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

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


        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") ;
        }


        Schema endResultSchema = sort1.getSchema() ;

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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) ;
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;


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


        Schema endResultSchema = sort1.getSchema() ;

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


        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try {
            typeValidator.validate(plan, collector) ;
            fail("Error expected") ;
        }
        catch (Exception t) {
            // good
        }
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;


        if (!collector.hasError()) {
            throw new AssertionError("Error expected") ;
        }


    }

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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
        {

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


        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try {
            typeValidator.validate(plan, collector) ;
        }
        catch (Exception t) {
            // good
        }
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;


        if (!collector.hasError()) {
            throw new AssertionError("Error expected") ;
        }


    }

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        plan.add(cogroup1) ;


        plan.connect(load1, cogroup1);
        plan.connect(load2, cogroup1);


        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 outer schema
        Schema endResultSchema = cogroup1.getSchema() ;

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        plan.add(cogroup1) ;


        plan.connect(load1, cogroup1);
        plan.connect(load2, cogroup1);


        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 outer schema
        Schema endResultSchema = cogroup1.getSchema() ;

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        plan.add(cogroup1) ;


        plan.connect(load1, cogroup1);
        plan.connect(load2, cogroup1);


        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 outer schema
        Schema endResultSchema = cogroup1.getSchema() ;

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        plan.add(load1) ;
        plan.add(foreach1) ;


        plan.connect(load1, foreach1);


        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 outer schema
        Schema endResultSchema = foreach1.getSchema() ;

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        planTester.buildPlan("a = load 'a' using BinStorage() ;") ;
        planTester.buildPlan("b = foreach a generate $0#'key1';") ;
        LogicalPlan plan = planTester.buildPlan("c = foreach b generate $0#'key2' + 1 ;") ;


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


        printMessageCollector(collector) ;
        printTypeGraph(plan) ;
        planTester.printPlan(plan, TypeCheckingTestUtil.getCurrentMethodName());


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




        LOForEach foreach = (LOForEach)plan.getLeaves().get(0);

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