan.connect(load1, filter1) ;


        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;
        TypeCheckingTestUtil.printMessageCollector(collector) ;
        TypeCheckingTestUtil.printTypeGraph(plan) ;


        if (collector.hasError()) {
            throw new AssertionError("Expect no error") ;
        }


        assertEquals(filter1.getSchema(), null) ;

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        plan.add(load1);
        plan.add(filter1);
        plan.connect(load1, filter1) ;


        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try {
            typeValidator.validate(plan, collector) ;
            fail("Exception expected") ;
        }
        catch(PlanValidationException pve) {
            // good
        }


        TypeCheckingTestUtil.printMessageCollector(collector) ;
        TypeCheckingTestUtil.printTypeGraph(plan) ;


        if (!collector.hasError()) {
            throw new AssertionError("Expect an error") ;
        }


    }

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        plan.connect(load1, cross);
        plan.connect(load2, cross);


        // validate
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;


        printMessageCollector(collector) ;
        printTypeGraph(plan) ;

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        plan.connect(load1, cross);
        plan.connect(load2, cross);


        // validate
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;


        printMessageCollector(collector) ;
        printTypeGraph(plan) ;

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