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.connect(constant3, gt1) ;
        plan.connect(gt1, and1) ;
        plan.connect(constant4, and1) ;
        plan.connect(and1, not1) ;
                      
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        
        typeValidator.validate(plan, collector) ;
        
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;
        
        if (collector.hasError()) {
            throw new Exception("Error not expected during type checking") ;
        }       




        // Induction check

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        plan.connect(constant1, mod1) ;
        plan.connect(constant2, mod1) ;
        plan.connect(mod1, equal1) ;
        plan.connect(constant3, equal1) ;
        
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;        
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;
        
        if (collector.hasError()) {
            throw new Exception("Error during type checking") ;
        }      
        
        // Induction check
        assertEquals(DataType.LONG, mod1.getType()) ;

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        plan.connect(constant3, cast1) ;
        plan.connect(div1, notequal1) ;
        plan.connect(cast1, notequal1) ;
        
                          
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;        
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;
        
        if (collector.hasError()) {
            throw new Exception("Error during type checking") ;
        }  
        
        // Induction check
        assertEquals(DataType.DOUBLE, div1.getType()) ;

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        plan.connect(constant3, cast1) ;
        plan.connect(div1, notequal1) ;
        plan.connect(cast1, notequal1) ;
        
                          
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try{
            typeValidator.validate(plan, collector) ;
            fail("Exception expected") ;
        }
        catch (PlanValidationException pve) {
            // good
        }
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;
        
        if (!collector.hasError()) {
            throw new Exception("Error during type checking") ;
        }  
    }

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        plan.connect(lesser1, bincond1) ;
        plan.connect(constant3, bincond1) ;
        plan.connect(constant4, bincond1) ;
        
         
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;        
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;
        
        if (collector.hasError()) {
            throw new Exception("Error during type checking") ;
        }  
        
        // Induction check
        assertEquals(DataType.BOOLEAN, lesser1.getType()) ;

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        plan.add(add1) ;
        
        plan.connect(constant1, add1) ;
        plan.connect(constant2, add1) ;        
                          
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try {
            typeValidator.validate(plan, collector) ;    
            fail("Exception expected") ;
        }
        catch (PlanValidationException pve) {
            // good
        }
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;
        
        if (!collector.hasError()) {
            throw new AssertionError("Error expected") ;
        }         
        
    }

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        plan.connect(constant1, gt1) ;
        plan.connect(constant2, gt1) ;
        plan.connect(gt1, equal1) ;
        plan.connect(constant3, equal1) ;
                      
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        try {
            typeValidator.validate(plan, collector) ;    
            fail("Exception expected") ;
        }
        catch (PlanValidationException pve) {
            // good
        }        
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;
        
        if (!collector.hasError()) {
            throw new AssertionError("Error expected") ;
        }   
    }

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        plan.connect(constant1, cast1) ;
        plan.connect(cast1, equal1) ;
        plan.connect(constant2, equal1) ;
                      
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;    
        printMessageCollector(collector) ;
        printTypeGraph(plan) ;
        
        if (collector.hasError()) {
            throw new Exception("Error during type checking") ;
        }   


        assertEquals(DataType.BOOLEAN, equal1.getType()) ;
        assertEquals(DataType.TUPLE, equal1.getRhsOperand().getType()) ;

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        plan.connect(constant1, cast1) ;
        plan.connect(cast1, equal1) ;
        plan.connect(constant2, equal1) ;
                      
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;


        try {
            typeValidator.validate(plan, collector) ; 
        } catch(PlanValidationException pve) {
          fail("Exception expected") ;
        }


        printMessageCollector(collector) ;
        printTypeGraph(plan) ;
        
        if (collector.hasError()) {
            throw new Exception("Error expected") ;
        }   
    }

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        // Before type checking its set correctly - PIG-421
        System.out.println(DataType.findTypeName(mul1.getType())) ;
        assertEquals(DataType.DOUBLE, mul1.getType()) ;    
        
        CompilationMessageCollector collector = new CompilationMessageCollector() ;
        TypeCheckingValidator typeValidator = new TypeCheckingValidator() ;
        typeValidator.validate(plan, collector) ;        
        printMessageCollector(collector) ;
        
        printTypeGraph(plan) ;

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