Examples of org.apache.pig.newplan.logical.expression.CastExpression

Package org.apache.pig.newplan.logical.expression

Examples of org.apache.pig.newplan.logical.expression.CastExpression

org.apache.pig.newplan.logical.expression.CastExpression

        @Test
        public void testLineage1() throws Throwable {
            String query = "a = load 'a' as (field1: int, field2: float, field3: chararray );" 
                + "b = foreach a generate field1 + 1.0 ;";


            CastExpression cast = getCastFromLastForeach(query);


            assertTrue(cast.getFuncSpec() == null);
    
        }

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        }


        private CastExpression getCastFromExpPlan( LogicalExpressionPlan expPlan) {
            
            CastExpression castExpr = null;
            Iterator<Operator> opsIter = expPlan.getOperators();
            while(opsIter.hasNext()){
                Operator op = opsIter.next();
                if(op instanceof CastExpression){
                    if(castExpr != null){

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        @Test
        public void testLineage1NoSchema() throws Throwable {
            String query = "a = load 'a';" 
                + "b = foreach a generate $1 + 1.0 ;" ;
            CastExpression cast = getCastFromLastForeach(query);
            
            assertTrue(cast.getFuncSpec().getClassName().startsWith("org.apache.pig.builtin.PigStorage"));
    
        }

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        @Test
        public void testLineage2() throws Throwable {
            String query = "a = load 'a' as (field1, field2: float, field3: chararray );" 
                + "b = foreach a generate field1 + 1.0 ;" ;
            CastExpression cast = getCastFromLastForeach(query);
            
            assertTrue(cast.getFuncSpec().getClassName().startsWith("org.apache.pig.builtin.PigStorage"));
    
        }

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        private void checkLastForeachCastLoadFunc(String query,
                String loadFuncStr, int expressionNum)
        throws FrontendException {
            CastExpression cast = getCastFromLastForeach(query, expressionNum);
            checkCastLoadFunc(cast, loadFuncStr);            
        }

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            LogicalExpression exOp = (LogicalExpression) foreachPlan.getSinks().get(0);
    
            if(! (exOp instanceof ProjectExpression)) exOp = (LogicalExpression) foreachPlan.getSinks().get(1);


            CastExpression cast1 = (CastExpression)foreachPlan.getPredecessors(exOp).get(0);
            MapLookupExpression map = (MapLookupExpression)foreachPlan.getPredecessors(cast1).get(0);
            checkCastLoadFunc(cast1, "PigStorage('a')");
            
            CastExpression cast2 = (CastExpression)foreachPlan.getPredecessors(map).get(0);
            checkCastLoadFunc(cast1, "PigStorage('a')");
            
            foreachPlan =  ((LOGenerate)foreach.getInnerPlan().getSinks().get(0)).getOutputPlans().get(2);
            exOp = (LogicalExpression) foreachPlan.getSinks().get(0);
            if(! (exOp instanceof ProjectExpression)) exOp = (LogicalExpression) foreachPlan.getSinks().get(1);
            CastExpression cast = (CastExpression)foreachPlan.getPredecessors(exOp).get(0);
            checkCastLoadFunc(cast, "PigStorage('b')");
    
        }

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            LogicalExpression exOp = (LogicalExpression)filterPlan.getSinks().get(0);
    
            if(! (exOp instanceof ProjectExpression)) exOp = (LogicalExpression) filterPlan.getSinks().get(1);
    
            CastExpression cast = (CastExpression)filterPlan.getPredecessors(exOp).get(0);
            checkCastLoadFunc(cast, loadFuncStr);


        }

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        LogicalExpression exOp = (LogicalExpression)bPlan.getSinks().get(0);


        if(! (exOp instanceof ProjectExpression)) exOp = (LogicalExpression) bPlan.getSinks().get(1);


        CastExpression cast = (CastExpression)bPlan.getPredecessors(exOp).get(0);
        checkCastLoadFunc(cast, loadFuncStrA);
        


        LOSplitOutput splitOutputC = (LOSplitOutput)plan.getSinks().get(0);
        LogicalExpressionPlan cPlan = splitOutputC.getFilterPlan();

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                if(op instanceof LOFilter)
                    filter = (LOFilter)op;
            }


            LogicalExpressionPlan filterPlan = filter.getFilterPlan();
            CastExpression cast = getCastFromExpPlan(filterPlan);
            assertTrue(cast.getFuncSpec().getClassName().startsWith("org.apache.pig.builtin.PigStorage"));
    
        }

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        public void testCompareEqualityTupleCast() throws Throwable {
            //test if bytearray col gets casted to tuple
            String query = "a = load 'a' as (t : (i : int, j : int), col) ;"
            + "b = filter a by t == col;";
            
            CastExpression castExp = getCastFromLastFilter(query);
            assertNotNull("cast ", castExp);
            assertEquals("cast type", castExp.getType(), DataType.TUPLE);
        }

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org.apache.pig.FuncSpec

org.apache.pig.newplan.logical.LogicalExpPlanMigrationVistor

org.apache.pig.newplan.logical.rules.TypeCastInserter$TypeCastInserterTransformer

org.apache.pig.newplan.logical.visitor.TypeCheckingExpVisitor

org.apache.pig.newplan.logical.visitor.TypeCheckingRelVisitor

org.apache.pig.newplan.logical.visitor.UnionOnSchemaSetter

org.apache.pig.parser.SourceLocation

org.apache.pig.test.TestTypeCheckingValidatorNewLP

org.apache.pig.impl.logicalLayer.FrontendException

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