Package org.apache.pig.impl.logicalLayer

Examples of org.apache.pig.impl.logicalLayer.ExpressionOperator

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        if (leaves.size() > 1) {
            int errCode = 2060;
            String msg = "Expected one leaf. Found " + leaves.size() + " leaves.";
            throw new TypeCheckerException(msg, errCode, PigException.BUG);
        }
        ExpressionOperator currentOutput = (ExpressionOperator) leaves.get(0);
        collectCastWarning(frj, currentOutput.getType(), toType);
        OperatorKey newKey = genNewOperatorKey(currentOutput);
        LOCast cast = new LOCast(innerPlan, newKey, toType);
        innerPlan.add(cast);
        try {
            innerPlan.connect(currentOutput, cast);
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        if (leaves.size() > 1) {
            int errCode = 2060;
            String msg = "Expected one leaf. Found " + leaves.size() + " leaves.";
            throw new TypeCheckerException(msg, errCode, PigException.BUG);
        }
        ExpressionOperator currentOutput = (ExpressionOperator) leaves.get(0) ;
        collectCastWarning(cg, currentOutput.getType(), toType) ;
        OperatorKey newKey = genNewOperatorKey(currentOutput) ;
        LOCast cast = new LOCast(innerPlan, newKey, toType) ;
        innerPlan.add(cast) ;
        try {
            innerPlan.connect(currentOutput, cast) ;
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    }

    public void visit(LOAnd binOp) throws VisitorException {
        // if lhs or rhs is null constant then cast it to boolean
        insertCastsForNullToBoolean(binOp);
        ExpressionOperator lhs = binOp.getLhsOperand();
        ExpressionOperator rhs = binOp.getRhsOperand();

        byte lhsType = lhs.getType() ;
        byte rhsType = rhs.getType() ;

        if (  (lhsType != DataType.BOOLEAN)  ||
              (rhsType != DataType.BOOLEAN)  ) {
            int errCode = 1038;
            String msg = "Operands of AND/OR can be boolean only" ;
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    @Override
    public void visit(LOOr binOp) throws VisitorException {
        // if lhs or rhs is null constant then cast it to boolean
        insertCastsForNullToBoolean(binOp);
        ExpressionOperator lhs = binOp.getLhsOperand();
        ExpressionOperator rhs = binOp.getRhsOperand();

        byte lhsType = lhs.getType() ;
        byte rhsType = rhs.getType() ;

        if (  (lhsType != DataType.BOOLEAN)  ||
              (rhsType != DataType.BOOLEAN)  ) {
            int errCode = 1038;
            String msg = "Operands of AND/OR can be boolean only" ;
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    }

    @Override
    public void visit(LOMultiply binOp) throws VisitorException {
        ExpressionOperator lhs = binOp.getLhsOperand() ;
        ExpressionOperator rhs = binOp.getRhsOperand() ;

        byte lhsType = lhs.getType() ;
        byte rhsType = rhs.getType() ;

        if ( DataType.isNumberType(lhsType) &&
             DataType.isNumberType(rhsType) ) {

            // return the bigger type
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        exprOpsMap.put(con, ce);      
        translateConnection(con, ce);
    }
   
    public void visit(LOGreaterThan op) throws VisitorException {
        ExpressionOperator left = op.getLhsOperand();
        ExpressionOperator right = op.getRhsOperand();
               
        GreaterThanExpression eq = new GreaterThanExpression
        (exprPlan, exprOpsMap.get(left), exprOpsMap.get(right));
        exprOpsMap.put(op, eq);
    }
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        (exprPlan, exprOpsMap.get(left), exprOpsMap.get(right));
        exprOpsMap.put(op, eq);
    }

    public void visit(LOLesserThan op) throws VisitorException {
        ExpressionOperator left = op.getLhsOperand();
        ExpressionOperator right = op.getRhsOperand();
               
        LessThanExpression eq = new LessThanExpression
        (exprPlan, exprOpsMap.get(left), exprOpsMap.get(right));
        exprOpsMap.put(op, eq);
    }
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        (exprPlan, exprOpsMap.get(left), exprOpsMap.get(right));
        exprOpsMap.put(op, eq);
    }

    public void visit(LOGreaterThanEqual op) throws VisitorException {
        ExpressionOperator left = op.getLhsOperand();
        ExpressionOperator right = op.getRhsOperand();
               
        GreaterThanEqualExpression eq = new GreaterThanEqualExpression
        (exprPlan, exprOpsMap.get(left), exprOpsMap.get(right));
        exprOpsMap.put(op, eq);
    }
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        (exprPlan, exprOpsMap.get(left), exprOpsMap.get(right));
        exprOpsMap.put(op, eq);
    }

    public void visit(LOLesserThanEqual op) throws VisitorException {
        ExpressionOperator left = op.getLhsOperand();
        ExpressionOperator right = op.getRhsOperand();
               
        LessThanEqualExpression eq = new LessThanEqualExpression
        (exprPlan, exprOpsMap.get(left), exprOpsMap.get(right));
        exprOpsMap.put(op, eq);
    }
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        (exprPlan, exprOpsMap.get(left), exprOpsMap.get(right));
        exprOpsMap.put(op, eq);
    }

    public void visit(LOEqual op) throws VisitorException {    
        ExpressionOperator left = op.getLhsOperand();
        ExpressionOperator right = op.getRhsOperand();
               
        EqualExpression eq = new EqualExpression(exprPlan, exprOpsMap.get(left), exprOpsMap.get(right));
        exprOpsMap.put(op, eq);
    }
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Related Classes of org.apache.pig.impl.logicalLayer.ExpressionOperator

  • org.apache.pig.experimental.logical.LogicalPlanMigrationVistor$LogicalExpPlanMigrationVistor
  • org.apache.pig.impl.logicalLayer.optimizer.PruneColumns
  • org.apache.pig.impl.logicalLayer.validators.TypeCheckingVisitor
  • org.apache.pig.newplan.logical.LogicalExpPlanMigrationVistor
  • org.apache.pig.pen.AugmentBaseDataVisitor
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