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.

        planTester.buildPlan("a = load 'a' using BinStorage() ;") ;
        planTester.buildPlan("b = group a by $0 ;") ;
        LogicalPlan plan = planTester.buildPlan("c = foreach b generate group + 1.0 ;") ;


        // 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);
        LogicalPlan foreachPlan = foreach.getForEachPlans().get(0);

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        planTester.buildPlan("b = group a by *;") ;
        planTester.buildPlan("c = foreach b generate flatten(group);") ;
        LogicalPlan plan = planTester.buildPlan("d = foreach c generate $0 + 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);
        LogicalPlan foreachPlan = foreach.getForEachPlans().get(0);

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        planTester.buildPlan("b = group a by *;") ;
        planTester.buildPlan("c = foreach b generate flatten(group);") ;
        LogicalPlan plan = planTester.buildPlan("d = foreach c generate $0 + 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);
        LogicalPlan foreachPlan = foreach.getForEachPlans().get(0);

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        planTester.buildPlan("c = cogroup a by field1, b by field4 ;") ;
        planTester.buildPlan("d = foreach c generate group, flatten(a), flatten(b)  ;") ;
        LogicalPlan plan = planTester.buildPlan("e = foreach d generate group, field1 + 1, field4 + 2.0  ;") ;


        // 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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        planTester.buildPlan("c = cogroup a by field1, b by field4 ;") ;
        planTester.buildPlan("d = foreach c generate group, flatten(a), flatten(b)  ;") ;
        LogicalPlan plan = planTester.buildPlan("e = foreach d generate group, field1#'key' + 1, field4 + 2.0  ;") ;


        // 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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        planTester.buildPlan("c = cogroup a by *, b by * ;") ;
        planTester.buildPlan("d = foreach c generate group, flatten($1), flatten($2);") ;
        LogicalPlan plan = planTester.buildPlan("e = foreach d generate group, field1 + 1, field4 + 2.0;") ;


        // validate
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try {
            typeValidator.validate(plan, collector) ;
        }
        catch (PlanValidationException pve) {
            //not good
        }


        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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        planTester.buildPlan("c = cogroup a by *, b by * ;") ;
        planTester.buildPlan("d = foreach c generate group, flatten($1), flatten($2);") ;
        LogicalPlan plan = planTester.buildPlan("e = foreach d generate group + 1, field1 + 1, field4 + 2.0;") ;


        // validate
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try {
            typeValidator.validate(plan, collector) ;
            fail("Exception expected") ;
        }
        catch (PlanValidationException pve) {
            //not good
        }


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


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


    }

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        planTester.buildPlan("c = cogroup a by *, b by * ;") ;
        planTester.buildPlan("d = foreach c generate flatten(group), flatten($1), flatten($2);") ;
        LogicalPlan plan = planTester.buildPlan("e = foreach d generate $0 + 1, a::field1 + 1, field4 + 2.0;") ;


        // validate
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try {
            typeValidator.validate(plan, collector) ;
        }
        catch (PlanValidationException pve) {
            //not good
        }


        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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        planTester.buildPlan("d = foreach c generate group, a.(field1, field2), b.(field4);") ;
        planTester.buildPlan("e = foreach d generate group, flatten($1), flatten($2);") ;
        LogicalPlan plan = planTester.buildPlan("f = foreach e generate group, field1 + 1, field4 + 2.0;") ;


        // validate
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try {
            typeValidator.validate(plan, collector) ;
        }
        catch (PlanValidationException pve) {
            //not good
        }


        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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        planTester.buildPlan("d = foreach c generate * ;") ;
        planTester.buildPlan("f = foreach d generate group, flatten(a), flatten(b)  ;") ;
        LogicalPlan plan = planTester.buildPlan("g = foreach f generate group, field1 + 1, field4 + 2.0  ;") ;


        // validate
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try {
            typeValidator.validate(plan, collector) ;
        }
        catch (PlanValidationException pve) {
            //not good
        }


        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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