Package org.apache.pig.impl.plan

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

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    }

    @Override
    protected void visit(LOConst op) throws VisitorException {
        String scope = op.getOperatorKey().scope;
        ConstantExpression ce = new ConstantExpression(new OperatorKey(scope,
                nodeGen.getNextNodeId(scope)));
        ce.setAlias(op.getAlias());
        ce.setValue(op.getValue());
        ce.setResultType(op.getType());
        //this operator doesn't have any predecessors
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    }

    @Override
    public void visit(LOBinCond op) throws VisitorException {
        String scope = op.getOperatorKey().scope;
        ExpressionOperator physOp = new POBinCond(new OperatorKey(scope,
                nodeGen.getNextNodeId(scope)), op.getRequestedParallelism());
        physOp.setAlias(op.getAlias());
        logToPhyMap.put(op, physOp);
        POBinCond phy = (POBinCond) physOp;
        ExpressionOperator cond = (ExpressionOperator)logToPhyMap.get(op.getCond());
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    }

    @Override
    protected void visit(LONegative op) throws VisitorException {
        String scope = op.getOperatorKey().scope;
        ExpressionOperator physOp = new PONegative(new OperatorKey(scope,
                nodeGen.getNextNodeId(scope)), op.getRequestedParallelism(),
                null);
        physOp.setAlias(op.getAlias());
        currentPlan.add(physOp);
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    }

    @Override
    protected void visit(LOIsNull op) throws VisitorException {
        String scope = op.getOperatorKey().scope;
        UnaryComparisonOperator physOp = new POIsNull(new OperatorKey(scope, nodeGen
                .getNextNodeId(scope)), op.getRequestedParallelism(), null);
        physOp.setAlias(op.getAlias());
        List<LogicalOperator> inputs = op.getPlan().getPredecessors(op);
        ExpressionOperator from;
       
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    }

    @Override
    protected void visit(LOMapLookup op) throws VisitorException {
        String scope = (op.getOperatorKey()).scope;
        ExpressionOperator physOp = new POMapLookUp(new OperatorKey(scope,
                nodeGen.getNextNodeId(scope)), op.getRequestedParallelism(), op
                .getLookUpKey());
        physOp.setResultType(op.getType());
        physOp.setAlias(op.getAlias());
        currentPlan.add(physOp);
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    }

    @Override
    protected void visit(LOCast op) throws VisitorException {
        String scope = op.getOperatorKey().scope;
        POCast physOp = new POCast(new OperatorKey(scope, nodeGen
                .getNextNodeId(scope)), op.getRequestedParallelism());
        physOp.setAlias(op.getAlias());
        currentPlan.add(physOp);

        logToPhyMap.put(op, physOp);
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    }

    @Override
    protected void visit(LOLimit limit) throws VisitorException {
            String scope = limit.getOperatorKey().scope;
            POLimit poLimit = new POLimit(new OperatorKey(scope, nodeGen.getNextNodeId(scope)), limit.getRequestedParallelism());
            poLimit.setResultType(limit.getType());
            poLimit.setLimit(limit.getLimit());
            poLimit.setAlias(limit.getAlias());
            currentPlan.add(poLimit);
            logToPhyMap.put(limit, poLimit);
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    }

    @Override
    protected void visit(LOUnion op) throws VisitorException {
        String scope = op.getOperatorKey().scope;
        POUnion physOp = new POUnion(new OperatorKey(scope, nodeGen
                .getNextNodeId(scope)), op.getRequestedParallelism());
        physOp.setAlias(op.getAlias());
        currentPlan.add(physOp);
        physOp.setResultType(op.getType());
        logToPhyMap.put(op, physOp);
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    @Override
    public void visit( AndExpression op ) throws FrontendException {
       
//        System.err.println("Entering And");
        BinaryComparisonOperator exprOp = new POAnd(new OperatorKey(DEFAULT_SCOPE, nodeGen.getNextNodeId(DEFAULT_SCOPE)));
       
        attachBinaryComparisonOperator(op, exprOp);
    }
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    @Override
    public void visit( OrExpression op ) throws FrontendException {
       
//        System.err.println("Entering Or");
        BinaryComparisonOperator exprOp = new POOr(new OperatorKey(DEFAULT_SCOPE, nodeGen.getNextNodeId(DEFAULT_SCOPE)));
       
        attachBinaryComparisonOperator(op, exprOp);
    }
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